Ryokichi Igarashi
1Patents
1h-index
1Co-inventors
22Inventor score
Filing activity: Dec 1, 1980 → Dec 1, 1980
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4393899A | Plugging apparatus | Emerging Cross-Sectional Technologies | 39 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.