Ken Yoshida
50Patents
11h-index
106Co-inventors
81Inventor score
Filing activity: Apr 30, 1981 → Mar 23, 2023
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4523635A | Metal hydride heat pump system | Emerging Cross-Sectional Technologies | 63 | Expired |
| US7003238B2 | Intermediate image transfer device for a color image forming apparatus | Physics | 39 | Expired |
| US4457136A | Metal hydride reactor | Emerging Cross-Sectional Technologies | 39 | Expired |
| US10115567B2 | Plasma processing apparatus | Electricity | 36 | Active |
| US4422500A | Metal hydride heat pump | Mechanical Engineering; Lighting; Heating | 28 | Expired |
| US7203433B2 | Apparatus for detecting amount of toner deposit and controlling density of image, method of forming misalignment correction pattern, and apparatus for detecting and correcting misalignment of image | Physics | 27 | Expired |
| US4402915A | Metal hydride reactor | Emerging Cross-Sectional Technologies | 25 | Expired |
| US7280792B2 | Method for evaluating changes in resistance of electric resistance member and image forming apparatus using same | Physics | 22 | Expired |
| US7610004B2 | Apparatus for detecting amount of toner deposit and controlling density of image, method of forming misalignment correction pattern, and apparatus for detecting and correcting misalignment of image | Physics | 17 | Active |
| US4729618A | Integrated optic circuit | Physics | 17 | Expired |
| US9622672B2 | Digitally invertible universal amplifier for recording and processing of bioelectric signals | Electricity | 13 | Active |
| US4409799A | Heat pump device | Mechanical Engineering; Lighting; Heating | 11 | Expired |
| US5493136A | Field effect transistor and method of manufacturing the same | Electricity | 10 | Expired |
| US7542713B2 | Image forming apparatus capable of effectively forming a quality image without causing a vermiculate-like false image | Physics | 10 | Active |
| US7162179B2 | Image forming apparatus | Physics | 10 | Expired |
| US7639976B2 | Image forming apparatus | Physics | 8 | Active |
| US11001162B2 | Vehicle power supply device and method for controlling vehicle power supply device | Emerging Cross-Sectional Technologies | 4 | Active |
| US9532479B2 | Input/output module | Physics | 4 | Active |
| US7813662B2 | Transfer unit and image forming apparatus using the unit | Physics | 3 | Active |
| US9871395B2 | Charging control device | Emerging Cross-Sectional Technologies | 3 | Active |
| US9316954B2 | Image forming apparatus | Physics | 2 | Active |
| US8811834B2 | Image forming apparatus | Physics | 2 | Active |
| US10525834B2 | Vehicle charge control device to correct a state of charge | Emerging Cross-Sectional Technologies | 2 | Active |
| US11196101B2 | Battery discharge controller | Emerging Cross-Sectional Technologies | 2 | Active |
| US9152090B2 | Image forming apparatus that suppresses deterioration in image quality | Physics | 1 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.