Koichi Tada
17Patents
6h-index
23Co-inventors
62Inventor score
Filing activity: Jun 24, 1991 → Feb 19, 2002
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5238574A | Method and apparatus having reverse osmosis membrane for concentrating solution | Emerging Cross-Sectional Technologies | 77 | Expired |
| US5917791A | Apparatus for discriminating optical recording media of different thicknesses from each other and reproducing information therefrom | Physics | 44 | Expired |
| US6370093B1 | Optical disc device | Physics | 27 | Expired |
| US6201777A | Apparatus for discriminating optical recording media of different thicknesses from each other and reproducing information therefrom | Physics | 23 | Expired |
| US6529455B1 | Disk apparatus with enhanced focal positioning | Physics | 9 | Expired |
| US6025866A | Superresolution optical pickup apparatus | Physics | 6 | Expired |
| US6480444B2 | Optical disk device | Physics | 5 | Expired |
| US6160783A | Optical pick-up device | Physics | 5 | Expired |
| US6891787B1 | Apparatus for recording/reproducing signal on/from optical disk | Physics | 4 | Expired |
| US5175861A | Lock processing system | Physics | 4 | Expired |
| US6522605B1 | Disk apparatus for focusing and adjusting a laser beam | Physics | 3 | Expired |
| US6975569B2 | Optical disk apparatus capable of generating clock accurately | Physics | 3 | Expired |
| US7242651B2 | Disk reproduction device | Physics | 3 | Expired |
| US6992956B2 | Disk reproducing apparatus for precisely determining a value of an address signal reproduced from the disk | Physics | 2 | Expired |
| US6459662B1 | Optical disk device | Physics | 0 | Expired |
| US6477122B2 | Optical disk device | Physics | 0 | Expired |
| US6466527B1 | Optical disk device | Physics | 0 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.