Hidetaka Oka
20Patents
10h-index
19Co-inventors
68Inventor score
Filing activity: Dec 1, 1997 → Apr 15, 2014
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US7189489B2 | Oxime ester photoiniators having a combined structure | Physics | 278 | Expired |
| US7759043B2 | Oxime ester photoinitiators | Chemistry; Metallurgy | 259 | Active |
| US6949678B2 | Oxime ester photoinitiators | Performing Operations; Transporting | 40 | Expired |
| US6596445B1 | O-acyloxime photoinitiators | Physics | 40 | Expired |
| US6022906A | .alpha.-aminoacetophenone photoinitiators | Physics | 25 | Expired |
| US7989644B2 | Electroluminescent device | Emerging Cross-Sectional Technologies | 23 | Active |
| US7247659B2 | Photosensitive resin composition | Physics | 23 | Expired |
| US6057380A | Photogeneration of amines from .alpha.-aminoacetophenones | Physics | 22 | Expired |
| US7381842B2 | Oxime ester photoinitiators | Performing Operations; Transporting | 14 | Expired |
| US6485885B1 | Photopolymerizable thermosetting resin compositions | Physics | 11 | Expired |
| US9113536B2 | Electroluminescent device | Chemistry; Metallurgy | 10 | Active |
| US7648738B2 | Oxime ester photoinitiators with heteroaromatic groups | Physics | 9 | Expired |
| US7556843B2 | Photosensitive resin composition | Physics | 5 | Active |
| US8946984B2 | Electroluminescent device | Emerging Cross-Sectional Technologies | 4 | Active |
| US7425585B2 | Photosensitive resin composition | Physics | 4 | Active |
| US8008507B2 | Fluorescent diketopyrrolopyrroles | Emerging Cross-Sectional Technologies | 3 | Active |
| US7829257B2 | Photosensitive resin composition | Physics | 2 | Expired |
| US8735610B2 | Electroluminescent device | Emerging Cross-Sectional Technologies | 2 | Active |
| US7198884B2 | Heat stable photocurable resin composition for dry film resist | Emerging Cross-Sectional Technologies | 1 | Expired |
| US8034531B2 | Photosensitive resin composition comprising a halogen-free colorant | Electricity | 0 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.