Keiichi Iwamoto
12Patents
6h-index
24Co-inventors
62Inventor score
Filing activity: Oct 16, 1986 → May 27, 2003
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4879973A | Automatic tube circumference scanning apparatus | Physics | 56 | Expired |
| US6138514A | Tube flaw detecting method using two probes | Physics | 51 | Expired |
| US5669232A | Refrigerating unit | Mechanical Engineering; Lighting; Heating | 14 | Expired |
| US4907542A | Cleaning system for a horizontal type tube assembly | Mechanical Engineering; Lighting; Heating | 9 | Expired |
| US4935603A | Hot water supply system | Emerging Cross-Sectional Technologies | 9 | Expired |
| US4872347A | Automated ultrasonic examination system for heat transfer tubes in a boiler | Physics | 6 | Expired |
| US6207321A | Sodium secondary battery | Emerging Cross-Sectional Technologies | 6 | Expired |
| US6789428B2 | Method and apparatus for evaluating damage of metal material | Physics | 6 | Expired |
| US6606910B1 | Method and apparatus for evaluating damage of metal material | Physics | 5 | Expired |
| US4920804A | Insert type ultrasonic crack hunting apparatus | Physics | 5 | Expired |
| US4854614A | Cable insert nozzle | Emerging Cross-Sectional Technologies | 5 | Expired |
| US4800927A | Cable insertion nozzle | Physics | 3 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.