Takahiro Nakamura
136Patents
15h-index
291Co-inventors
89Inventor score
Filing activity: May 21, 1976 → May 18, 2023
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US7043852B2 | Measuring instrument | Physics | 1,364 | Expired |
| US7557703B2 | Position management system and position management program | Physics | 114 | Active |
| US4660980A | Apparatus for measuring thickness of object transparent to light utilizing interferometric method | Physics | 96 | Expired |
| US4807981A | Spatial frequency filter | Physics | 69 | Expired |
| US6234572A | Seat for vehicles | Performing Operations; Transporting | 43 | Expired |
| US7518458B2 | Oscillator and data processing equipment using the same and voltage control oscillator and data processing equipment using voltage control oscillator | Electricity | 36 | Active |
| US7839229B2 | Voltage-controlled oscillator and communication device using the same | Electricity | 32 | Active |
| US7341297B2 | Automotive storage apparatus | Emerging Cross-Sectional Technologies | 31 | Active |
| US4900940A | Optical system for measuring a surface profile of an object using a converged, inclined light beam and movable converging lens | Physics | 29 | Expired |
| US8231908B2 | Sheet-like composition | Human Necessities | 28 | Active |
| US5479299A | Method of transmitting digital video and audio signals between bit rate reduction encoded signal recording and reproducing systems | Electricity | 23 | Expired |
| US7325333B2 | Heat pump device and drying machine | Mechanical Engineering; Lighting; Heating | 21 | Expired |
| US6333844A | Solid electrolytic capacitor | Electricity | 20 | Expired |
| US5790580A | Semiconductor optical integrated device | Electricity | 18 | Expired |
| US5774742A | Peripheral device using two microprocessors and two buses for automatically updating program after judging that update data is stored in a portable recording medium | Physics | 16 | Expired |
| US5959796A | Method of transmitting digital video and audio signals between bit rate reduction encoded signal recording and reproducing systems | Electricity | 15 | Expired |
| US7177612B2 | Frequency generator and communication system using the same | Electricity | 12 | Expired |
| US5337084A | Automatic focusing device utilizing a trend of variation and degree of reliability of a focusing evaluation value signal to improve image focusing | Physics | 11 | Expired |
| US6460835B1 | Wheel suspension system and spring therefor | Performing Operations; Transporting | 11 | Expired |
| US5621578A | Method of transmitting digital video and audio signals between bit rate reduction encoded signal recording and reproducing systems | Electricity | 10 | Expired |
| US5382543A | Semiconductor device manufacturing method capable of correctly forming active regions | Emerging Cross-Sectional Technologies | 9 | Expired |
| US6340996B1 | &ggr; Correction system and method utilizing graph approximation | Physics | 8 | Expired |
| US8841975B2 | Digitally controlled oscillator device and high frequency signal processing device | Electricity | 8 | Active |
| US6938356B2 | Drying machine | Mechanical Engineering; Lighting; Heating | 8 | Expired |
| US7642618B2 | Semiconductor devices with inductors | Electricity | 8 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.