Kiyoshi Koizumi
3Patents
3h-index
14Co-inventors
47Inventor score
Filing activity: Feb 1, 1988 → Jul 24, 2003
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4879973A | Automatic tube circumference scanning apparatus | Physics | 56 | Expired |
| US7392158B2 | Drive unit for compressor and refrigerator | Emerging Cross-Sectional Technologies | 24 | Expired |
| US4872347A | Automated ultrasonic examination system for heat transfer tubes in a boiler | Physics | 6 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.