Osamu Katayama
13Patents
4h-index
23Co-inventors
60Inventor score
Filing activity: Sep 19, 1996 → Nov 30, 2023
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6556177B1 | Driver circuit for capacitive display elements | Physics | 31 | Expired |
| US7519459B2 | Driving assistance system | Performing Operations; Transporting | 12 | Active |
| US5856813A | Electroluminescent display device for performing brightness control | Physics | 12 | Expired |
| US6836564B2 | Image data compressing method and apparatus which compress image data separately by modifying color | Physics | 9 | Expired |
| US6260051A | Recording medium and character string collating apparatus for full-text character data | Physics | 3 | Expired |
| US6191967A | Voltage supply device having self-testing circuit | Physics | 3 | Expired |
| US6879329B2 | Image processing apparatus having processing operation by coordinate calculation | Physics | 3 | Expired |
| US7542589B2 | Road position detection | Physics | 1 | Expired |
| US9013269B2 | Lock release apparatus | Physics | 1 | Active |
| US10995805B2 | Structure of ratchet type one-way clutch | Mechanical Engineering; Lighting; Heating | 0 | Active |
| US12253124B2 | Clutch device with claw member for selectively locking rings | Mechanical Engineering; Lighting; Heating | 0 | Active |
| US11512744B2 | Clutch apparatus | Mechanical Engineering; Lighting; Heating | 0 | Active |
| US12222011B2 | Clutch device | Mechanical Engineering; Lighting; Heating | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.