Keiichi Maeno
17Patents
10h-index
16Co-inventors
69Inventor score
Filing activity: Jun 15, 1990 → Aug 14, 2020
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5239322A | Display apparatus | Electricity | 64 | Expired |
| US5130826A | Optical system having photoconductive members and optical means for decomposing and composing the polarized lights for a color picture display | Electricity | 53 | Expired |
| US5164854A | Polarization converter for converting unpolarized light to linearly polarized light | Physics | 26 | Expired |
| US5357289A | Projector lens system having three lens groups for image projector | Electricity | 26 | Expired |
| US5122895A | Polarization converter for converting randomly polarized light to linearly polarized light | Physics | 24 | Expired |
| US5294992A | Driving method for photoconductive-type SLM | Physics | 21 | Expired |
| US5191408A | Color imaging system with selectively openable optical shutter | Physics | 20 | Expired |
| US5264951A | Spatial light modulator system | Physics | 20 | Expired |
| US5502490A | Display unit having a light-to-light conversion element | Physics | 19 | Expired |
| US5463468A | Display unit having a light-to-light conversion element | Physics | 12 | Expired |
| US5565882A | Image processing system for display, recording and reproducing image | Electricity | 10 | Expired |
| US5250939A | Drive apparatus for optical element array | Physics | 7 | Expired |
| US5159456A | Photo-to-photo transducer and method of operation using a photo-moldulation member affected by a change distribution in a photoconductive member and a voltage applied across electrodes | Physics | 5 | Expired |
| US5227902A | Spatial light modulator with a photoconductor on each side of a light modulation layer | Physics | 3 | Expired |
| US7131729B2 | Projection display apparatus | Electricity | 3 | Expired |
| US11054733B2 | Light source device | Physics | 0 | Active |
| US5381188A | Light to light modulator with reading light of specified wavelength | Physics | 0 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.