John W. Shaffer
87Patents
10h-index
37Co-inventors
78Inventor score
Filing activity: Jan 22, 1973 → Dec 8, 2015
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4017728A | Multilamp photoflash unit having radiant-energy-activated quick-disconnect switch | Physics | 31 | Expired |
| US3951903A | Modified polycarbonate resin | Chemistry; Metallurgy | 21 | Expired |
| US4341817A | Flashlamp containment coating | Performing Operations; Transporting | 20 | Expired |
| USD334244S | Fluorescent lamp | General | 19 | Expired |
| US4059388A | Photoflash lamp | Mechanical Engineering; Lighting; Heating | 17 | Expired |
| US4320572A | Die-stamped circuit board assembly having relief means-method of making | Emerging Cross-Sectional Technologies | 17 | Expired |
| US4372210A | Pyrotechnic cap with mechanically desensitized composition | Chemistry; Metallurgy | 13 | Expired |
| US4765929A | Silk-screenable circuit paste | Electricity | 12 | Expired |
| US5036244A | Light-diffusing coating for a glass electric lamp bulb | Electricity | 12 | Expired |
| US4330821A | Radiation switch for photoflash unit | Electricity | 11 | Expired |
| US5757129A | Low-pressure mercury-vapor discharge lamp, and method of placing mercury therein | Electricity | 9 | Expired |
| US4325771A | Method of making a die-stamped circuit board assembly for photoflash devices | Emerging Cross-Sectional Technologies | 9 | Expired |
| US4113424A | Multilamp photoflash unit with static grounding system | Physics | 8 | Expired |
| US5705887A | Fluorescent lamp with end of life arc quenching structure | Electricity | 8 | Expired |
| US4320440A | Connect switch | Electricity | 8 | Expired |
| US4087233A | Radiation switch for photoflash unit | Electricity | 8 | Expired |
| US4101259A | Multilamp photoflash assembly with rotatable actuator | Physics | 7 | Expired |
| US4908546A | Lead-in wire for compact fluorescent lamps | Emerging Cross-Sectional Technologies | 7 | Expired |
| US4200901A | Multilamp photoflash unit with electrostatic protection | Electricity | 7 | Expired |
| US4388557A | High intensity discharge lamp including arc extinguishing means | Electricity | 7 | Expired |
| US5585693A | Fluorescent lamp with end of life arc quenching structure | Electricity | 6 | Expired |
| US4049369A | Photoflash lamp and multilamp unit with electrostatic protection | Mechanical Engineering; Lighting; Heating | 6 | Expired |
| US5717290A | Starting flag structure for tubular low pressure discharge lamps | Electricity | 6 | Expired |
| US4394710A | Die-stamped circuit board assembly for photoflash devices | Emerging Cross-Sectional Technologies | 5 | Expired |
| US3992136A | Photoflash lamp with polycarbonate coating | Mechanical Engineering; Lighting; Heating | 5 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.