KDDI Corp
KDDI CorpActive Patents
0
Total Holdings
21
Patent Holdings
Filter in Explorer →| Patent No. | Title | Status | Filing Date | Grant Date | Claims | Actions |
|---|---|---|---|---|---|---|
| JPS6126882A | Long-sized magnetic substance | Expired / Lapsed | 1984-07-18 | — | 0 | Details |
| JPS60249447A | Soft discrimination demodulating system | Expired / Lapsed | 1984-05-25 | — | 0 | Details |
| JPS6017726A | Semiconductor optical switch | Expired / Lapsed | 1983-07-12 | — | 0 | Details |
| US4894861A | Terminal in communication network for notifying originating… | Expired / Lapsed | 1988-11-18 | 1990-01-16 | 4 | Details |
| US4523802A | Unitary mounting structure for semiconductor laser and opti… | Expired / Lapsed | 1982-02-08 | 1985-06-18 | 10 | Details |
| US4490020A | Coupling system for output light of semiconductor laser | Expired / Lapsed | 1981-05-27 | 1984-12-25 | 2 | Details |
| US4477852A | Magneto-optical recording and reproducing system | Expired / Lapsed | 1982-03-15 | 1984-10-16 | 16 | Details |
| US4345816A | Optical fiber introducing equipment for optical submerged r… | Expired / Lapsed | 1981-05-13 | 1982-08-24 | 12 | Details |
| US4303803A | Digital speech interpolation system | Expired / Lapsed | 1979-08-30 | 1981-12-01 | 3 | Details |
| US4295707A | Feed through for optical submerged repeater | Expired / Lapsed | 1979-10-03 | 1981-10-20 | 5 | Details |
| US4218654A | Space diversity system in TDMA communication system | Expired / Lapsed | 1979-02-21 | 1980-08-19 | 4 | Details |
| US4075539A | Step-by-step reciprocating mechanism | Expired / Lapsed | 1976-08-13 | 1978-02-21 | 5 | Details |
| US4057835A | System for converting number of lines of television signal | Expired / Lapsed | 1976-06-29 | 1977-11-08 | 4 | Details |
| US4017684A | System for determining burst sending timing in TDMA communi… | Expired / Lapsed | 1975-07-03 | 1977-04-12 | 5 | Details |
| US3971981A | Magnetism detecting system | Expired / Lapsed | 1974-09-26 | 1976-07-27 | 5 | Details |
| US3946169A | Bilateral signal transmission system | Expired / Lapsed | 1974-07-25 | 1976-03-23 | 5 | Details |
| US3558824A | Time-divisional phase synchronizing apparatus for a time-di… | Expired / Lapsed | 1968-10-04 | 1971-01-26 | 4 | Details |
| US3530397A | Laser element | Expired / Lapsed | 1965-05-27 | 1970-09-22 | 0 | Details |
| US3518662A | Digital transmission system using a multilevel pulse signal | Expired / Lapsed | 1966-09-23 | 1970-06-30 | 0 | Details |
| US2988277A | Borrowing circuit of a binary subtractive circuit and adder | Expired / Lapsed | 1956-05-28 | 1961-06-13 | 0 | Details |
| US2948819A | Device comprising parametrically excited resonators | Expired / Lapsed | 1956-02-27 | 1960-08-09 | 0 | Details |