Yasuhiro Okamoto
161Patents
16h-index
96Co-inventors
89Inventor score
Filing activity: Sep 17, 1985 → May 31, 2022
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US8409079B2 | Electric bending operation device and medical treatment system including electric bending operation device | Human Necessities | 1,435 | Active |
| US5589723A | Driving apparatus using transducer | Electricity | 95 | Expired |
| US6188161A | Driving apparatus using transducer | Performing Operations; Transporting | 43 | Expired |
| US5786654A | Movable stage utilizing electromechanical transducer | Electricity | 43 | Expired |
| US6111336A | Driving apparatus using transducer | Electricity | 40 | Expired |
| US7859014B2 | Semiconductor device | Electricity | 39 | Expired |
| US7800131B2 | Field effect transistor | Electricity | 34 | Active |
| US8674407B2 | Semiconductor device using a group III nitride-based semiconductor | Electricity | 34 | Active |
| US7973335B2 | Field-effect transistor having group III nitride electrode structure | Electricity | 33 | Expired |
| US5917267A | Linear drive mechanism using electromechanical conversion element | Electricity | 28 | Expired |
| US6512321B2 | Driving apparatus and method of using same | Physics | 22 | Expired |
| US7863648B2 | Field effect transistor | Electricity | 21 | Active |
| US6124936A | Color discrimination system | Physics | 21 | Expired |
| US6528926B2 | Driving apparatus | Electricity | 20 | Expired |
| US5969464A | Drive device using electromechanical transducer and an apparatus employing the drive device | Electricity | 20 | Expired |
| US6114799A | Driving mechanism | Performing Operations; Transporting | 19 | Expired |
| US6094272A | Color discrimination system | Physics | 16 | Expired |
| US8853666B2 | Field effect transistor, and multilayered epitaxial film for use in preparation of field effect transistor | Electricity | 15 | Active |
| US6147434A | Drive device using electromechanical transducer and apparatus equipped with the device | Electricity | 15 | Expired |
| US6555806B2 | Photoelectric sensor having special display features | Physics | 14 | Expired |
| US6104129A | Multilayer electrostrictive element and method of manufacturing same | Electricity | 14 | Expired |
| US7256432B2 | Field-effect transistor | Electricity | 14 | Expired |
| US6727635B2 | Driving device | Electricity | 14 | Expired |
| US6717329B2 | Drive mechanism employing electromechanical transducer and method for controlling the drive mechanism | Electricity | 14 | Expired |
| US9237837B2 | Insertion device with the operation input unit | Physics | 13 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.