Nobuo Kosaka
14Patents
6h-index
44Co-inventors
66Inventor score
Filing activity: Jan 21, 1993 → Jul 28, 2017
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US7553594B2 | Electrophotographic photosensitive member, method of manufacturing electrophotographic photosensitive member, process cartridge, and electrophotographic apparatus | Physics | 22 | Active |
| US7838190B2 | Electrophotographic photosensitive member with surface layer of fluororesin particles and polyolefin with perfluoroalkyl group | Physics | 21 | Active |
| US9316931B2 | Electrophotographic photosensitive member, electrophotographic apparatus, process cartridge, and condensed polycyclic aromatic compound | Physics | 20 | Active |
| US9389523B2 | Electrophotographic photosensitive member, and electrophotographic apparatus and process cartridge each including the electrophotographic photosensitive member | Physics | 19 | Active |
| US9740117B2 | Electrophotographic photosensitive member, process cartridge, electrophotographic apparatus, and condensed polycyclic aromatic compound | Chemistry; Metallurgy | 18 | Active |
| US7364824B2 | Electrophotographic photosensitive member, process cartridge, and electrophotographic apparatus | Physics | 10 | Active |
| US5891902A | Indole derivatives | Chemistry; Metallurgy | 3 | Expired |
| US5413997A | Triphenylmethane derivatives | Chemistry; Metallurgy | 3 | Expired |
| US6306847A | Condensed purine derivatives | Human Necessities | 2 | Expired |
| US5756735A | Xanthine derivatives | Chemistry; Metallurgy | 1 | Expired |
| US5523464A | Benzenesulfonamide derivatives | Chemistry; Metallurgy | 1 | Expired |
| US5374634A | Pyridine derivatives | Chemistry; Metallurgy | 0 | Expired |
| US5977298A | Calcitonin derivatives | Human Necessities | 0 | Expired |
| US10209637B2 | Electrophotographic photosensitive member, process cartridge, and electrophotographic apparatus | Physics | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.