Xerox Corp
Xerox CorpActive Patents
1
Total Holdings
416
Patent Holdings
Filter in Explorer →| Patent No. | Title | Status | Filing Date | Grant Date | Claims | Actions |
|---|---|---|---|---|---|---|
| EP1191784A1 | Method of processing document image data | Expired / Lapsed | 2000-11-29 | — | 4 | Details |
| EP0720916A2 | Ink supply identification system for a printer | Expired / Lapsed | 1996-01-03 | — | 13 | Details |
| EP0404494A1 | Thermal ink jet compositions | Expired / Lapsed | 1990-06-19 | — | 16 | Details |
| EP0300743A2 | Improved spot deposition for liquid ink printing | Expired / Lapsed | 1988-07-20 | — | 11 | Details |
| GB2024084A | Large capacity stapler magazine | Expired / Lapsed | 1979-06-26 | — | 12 | Details |
| DE2231949A1 | TORQUE TOOL | Expired / Lapsed | 1972-06-29 | — | 0 | Details |
| BE763540A | LAYERED IMAGE TRAINING MEMBER AND MANUFACTURING METHOD. | Expired / Lapsed | 1971-02-26 | — | 0 | Details |
| GB1320524A | Continuous tone facsimile transmission | Expired / Lapsed | 1970-08-12 | — | 0 | Details |
| US7837290B2 | Continuous web printing system alignment method | Active / In Force | 2008-07-18 | 2010-11-23 | 23 | Details |
| US6772335B2 | Multimedia coordination system | Expired / Lapsed | 2001-12-06 | 2004-08-03 | 35 | Details |
| US6580812B1 | Methods and systems for automatically adding motion lines r… | Expired / Lapsed | 1998-12-21 | 2003-06-17 | 36 | Details |
| US6560707B2 | Multimedia coordination system | Expired / Lapsed | 1996-01-16 | 2003-05-06 | 25 | Details |
| US6101285A | Filter for producing continuous tone images from halftone d… | Expired / Lapsed | 1998-03-23 | 2000-08-08 | 16 | Details |
| US5976231A | Inks for ink jet printing | Expired / Lapsed | 1998-06-29 | 1999-11-02 | 30 | Details |
| US5969003A | Ink compositions | Expired / Lapsed | 1998-02-02 | 1999-10-19 | 36 | Details |
| US5917822A | Method for providing integrated packet services over a shar… | Expired / Lapsed | 1996-04-12 | 1999-06-29 | 25 | Details |
| US5855656A | Ink compositions for thermal ink jet printing | Expired / Lapsed | 1997-10-30 | 1999-01-05 | 42 | Details |
| US5833744A | Waterfast ink jet inks containing a surfactant | Expired / Lapsed | 1997-01-13 | 1998-11-10 | 26 | Details |
| US5795325A | Methods and apparatus for anchoring an occluding member | Expired / Lapsed | 1995-12-11 | 1998-08-18 | 24 | Details |
| US5784115A | System and method for motion compensated de-interlacing of … | Expired / Lapsed | 1996-12-31 | 1998-07-21 | 23 | Details |
| US5772744A | Ink compositions for thermal ink printing | Expired / Lapsed | 1997-10-30 | 1998-06-30 | 18 | Details |
| US5734752A | Digital watermarking using stochastic screen patterns | Expired / Lapsed | 1996-09-24 | 1998-03-31 | 23 | Details |
| US5658704A | Toner processes | Expired / Lapsed | 1996-06-17 | 1997-08-19 | 18 | Details |
| US5604076A | Toner compositions and processes thereof | Expired / Lapsed | 1996-02-01 | 1997-02-18 | 21 | Details |
| US5545504A | Ink jettable toner compositions and processes for making an… | Expired / Lapsed | 1994-10-03 | 1996-08-13 | 24 | Details |
| US5502543A | System for collecting statistical data on remotely monitore… | Expired / Lapsed | 1994-06-28 | 1996-03-26 | 23 | Details |
| US5485212A | Software video compression for teleconferencing | Expired / Lapsed | 1993-11-02 | 1996-01-16 | 16 | Details |
| US5440329A | Systems and methods for thermal transfer printing | Expired / Lapsed | 1992-12-22 | 1995-08-08 | 35 | Details |
| US5405728A | Toner aggregation processes | Expired / Lapsed | 1993-06-25 | 1995-04-11 | 33 | Details |
| US5371531A | Thermal ink-jet printing with fast- and slow-drying inks | Expired / Lapsed | 1992-11-12 | 1994-12-06 | 18 | Details |
| US5363213A | Unquantized resolution conversion of bitmap images using er… | Expired / Lapsed | 1992-06-08 | 1994-11-08 | 23 | Details |
| US5357536A | Method and apparatus for the positioning of laser diodes | Expired / Lapsed | 1993-05-07 | 1994-10-18 | 29 | Details |
| US5346797A | Toner processes | Expired / Lapsed | 1993-02-25 | 1994-09-13 | 31 | Details |
| US5321834A | Method and system for reclaiming unreferenced computer memo… | Expired / Lapsed | 1993-10-21 | 1994-06-14 | 6 | Details |
| US5307175A | Optical image defocus correction | Expired / Lapsed | 1992-03-27 | 1994-04-26 | 20 | Details |
| US5254159A | Ink compositions | Expired / Lapsed | 1992-12-17 | 1993-10-19 | 41 | Details |
| US5243443A | Halftoning with error feedback and image dependent enhancem… | Expired / Lapsed | 1991-12-06 | 1993-09-07 | 18 | Details |
| US5208701A | Wobble correction lens with binary diffractive optic surfac… | Expired / Lapsed | 1991-12-24 | 1993-05-04 | 29 | Details |
| US5167987A | Process for fabricating electrostatographic imaging members | Expired / Lapsed | 1991-11-04 | 1992-12-01 | 20 | Details |
| US5129948A | Ink for ink jet printing | Expired / Lapsed | 1991-05-16 | 1992-07-14 | 30 | Details |
| US5129014A | Image registration | Expired / Lapsed | 1989-12-08 | 1992-07-07 | 12 | Details |
| US5119079A | Touch screen user interface with expanding touch locations … | Expired / Lapsed | 1990-09-17 | 1992-06-02 | 8 | Details |
| US5098475A | Inks with dendrimer colorants | Expired / Lapsed | 1991-01-28 | 1992-03-24 | 20 | Details |
| US5045880A | Pre-programming during job run | Expired / Lapsed | 1988-10-03 | 1991-09-03 | 18 | Details |
| US5019166A | Thermal ink jet compositions | Expired / Lapsed | 1989-06-22 | 1991-05-28 | 60 | Details |
| US5017644A | Ink jet ink compositions | Expired / Lapsed | 1989-05-22 | 1991-05-21 | 56 | Details |
| US4947397A | Job scheduler diagnostics | Expired / Lapsed | 1988-11-02 | 1990-08-07 | 12 | Details |
| US4889560A | Phase change ink composition and phase change ink produced … | Expired / Lapsed | 1988-08-03 | 1989-12-26 | 37 | Details |
| US4878992A | Method of fabricating thermal ink jet printheads | Expired / Lapsed | 1988-11-25 | 1989-11-07 | 9 | Details |
| US4877451A | Ink jet inks containing colored silica particles | Expired / Lapsed | 1988-08-17 | 1989-10-31 | 51 | Details |
| US4870644A | Control crash diagnostic strategy and RAM display | Expired / Lapsed | 1982-09-21 | 1989-09-26 | 9 | Details |
| US4833491A | Thermal ink jet printer adapted to operate in monochrome, h… | Expired / Lapsed | 1988-06-15 | 1989-05-23 | 10 | Details |
| US4774529A | Repositionable marking head for increasing printing speed | Expired / Lapsed | 1987-02-26 | 1988-09-27 | 5 | Details |
| US4764841A | Toner charging apparatus with coated toner transport members | Expired / Lapsed | 1984-12-14 | 1988-08-16 | 18 | Details |
| US4762997A | Fluid jet assisted ion projection charging method | Expired / Lapsed | 1983-11-30 | 1988-08-09 | 20 | Details |
| US4748453A | Spot deposition for liquid ink printing | Expired / Lapsed | 1987-07-21 | 1988-05-31 | 9 | Details |
| US4743937A | Apparatus for charging toner particles | Expired / Lapsed | 1983-12-12 | 1988-05-10 | 84 | Details |
| US4739366A | Real time diagnostic system for reprographic machines | Expired / Lapsed | 1986-09-02 | 1988-04-19 | 14 | Details |
| US4698196A | Method and apparatus for extruding creaseless thin walled t… | Expired / Lapsed | 1985-12-24 | 1987-10-06 | 15 | Details |
| US4690391A | Method and apparatus for fabricating full width scanning ar… | Expired / Lapsed | 1983-01-31 | 1987-09-01 | 4 | Details |
| US4638397A | Self-biased scorotron and control therefor | Expired / Lapsed | 1984-12-21 | 1987-01-20 | 12 | Details |
| US4634648A | Electrophotographic imaging members with amorphous carbon | Expired / Lapsed | 1985-07-05 | 1987-01-06 | 63 | Details |
| US4588667A | Electrophotographic imaging member and process comprising s… | Expired / Lapsed | 1984-05-15 | 1986-05-13 | 19 | Details |
| US4580148A | Thermal ink jet printer with droplet ejection by bubble col… | Expired / Lapsed | 1985-02-19 | 1986-04-01 | 7 | Details |
| US4558413A | Software version management system | Expired / Lapsed | 1983-11-21 | 1985-12-10 | 8 | Details |
| US4555785A | Optical repeater integrated lasers | Expired / Lapsed | 1984-03-15 | 1985-11-26 | 5 | Details |
| US4550333A | Light emitting semiconductor mount | Expired / Lapsed | 1983-09-13 | 1985-10-29 | 12 | Details |
| US4521772A | Cursor control device | Expired / Lapsed | 1983-01-13 | 1985-06-04 | 68 | Details |
| US4520368A | Ink jet printing method and apparatus | Expired / Lapsed | 1983-08-10 | 1985-05-28 | 10 | Details |
| US4513022A | Process for amorphous silicon films | Expired / Lapsed | 1984-05-25 | 1985-04-23 | 5 | Details |
| US4477901A | Directive diagnostics | Expired / Lapsed | 1981-11-23 | 1984-10-16 | 18 | Details |
| US4474866A | Developer composition containing superparamagnetic polymers | Expired / Lapsed | 1983-09-28 | 1984-10-02 | 15 | Details |
| US4475156A | Virtual machine control | Expired / Lapsed | 1982-09-21 | 1984-10-02 | 21 | Details |
| US4464450A | Multi-layer photoreceptor containing siloxane on a metal ox… | Expired / Lapsed | 1982-09-21 | 1984-08-07 | 24 | Details |
| US4442544A | Adaptive thresholder | Expired / Lapsed | 1981-07-09 | 1984-04-10 | 7 | Details |
| US4439507A | Layered photoresponsive imaging device with photogenerating… | Expired / Lapsed | 1982-09-21 | 1984-03-27 | 27 | Details |
| US4428065A | Data processing system with multiple display apparatus | Expired / Lapsed | 1982-03-19 | 1984-01-24 | 8 | Details |
| US4388145A | Laser annealing for growth of single crystal semiconductor … | Expired / Lapsed | 1981-10-29 | 1983-06-14 | 12 | Details |
| US4376688A | Method for producing semiconductor films | Expired / Lapsed | 1981-04-03 | 1983-03-15 | 17 | Details |
| US4376933A | Circuit for compacting data | Expired / Lapsed | 1980-05-23 | 1983-03-15 | 15 | Details |
| US4372515A | CRT Housing support and rocking tilt apparatus | Expired / Lapsed | 1980-09-08 | 1983-02-08 | 5 | Details |
| US4365889A | Document handling unit | Expired / Lapsed | 1980-11-10 | 1982-12-28 | 14 | Details |
| US4355273A | Servo capture system | Expired / Lapsed | 1980-09-15 | 1982-10-19 | 5 | Details |
| US4349770A | Electronic damping apparatus | Expired / Lapsed | 1980-07-22 | 1982-09-14 | 15 | Details |
| US4336994A | Multi-mode color copier | Expired / Lapsed | 1980-11-24 | 1982-06-29 | 17 | Details |
| US4332464A | Interactive user-machine interface method and apparatus for… | Expired / Lapsed | 1980-09-22 | 1982-06-01 | 10 | Details |
| US4328426A | Filter for image pixels | Expired / Lapsed | 1980-08-04 | 1982-05-04 | 7 | Details |
| US4327993A | Method and apparatus for performing job recovery in a repro… | Expired / Lapsed | 1979-10-30 | 1982-05-04 | 6 | Details |
| US4321441A | Keyswitch arrangement | Expired / Lapsed | 1980-02-04 | 1982-03-23 | 10 | Details |
| US4305653A | Scanning diagnostics | Expired / Lapsed | 1979-10-02 | 1981-12-15 | 13 | Details |
| US4306008A | Imaging system with a diamine charge transport material in … | Expired / Lapsed | 1978-12-04 | 1981-12-15 | 7 | Details |
| US4303947A | Image interpolation system | Expired / Lapsed | 1980-04-28 | 1981-12-01 | 23 | Details |
| US4299897A | Aromatic amino charge transport layer in electrophotography | Expired / Lapsed | 1980-02-15 | 1981-11-10 | 9 | Details |
| US4291110A | Siloxane hole trapping layer for overcoated photoreceptors | Expired / Lapsed | 1979-06-11 | 1981-09-22 | 9 | Details |
| US4290122A | Self-synchronizing clock source for optical memories | Expired / Lapsed | 1979-05-14 | 1981-09-15 | 8 | Details |
| US4288821A | Multi-resolution image signal processing apparatus and meth… | Expired / Lapsed | 1980-06-02 | 1981-09-08 | 36 | Details |
| US4287536A | Gain control for scanning arrays | Expired / Lapsed | 1979-10-12 | 1981-09-01 | 11 | Details |
| US4280125A | Thin vacuum panel display device | Expired / Lapsed | 1979-07-27 | 1981-07-21 | 11 | Details |
| US4268022A | Conforming document aligner | Expired / Lapsed | 1979-08-30 | 1981-05-19 | 9 | Details |
| US4265990A | Imaging system with a diamine charge transport material in … | Expired / Lapsed | 1978-12-04 | 1981-05-05 | 7 | Details |
| US4259694A | Electronic rescreen technique for halftone pictures | Expired / Lapsed | 1979-08-24 | 1981-03-31 | 11 | Details |
| US4255754A | Differential fiber optic sensing method and apparatus for i… | Expired / Lapsed | 1979-03-19 | 1981-03-10 | 32 | Details |
| US4255040A | Positive overlay electronic xerographic printer | Expired / Lapsed | 1978-07-20 | 1981-03-10 | 15 | Details |
| US4254467A | Vector to raster processor | Expired / Lapsed | 1979-06-04 | 1981-03-03 | 13 | Details |
| US4252671A | Preparation of colloidal iron dispersions by the polymer-ca… | Expired / Lapsed | 1979-12-04 | 1981-02-24 | 42 | Details |
| US4248528A | Copier with document sensing control | Expired / Lapsed | 1979-04-04 | 1981-02-03 | 13 | Details |
| US4245258A | Method and apparatus for reduction of false contours in ele… | Expired / Lapsed | 1979-11-05 | 1981-01-13 | 18 | Details |
| US4234250A | Electrophotographic printing system | Expired / Lapsed | 1977-07-15 | 1980-11-18 | 9 | Details |
| US4233384A | Imaging system using novel charge transport layer | Expired / Lapsed | 1979-04-30 | 1980-11-11 | 7 | Details |
| US4214280A | Method and apparatus for recording data without recording o… | Expired / Lapsed | 1978-05-30 | 1980-07-22 | 17 | Details |
| US4209262A | Print wheel loading apparatus | Expired / Lapsed | 1978-11-15 | 1980-06-24 | 4 | Details |
| US4203154A | Electronic image processing system | Expired / Lapsed | 1978-04-24 | 1980-05-13 | 10 | Details |
| US4196453A | Image screening system | Expired / Lapsed | 1978-12-01 | 1980-04-01 | 15 | Details |
| US4196452A | Tone error control for image contour removal | Expired / Lapsed | 1978-12-01 | 1980-04-01 | 9 | Details |
| US4196476A | Reproduction machine with selectively disclosable programs | Expired / Lapsed | 1977-08-30 | 1980-04-01 | 18 | Details |
| US4194221A | Automatic multimode continuous halftone line copy reproduct… | Expired / Lapsed | 1978-12-26 | 1980-03-18 | 24 | Details |
| US4193092A | Image interpolation system | Expired / Lapsed | 1978-06-21 | 1980-03-11 | 15 | Details |
| US4193096A | Half tone encoder/decoder | Expired / Lapsed | 1977-04-04 | 1980-03-11 | 13 | Details |
| US4187194A | Encapsulation process | Expired / Lapsed | 1974-02-07 | 1980-02-05 | 19 | Details |
| US4186299A | Reproduction machine with different operating programs | Expired / Lapsed | 1977-08-30 | 1980-01-29 | 3 | Details |
| US4183094A | Optical storage medium using the frequency domain | Expired / Lapsed | 1978-03-20 | 1980-01-08 | 14 | Details |
| USRE30118E | Disc drive linear actuator and control system therefor | Expired / Lapsed | 1977-11-21 | 1979-10-16 | 32 | Details |
| US4170791A | Serial data communication system for a reproduction machine | Expired / Lapsed | 1977-08-30 | 1979-10-09 | 19 | Details |
| US4168513A | Regenerative decoding of binary data using minimum redundan… | Expired / Lapsed | 1977-09-12 | 1979-09-18 | 18 | Details |
| US4158886A | Operator console for a reproduction machine | Expired / Lapsed | 1977-08-30 | 1979-06-19 | 7 | Details |
| US4151944A | Staplers | Expired / Lapsed | 1977-09-28 | 1979-05-01 | 7 | Details |
| US4149090A | Crossover arrangement for multiple scanning arrays | Expired / Lapsed | 1977-05-02 | 1979-04-10 | 8 | Details |
| US4149091A | Scanning apparatus | Expired / Lapsed | 1977-05-02 | 1979-04-10 | 13 | Details |
| US4147540A | Color electrophotographic developer system employing one ca… | Expired / Lapsed | 1977-08-01 | 1979-04-03 | 10 | Details |
| US4144550A | Reproduction machine using fiber optics communication system | Expired / Lapsed | 1977-08-30 | 1979-03-13 | 6 | Details |
| US4144561A | Chip topography for MOS integrated circuitry microprocessor… | Expired / Lapsed | 1977-07-08 | 1979-03-13 | 10 | Details |
| US4144547A | Apparatus and method for encoding halftone and line copy da… | Expired / Lapsed | 1977-04-04 | 1979-03-13 | 20 | Details |
| US4140962A | High voltage regulator using light dependent resistor | Expired / Lapsed | 1977-06-09 | 1979-02-20 | 14 | Details |
| US4137565A | Direct memory access module for a controller | Expired / Lapsed | 1977-01-10 | 1979-01-30 | 32 | Details |
| US4135927A | Multicolor xerographic process | Expired / Lapsed | 1975-05-15 | 1979-01-23 | 7 | Details |
| US4133477A | Fault detection and system for electrostatographic machines | Expired / Lapsed | 1976-04-15 | 1979-01-09 | 12 | Details |
| US4131944A | System bus module for a controller | Expired / Lapsed | 1977-01-12 | 1978-12-26 | 38 | Details |
| US4128299A | Waveguide optical modulator | Expired / Lapsed | 1977-05-12 | 1978-12-05 | 18 | Details |
| US4126893A | Interrupt request controller for data processing system | Expired / Lapsed | 1977-02-17 | 1978-11-21 | 9 | Details |
| US4126722A | Fusing surface | Expired / Lapsed | 1976-10-18 | 1978-11-21 | 18 | Details |
| US4116558A | Duplex system and method for pre-collation copiers | Expired / Lapsed | 1977-02-09 | 1978-09-26 | 41 | Details |
| US4115116A | Imaging member having a polycarbonate-biphenyl diamine char… | Expired / Lapsed | 1977-05-04 | 1978-09-19 | 7 | Details |
| US4113993A | Automatic dialer having a recall memory | Expired / Lapsed | 1977-05-03 | 1978-09-12 | 6 | Details |
| US4111151A | Multi-particle developability regulating system | Expired / Lapsed | 1977-05-19 | 1978-09-05 | 22 | Details |
| US4110024A | Transfer assembly for electrostatic transfer of a toner ima… | Expired / Lapsed | 1976-05-14 | 1978-08-29 | 9 | Details |
| US4103331A | Data processing display system | Expired / Lapsed | 1977-05-25 | 1978-07-25 | 9 | Details |
| US4103252A | Capacitive touch-activated transducer system including a pl… | Expired / Lapsed | 1976-11-26 | 1978-07-25 | 23 | Details |
| US4101788A | Mos buffer circuit | Expired / Lapsed | 1977-03-18 | 1978-07-18 | 21 | Details |
| US4100604A | Frequency domain automatic equalizer utilizing the discrete… | Expired / Lapsed | 1976-07-19 | 1978-07-11 | 37 | Details |
| US4099112A | Method and means for seeking magnetic tracks | Expired / Lapsed | 1976-10-26 | 1978-07-04 | 9 | Details |
| US4096527A | Run length encoding and decoding methods and means | Expired / Lapsed | 1976-09-27 | 1978-06-20 | 10 | Details |
| US4096526A | Run length encoding and decoding methods and means | Expired / Lapsed | 1976-09-27 | 1978-06-20 | 10 | Details |
| US4096520A | Run length encoding and decoding methods and means | Expired / Lapsed | 1976-09-27 | 1978-06-20 | 10 | Details |
| US4092676A | Block length multiple plus run length residue codes for run… | Expired / Lapsed | 1976-12-29 | 1978-05-30 | 14 | Details |
| US4091913A | Printing apparatus with printing material non-motion detect… | Expired / Lapsed | 1976-12-06 | 1978-05-30 | 16 | Details |
| US4083633A | Blade cleaning holder | Expired / Lapsed | 1976-06-28 | 1978-04-11 | 4 | Details |
| US4080652A | Data processing system | Expired / Lapsed | 1977-02-17 | 1978-03-21 | 7 | Details |
| US4080651A | Memory control processor | Expired / Lapsed | 1977-02-17 | 1978-03-21 | 12 | Details |
| US4079458A | High resolution character generator | Expired / Lapsed | 1976-08-11 | 1978-03-14 | 19 | Details |
| US4068266A | Statistical resolution conversion technique | Expired / Lapsed | 1976-06-03 | 1978-01-10 | 27 | Details |
| US4066335A | Variable density lens | Expired / Lapsed | 1976-01-19 | 1978-01-03 | 4 | Details |
| US4066563A | Copper-tetra-4-(octadecylsulfonomido) phthalocyanine electr… | Expired / Lapsed | 1975-09-29 | 1978-01-03 | 6 | Details |
| US4065731A | Tandem laser assembly | Expired / Lapsed | 1976-04-27 | 1977-12-27 | 14 | Details |
| US4063220A | Multipoint data communication system with collision detecti… | Expired / Lapsed | 1975-03-31 | 1977-12-13 | 26 | Details |
| US4062061A | Error log for electrostatographic machines | Expired / Lapsed | 1976-04-15 | 1977-12-06 | 5 | Details |
| US4060316A | Imaging method | Expired / Lapsed | 1976-03-22 | 1977-11-29 | 17 | Details |
| US4058850A | Programmable controller | Expired / Lapsed | 1974-08-12 | 1977-11-15 | 10 | Details |
| US4054380A | Control system for high speed copier/duplicators | Expired / Lapsed | 1974-02-22 | 1977-10-18 | 40 | Details |
| US4052207A | Electrostatographic imaging process | Expired / Lapsed | 1976-12-01 | 1977-10-04 | 22 | Details |
| US4051536A | Electronic halftone imaging system | Expired / Lapsed | 1975-03-14 | 1977-09-27 | 14 | Details |
| US4050058A | Microprocessor with parallel operation | Expired / Lapsed | 1975-10-24 | 1977-09-20 | 12 | Details |
| US4047949A | Composite layered imaging member for electrophotography | Expired / Lapsed | 1976-11-01 | 1977-09-13 | 34 | Details |
| US4045219A | Method of reproducing color highlighted documents | Expired / Lapsed | 1976-01-07 | 1977-08-30 | 6 | Details |
| US4045218A | Method for electrostatically producing a color accented pho… | Expired / Lapsed | 1975-06-30 | 1977-08-30 | 5 | Details |
| US4043293A | Developability regulating apparatus | Expired / Lapsed | 1976-05-03 | 1977-08-23 | 18 | Details |
| US4039331A | Carrier bead coating compositions | Expired / Lapsed | 1976-03-24 | 1977-08-02 | 15 | Details |
| US4037216A | Position retry apparatus for serial printer | Expired / Lapsed | 1976-05-03 | 1977-07-19 | 18 | Details |
| US4032977A | Gray scale interpolation technique | Expired / Lapsed | 1976-06-03 | 1977-06-28 | 30 | Details |
| US4032929A | High density linear array ink jet assembly | Expired / Lapsed | 1975-10-28 | 1977-06-28 | 24 | Details |
| US4027215A | Rotary machine | Expired / Lapsed | 1975-03-24 | 1977-05-31 | 49 | Details |
| US4021650A | Velocity command signal generating apparatus | Expired / Lapsed | 1975-11-19 | 1977-05-03 | 31 | Details |
| US4016099A | Method of forming encapsulated toner particles | Expired / Lapsed | 1972-03-27 | 1977-04-05 | 18 | Details |
| US4014607A | Removable screening system for a transparency reproduction … | Expired / Lapsed | 1976-03-03 | 1977-03-29 | 12 | Details |
| US4012255A | Overcoated electrostatographic photoreceptor | Expired / Lapsed | 1976-05-06 | 1977-03-15 | 10 | Details |
| US4006019A | Method for the preparation of an electrostatographic photor… | Expired / Lapsed | 1975-07-03 | 1977-02-01 | 24 | Details |
| US4001500A | Amplifier for use in a document scanning system | Expired / Lapsed | 1974-11-21 | 1977-01-04 | 10 | Details |
| US4000460A | Digital circuit module test system | Expired / Lapsed | 1974-07-01 | 1976-12-28 | 10 | Details |
| US3987685A | Cursor position device | Expired / Lapsed | 1974-12-16 | 1976-10-26 | 8 | Details |
| US3985663A | Conductive inks containing quaternary ammonium compounds | Expired / Lapsed | 1974-03-14 | 1976-10-12 | 20 | Details |
| US3980476A | Imaging system | Expired / Lapsed | 1975-01-27 | 1976-09-14 | 8 | Details |
| US3973845A | Method of reducing friction in blade cleaning of imaging su… | Expired / Lapsed | 1975-01-15 | 1976-08-10 | 6 | Details |
| US3973825A | Flat field scanning system | Expired / Lapsed | 1974-12-30 | 1976-08-10 | 21 | Details |
| US3973957A | Imaging method including exposure of deformation imaging me… | Expired / Lapsed | 1973-12-28 | 1976-08-10 | 13 | Details |
| US3971950A | Independent compression and positioning device for use in m… | Expired / Lapsed | 1975-04-14 | 1976-07-27 | 18 | Details |
| US3969618A | On line PROM handling system | Expired / Lapsed | 1974-11-29 | 1976-07-13 | 28 | Details |
| US3967818A | Duplicating system | Expired / Lapsed | 1974-12-16 | 1976-07-06 | 7 | Details |
| US3957348A | Method for altering elliptically polarized light | Expired / Lapsed | 1975-03-26 | 1976-05-18 | 12 | Details |
| US3954259A | Double bar separator for a sheet receiving tray | Expired / Lapsed | 1974-11-25 | 1976-05-04 | 4 | Details |
| US3953207A | Composite layered photoreceptor | Expired / Lapsed | 1974-10-25 | 1976-04-27 | 11 | Details |
| US3947270A | Reproducing apparatus and process for duplex imaging in a s… | Expired / Lapsed | 1973-11-01 | 1976-03-30 | 19 | Details |
| US3944323A | Variable spot size scanning system | Expired / Lapsed | 1974-12-23 | 1976-03-16 | 6 | Details |
| US3940518A | Bake technique for manufacturing tetrafluoroethylene coated… | Expired / Lapsed | 1974-04-26 | 1976-02-24 | 11 | Details |
| US3938098A | Input/output connection arrangement for microprogrammable c… | Expired / Lapsed | 1973-12-26 | 1976-02-10 | 12 | Details |
| US3934549A | Transfer apparatus | Expired / Lapsed | 1974-08-01 | 1976-01-27 | 10 | Details |
| US3928034A | Electron transport layer over an inorganic photoconductive … | Expired / Lapsed | 1973-03-16 | 1975-12-23 | 12 | Details |
| US3926762A | Rf sputtering of trigonal selenium films | Expired / Lapsed | 1974-09-24 | 1975-12-16 | 7 | Details |
| US3926518A | Optical scanning system | Expired / Lapsed | 1974-05-21 | 1975-12-16 | 2 | Details |
| US3923762A | Process for preparation of 2-anthryl and substituted 2-anth… | Expired / Lapsed | 1974-02-25 | 1975-12-02 | 12 | Details |
| US3920896A | Communications systems having a selective facsimile output | Expired / Lapsed | 1974-03-29 | 1975-11-18 | 73 | Details |
| US3919476A | Time dependent two-to-three level alternate encoding | Expired / Lapsed | 1974-05-30 | 1975-11-11 | 24 | Details |
| US3914040A | Reversible screen for electrophotographic printing | Expired / Lapsed | 1974-06-03 | 1975-10-21 | 22 | Details |
| US3914043A | Color accenting copying machine | Expired / Lapsed | 1974-03-29 | 1975-10-21 | 7 | Details |
| US3911420A | Display system including a high resolution character genera… | Expired / Lapsed | 1973-11-23 | 1975-10-07 | 27 | Details |
| US3909259A | Color electrophotographic imaging process utilizing specifi… | Expired / Lapsed | 1973-12-17 | 1975-09-30 | 9 | Details |
| US3907694A | Non-volatile conductive inks | Expired / Lapsed | 1973-05-25 | 1975-09-23 | 11 | Details |
| US3900587A | Imaging process employing treated carrier particles | Expired / Lapsed | 1974-01-07 | 1975-08-19 | 7 | Details |
| US3900002A | Donor apparatus | Expired / Lapsed | 1973-08-30 | 1975-08-19 | 5 | Details |
| US3900001A | Developing apparatus | Expired / Lapsed | 1973-03-27 | 1975-08-19 | 17 | Details |
| US3898583A | Laser stabilization technique | Expired / Lapsed | 1973-12-28 | 1975-08-05 | 9 | Details |
| US3898377A | Video mixer | Expired / Lapsed | 1973-11-23 | 1975-08-05 | 20 | Details |
| US3884686A | Color correction method | Expired / Lapsed | 1973-10-26 | 1975-05-20 | 25 | Details |
| US3884690A | Polyester photoconductors and matrix materials | Expired / Lapsed | 1973-09-27 | 1975-05-20 | 8 | Details |
| US3880147A | R-R interval histogram instrument system | Expired / Lapsed | 1973-03-22 | 1975-04-29 | 9 | Details |
| US3876944A | Dibinary encoding technique | Expired / Lapsed | 1970-08-06 | 1975-04-08 | 36 | Details |
| US3873207A | Polarizing interferometer | Expired / Lapsed | 1973-03-09 | 1975-03-25 | 21 | Details |
| US3870516A | Method of imaging photoconductor in change transport binder | Expired / Lapsed | 1973-06-20 | 1975-03-11 | 16 | Details |
| US3867571A | Flying spot scanner | Expired / Lapsed | 1972-11-27 | 1975-02-18 | 17 | Details |
| US3856548A | Strippable overcoating for improved xerographic plates | Expired / Lapsed | 1973-01-05 | 1974-12-24 | 14 | Details |
| US3854449A | Development apparatus | Expired / Lapsed | 1972-05-22 | 1974-12-17 | 7 | Details |
| US3849907A | Fusing apparatus | Expired / Lapsed | 1973-12-04 | 1974-11-26 | 12 | Details |
| US3848992A | Developer blade cleaning | Expired / Lapsed | 1973-05-03 | 1974-11-19 | 13 | Details |
| US3845951A | Foraminous sheet registration system | Expired / Lapsed | 1973-06-05 | 1974-11-05 | 8 | Details |
| US3838220A | Controller for automatically answering and disconnecting ca… | Expired / Lapsed | 1973-02-28 | 1974-09-24 | 14 | Details |
| US3838260A | Microprogrammable control memory diagnostic system | Expired / Lapsed | 1973-01-22 | 1974-09-24 | 14 | Details |
| US3833911A | Reproduction system and method with simplex and duplex mode… | Expired / Lapsed | 1972-12-29 | 1974-09-03 | 12 | Details |
| US3830750A | Encapsulating substantially soluble portion of core materia… | Expired / Lapsed | 1971-12-30 | 1974-08-20 | 0 | Details |
| US3816113A | Nematic liquid crystalline compositions having extended mes… | Expired / Lapsed | 1971-09-13 | 1974-06-11 | 10 | Details |
| US3813157A | Control logic for trouble detection and recovery | Expired / Lapsed | 1973-04-06 | 1974-05-28 | 12 | Details |
| US3812905A | Dynamic barrier for heat pipe | Expired / Lapsed | 1972-11-17 | 1974-05-28 | 16 | Details |
| US3810105A | Computer input-output system | Expired / Lapsed | 1972-08-31 | 1974-05-07 | 24 | Details |
| US3804516A | Fire detecting device for a photographic printing machine | Expired / Lapsed | 1972-12-11 | 1974-04-16 | 10 | Details |
| US3804618A | Liquid crystal imaging system | Expired / Lapsed | 1967-06-16 | 1974-04-16 | 16 | Details |
| US3803050A | Liquid crystalline compositions and imaging systems | Expired / Lapsed | 1971-08-20 | 1974-04-09 | 5 | Details |
| US3799668A | Color standard and method of calibrating a multi-color elec… | Expired / Lapsed | 1973-03-12 | 1974-03-26 | 19 | Details |
| US3790288A | Photometer including variable amplification and dark curren… | Expired / Lapsed | 1971-12-22 | 1974-02-05 | 10 | Details |
| US3788994A | Pressure fixable electrostatagraphic toner | Expired / Lapsed | 1971-12-30 | 1974-01-29 | 0 | Details |
| US3778222A | Fire prevention apparatus | Expired / Lapsed | 1972-09-18 | 1973-12-11 | 14 | Details |
| US3776760A | Method for manufacturing a tetrafluoroethylene polymer-coat… | Expired / Lapsed | 1971-10-06 | 1973-12-04 | 2 | Details |
| US3774592A | Method for providing an improved body electrode electrical … | Expired / Lapsed | 1971-12-16 | 1973-11-27 | 4 | Details |
| US3771131A | Operating condition monitoring in digital computers | Expired / Lapsed | 1972-04-17 | 1973-11-06 | 7 | Details |
| US3757032A | Method and apparatus for selectively enabling a remote rece… | Expired / Lapsed | 1971-01-28 | 1973-09-04 | 28 | Details |
| US3753705A | Agglomeration imaging process using hardenable material | Expired / Lapsed | 1969-10-01 | 1973-08-21 | 34 | Details |
| US3751155A | Pre-development exposure assembly | Expired / Lapsed | 1971-12-30 | 1973-08-07 | 5 | Details |
| US3742484A | Character generating apparatus employing bit stream length … | Expired / Lapsed | 1971-12-28 | 1973-06-26 | 4 | Details |
| US3735092A | Fuser control circuit for copying apparatus | Expired / Lapsed | 1971-10-18 | 1973-05-22 | 9 | Details |
| US3734607A | Color reproduction apparatus | Expired / Lapsed | 1969-06-04 | 1973-05-22 | 16 | Details |
| US3731175A | Servo system for velocity and position control | Expired / Lapsed | 1972-03-06 | 1973-05-01 | 30 | Details |
| US3726584A | Light modulation system | Expired / Lapsed | 1971-05-28 | 1973-04-10 | 22 | Details |
| US3724943A | Color reproduction apparatus | Expired / Lapsed | 1969-06-04 | 1973-04-03 | 10 | Details |
| US3715207A | Electrostatically deformable thermoplastic layer containing… | Expired / Lapsed | 1971-04-13 | 1973-02-06 | 4 | Details |
| US3713861A | Inhibitor device | Expired / Lapsed | 1969-12-04 | 1973-01-30 | 0 | Details |
| US3711713A | Electrically controlled thermal imaging system using a chol… | Expired / Lapsed | 1971-08-05 | 1973-01-16 | 2 | Details |
| US3699555A | Apparatus for rapid action displacement control | Expired / Lapsed | 1970-10-23 | 1972-10-17 | 5 | Details |
| US3687541A | Xerographic duplex technique | Expired / Lapsed | 1970-12-23 | 1972-08-29 | 17 | Details |
| US3682628A | Photoelectrophoretic facsimile transmission system | Expired / Lapsed | 1970-12-09 | 1972-08-08 | 0 | Details |
| US3680950A | Grandjean state liquid crystalline imaging system | Expired / Lapsed | 1971-03-15 | 1972-08-01 | 27 | Details |
| US3680945A | Fabrication of refractive blazed holograms | Expired / Lapsed | 1970-10-23 | 1972-08-01 | 17 | Details |
| US3678896A | Conveyor system | Expired / Lapsed | 1971-01-28 | 1972-07-25 | 3 | Details |
| US3671118A | Apparatus for creating duplex reproductions | Expired / Lapsed | 1969-12-24 | 1972-06-20 | 0 | Details |
| US3669447A | Sheet propelling apparatus | Expired / Lapsed | 1970-09-09 | 1972-06-13 | 9 | Details |
| US3667036A | Electrometer amplifier circuits | Expired / Lapsed | 1970-01-23 | 1972-05-30 | 14 | Details |
| US3666429A | Metallized and brazed ceramics | Expired / Lapsed | 1969-09-29 | 1972-05-30 | 0 | Details |
| US3663396A | Kinescope photoelectrophoretic imaging method and systems | Expired / Lapsed | 1970-02-02 | 1972-05-16 | 18 | Details |
| US3661452A | Xerographic reproduction machine | Expired / Lapsed | 1968-05-24 | 1972-05-09 | 9 | Details |
| US3652156A | Linear-to-drum optical scan converter system | Expired / Lapsed | 1970-01-13 | 1972-03-28 | 4 | Details |
| US3651784A | Low potential development electrode | Expired / Lapsed | 1969-07-03 | 1972-03-28 | 8 | Details |
| US3652148A | Imaging system | Expired / Lapsed | 1969-05-05 | 1972-03-28 | 26 | Details |
| US3650617A | Switching detector | Expired / Lapsed | 1971-02-01 | 1972-03-21 | 6 | Details |
| US3650616A | Mispuff detector | Expired / Lapsed | 1971-02-01 | 1972-03-21 | 9 | Details |
| US3643242A | Transducer displacement control in movable head-type storag… | Expired / Lapsed | 1970-07-09 | 1972-02-15 | 5 | Details |
| US3642364A | Transfer apparatus | Expired / Lapsed | 1969-11-14 | 1972-02-15 | 18 | Details |
| US3640246A | Development apparatus for latent electrostatic images | Expired / Lapsed | 1969-11-07 | 1972-02-08 | 34 | Details |
| US3635373A | Automatic developability control apparatus | Expired / Lapsed | 1969-12-29 | 1972-01-18 | 9 | Details |
| US3630607A | Set separation copier system | Expired / Lapsed | 1970-09-09 | 1971-12-28 | 9 | Details |
| US3609047A | Single beam photometer system wherein the absorbance of a s… | Expired / Lapsed | 1970-03-02 | 1971-09-28 | 7 | Details |
| US3603680A | Ultrasonic paper detection | Expired / Lapsed | 1969-12-24 | 1971-09-07 | 6 | Details |
| US3603935A | Memory port priority access system with inhibition of low p… | Expired / Lapsed | 1969-05-12 | 1971-09-07 | 4 | Details |
| US3598644A | Imaging member fabrication | Expired / Lapsed | 1970-03-17 | 1971-08-10 | 0 | Details |
| US3597071A | Diverse-input system for electrostatically reproducing and … | Expired / Lapsed | 1968-08-30 | 1971-08-03 | 16 | Details |
| US3594759A | Graphical data processor | Expired / Lapsed | 1968-04-29 | 1971-07-20 | 18 | Details |
| US3593151A | Detector for receiver printer startup | Expired / Lapsed | 1968-08-12 | 1971-07-13 | 8 | Details |
| US3587083A | Character generation and display system | Expired / Lapsed | 1967-09-28 | 1971-06-22 | 8 | Details |
| US3582285A | Chemical package | Expired / Lapsed | 1970-03-19 | 1971-06-01 | 0 | Details |
| US3580671A | Exposure apparatus | Expired / Lapsed | 1968-10-24 | 1971-05-25 | 8 | Details |
| US3578445A | Xerographic plate fabrication | Expired / Lapsed | 1967-06-22 | 1971-05-11 | 0 | Details |
| US3573906A | Electrophotographic plate and process | Expired / Lapsed | 1967-01-11 | 1971-04-06 | 0 | Details |
| US3561846A | Radiation sensitive scanner for documents | Expired / Lapsed | 1969-01-31 | 1971-02-09 | 0 | Details |
| US3558811A | Graphic communication electrical interface system | Expired / Lapsed | 1967-05-25 | 1971-01-26 | 31 | Details |
| US3554705A | Chemical package | Expired / Lapsed | 1969-08-14 | 1971-01-12 | 0 | Details |
| US3553708A | Recording apparatus and method employing photoelectroviscou… | Expired / Lapsed | 1968-02-21 | 1971-01-05 | 0 | Details |
| US3552850A | Lubricated blade cleaning of imaging photoconductive members | Expired / Lapsed | 1968-02-01 | 1971-01-05 | 0 | Details |
| US3551146A | Induction imaging system | Expired / Lapsed | 1969-10-16 | 1970-12-29 | 0 | Details |
| US3550556A | Development apparatus | Expired / Lapsed | 1968-01-11 | 1970-12-29 | 0 | Details |
| US3543032A | Device and process for amplifying and storing an image | Expired / Lapsed | 1968-05-06 | 1970-11-24 | 0 | Details |
| US3536398A | Reproduction apparatus | Expired / Lapsed | 1968-08-12 | 1970-10-27 | 0 | Details |
| US3526480A | Automated chemical analyzer | Expired / Lapsed | 1966-12-15 | 1970-09-01 | 0 | Details |
| US3526191A | Duplicating process employing magnetic developer material | Expired / Lapsed | 1966-10-24 | 1970-09-01 | 0 | Details |
| US3524926A | System for delta encoding at selected intervals | Expired / Lapsed | 1966-08-10 | 1970-08-18 | 0 | Details |
| US3520659A | Method and apparatus for use in determining prothrombin tim… | Expired / Lapsed | 1967-10-20 | 1970-07-14 | 0 | Details |
| US3513449A | Wavefront reconstruction method using recording media conta… | Expired / Lapsed | 1966-12-19 | 1970-05-19 | 0 | Details |
| US3510210A | Computer process character animation | Expired / Lapsed | 1967-12-15 | 1970-05-05 | 0 | Details |
| US3501294A | Method of treating the surface of a xerographic plate with … | Expired / Lapsed | 1966-11-14 | 1970-03-17 | 0 | Details |
| US3500236A | Laser stabilizing system | Expired / Lapsed | 1966-10-28 | 1970-03-10 | 0 | Details |
| US3499159A | Polychromatic laser aerosol sizing and ranging (plasar) tec… | Expired / Lapsed | 1967-01-23 | 1970-03-03 | 0 | Details |
| US3497207A | Sorting apparatus for documents | Expired / Lapsed | 1968-01-24 | 1970-02-24 | 0 | Details |
| US3497320A | Automated chemical analyzer | Expired / Lapsed | 1966-12-15 | 1970-02-24 | 0 | Details |
| US3496536A | Data link test apparatus | Expired / Lapsed | 1966-05-02 | 1970-02-17 | 0 | Details |
| US3491199A | Facsimile multiplex system | Expired / Lapsed | 1967-05-12 | 1970-01-20 | 0 | Details |
| US3489848A | Facsimile semi-automatic adjustable tapped delay line equal… | Expired / Lapsed | 1966-08-25 | 1970-01-13 | 0 | Details |
| US3480962A | Facsimile recording system | Expired / Lapsed | 1967-05-22 | 1969-11-25 | 0 | Details |
| US3479453A | Facsimile resolution improvement by utilization of a variab… | Expired / Lapsed | 1965-01-04 | 1969-11-18 | 0 | Details |
| US3477822A | Chemical package | Expired / Lapsed | 1967-12-26 | 1969-11-11 | 0 | Details |
| US3474442A | Format generator circuit | Expired / Lapsed | 1966-10-03 | 1969-10-21 | 2 | Details |
| US3472679A | Coating surfaces | Expired / Lapsed | 1968-11-27 | 1969-10-14 | 0 | Details |
| US3472958A | Facsimile system | Expired / Lapsed | 1966-08-01 | 1969-10-14 | 0 | Details |
| US3472136A | Character generator | Expired / Lapsed | 1966-07-05 | 1969-10-14 | 0 | Details |
| US3472953A | Graphic communication system for transmitting reduced redun… | Expired / Lapsed | 1966-03-17 | 1969-10-14 | 0 | Details |
| US3469834A | Sheet feeder and separator apparatus | Expired / Lapsed | 1967-04-21 | 1969-09-30 | 0 | Details |
| US3454335A | Scanning system | Expired / Lapsed | 1966-12-30 | 1969-07-08 | 0 | Details |
| US3436071A | Work holder | Expired / Lapsed | 1966-04-04 | 1969-04-01 | 0 | Details |
| US3436474A | Facsimile optional double skipping | Expired / Lapsed | 1965-10-01 | 1969-04-01 | 0 | Details |
| US3434832A | Xerographic plate comprising a protective coating of a resi… | Expired / Lapsed | 1964-10-30 | 1969-03-25 | 0 | Details |
| US3430606A | Electroscopic particle sensor | Expired / Lapsed | 1968-01-02 | 1969-03-04 | 0 | Details |
| US3430148A | Phase comparator circuit for providing varying width signal… | Expired / Lapsed | 1966-03-14 | 1969-02-25 | 0 | Details |
| US3428744A | Facsimile line skipping system | Expired / Lapsed | 1965-07-14 | 1969-02-18 | 0 | Details |
| US3426144A | Transceiver apparatus for transmitting and recording optica… | Expired / Lapsed | 1965-09-20 | 1969-02-04 | 0 | Details |
| US3424525A | Microfilm copier attachment | Expired / Lapsed | 1966-05-20 | 1969-01-28 | 2 | Details |
| US3422737A | Variable font character generator | Expired / Lapsed | 1965-12-27 | 1969-01-21 | 2 | Details |
| US3416865A | Optical density measuring system | Expired / Lapsed | 1964-11-27 | 1968-12-17 | 0 | Details |
| US3409356A | Conveyor for documents | Expired / Lapsed | 1966-09-01 | 1968-11-05 | 0 | Details |
| US3397982A | Xerographic plate with an inorganic glass binder having an … | Expired / Lapsed | 1964-12-21 | 1968-08-20 | 0 | Details |
| US3396965A | Sensor gauge | Expired / Lapsed | 1966-10-11 | 1968-08-13 | 0 | Details |
| US3384488A | Polychromatic photoelectrophoretic imaging composition | Expired / Lapsed | 1967-07-21 | 1968-05-21 | 0 | Details |
| US3382487A | Dataphone driven remote display system | Expired / Lapsed | 1965-12-27 | 1968-05-07 | 2 | Details |
| US3360652A | Fail safe photoelectric sheet sensing machine control circu… | Expired / Lapsed | 1964-10-14 | 1967-12-26 | 2 | Details |
| US3359566A | Motor action capillary | Expired / Lapsed | 1966-08-01 | 1967-12-19 | 2 | Details |
| US3340416A | Radiation generator having a conductive coating on a piezoe… | Expired / Lapsed | 1964-12-28 | 1967-09-05 | 2 | Details |
| US3338991A | Method of forming electrostatographic toner particles | Expired / Lapsed | 1964-07-02 | 1967-08-29 | 2 | Details |
| US3337718A | Light scan recording and readout | Expired / Lapsed | 1964-01-02 | 1967-08-22 | 1 | Details |
| US3335003A | Reflex xerographic process | Expired / Lapsed | 1963-10-09 | 1967-08-08 | 2 | Details |
| US3332328A | Xerographic developer seal and process | Expired / Lapsed | 1965-03-01 | 1967-07-25 | 4 | Details |
| US3332396A | Xerographic developing apparatus with controlled corona mea… | Expired / Lapsed | 1963-12-09 | 1967-07-25 | 2 | Details |
| US3322893A | Background scanning system for facsimile communication | Expired / Lapsed | 1963-12-11 | 1967-05-30 | 2 | Details |
| US3313623A | Line sequential color xerography | Expired / Lapsed | 1961-09-05 | 1967-04-11 | 4 | Details |
| US3312548A | Xerographic plates | Expired / Lapsed | 1965-12-27 | 1967-04-04 | 2 | Details |
| US3312547A | Xerographic plate and processes of making and using same | Expired / Lapsed | 1964-07-02 | 1967-04-04 | 2 | Details |
| US3308475A | Electroviscously controlled recorder | Expired / Lapsed | 1964-12-21 | 1967-03-07 | 2 | Details |
| US3266366A | Automatic xerographic apparatus | Expired / Lapsed | 1963-09-09 | 1966-08-16 | 2 | Details |
| US3264407A | Facsimile scanning apparatus | Expired / Lapsed | 1963-06-24 | 1966-08-02 | 2 | Details |
| US3256089A | Masked plate xerography | Expired / Lapsed | 1964-03-02 | 1966-06-14 | 2 | Details |
| US3234020A | Plate for electrostatic electrophotography | Expired / Lapsed | 1961-06-21 | 1966-02-08 | 1 | Details |
| US3220324A | Photoconductively controlled corona charging | Expired / Lapsed | 1963-11-12 | 1965-11-30 | 2 | Details |
| US3219993A | Image formation and display utilizing a thermotropically co… | Expired / Lapsed | 1962-10-24 | 1965-11-23 | 2 | Details |
| US3220012A | Simultaneous recording and display system | Expired / Lapsed | 1962-05-03 | 1965-11-23 | 2 | Details |
| US3217209A | Printed circuits with resistive and capacitive elements | Expired / Lapsed | 1960-05-12 | 1965-11-09 | 2 | Details |
| US3205403A | Electroluminescent display systems | Expired / Lapsed | 1962-01-22 | 1965-09-07 | 2 | Details |
| US3203394A | Xerographic development apparatus | Expired / Lapsed | 1962-10-01 | 1965-08-31 | 2 | Details |
| US3196767A | Document copy mechanism | Expired / Lapsed | 1963-09-09 | 1965-07-27 | 2 | Details |
| US3190199A | Xerographic copying apparatus | Expired / Lapsed | 1963-01-02 | 1965-06-22 | 2 | Details |
| US3170790A | Red sensitive xerographic plate and process therefor | Expired / Lapsed | 1959-01-08 | 1965-02-23 | 1 | Details |
| US3155022A | Buffer for electronic display readout | Expired / Lapsed | 1963-05-31 | 1964-11-03 | 1 | Details |
| US3121007A | Photo-active member for xerography | Expired / Lapsed | 1958-02-12 | 1964-02-11 | 2 | Details |
| US3094049A | Xerographic developer measuring apparatus | Expired / Lapsed | 1961-02-03 | 1963-06-18 | 2 | Details |
| US3093039A | Apparatus for transferring powder images and method therefor | Expired / Lapsed | 1958-05-12 | 1963-06-11 | 2 | Details |
| US3084043A | Liquid development of electrostatic latent images | Expired / Lapsed | 1959-05-07 | 1963-04-02 | 2 | Details |
| US3080318A | Three-component xerographic toner | Expired / Lapsed | 1958-03-13 | 1963-03-05 | 0 | Details |
| US3062095A | Projector optical scanning system | Expired / Lapsed | 1959-07-02 | 1962-11-06 | 0 | Details |
| US3061911A | Method of making printed circuits | Expired / Lapsed | 1958-01-31 | 1962-11-06 | 0 | Details |
| US3045644A | Two-color electrostatic printing apparatus | Expired / Lapsed | 1957-06-06 | 1962-07-24 | 0 | Details |
| US3015305A | Development of electrostatic images | Expired / Lapsed | 1958-05-23 | 1962-01-02 | 0 | Details |
| US3013346A | Xerographic apparatus | Expired / Lapsed | 1959-05-07 | 1961-12-19 | 0 | Details |
| US3013703A | Powder dispensing apparatus | Expired / Lapsed | 1958-11-28 | 1961-12-19 | 0 | Details |
| US3011473A | Xerographic apparatus | Expired / Lapsed | 1958-05-01 | 1961-12-05 | 0 | Details |
| US2987660A | Xerographic charging | Expired / Lapsed | 1955-06-06 | 1961-06-06 | 0 | Details |
| US2965266A | Xerographic toner dispenser | Expired / Lapsed | 1958-04-30 | 1960-12-20 | 0 | Details |
| US2965481A | Electrostatic charging and image formation | Expired / Lapsed | 1955-08-01 | 1960-12-20 | 2 | Details |
| US2962376A | Xerographic member | Expired / Lapsed | 1958-05-14 | 1960-11-29 | 2 | Details |
| US2919967A | High-speed electrostatic alphanumerical printer | Expired / Lapsed | 1957-06-06 | 1960-01-05 | 0 | Details |
| US2914221A | Aerosol bomb development | Expired / Lapsed | 1955-08-16 | 1959-11-24 | 1 | Details |
| US2911944A | Xerographic development apparatus | Expired / Lapsed | 1954-09-16 | 1959-11-10 | 0 | Details |
| US2901348A | Radiation sensitive photoconductive member | Expired / Lapsed | 1953-03-17 | 1959-08-25 | 2 | Details |
| US2885556A | Simultaneous charging device and method | Expired / Lapsed | 1955-08-01 | 1959-05-05 | 0 | Details |
| US2879397A | Image development | Expired / Lapsed | 1955-12-19 | 1959-03-24 | 2 | Details |
| US2874064A | Xerographic cleaner | Expired / Lapsed | 1955-05-16 | 1959-02-17 | 0 | Details |
| US2860048A | Xerographic plate | Expired / Lapsed | 1955-06-13 | 1958-11-11 | 2 | Details |
| US2859129A | Process for developing electrostatic images and apparatus t… | Expired / Lapsed | 1956-01-11 | 1958-11-04 | 1 | Details |
| US2843084A | Xerographic apparatus with endless development electrode | Expired / Lapsed | 1955-06-16 | 1958-07-15 | 0 | Details |
| US2833648A | Transfer of electrostatic charge pattern | Expired / Lapsed | 1953-07-16 | 1958-05-06 | 2 | Details |
| US2824545A | Apparatus for developing xerographic images | Expired / Lapsed | 1955-02-01 | 1958-02-25 | 0 | Details |
| US2824813A | Method for developing electrostatic latent images | Expired / Lapsed | 1952-05-12 | 1958-02-25 | 0 | Details |
| US2817765A | Xerographic method | Expired / Lapsed | 1956-01-03 | 1957-12-24 | 0 | Details |
| US2811135A | Powder charging device | Expired / Lapsed | 1954-12-29 | 1957-10-29 | 0 | Details |
| US2803542A | Xerographic plate | Expired / Lapsed | 1955-07-26 | 1957-08-20 | 2 | Details |
| US2803541A | Xerographic plate | Expired / Lapsed | 1953-05-29 | 1957-08-20 | 2 | Details |
| US2792971A | Particle aerosol generation | Expired / Lapsed | 1955-03-03 | 1957-05-21 | 0 | Details |
| US2788288A | Process and composition for developing an electrostatic ima… | Expired / Lapsed | 1953-07-29 | 1957-04-09 | 1 | Details |
| US2777957A | Corona discharge device | Expired / Lapsed | 1950-04-06 | 1957-01-15 | 0 | Details |
| US2756676A | Method for the production of electrophotographic prints | Expired / Lapsed | 1953-05-04 | 1956-07-31 | 2 | Details |
| US2701765A | Xerographic fusing apparatus | Expired / Lapsed | 1951-06-18 | 1955-02-08 | 2 | Details |
| US2684902A | Image transfer mechanism for electrostatically adhering ima… | Expired / Lapsed | 1951-11-23 | 1954-07-27 | 2 | Details |
| US2663636A | Electrophotographic plate and method of producing same | Expired / Lapsed | 1949-05-25 | 1953-12-22 | 2 | Details |
| US2657152A | Process of producing an electrophotographic plate | Expired / Lapsed | 1950-03-31 | 1953-10-27 | 2 | Details |
| US2626865A | Portable electrophotographic powder-image transfer mechanism | Expired / Lapsed | 1951-05-08 | 1953-01-27 | 2 | Details |
| US2484782A | Method of removing electroscopic powder from an electrophot… | Expired / Lapsed | 1948-02-27 | 1949-10-11 | 0 | Details |
| US2047478A | Paper feeding and cutting mechanism | Expired / Lapsed | 1935-10-28 | 1936-07-14 | 0 | Details |
| US1992492A | Photocopy machine | Expired / Lapsed | 1934-04-03 | 1935-02-26 | 0 | Details |