Issued Patents 2005
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6856471 | Objective optical element, optical pick-up apparatus, and optical information recording reproducing apparatus | Hidekazu Totsuka, Shinichiro Saito, Kiyono Ikenaka | 2005-02-15 |