Ryo Hasegawa
117Patents
8h-index
111Co-inventors
83Inventor score
Filing activity: Jul 25, 1997 → Apr 8, 2024
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6340993B1 | Automatic clock phase adjusting device and picture display employing the same | Electricity | 23 | Expired |
| US7369183B2 | Image display apparatus | Electricity | 19 | Active |
| US7227559B2 | Image displaying method, image displaying device, and contrast-adjusting circuit for use therewith | Physics | 18 | Expired |
| US7337766B2 | Gas-mixture-ignition-time estimation apparatus for internal combustion engine, and control apparatus for internal combustion engine | Emerging Cross-Sectional Technologies | 18 | Expired |
| US7436415B2 | Display system and display panel and signal processing apparatus for use with display system | Electricity | 16 | Expired |
| USD912993S1 | Cleaning brush | General | 10 | Active |
| US10088197B2 | Water heating apparatus and water heating system | Mechanical Engineering; Lighting; Heating | 9 | Active |
| US6151079A | Image display apparatus having a circuit for magnifying and processing a picture image in accordance with the type of image signal | Physics | 9 | Expired |
| US7265795B2 | Video signal processing circuit, video display apparatus, and video display method | Electricity | 8 | Expired |
| US7701475B2 | Contrast adjusting circuitry and video display apparatus using the same | Electricity | 8 | Active |
| US7719551B2 | Image displaying method, image displaying device, and contrast-adjusting circuit for use therewith | Physics | 7 | Active |
| US7916158B2 | Image display apparatus, image signal processing circuit used therein, and method of controlling color saturation of image signal | Physics | 6 | Active |
| US6982704B2 | Contrast adjusting circuitry and video display apparatus using same | Electricity | 6 | Expired |
| US8424506B2 | Direct-injection type engine | Emerging Cross-Sectional Technologies | 6 | Active |
| US5953075A | Video signal processing apparatus with means for magnifying and processing a picture image correspondingly to video signals | Physics | 5 | Expired |
| US7227543B2 | Contrast adjusting circuitry and video display apparatus using same | Electricity | 4 | Expired |
| US7333081B2 | Image display apparatus, display unit driver and image display method for the same | Physics | 4 | Expired |
| US6879112B2 | Image display device and method of displaying images with static image detection | Physics | 4 | Expired |
| US11616927B2 | Imaging element, imaging apparatus, operation method of imaging element, and program | Electricity | 3 | Active |
| US9658561B2 | Image forming device and method for correcting scanning position of luminous flux | Physics | 3 | Active |
| US7898557B2 | Image displaying method, image displaying device, and contrast-adjusting circuit for use therewith | Physics | 3 | Active |
| US7609282B2 | Image display method and apparatus | Physics | 3 | Active |
| US7151535B2 | Contrast adjusting circuitry and video display apparatus using same | Electricity | 3 | Expired |
| US7907134B2 | Contrast adjusting circuitry and video display apparatus using same | Electricity | 3 | Active |
| US7876301B2 | Image displaying method, image displaying device, and contrast-adjusting circuit for use therewith | Physics | 3 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.