Junji Okada
39Patents
9h-index
60Co-inventors
78Inventor score
Filing activity: Mar 10, 1989 → Jul 18, 2017
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6233339A | Physical property based cryptographics | Emerging Cross-Sectional Technologies | 91 | Expired |
| US4952834A | Circuitry for driving ultrasonic motor | Electricity | 75 | Expired |
| US5995262A | Signal transmission bus and signal processing apparatus | Electricity | 58 | Expired |
| US5822475A | Optical bus and signal processor | Physics | 29 | Expired |
| US7095927B2 | Optical distributor and optical distributing system | Physics | 21 | Expired |
| US5376782A | Image pickup device providing decreased image lag | Electricity | 20 | Expired |
| US6065881A | Optical transmission line forming method and apparatus, and optical circuit | Physics | 12 | Expired |
| US9217971B1 | Fixing device, heating member, and image forming apparatus | Physics | 10 | Active |
| US5987198A | Optical bus and optical bus production method including a plurality of light transmission paths | Physics | 9 | Expired |
| US5462891A | Process for manufacturing a semiconductor device using NH.sub.4 OH-H.sub.2 O.sub.2 based etchant for Ti based thin film | Electricity | 9 | Expired |
| US6792213B1 | Optical signal transmitting apparatus, optical data bus system and signal processing apparatus | Physics | 8 | Expired |
| US5213984A | Method of manufacturing an image sensor | Emerging Cross-Sectional Technologies | 6 | Expired |
| US7759840B2 | Ultrasonic motor and vibration detection method for ultrasonic motor | Electricity | 5 | Active |
| US5243177A | Image sensor with noise reduction and diminishment of residual images | Electricity | 5 | Expired |
| US7308205B2 | Optical transmission apparatus | Electricity | 4 | Expired |
| US7039274B2 | Light signal transmitting device and signal processing device | Physics | 4 | Expired |
| US7146065B2 | Optical wiring board, optical bus system, and method of manufacturing optical wiring board | Physics | 4 | Expired |
| US6172783A | Optical bus and signal processor | Physics | 4 | Expired |
| US7924861B2 | Signal communication apparatus and signal communication system | Physics | 4 | Active |
| US5355047A | Circuit for driving an oscillatory-wave motor | Electricity | 4 | Expired |
| US6878925B2 | Optical wiring circuit, optical wiring circuits layered body and opto-electric wiring apparatus | Physics | 3 | Expired |
| US5955010A | Optical transmission line forming method | Physics | 3 | Expired |
| US7065270B2 | Optical transmission device | Physics | 3 | Expired |
| US7796848B2 | Electronic apparatus | Physics | 3 | Active |
| US7883278B2 | Optical module and optical transmission device | Electricity | 2 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.