Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10473681 | Measuring apparatus and measuring method | — | 2019-11-12 |
| 9064506 | Writable information recording and reproducing apparatus | Hideaki Okano, Kazuo Watabe, Akihito Ogawa, Takashi Usui, Kazuaki Doi | 2015-06-23 |
| 8614936 | Pickup head, information recording method and reproducing method | Kazuo Watabe, Hideaki Okano, Takashi Usui, Akihito Ogawa, Kazuaki Doi | 2013-12-24 |
| 8582413 | Optical pickup and optical disk apparatus | Kazuo Watabe, Hideaki Okano, Akihito Ogawa, Takashi Usui, Kazuaki Doi | 2013-11-12 |
| 8553508 | Focus servo control device, and information recording/reproducing device using the same | Takashi Usui, Kazuo Watabe, Hideaki Okano, Akihito Ogawa, Kazuaki Doi | 2013-10-08 |