Issued Patents 2004
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6831790 | Optical element, method for producing the same, and optical pickup | Koichiro Kishima | 2004-12-14 |
| 6825995 | Optical device, optical system, method of production of same, and mold for production of same | Masahiro Yamada, Tetsu Watanabe | 2004-11-30 |
| 6773868 | Method for producing recording medium, method for producing stamper of recording medium, apparatus for producing recording medium, and apparatus for producing stamper of recording medium | Koichiro Kishima | 2004-08-10 |
| 6747811 | Optical system, method of producing optical system, and optical pickup | Koichiro Kishima | 2004-06-08 |
| 6724544 | Optical lens and method of producing the same, method of producing optical lens array, focus error signal production method, and optical pickup apparatus | Koichiro Kishima | 2004-04-20 |