Katsuya Sakamoto
21Patents
4h-index
16Co-inventors
52Inventor score
Filing activity: Sep 28, 2001 → Feb 18, 2009
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US7206276B2 | Objective lens, optical element, optical pick-up apparatus and optical information recording and/or reproducing apparatus equipped therewith | Physics | 24 | Expired |
| US6807139B2 | Objective lens and optical pickup apparatus | Physics | 11 | Expired |
| US6636365B2 | Optical pickup apparatus and objective lens | Physics | 6 | Expired |
| US7382709B2 | Objective lens, optical element, optical pick-up apparatus and optical information recording and/or reproducing apparatus equipped therewith | Physics | 5 | Active |
| US7333416B2 | Optical pickup apparatus for recording or reproducing information for an optical information recording medium and objective lens for optical pickup apparatus | Physics | 4 | Expired |
| US7102980B2 | Optical pickup apparatus and objective lens | Physics | 4 | Expired |
| US7872959B2 | Objective lens, optical element, optical pick-up apparatus and optical information recording and/or reproducing apparatus equipped therewith | Physics | 3 | Active |
| US8240119B2 | High-strength cable | Emerging Cross-Sectional Technologies | 3 | Active |
| US6856471B2 | Objective optical element, optical pick-up apparatus, and optical information recording reproducing apparatus | Physics | 3 | Expired |
| US7483358B2 | Objective lens, optical element, optical pick-up apparatus and optical information recording and/or reproducing apparatus equipped therewith | Physics | 3 | Active |
| US7075880B2 | Optical pick-up device and objective lens used therein | Physics | 3 | Expired |
| US7187641B2 | Objective lens and optical pick-up apparatus | Physics | 2 | Expired |
| US7158467B2 | Optical pick-up apparatus and objective lens for the optical pick-up apparatus | Physics | 1 | Expired |
| US7126902B2 | Objective lens, optical pickup device and method for producing optical element for optical pickup device | Physics | 1 | Expired |
| US7639589B2 | Optical pickup apparatus for recording or reproducing information for an optical information recording medium and objective lens for optical pickup apparatus | Physics | 1 | Active |
| US7463568B2 | Objective optical element and optical pickup apparatus | Physics | 1 | Active |
| US7558180B2 | Light source apparatus provided with beam shaping element and optical pick-up apparatus having the same | Physics | 0 | Active |
| US7697392B2 | Optical pickup apparatus and optical information recording and/or reproducing apparatus | Physics | 0 | Active |
| US7671312B2 | Optical pickup system, optical system, and optical information recording medium | Physics | 0 | Active |
| US6710939B2 | Objective lens for optical pick-up device and optical pick-up device | Physics | 0 | Expired |
| US7656774B2 | Objective lens, optical head, and optical pickup apparatus | Physics | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.