Photometrics, Ltd.
16Patents
0Active
16Granted
32Portfolio score
Filing activity: Dec 21, 1990 → May 18, 1998
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5493332A | Modular electronic imaging system which accepts replacement solid state images | Electricity | 132 | Expired |
| US5142557A | CCD and phosphor screen digital radiology apparatus and method for high resolution mammography | Emerging Cross-Sectional Technologies | 63 | Expired |
| US5774214A | Multi-mode imaging apparatus for radiation-emitting or absorbing samples | Physics | 41 | Expired |
| US5393931A | Electrical access to a hermetically sealed chamber using a printed circuit board | Electricity | 17 | Expired |
| US5371470A | Transverse filter circuit | Electricity | 14 | Expired |
| US5134680A | Solid state imaging apparatus with fiber optic bundle | Electricity | 11 | Expired |
| US5515329A | Variable-size first in first out memory with data manipulation capabilities | Physics | 9 | Expired |
| US5386230A | Charged-coupled device camera with voltage adjustment control | Electricity | 8 | Expired |
| US5252850A | Apparatus for contouring a semiconductor, light responsive array with a prescribed physical profile | Electricity | 8 | Expired |
| US5818571A | Apparatus with off-axis light path for characterizing the luminous intensity of lamp | Physics | 7 | Expired |
| US5338948A | Charge-coupled device with open gate structure | Electricity | 6 | Expired |
| US5729336A | Apparatus and method for characterizing the luminous intensity of a lamp using a curved mirror and curved screen | Physics | 6 | Expired |
| US6388710B1 | Solid state camera with separate vacuum and sieve chambers | Electricity | 2 | Expired |
| US5594520A | Low supply voltage shutter driver | Electricity | 1 | Expired |
| US5134275A | Solid state exposuremeter | Physics | 1 | Expired |
| US5760974A | Lens system for maximizing light collection efficiency and transmission | Physics | 0 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.