EMI Group Ltd
EMI GroupActive Patents
0
Total Holdings
8
Patent Holdings
Filter in Explorer →| Patent No. | Title | Status | Filing Date | Grant Date | Claims | Actions |
|---|---|---|---|---|---|---|
| EP0271300A2 | Replication of carriers bearing digitally recorded informat… | Expired / Lapsed | 1987-12-04 | — | 6 | Details |
| DE2348025A1 | METHOD AND DEVICE FOR TREATMENT OF WORKPIECES USING LASER R… | Expired / Lapsed | 1973-09-24 | — | 0 | Details |
| US4806825A | Infra-red phosphors | Expired / Lapsed | 1988-05-19 | 1989-02-21 | 15 | Details |
| US3157821A | Control of lighting effects | Expired / Lapsed | 1960-03-11 | 1964-11-17 | 2 | Details |
| US3114067A | Fluorescent lamp particularly suited to illumination of obj… | Expired / Lapsed | 1960-06-24 | 1963-12-10 | 2 | Details |
| US3114045A | Photo-conductive translucent electroluminescent device and … | Expired / Lapsed | 1957-08-14 | 1963-12-10 | 2 | Details |
| US2866182A | Closed-circuit television systems | Expired / Lapsed | 1957-08-14 | 1958-12-23 | 0 | Details |
| US2866133A | Electric lamp circuit | Expired / Lapsed | 1954-07-02 | 1958-12-23 | 0 | Details |