Kyohei Fukuda
31Patents
10h-index
40Co-inventors
75Inventor score
Filing activity: May 22, 1978 → May 20, 2022
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4838655A | Projector using guest-host liquid crystal cells for improved color purity | Physics | 73 | Expired |
| US5404175A | Method for projecting image obtained by using liquid crystal panels semiconductor substrate and display apparatus for realizing the same | Electricity | 50 | Expired |
| US5162897A | Projection type stereoscopic image display system | Electricity | 48 | Expired |
| US5295018A | Polarization transforming optics, polarizing beam splitter and liquid crystal display | Physics | 35 | Expired |
| US4948237A | Projection lens system | Physics | 17 | Expired |
| US4620773A | Projection lens for projection television | Electricity | 16 | Expired |
| US4924244A | Lens system for projection type television | Physics | 14 | Expired |
| US4933599A | Projection system with a cathode ray tube and a lens | Physics | 12 | Expired |
| US4810075A | Projection system with a cathode ray tube and a lens | Physics | 12 | Expired |
| US4884879A | Lens system for projection television receivers | Physics | 10 | Expired |
| US4362964A | Color picture tube with a magnetic focusing device | Electricity | 9 | Expired |
| US9059009B2 | Semiconductor device | Electricity | 7 | Active |
| US4310780A | Magnetic focusing structure for three in-line gun type color picture tubes | Electricity | 6 | Expired |
| US5875006A | Method for projecting image obtained by using liquid crystal panels and display apparatus for realizing the same | Electricity | 6 | Expired |
| US9305910B2 | Semiconductor device | Electricity | 5 | Active |
| US4824224A | Lens system for a cathode ray tube projection system | Physics | 4 | Expired |
| US5029993A | Lens system for projection television receivers | Physics | 4 | Expired |
| US4345183A | Color picture tube with magnetic focusing system | Electricity | 4 | Expired |
| US5614962A | Method for projecting image obtained by using liquid crystal panels and display apparatus for realizing the same | Electricity | 4 | Expired |
| US4439710A | Electromagnetic focusing cathode-ray tube | Electricity | 4 | Expired |
| US4460844A | Magnetic focusing, three in-line gun type color picture tube | Electricity | 3 | Expired |
| US4473773A | In-line type electromagnetic focusing cathode-ray tube | Electricity | 3 | Expired |
| US8598688B2 | Semiconductor device | Electricity | 1 | Active |
| US8692350B2 | Semiconductor device and method of manufacturing the same | Electricity | 1 | Active |
| US4201933A | Electron gun structure for a pickup tube | Electricity | 1 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.