Junichi Ishiwata
7Patents
5h-index
8Co-inventors
52Inventor score
Filing activity: Jul 18, 1974 → Mar 10, 1993
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4481598A | Electronic equipment having a second function keying system | Physics | 22 | Expired |
| US4449057A | Solar cell power supply device | Emerging Cross-Sectional Technologies | 13 | Expired |
| US3947753A | Voltage regulator including an LED to provide a reference voltage | Physics | 9 | Expired |
| US4686643A | Electronic equipment selectively storing a frequently used conversion function | Physics | 8 | Expired |
| US4017753A | Shaped quartz crystal resonator | Electricity | 6 | Expired |
| US5606255A | Hall effect sensing apparatus for moving object having an adjustable magnetor yoke | Physics | 3 | Expired |
| US4473302A | Electronic device | Physics | 0 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.