Kei Takahashi
341Patents
14h-index
206Co-inventors
89Inventor score
Filing activity: Dec 28, 1995 → Feb 28, 2024
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US9614258B2 | Power storage device and power storage system | Emerging Cross-Sectional Technologies | 988 | Active |
| US8421068B2 | Semiconductor device and manufacturing method thereof | Electricity | 100 | Active |
| US8421069B2 | Semiconductor device | Electricity | 60 | Active |
| US8710762B2 | DC/DC converter, power supply circuit, and semiconductor device | Emerging Cross-Sectional Technologies | 33 | Active |
| US8330702B2 | Pulse output circuit, display device, and electronic device | Electricity | 26 | Active |
| US5769068A | Apparatus for supporting a solar collector unit | Emerging Cross-Sectional Technologies | 23 | Expired |
| US7123487B2 | Card interface device | Physics | 23 | Expired |
| US9984624B2 | Semiconductor device, driver IC, and electronic device | Physics | 23 | Active |
| US9520411B2 | Display device and electronic device including the same | Electricity | 22 | Active |
| US9940086B2 | Display device, display unit, and display system | Emerging Cross-Sectional Technologies | 20 | Active |
| US8766608B2 | Voltage regulator circuit and semiconductor device, including transistor using oxide semiconductor | Electricity | 20 | Active |
| US8723173B2 | Semiconductor device, power circuit, and manufacturing method of semiconductor device | Electricity | 19 | Active |
| US9048117B2 | Pulse output circuit, display device, and electronic device | Electricity | 18 | Active |
| US9742356B2 | Semiconductor device outputting reference voltages | Electricity | 15 | Active |
| US7851804B2 | Display device | Electricity | 14 | Active |
| US10198235B2 | Display device, display unit, and display system | Emerging Cross-Sectional Technologies | 13 | Active |
| US5878807A | Fluid channeling unit | Emerging Cross-Sectional Technologies | 12 | Expired |
| USD553579S1 | Programmable logic controller | General | 12 | Expired |
| USD559205S1 | Programmable logic controller | General | 11 | Expired |
| US5887625A | Flat pipe | Mechanical Engineering; Lighting; Heating | 11 | Expired |
| US8519628B2 | Light-emitting device | Physics | 11 | Active |
| US7018227B2 | Card connector device | Emerging Cross-Sectional Technologies | 11 | Expired |
| US8044598B2 | Light-emitting device | Physics | 10 | Active |
| US10332912B2 | Display device and electronic device including the same | Electricity | 10 | Active |
| US9666678B2 | Semiconductor device and manufacturing method thereof | Electricity | 10 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.