Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7697392 | Optical pickup apparatus and optical information recording and/or reproducing apparatus | Kiyono Ikenaka, Katsuya Sakamoto | 2010-04-13 |
| 7613096 | Converging optical element and optical pickup apparatus | — | 2009-11-03 |
| 7369480 | Optical pickup device and optical element | Kiyono Ikenaka | 2008-05-06 |