Junichi Hasegawa
114Patents
12h-index
139Co-inventors
89Inventor score
Filing activity: Mar 4, 1988 → Aug 9, 2023
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5150673A | Fuel supplying device for marine propulsion engine | Mechanical Engineering; Lighting; Heating | 23 | Expired |
| US6636507B1 | Frame data exchanging method and apparatus | Electricity | 22 | Expired |
| US5355519A | Fading simulation method and fading simulator | Electricity | 21 | Expired |
| US5583539A | Item selection signal input apparatus that reduces the processing load of a host computer | Physics | 21 | Expired |
| US7477976B2 | Automatic optical axis direction adjusting apparatus for vehicles | Performing Operations; Transporting | 19 | Active |
| US9295119B2 | Lighting device and illumination apparatus using the same | Emerging Cross-Sectional Technologies | 19 | Active |
| US5477187A | Feed forward amplifier | Electricity | 15 | Expired |
| US7391960B2 | DV format capable recording and reproduction device and method | Physics | 14 | Active |
| US7366547B2 | Communications apparatus that displays data in a standby screen | Emerging Cross-Sectional Technologies | 13 | Expired |
| US7622869B2 | Discharge lamp ballast and projector | Emerging Cross-Sectional Technologies | 13 | Expired |
| US4917053A | Fuel supplying system for plural-cylinder internal combustion engine | Mechanical Engineering; Lighting; Heating | 13 | Expired |
| US5438962A | Water cooled engine | Emerging Cross-Sectional Technologies | 12 | Expired |
| US7511432B2 | Discharge lamp lighting device, illumination device, and projector | Electricity | 11 | Expired |
| US5515000A | Feed-forward amplifier of a type preventing unwanted waves from being outputted in the initial operation | Electricity | 11 | Expired |
| US5595515A | Outboard motor exhaust system | Emerging Cross-Sectional Technologies | 9 | Expired |
| US7575348B2 | Vehicle headlamp device | Performing Operations; Transporting | 8 | Active |
| US7561765B2 | Optical integrated circuit and optical integrated circuit module | Physics | 8 | Active |
| US7539368B2 | Arrayed waveguide grating | Physics | 8 | Active |
| US7480091B2 | Delay-line demodulator and method of adjusting a phase shift in the demodulator | Physics | 7 | Active |
| US7961991B2 | Delay demodulation devices | Physics | 7 | Active |
| US6769817B2 | Optical fiber module | Physics | 7 | Expired |
| US7860627B2 | Automatic optical axis direction adjusting apparatus for vehicles | Performing Operations; Transporting | 6 | Active |
| US7504782B2 | Discharge lamp lighting apparatus and projector | Electricity | 6 | Expired |
| US6283809A | Outboard motor exhaust system | Mechanical Engineering; Lighting; Heating | 6 | Expired |
| US5548799A | Mobile communication system having a control for limiting the number of carriers based on the level of intermodulation distortion | Electricity | 6 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.