Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7855940 | Pickup lens with phase compensator and optical pickup apparatus using the same | Koichiro Wakabayashi, Keiko Hirao, Mitsuhiro Miyauchi, Yutaka Makino, Yasuyuki Sugi | 2010-12-21 |
| 7586815 | Pickup lens with phase compensator and optical pickup apparatus using the same | Koichiro Wakabayashi, Keiko Hirao, Mitsuhiro Miyauchi, Yutaka Makino, Yasuyuki Sugi | 2009-09-08 |