Gordon B. Spellman
28Patents
10h-index
25Co-inventors
75Inventor score
Filing activity: Feb 18, 1975 → May 30, 1997
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4504964A | Laser beam plasma pinch X-ray system | Emerging Cross-Sectional Technologies | 81 | Expired |
| US4536884A | Plasma pinch X-ray apparatus | Electricity | 65 | Expired |
| US4618971A | X-ray lithography system | Electricity | 61 | Expired |
| US4633492A | Plasma pinch X-ray method | Electricity | 60 | Expired |
| US4295058A | Radiant energy activated semiconductor switch | Emerging Cross-Sectional Technologies | 29 | Expired |
| US6144288A | Remote wireless switch sensing circuit using RF transceiver in combination with a SAW chirp processor | Physics | 23 | Expired |
| US3971056A | Semiconductor temperature switches | Electricity | 23 | Expired |
| US4050083A | Integrated thermally sensitive power switching semiconductor device, including a thermally self-protected version | Electricity | 17 | Expired |
| US4323793A | Thyristor having widened region of temperature sensitivity with respect to breakover voltage | Electricity | 17 | Expired |
| US5951276A | Electrically enhanced hot surface igniter | Mechanical Engineering; Lighting; Heating | 12 | Expired |
| US4516144A | Columnated and trimmed magnetically sensitive semiconductor | Electricity | 10 | Expired |
| US5637843A | Electromechanical programmer/timer | Electricity | 9 | Expired |
| US4529998A | Amplified gate thyristor with non-latching amplified control transistors across base layers | Electricity | 7 | Expired |
| US4268846A | Integrated gate turn-off device with lateral regenerative portion and vertical non-regenerative power portion | Electricity | 7 | Expired |
| US4398205A | Gate turn-off device with high turn-off gain | Electricity | 5 | Expired |
| US4184126A | Temperature sensitive astable multivibrator | Physics | 5 | Expired |
| US4112458A | Silicon thyristor sensitive to low temperature with thermal switching characteristics at temperatures less than 50.degree. C | Physics | 5 | Expired |
| US4206646A | Transducer combining comparator or converter function with sensor function | Physics | 5 | Expired |
| US4185253A | Temperature sensitive relaxation oscillator | Electricity | 4 | Expired |
| US4087848A | Thermally self-protected power switching semiconductor device | Electricity | 4 | Expired |
| US4187513A | Solid state current limiter | Emerging Cross-Sectional Technologies | 3 | Expired |
| US5471032A | Electrical resistance ignitor with spaced parallel filaments brazed in refractory block recesses | Emerging Cross-Sectional Technologies | 3 | Expired |
| US4213067A | Integrated gate turn-off device with non-regenerative power portion and lateral regenerative portion having split emission path | Electricity | 3 | Expired |
| US4132933A | Electromechanical chopper for speed control of battery powered devices | Emerging Cross-Sectional Technologies | 3 | Expired |
| USRE30514E | Thermally self-protected power switching semiconductor device | General | 2 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.