Hiroji Kumagai
4Patents
3h-index
10Co-inventors
43Inventor score
Filing activity: Dec 20, 1977 → Jun 19, 1984
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4209551A | Method of fabricating a phosphor screen of a color television picture tube | Performing Operations; Transporting | 26 | Expired |
| US4592977A | Lithographic printing plate | Physics | 12 | Expired |
| US4175958A | Dry planographic printing method and plate made by electrophotographic method using conductive toner | Physics | 5 | Expired |
| US4268158A | Dry planographic printing apparatus | Physics | 3 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.