Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8873166 | Objective lens for optical pickup device, and optical pickup device | — | 2014-10-28 |
| 8760990 | Objective lens for optical pickup apparatus, optical pickup apparatus, and optical information recording reproducing apparatus | Hideki Tanaka, Kentarou Nakamura | 2014-06-24 |
| 8406111 | Objective lens and optical pickup device | Kentarou Nakamura | 2013-03-26 |
| 8111602 | Objective lens, optical pickup device, and optical disk drive | Kyu Takada, Kentarou Nakamura | 2012-02-07 |
| 7969852 | Optical pickup apparatus | — | 2011-06-28 |
| 7646696 | Objective optical element and optical pickup apparatus | — | 2010-01-12 |