Seiji Usui
6Patents
4h-index
12Co-inventors
54Inventor score
Filing activity: Jun 20, 1978 → Oct 23, 2008
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4177126A | Reference electrode | Physics | 20 | Expired |
| US4627624A | Packing having multiple seal portions | Emerging Cross-Sectional Technologies | 10 | Expired |
| US4725407A | Flow through type liquid analyzer | Emerging Cross-Sectional Technologies | 6 | Expired |
| US4626512A | Standard solution for simultaneously calibrating a plurality of ion electrodes | Emerging Cross-Sectional Technologies | 4 | Expired |
| US8174748B2 | Mirror and optical scanning device | Physics | 3 | Active |
| US4556473A | Flow through type glass electrode | Physics | 3 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.