Yoshiaki Okano
22Patents
9h-index
25Co-inventors
75Inventor score
Filing activity: Mar 10, 1988 → Dec 1, 2017
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5488462A | Electrophotographic apparatus having developing device with seals for preventing toner leakage | Physics | 36 | Expired |
| US5655178A | Electrophotographic apparatus having cleaning device and developing device configured to prevent toner leakage | Physics | 24 | Expired |
| US5412364A | Toner pack and development device for use in electrophotographic apparatus | Emerging Cross-Sectional Technologies | 23 | Expired |
| US4827160A | Dynamic decoder circuit with charge-sharing prevention means | Physics | 17 | Expired |
| US5692232A | Electrophotographic apparatus that prevents toner from attaching to a contact member of a transfer device | Physics | 12 | Expired |
| US5404213A | Electrophotographic printing apparatus capable of printing images by electrophotographic processing and its start-up method | Physics | 12 | Expired |
| US5162893A | Semiconductor integrated circuit device with an enlarged internal logic circuit area | Electricity | 12 | Expired |
| US5438397A | Image forming apparatus | Physics | 11 | Expired |
| US5420668A | Image forming apparatus | Physics | 10 | Expired |
| US5600417A | Developing device for electrophotographic apparatus | Physics | 8 | Expired |
| US6643478B2 | Fixing device and temperature control method in fixing device | Physics | 7 | Expired |
| US5669053A | Roller transfer device and transfer roller manufacturing method | Physics | 6 | Expired |
| US6625418B2 | Image forming apparatus, method for forming image, and fixing device | Physics | 4 | Expired |
| US9864312B1 | Fixing device that can suppress variation in temperature, and image forming apparatus having the fixing device | Physics | 3 | Active |
| US9832328B2 | Character recognition apparatus and character recognition method | Electricity | 2 | Active |
| US5537192A | Transfer roller and toner for electrophotographic apparatus | Physics | 1 | Expired |
| US7233748B2 | Color image forming apparatus and color image forming method having overlapping toners | Physics | 1 | Expired |
| US8633571B2 | Semiconductor device and test method | Electricity | 1 | Active |
| US9964903B1 | Fixing device that can suppress variation in temperature, and image forming apparatus having the fixing device | Physics | 0 | Active |
| US7496304B2 | Color image forming apparatus and color image forming method having overlapping toners | Physics | 0 | Active |
| US9250584B1 | Fixer that forms a nip with an induction-heated belt and an image forming apparatus having the same | Physics | 0 | Active |
| US9081050B2 | Semiconductor device and test method | Electricity | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.