Terminal Data Corporation
21Patents
0Active
21Granted
31Portfolio score
Filing activity: Nov 25, 1974 → Jun 30, 1992
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5293432A | Document image scanner with variable resolution windows | Physics | 21 | Expired |
| US4424535A | Document video digitizer | Electricity | 14 | Expired |
| US4027870A | End for end document inverter | Performing Operations; Transporting | 13 | Expired |
| US3988062A | Two-sided document recorder | Physics | 12 | Expired |
| US4704632A | Electronic camera for digital processing of CCD data | Electricity | 11 | Expired |
| US4052128A | Method of moving a document for stationarily exhibiting both sides thereof | Physics | 8 | Expired |
| US4087166A | Microfiche roll reproducer | Physics | 7 | Expired |
| US4472662A | Deflection circuit | Electricity | 7 | Expired |
| US3998544A | Synchronous auxiliary camera projector | Physics | 7 | Expired |
| US4277190A | Indicia printer | Physics | 6 | Expired |
| US4324474A | Microfilming system | Physics | 6 | Expired |
| US4093370A | Indicia recording device | Physics | 5 | Expired |
| US4331275A | Orthogonal film drive | Physics | 4 | Expired |
| US4007889A | Flow camera film transport | Physics | 4 | Expired |
| US4193685A | Fixed message carrier | Physics | 4 | Expired |
| US4119372A | Microfiche inspection apparatus | Physics | 3 | Expired |
| US4466021A | Electronic camera | Electricity | 3 | Expired |
| US3982752A | Document guide | Physics | 2 | Expired |
| US4498761A | Cine-mode camera | Physics | 1 | Expired |
| US4175855A | Electronic exposure control | Physics | 1 | Expired |
| US4249821A | Belt microfilm camera | Physics | 1 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.