Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7903511 | Optical information reproducing method, optical information reproducing device, and optical information recording medium for performing reproduction of information by using laser beams | Kazuhiko Aoki | 2011-03-08 |
| 7489620 | Optical information recording and reproducing medium | Mitsuya Okada, Toshiaki Iwanaga, Hideki Tanabe, Masashi Kubota, Masaki Nakano +1 more | 2009-02-10 |
| 7336576 | Optical disk medium and optical disk recording/reproducing apparatus utilizing tilt detection areas having special marks | Yutaka Yamanaka, Ryuichi Katayama, Masatsugu Ogawa, Daisuke Eto, Chosaku Noda +2 more | 2008-02-26 |