KDDI Corp
KDDI CorpActive Patents
0
Total Holdings
10
Patent Holdings
Filter in Explorer →| Patent No. | Title | Status | Filing Date | Grant Date | Claims | Actions |
|---|---|---|---|---|---|---|
| JPS6017726A | Semiconductor optical switch | Expired / Lapsed | 1983-07-12 | — | 0 | Details |
| US4303803A | Digital speech interpolation system | Expired / Lapsed | 1979-08-30 | 1981-12-01 | 3 | Details |
| US4218654A | Space diversity system in TDMA communication system | Expired / Lapsed | 1979-02-21 | 1980-08-19 | 4 | Details |
| US4052670A | Space diversity system in pcm-tdma telecommunication system… | Expired / Lapsed | 1975-12-23 | 1977-10-04 | 5 | Details |
| US4017684A | System for determining burst sending timing in TDMA communi… | Expired / Lapsed | 1975-07-03 | 1977-04-12 | 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 |