Ko Ishii
15Patents
6h-index
20Co-inventors
66Inventor score
Filing activity: Dec 22, 1975 → Oct 25, 2007
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6480456B1 | Optical pickup apparatus for reading different types of recording media at different reading wavelengths | Physics | 15 | Expired |
| US4037020A | Adhesive comprising post-chlorinated polyethylene and polyvinyl chloride | Emerging Cross-Sectional Technologies | 14 | Expired |
| US4029850A | Adhesive comprising post-chlorinated polyethylene and polyvinyl chloride | Emerging Cross-Sectional Technologies | 14 | Expired |
| US4089726A | Adhesive comprising post-chlorinated polyethylene and polyvinyl chloride | Performing Operations; Transporting | 11 | Expired |
| US6452880B1 | Optical pickup apparatus | Physics | 10 | Expired |
| US6429981B2 | Optical pickup apparatus | Physics | 6 | Expired |
| US6798727B2 | Optical pickup apparatus | Physics | 4 | Expired |
| US6781947B2 | Optical pickup apparatus | Physics | 2 | Expired |
| US6980496B2 | Information recording/reproducing apparatus | Physics | 1 | Expired |
| US7680007B2 | Optical state recognizer, information processor, and optical state recognizing method | Physics | 1 | Active |
| US7170831B2 | Optical pickup astigmatism measuring method, optical pickup astigmatism adjusting method, and optical pickup astigmatism measuring system | Physics | 1 | Expired |
| US8463575B2 | Gear meshing angle detection method and device | Performing Operations; Transporting | 1 | Active |
| US7764586B2 | Aberration correcting apparatus, optical pickup, and aberration correcting method | Physics | 0 | Active |
| US6912234B2 | Optical pickup apparatus and laser diode chip | Physics | 0 | Expired |
| US7064308B2 | Method of and apparatus for adjusting the focus position of an optical pickup | Physics | 0 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.