HP Inc
HP IncActive Patents
0
Total Holdings
110
Patent Holdings
Filter in Explorer →| Patent No. | Title | Status | Filing Date | Grant Date | Claims | Actions |
|---|---|---|---|---|---|---|
| EP0509297A1 | Transesophageal ultrasound probe | Expired / Lapsed | 1992-03-27 | — | 6 | Details |
| EP0376596A2 | Printing of pixel locations by an ink jet printer using mul… | Expired / Lapsed | 1989-12-20 | — | 13 | Details |
| DE2743562A1 | CONNECTING DEVICE FOR FIBER LIGHT GUIDE | Expired / Lapsed | 1977-09-28 | — | 0 | Details |
| DE2236251B2 | MAGNETO-OPTICAL POLARIMETER | Expired / Lapsed | 1972-07-24 | — | 0 | Details |
| US5555008A | Process for alleviating bleed in printed elements | Expired / Lapsed | 1994-04-06 | 1996-09-10 | 27 | Details |
| US5438554A | Tunable acoustic resonator for clinical ultrasonic transduc… | Expired / Lapsed | 1994-02-28 | 1995-08-01 | 22 | Details |
| US5435314A | Intravascular imaging catheter tip having a dynamic radius | Expired / Lapsed | 1994-03-25 | 1995-07-25 | 15 | Details |
| US4140022B1 | Acoustic imaging apparatus | Expired / Lapsed | 1977-12-20 | 1995-05-16 | 0 | Details |
| US5227953A | Apparatus for retaining and electrically interconnecting mu… | Expired / Lapsed | 1991-10-18 | 1993-07-13 | 21 | Details |
| US5217018A | Acoustic transmission through cladded core waveguide | Expired / Lapsed | 1989-05-16 | 1993-06-08 | 12 | Details |
| US5185034A | Ink-jet inks with improved colors and plain paper capacity | Expired / Lapsed | 1992-05-01 | 1993-02-09 | 7 | Details |
| US5158087A | Differential temperature measurement for ultrasound transdu… | Expired / Lapsed | 1992-01-31 | 1992-10-27 | 23 | Details |
| US5145519A | Specific dye set for thermal ink-jet printing | Expired / Lapsed | 1991-12-17 | 1992-09-08 | 7 | Details |
| US5143547A | Specific dye set for thermal ink-jet printing on plain and … | Expired / Lapsed | 1991-08-26 | 1992-09-01 | 6 | Details |
| US5025790A | Graded frequency sensors | Expired / Lapsed | 1989-05-16 | 1991-06-25 | 16 | Details |
| US4873984A | Techniques for calculating ultrasonic integrated backscatte… | Expired / Lapsed | 1986-05-30 | 1989-10-17 | 13 | Details |
| US4843350A | Coded sequence travelling-wave optical modulator | Expired / Lapsed | 1987-01-20 | 1989-06-27 | 11 | Details |
| US4722346A | Stand-off device with special fluid | Expired / Lapsed | 1986-03-24 | 1988-02-02 | 5 | Details |
| US4500758A | Keyboard switch assembly having sensory feedback | Expired / Lapsed | 1983-07-05 | 1985-02-19 | 15 | Details |
| US4396912A | Method and means for point connecting with a differential i… | Expired / Lapsed | 1981-08-17 | 1983-08-02 | 12 | Details |
| US4387720A | Transducer acoustic lens | Expired / Lapsed | 1980-12-29 | 1983-06-14 | 6 | Details |
| US4386339A | Direct flash analog-to-digital converter and method | Expired / Lapsed | 1982-04-05 | 1983-05-31 | 12 | Details |
| US4240003A | Apparatus and method for suppressing mass/spring mode in ac… | Expired / Lapsed | 1979-03-12 | 1980-12-16 | 4 | Details |
| US4223682A | Beat-to-beat systolic and diastolic indicator | Expired / Lapsed | 1978-04-10 | 1980-09-23 | 18 | Details |
| US4185641A | Pressure dome | Expired / Lapsed | 1978-08-23 | 1980-01-29 | 3 | Details |
| US4181966A | Adaptable programmed calculator including a percent keyboar… | Expired / Lapsed | 1976-04-28 | 1980-01-01 | 8 | Details |
| US4180080A | Electrode assembly for sensing heart activity | Expired / Lapsed | 1978-04-24 | 1979-12-25 | 12 | Details |
| US4170818A | Barrier height voltage reference | Expired / Lapsed | 1977-10-03 | 1979-10-16 | 44 | Details |
| US4167331A | Multi-wavelength incremental absorbence oximeter | Expired / Lapsed | 1976-12-20 | 1979-09-11 | 11 | Details |
| US4149528A | Electrode assembly for sensing heart activity | Expired / Lapsed | 1977-10-03 | 1979-04-17 | 36 | Details |
| US4140022A | Acoustic imaging apparatus | Expired / Lapsed | 1977-12-20 | 1979-02-20 | 52 | Details |
| US4114979A | Fiber optic connector | Expired / Lapsed | 1977-04-29 | 1978-09-19 | 8 | Details |
| US4113381A | Surveying instrument and method | Expired / Lapsed | 1976-11-18 | 1978-09-12 | 8 | Details |
| US4109643A | Perfusion meter | Expired / Lapsed | 1976-06-17 | 1978-08-29 | 4 | Details |
| US4101198A | Fiber optic connector with split ferrule assembly | Expired / Lapsed | 1976-06-21 | 1978-07-18 | 8 | Details |
| US4099240A | Method and apparatus for programmable and remote numeric co… | Expired / Lapsed | 1977-01-14 | 1978-07-04 | 37 | Details |
| US4033669A | Precision optical fiber switch | Expired / Lapsed | 1976-03-11 | 1977-07-05 | 5 | Details |
| US4028538A | Programmable calculator employing algebraic language | Expired / Lapsed | 1974-09-30 | 1977-06-07 | 22 | Details |
| US4028675A | Method and apparatus for refreshing semiconductor memories … | Expired / Lapsed | 1973-05-14 | 1977-06-07 | 11 | Details |
| US4012725A | Programmable calculator | Expired / Lapsed | 1974-05-30 | 1977-03-15 | 52 | Details |
| US3986495A | Optically excited diode current limiter | Expired / Lapsed | 1975-11-03 | 1976-10-19 | 5 | Details |
| US3987303A | Medical-analytical gas detector | Expired / Lapsed | 1975-02-06 | 1976-10-19 | 23 | Details |
| US3976864A | Apparatus and method for testing digital circuits | Expired / Lapsed | 1974-09-03 | 1976-08-24 | 29 | Details |
| US3967266A | Display apparatus having improved cursor enhancement | Expired / Lapsed | 1974-09-16 | 1976-06-29 | 6 | Details |
| US3953848A | Electrocardiograph telemetry system including method and me… | Expired / Lapsed | 1974-04-12 | 1976-04-27 | 4 | Details |
| US3946729A | Ventilator patient monitor | Expired / Lapsed | 1974-10-17 | 1976-03-30 | 16 | Details |
| US3941953A | Keyboard having switches with tactile feedback | Expired / Lapsed | 1971-08-23 | 1976-03-02 | 15 | Details |
| US3884546A | Spectrum shaping with parity sequences | Expired / Lapsed | 1973-07-30 | 1975-05-20 | 19 | Details |
| US3863060A | General purpose calculator with capability for performing i… | Expired / Lapsed | 1972-10-30 | 1975-01-28 | 35 | Details |
| US3820079A | Bus oriented,modular,multiprocessing computer | Expired / Lapsed | 1972-11-20 | 1974-06-25 | 26 | Details |
| US3764902A | Phasemeter employing means for preventing errors in the pha… | Expired / Lapsed | 1972-04-24 | 1973-10-09 | 11 | Details |
| US3758830A | Transducer formed in peripherally supported thin semiconduc… | Expired / Lapsed | 1972-04-10 | 1973-09-11 | 8 | Details |
| US3738756A | Magneto-optic rotation analyzer | Expired / Lapsed | 1971-07-12 | 1973-06-12 | 10 | Details |
| US3737871A | Stack register renamer | Expired / Lapsed | 1971-07-28 | 1973-06-05 | 11 | Details |
| US3721964A | Integrated circuit read only memory bit organized in coinci… | Expired / Lapsed | 1970-02-18 | 1973-03-20 | 13 | Details |
| US3678466A | Electronic calculator | Expired / Lapsed | 1970-10-14 | 1972-07-18 | 3 | Details |
| US3654446A | Method and apparatus for the measurement and display of err… | Expired / Lapsed | 1970-04-03 | 1972-04-04 | 39 | Details |
| US3631343A | Time interval averaging circuit | Expired / Lapsed | 1970-08-27 | 1971-12-28 | 4 | Details |
| US3619058A | Distance measuring apparatus | Expired / Lapsed | 1969-08-24 | 1971-11-09 | 14 | Details |
| US3609326A | Counting apparatus and method using separate counters for r… | Expired / Lapsed | 1969-01-22 | 1971-09-28 | 4 | Details |
| US3602890A | Pen control system for an automatic x-y plotter | Expired / Lapsed | 1969-02-24 | 1971-08-31 | 11 | Details |
| US3567857A | Pulse inhibit circuit | Expired / Lapsed | 1968-03-15 | 1971-03-02 | 21 | Details |
| US3566876A | Defibrillator | Expired / Lapsed | 1967-12-14 | 1971-03-02 | 2 | Details |
| US3565057A | Signal analyzing apparatus for an ultrasonic scanning system | Expired / Lapsed | 1968-12-06 | 1971-02-23 | 2 | Details |
| US3564252A | Radiometer for measuring power an absolute basis | Expired / Lapsed | 1969-02-26 | 1971-02-16 | 8 | Details |
| US3561832A | Quartz resonator pressure transducer | Expired / Lapsed | 1969-12-05 | 1971-02-09 | 0 | Details |
| US3557354A | Signal-to-noise ratio enhancement methods and means | Expired / Lapsed | 1970-01-09 | 1971-01-19 | 4 | Details |
| US3552386A | Arrhythmia detecting apparatus and method | Expired / Lapsed | 1968-12-23 | 1971-01-05 | 14 | Details |
| US3526791A | Low noise controller | Expired / Lapsed | 1968-01-19 | 1970-09-01 | 0 | Details |
| US3524442A | Arrhythmia detector and method | Expired / Lapsed | 1967-12-01 | 1970-08-18 | 0 | Details |
| US3523539A | Demand cardiac pacemaker and method | Expired / Lapsed | 1968-02-26 | 1970-08-11 | 0 | Details |
| US3444456A | Control circuit for low noise controlled rectifier systems | Expired / Lapsed | 1966-12-06 | 1969-05-13 | 0 | Details |
| US3435232A | Beam position detector | Expired / Lapsed | 1966-03-03 | 1969-03-25 | 0 | Details |
| US3413497A | Insulated-gate field effect transistor with electrostatic p… | Expired / Lapsed | 1966-07-13 | 1968-11-26 | 2 | Details |
| US3406564A | Ultrasonic transducer scanning system | Expired / Lapsed | 1965-09-13 | 1968-10-22 | 0 | Details |
| US3403271A | Ultrasonic transducer with absorptive load | Expired / Lapsed | 1966-02-09 | 1968-09-24 | 0 | Details |
| US3375460A | Feedback amplifier having an input current limiting circuit | Expired / Lapsed | 1965-08-04 | 1968-03-26 | 0 | Details |
| US3359366A | Electronic printer | Expired / Lapsed | 1964-03-05 | 1967-12-19 | 2 | Details |
| US3328763A | Electronic desk-type computer | Expired / Lapsed | 1963-10-01 | 1967-06-27 | 2 | Details |
| US3313293A | Multi-electrode needle | Expired / Lapsed | 1964-01-13 | 1967-04-11 | 2 | Details |
| US3304413A | Cardiac output computer | Expired / Lapsed | 1963-03-26 | 1967-02-14 | 2 | Details |
| US3297859A | Counting direction control circuit for use with reversible … | Expired / Lapsed | 1965-06-24 | 1967-01-10 | 2 | Details |
| US3296613A | Integrating converter | Expired / Lapsed | 1963-12-03 | 1967-01-03 | 2 | Details |
| US3274501A | Voltage to frequency converter | Expired / Lapsed | 1964-01-03 | 1966-09-20 | 1 | Details |
| US3273073A | Frequency synthesizer | Expired / Lapsed | 1964-02-19 | 1966-09-13 | 2 | Details |
| US3249796A | Sweep marker circuit | Expired / Lapsed | 1963-08-12 | 1966-05-03 | 1 | Details |
| US3201781A | Analog to digital transducers | Expired / Lapsed | 1962-07-23 | 1965-08-17 | 1 | Details |
| US3192516A | Vibration detector | Expired / Lapsed | 1964-06-25 | 1965-06-29 | 0 | Details |
| US3191072A | High frequency sampler trigger circuits including signal fe… | Expired / Lapsed | 1963-02-28 | 1965-06-22 | 2 | Details |
| US3191065A | Sampling circuit | Expired / Lapsed | 1962-10-03 | 1965-06-22 | 2 | Details |
| US3155822A | Recirculating adder | Expired / Lapsed | 1961-10-02 | 1964-11-03 | 2 | Details |
| US3148337A | Temperature compensated signal-controlled current source | Expired / Lapsed | 1962-10-01 | 1964-09-08 | 2 | Details |
| US3041535A | Electrical measuring instrument | Expired / Lapsed | 1959-01-12 | 1962-06-26 | 0 | Details |
| US3040158A | Proportional temperature controller | Expired / Lapsed | 1960-12-01 | 1962-06-19 | 0 | Details |
| US3040186A | High frequency trigger converters employing negative resist… | Expired / Lapsed | 1960-09-19 | 1962-06-19 | 0 | Details |
| US3040273A | Voltage to frequency converter | Expired / Lapsed | 1958-04-28 | 1962-06-19 | 0 | Details |
| US3014135A | Direct current amplifier and modulator therefor | Expired / Lapsed | 1957-03-04 | 1961-12-19 | 0 | Details |
| US2994825A | Voltage to time-interval converter | Expired / Lapsed | 1958-07-09 | 1961-08-01 | 0 | Details |
| US2945183A | Delay generator | Expired / Lapsed | 1956-08-08 | 1960-07-12 | 0 | Details |
| US2900522A | Solid state network | Expired / Lapsed | 1957-01-08 | 1959-08-18 | 0 | Details |
| US2896086A | Attenuator network | Expired / Lapsed | 1957-07-01 | 1959-07-21 | 0 | Details |
| US2864292A | Tractor mounted plant thinning machine | Expired / Lapsed | 1956-01-18 | 1958-12-16 | 0 | Details |
| US2851596A | Electronic counter | Expired / Lapsed | 1954-04-15 | 1958-09-09 | 0 | Details |
| US2769595A | Frequency counter | Expired / Lapsed | 1952-07-23 | 1956-11-06 | 0 | Details |
| US2762915A | Electronic decade scaler | Expired / Lapsed | 1951-05-21 | 1956-09-11 | 0 | Details |
| US2748272A | Frequency generator | Expired / Lapsed | 1952-06-27 | 1956-05-29 | 0 | Details |
| US2748278A | Sine wave generator | Expired / Lapsed | 1951-05-21 | 1956-05-29 | 0 | Details |
| US2587755A | Frequency measuring or indicating apparatus | Expired / Lapsed | 1948-03-06 | 1952-03-04 | 0 | Details |
| US2418568A | Frequency divider | Expired / Lapsed | 1944-04-11 | 1947-04-08 | 0 | Details |
| US2268872A | Variable frequency oscillation generator | Expired / Lapsed | 1939-07-11 | 1942-01-06 | 0 | Details |