Hitachi Ltd
Hitachi LtActive Patents
0
Total Holdings
9
Patent Holdings
Filter in Explorer →| Patent No. | Title | Status | Filing Date | Grant Date | Claims | Actions |
|---|---|---|---|---|---|---|
| US5140453A | Optical receiving method utilizing polarization diversity a… | Expired / Lapsed | 1988-03-11 | 1992-08-18 | 18 | Details |
| US4793359A | Centering balloon structure for transluminal angioplasty ca… | Expired / Lapsed | 1987-04-24 | 1988-12-27 | 12 | Details |
| US4410985A | Data transmission system and method | Expired / Lapsed | 1981-03-25 | 1983-10-18 | 23 | Details |
| US4275321A | Drip-proof type electrical rotating machine | Expired / Lapsed | 1978-08-23 | 1981-06-23 | 7 | Details |
| US4239124A | Fluid-tight closure apparatus | Expired / Lapsed | 1978-10-20 | 1980-12-16 | 18 | Details |
| US4214305A | Multi-processor data processing system | Expired / Lapsed | 1978-06-20 | 1980-07-22 | 8 | Details |
| US3990092A | Resistance element for semiconductor integrated circuit | Expired / Lapsed | 1975-01-13 | 1976-11-02 | 13 | Details |
| US3355646A | Optimum driving method for step motors | Expired / Lapsed | 1965-04-07 | 1967-11-28 | 2 | Details |
| US3284750A | Low-temperature, negative-resistance element | Expired / Lapsed | 1964-03-25 | 1966-11-08 | 2 | Details |