Yoshiki Fujioka
49Patents
14h-index
28Co-inventors
77Inventor score
Filing activity: Nov 11, 1977 → Oct 31, 1994
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4434464A | Memory protection system for effecting alteration of protection information without intervention of control program | Physics | 190 | Expired |
| US4812975A | Emulation method | Physics | 67 | Expired |
| US4364005A | Brushless tachometer generator | Emerging Cross-Sectional Technologies | 27 | Expired |
| US4757248A | Induction motor torque control system | Electricity | 27 | Expired |
| US4651266A | High-frequency noise absorbing circuit | Electricity | 26 | Expired |
| US4386305A | Drive control system for motors | Physics | 24 | Expired |
| US4641069A | Plural motor changeover control system | Physics | 24 | Expired |
| US4345192A | Control system for stopping spindle at predetermined rotational position | Physics | 23 | Expired |
| US4330832A | Cutter feed rate control system | Performing Operations; Transporting | 21 | Expired |
| US4353018A | Control system for synchronized operation of machine tool motors | Emerging Cross-Sectional Technologies | 19 | Expired |
| US4800327A | Three-phase induction motor control method | Electricity | 16 | Expired |
| US4581569A | AC motor control apparatus | Electricity | 15 | Expired |
| US4908734A | Housing for motor control unit | Electricity | 15 | Expired |
| US4672287A | Induction motor digital control system | Electricity | 15 | Expired |
| US4398138A | Spindle orientation control method and apparatus | Physics | 14 | Expired |
| US4379987A | Spindle rotation control system | Emerging Cross-Sectional Technologies | 14 | Expired |
| US4268782A | Control system for a DC motor | Emerging Cross-Sectional Technologies | 14 | Expired |
| US4928052A | Power supply regenerating circuit | Electricity | 13 | Expired |
| US4347470A | Spindle orientation control apparatus | Physics | 13 | Expired |
| US4207504A | Spindle control system | Physics | 13 | Expired |
| US4300079A | DC Motor control system | Emerging Cross-Sectional Technologies | 13 | Expired |
| US4284932A | System for driving DC motor | Emerging Cross-Sectional Technologies | 13 | Expired |
| US4268781A | DC Motor drive system | Emerging Cross-Sectional Technologies | 12 | Expired |
| US4359676A | Control system for stopping spindle at predetermined rotational position | Emerging Cross-Sectional Technologies | 12 | Expired |
| US4403179A | Control system for stopping spindle at predetermined rotational position | Physics | 10 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.