Hiroshi Sawa
9Patents
4h-index
15Co-inventors
54Inventor score
Filing activity: Apr 10, 1979 → Aug 27, 2019
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4897634A | Scattered-light smoke detector with a shielding structure of detector circuits | Emerging Cross-Sectional Technologies | 29 | Expired |
| US4851819A | Photoelectric smoke detector with permanently fixed insect net | Physics | 29 | Expired |
| US4286159A | Detector coupling mechanism | Emerging Cross-Sectional Technologies | 11 | Expired |
| US5302837A | Photoelectric smoke detector with expanded visual field | Physics | 10 | Expired |
| US4292844A | Temperature detecting device | Emerging Cross-Sectional Technologies | 1 | Expired |
| US4295371A | Temperature detecting device | Electricity | 1 | Expired |
| US9337399B2 | Phosphor and light-emitting device | Electricity | 0 | Active |
| US10370590B2 | Phosphor | Chemistry; Metallurgy | 0 | Active |
| US11377593B2 | Phosphor | Chemistry; Metallurgy | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.