Kazuo Yoshida
104Patents
20h-index
177Co-inventors
93Inventor score
Filing activity: Mar 18, 1977 → Apr 15, 2020
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5534073A | Semiconductor producing apparatus comprising wafer vacuum chucking device | Emerging Cross-Sectional Technologies | 101 | Expired |
| US5761058A | Power converter apparatus for a discharge lamp | Electricity | 96 | Expired |
| US4169911A | Porous carbon fiber material with a thin metal film covering each fiber | Emerging Cross-Sectional Technologies | 62 | Expired |
| US6910333B2 | Rankine cycle device of internal combustion engine | Emerging Cross-Sectional Technologies | 50 | Expired |
| US5608614A | Power converter | Emerging Cross-Sectional Technologies | 45 | Expired |
| US5610807A | Power converting system with a plurality of charging capacitors | Electricity | 43 | Expired |
| US5434479A | Full-bridge inverter for discharge lamp lighting device with varied transistor zero voltage period | Emerging Cross-Sectional Technologies | 38 | Expired |
| US4772664A | Thermoplastic resin composition | Emerging Cross-Sectional Technologies | 38 | Expired |
| USD340232S | Image scanner | General | 32 | Expired |
| US5252132A | Apparatus for producing semiconductor film | Chemistry; Metallurgy | 30 | Expired |
| US4800850A | Hydraulic circuit for a valve operating mechanism for an internal combustion engine | Mechanical Engineering; Lighting; Heating | 29 | Expired |
| US4772003A | Apparatus for stacking signatures or the like | Emerging Cross-Sectional Technologies | 29 | Expired |
| US5920155A | Electronic ballast for discharge lamps | Emerging Cross-Sectional Technologies | 29 | Expired |
| US5255436A | Knife and sheath assembly | Performing Operations; Transporting | 27 | Expired |
| US4172549A | Spherical paper package | Performing Operations; Transporting | 26 | Expired |
| US4829948A | Valve operating device for internal combustion engine | Mechanical Engineering; Lighting; Heating | 23 | Expired |
| US7183190B2 | Semiconductor device and fabrication method therefor | Electricity | 22 | Expired |
| US4417671A | Automatic vending machine with ice preparation | Physics | 22 | Expired |
| US5976260A | Semiconductor producing apparatus, and wafer vacuum chucking device, gas cleaning method and nitride film forming method in semiconductor producing apparatus | Emerging Cross-Sectional Technologies | 21 | Expired |
| US4807576A | Hydraulic lash adjuster for use in valve operating mechanism | Mechanical Engineering; Lighting; Heating | 21 | Expired |
| US5604337A | Loudspeaker arrangement in television receiver cabinet | Electricity | 20 | Expired |
| US5501240A | Cleaning method and cleaning apparatus | Performing Operations; Transporting | 18 | Expired |
| USD308219S | Desktop page printer | General | 18 | Expired |
| US6266123A | Liquid crystal display device and manufacturing method thereof | Physics | 17 | Expired |
| US6257267A | Safety valve element for capacitor and capacitor case lid with safety valves | Emerging Cross-Sectional Technologies | 16 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.