Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8945438 | Lens forming metal mold, lens forming method and pickup device | Akihiro Sugiyama, Hiroshi Kanazawa | 2015-02-03 |
| 8305867 | Lens and optical pick-up | Akira Iwabuchi | 2012-11-06 |