Issued Patents 2005
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6972912 | Optical device, optical system, method of production of same, and mold for production of same | Masahiro Yamada, Akira Kouchiyama | 2005-12-06 |
| 6966707 | Optical pickup | Masahiro Yamada | 2005-11-22 |
| 6896419 | Optical pickup | Masahiro Yamada | 2005-05-24 |
| 6898027 | Optical element and manufacturing method for same | Masahiro Yamada, Takahiro Miura, Takakiyo Kanazawa, Sunao Aoki | 2005-05-24 |