Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8599672 | Objective lens, optical pickup device, and optical disc device | Hiroyuki Sakakibara, Taiji Minakawa, Fumihiko Hanzawa, Masashi Abe, Jun Adachi +1 more | 2013-12-03 |
| 8315130 | Objective lens, optical pickup and optical disc apparatus | Kouhei Anju | 2012-11-20 |
| 8228777 | Objective lens, an optical pickup, and optical information recording/reproducing apparatus | Kouhei Anju | 2012-07-24 |
| 8125876 | Objective lens, optical pickup apparatus using the same, optical recording/reproduction apparatus using the same, and method of correcting aberration using the same | Kiyoshi Toyota, Hiroyuki Sakakibara, Toyokazu Takahashi, Kouhei Anju, Kenichi Ogawa | 2012-02-28 |
| 7821905 | Optical pickup device and optical disk device | Masahiro Saito, Kiyoshi Toyota | 2010-10-26 |
| 7715300 | Diffraction element, objective lens unit, optical pickup and optical disc apparatus | Satoshi Kawakita, Kyu Kanno, Jin Sato, Takatoshi Yamada | 2010-05-11 |
| 7463430 | Diffraction element, objective lens unit, optical pickup, optical disc apparatus and design method for diffraction element | Takatoshi Yamada, Satoshi Kawakita, Jin Sato, Kyu Kanno | 2008-12-09 |