Seiji Hattori
13Patents
6h-index
15Co-inventors
63Inventor score
Filing activity: Dec 3, 1975 → Jan 30, 2019
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5073926A | Picture communication apparatus | Electricity | 121 | Expired |
| US4955082A | Mobile communication system | Electricity | 84 | Expired |
| US4947452A | Mobile communication system | Electricity | 46 | Expired |
| US5040863A | Optical isolator | Physics | 29 | Expired |
| USD302747S | Diving mask | General | 20 | Expired |
| US4795384A | Band mounting apparatus for a diving fin | Emerging Cross-Sectional Technologies | 16 | Expired |
| US4553301A | Threadedly fixing apparatus | Emerging Cross-Sectional Technologies | 5 | Expired |
| US5940878A | Watertight suit | Emerging Cross-Sectional Technologies | 4 | Expired |
| US4019232A | Ram type steel bar coupling apparatus | Emerging Cross-Sectional Technologies | 3 | Expired |
| US7015706B2 | Semiconductor sensing device using different resistance types | Physics | 2 | Expired |
| US4778425A | Underwater jacket | Performing Operations; Transporting | 2 | Expired |
| US7525322B2 | Capacitive physical quantity sensor and diagnosis method | Performing Operations; Transporting | 1 | Active |
| US10827616B2 | Mounting structure | Emerging Cross-Sectional Technologies | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.