Gregory E. Johnston
14Patents
7h-index
6Co-inventors
59Inventor score
Filing activity: Jan 18, 1990 → Apr 25, 2014
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US7755668B1 | Mobile surveillance system | Electricity | 29 | Expired |
| US5381245A | X-ray film scanning and digitizing apparatus | Electricity | 25 | Expired |
| US5432622A | High-resolution scanning apparatus | Electricity | 22 | Expired |
| US5241406A | X-ray film scanning and digitizing apparatus | Electricity | 21 | Expired |
| US9172913B1 | Automatic counter-surveillance detection camera and software | Electricity | 12 | Active |
| USD745370S1 | See through dome mount | General | 9 | Active |
| US5343308A | Extended dynamic range image digitizing apparatus | Electricity | 7 | Expired |
| US5268567A | Charge collection control circuit for use with charge-coupled photodetector arrays | Electricity | 6 | Expired |
| US5283426A | Methods and apparatus for obtaining nonlinear responses from photodetector arrays | Electricity | 6 | Expired |
| US5535004A | Distance measuring interferometer having specific crossings detection circuit | Electricity | 5 | Expired |
| US8587770B1 | Aircraft collision warning system | Physics | 4 | Active |
| US6791673B1 | Ground surveillance system | Physics | 1 | Expired |
| USD705846S1 | Open frame pan tilt positioner | General | 1 | Active |
| US9470794B1 | Aircraft collision warning system | Physics | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.