NTT Inc
NTT IncActive Patents
0
Total Holdings
43
Patent Holdings
Filter in Explorer →| Patent No. | Title | Status | Filing Date | Grant Date | Claims | Actions |
|---|---|---|---|---|---|---|
| JPH0878657A | Optical / electronic hybrid mounting substrate and its manu… | Expired / Lapsed | 1994-08-09 | — | 0 | Details |
| JPS63152243A | Storage type communication network | Expired / Lapsed | 1986-12-17 | — | 0 | Details |
| EP0171615A2 | Hybrid optical integrated circuit and fabrication method th… | Expired / Lapsed | 1985-07-12 | — | 33 | Details |
| JPS60231208A | Control method of automatic machine | Expired / Lapsed | 1984-05-01 | — | 0 | Details |
| JPS60219647A | Multi-layer recording medium | Expired / Lapsed | 1984-04-13 | — | 0 | Details |
| JPS60202545A | Multi-layer optical recording and reproducing method | Expired / Lapsed | 1984-03-27 | — | 0 | Details |
| JPS60172842A | Controller of optical reception circuit | Expired / Lapsed | 1984-02-06 | — | 0 | Details |
| JPS6091879A | Supersonic wave driving method | Expired / Lapsed | 1983-10-24 | — | 0 | Details |
| JPS6040542A | optical memory medium | Expired / Lapsed | 1983-08-12 | — | 0 | Details |
| JPS5860726A | Optical switch | Expired / Lapsed | 1981-10-08 | — | 0 | Details |
| JPS57193143A | Optical polarized wave transmitting system | Expired / Lapsed | 1981-05-25 | — | 0 | Details |
| JPS5335330A | Character display control unit | Expired / Lapsed | 1976-09-13 | — | 0 | Details |
| JPS51139747A | Corrugate horn | Expired / Lapsed | 1975-05-28 | — | 0 | Details |
| US5546394A | Message fragmenting in a time diversity radio system | Expired / Lapsed | 1994-12-09 | 1996-08-13 | 31 | Details |
| US5216733A | Polarization maintaining optical fiber connector including … | Expired / Lapsed | 1992-03-10 | 1993-06-01 | 24 | Details |
| US4928278A | IC test system | Expired / Lapsed | 1988-08-05 | 1990-05-22 | 30 | Details |
| US4894706A | Three-dimensional packaging of semiconductor device chips | Expired / Lapsed | 1986-02-14 | 1990-01-16 | 42 | Details |
| US4547811A | Method and apparatus for gray level signal processing | Expired / Lapsed | 1982-06-25 | 1985-10-15 | 18 | Details |
| US4521069A | Optical switch | Expired / Lapsed | 1982-04-01 | 1985-06-04 | 15 | Details |
| US4479910A | Method for production of optical fiber connectors | Expired / Lapsed | 1982-04-13 | 1984-10-30 | 6 | Details |
| US4450031A | Ion shower apparatus | Expired / Lapsed | 1983-09-08 | 1984-05-22 | 11 | Details |
| US4399372A | Integrated circuit having spare parts activated by a high-t… | Expired / Lapsed | 1980-12-08 | 1983-08-16 | 16 | Details |
| US4381269A | Fabrication of a low-loss plastic optical fiber | Expired / Lapsed | 1981-10-30 | 1983-04-26 | 25 | Details |
| US4379946A | Signalling system and signal control equipment for multi-ad… | Expired / Lapsed | 1981-05-20 | 1983-04-12 | 12 | Details |
| US4326294A | Space diversity reception system having compensation means … | Expired / Lapsed | 1980-01-21 | 1982-04-20 | 15 | Details |
| US4320523A | Digital signal reception system | Expired / Lapsed | 1980-02-04 | 1982-03-16 | 18 | Details |
| US4300390A | Apparatus for determining positional coordinates utilizing … | Expired / Lapsed | 1979-09-14 | 1981-11-17 | 9 | Details |
| US4205341A | Picture signal coding apparatus | Expired / Lapsed | 1978-11-14 | 1980-05-27 | 11 | Details |
| US4144412A | Method of assigning a radio channel to a calling mobile bod… | Expired / Lapsed | 1977-01-17 | 1979-03-13 | 21 | Details |
| US4127744A | Mobile radio communication system | Expired / Lapsed | 1977-07-14 | 1978-11-28 | 7 | Details |
| US4125860A | Reproducer for an eraseable videodisc | Expired / Lapsed | 1976-06-08 | 1978-11-14 | 15 | Details |
| US4096440A | Control system for mobile radio communication | Expired / Lapsed | 1977-04-22 | 1978-06-20 | 4 | Details |
| US4070590A | Sensing circuit for memory cells | Expired / Lapsed | 1976-08-09 | 1978-01-24 | 7 | Details |
| US4057758A | Mobile diversity radio communication system | Expired / Lapsed | 1975-10-02 | 1977-11-08 | 20 | Details |
| US4047221A | Interframe coding apparatus | Expired / Lapsed | 1976-09-30 | 1977-09-06 | 9 | Details |
| US4032846A | Digital mobile communication system and method | Expired / Lapsed | 1975-10-08 | 1977-06-28 | 5 | Details |
| US3950073A | Eccentric core optical waveguide | Expired / Lapsed | 1974-05-23 | 1976-04-13 | 16 | Details |
| US3763493A | Antenna device applicable for two different frequency bands | Expired / Lapsed | 1971-10-06 | 1973-10-02 | 8 | Details |
| US3698001A | Frequency group separation filter device using laminated di… | Expired / Lapsed | 1970-11-05 | 1972-10-10 | 14 | Details |
| US3661441A | Arrangement for acousto-optical light deflection | Expired / Lapsed | 1970-10-27 | 1972-05-09 | 23 | Details |
| US3484658A | Temperature compensated semiconductor resistor | Expired / Lapsed | 1967-08-21 | 1969-12-16 | 0 | Details |
| US3265814A | Phonetic typewriter system | Expired / Lapsed | 1964-11-30 | 1966-08-09 | 2 | Details |
| US2928008A | Signal lockout device used in telephone exchange system or … | Expired / Lapsed | 1957-02-12 | 1960-03-08 | 0 | Details |