Kun-ho Cho
112Patents
14h-index
75Co-inventors
89Inventor score
Filing activity: May 1, 1996 → Jul 12, 2017
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5665957A | Lens device comprising light blocking means and an optical pickup apparatus using the lens device | Emerging Cross-Sectional Technologies | 72 | Expired |
| US7088664B2 | Reflection type compound prism and optical pickup apparatus employing the same | Physics | 45 | Expired |
| US6222812A | Optical pickup using an optical phase plate | Physics | 36 | Expired |
| US7097308B2 | Highly efficient projection system | Electricity | 35 | Expired |
| US5777973A | Reproducing and recording optical pickup compatible with discs having different thicknesses | Physics | 27 | Expired |
| US5933401A | Optical pickup having plural optical sources and plural optical detectors | Physics | 26 | Expired |
| US6337841B1 | Compatible optical pickup | Physics | 25 | Expired |
| US6091691A | Optical pickup having an objective lens compatible with a plurality of optical disk formats | Physics | 20 | Expired |
| US6824270B2 | Single-panel color image display apparatus and scrolling method | Electricity | 19 | Expired |
| US6275461A | Optical pickup using an optical phase plate | Physics | 17 | Expired |
| US5822135A | Lens device including a light controlling mechanism and an optical pickup apparatus using a lens device | Emerging Cross-Sectional Technologies | 16 | Expired |
| US7327410B2 | High resolution 3-D image display with liquid crystal shutter array | Electricity | 15 | Expired |
| US6547398B2 | Projection-type image display apparatus and method | Electricity | 15 | Expired |
| US8979294B2 | Curved display device | Physics | 14 | Active |
| US5907530A | Optical pickup device | Physics | 13 | Expired |
| US6971748B2 | High-resolution display including pixel moving optical system | Physics | 12 | Expired |
| US7439938B2 | Multi-display apparatus having an optical path changing device | Physics | 12 | Expired |
| US8358387B2 | Liquid crystal display and LED module thereof | Physics | 11 | Active |
| US7119964B2 | Color illuminating system and projection type image display apparatus using the same | Electricity | 10 | Expired |
| US6449237B1 | Optical recording and pickup head for digital versatile disc compatible with read-writable compact disc by adopting flat plate lens having staircase type diffraction grating structure | Physics | 9 | Expired |
| US7287858B2 | Color separating unit and projection type image display apparatus employing the same | Electricity | 9 | Expired |
| US5802037A | Optical detector with two detecting regions for reproducing and recording information on two kinds of disks having different thicknesses | Physics | 9 | Expired |
| US6359850B1 | Optical pickup having catadioptric objective lens | Physics | 8 | Expired |
| US6921171B2 | Color scrolling projection system | Electricity | 8 | Expired |
| US6791933B1 | Optical pickup using an optical phase plate | Physics | 7 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.