Ryuichi Yoshida
61Patents
12h-index
74Co-inventors
87Inventor score
Filing activity: Dec 26, 1984 → Apr 6, 2020
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| 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 |
| US6512321B2 | Driving apparatus and method of using same | Physics | 22 | Expired |
| US5969464A | Drive device using electromechanical transducer and an apparatus employing the drive device | Electricity | 20 | Expired |
| US6528926B2 | Driving apparatus | Electricity | 20 | Expired |
| US6114799A | Driving mechanism | Performing Operations; Transporting | 19 | Expired |
| US6147434A | Drive device using electromechanical transducer and apparatus equipped with the device | Electricity | 15 | Expired |
| US6727635B2 | Driving device | Electricity | 14 | Expired |
| US6717329B2 | Drive mechanism employing electromechanical transducer and method for controlling the drive mechanism | Electricity | 14 | Expired |
| US6803699B2 | Drive mechanism employing electromechanical transducer and drive method therefor | Electricity | 13 | Expired |
| US8001814B2 | Steering lock apparatus | Emerging Cross-Sectional Technologies | 12 | Active |
| US5847488A | Apparatus having drive device using electromechanical transducer | Emerging Cross-Sectional Technologies | 11 | Expired |
| US6331747A | Surface acoustic wave motor and apparatus having the same | Electricity | 10 | Expired |
| US7315164B2 | Drive unit provided with position detecting device | Physics | 9 | Expired |
| US6218764A | Actuator using electromechanical transducer and drive pulse generator suitable thereof | Electricity | 9 | Expired |
| US6051909A | Drive device using electromechanical transducer | Electricity | 9 | Expired |
| US5096013A | Reduced-noise propulsion system of air-cushion vehicle | Performing Operations; Transporting | 9 | Expired |
| US8033148B2 | Electric steering lock apparatus | Emerging Cross-Sectional Technologies | 6 | Active |
| US6815871B2 | Drive mechanism and drive method employing circuit for generating saw-tooth waveform voltage | Electricity | 5 | Expired |
| US9721408B2 | Control apparatus for vehicle opening/closing body | Physics | 5 | Active |
| US6211602A | Actuator using electromechanical transducer capable of being used in high temperature and high humidity environment and apparatus having the same | Electricity | 5 | Expired |
| US5994819A | Driving apparatus using transducer | Electricity | 5 | Expired |
| US6545389B1 | Driving control apparatus and driving control method | Electricity | 5 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.