Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7859982 | Optical information recording medium and mold apparatus for manufacturing the same | Isao Matsuda, Toru Fujii, Fumi Hara | 2010-12-28 |
| 6990049 | Optical information recording medium, method for recording/reproducing the same, and optical pickup | Atsuo Shimizu, Ryuichi Sunagawa, Keiichi Ida, Mitsuo Sekiguchi, Isao Matsuda | 2006-01-24 |
| 6874156 | Optical information recording medium | Atsuo Shimizu, Ryuichi Sunagawa, Keiichi Ida, Mitsuo Sekiguchi, Isao Matsuda | 2005-03-29 |
| 6792613 | Optical information recording medium | Atsuo Shimizu, Ryuichi Sunagawa, Keiichi Ida, Mitsuo Sekiguchi, Isao Matsuda | 2004-09-14 |
| 6507547 | Medium and method for recording optical information | Takanori Yoshizawa, Kazuyuki Shibuya, Emiko Hamada | 2003-01-14 |
| 6287662 | Optical data recording medium | Takanobu Matsumoto, Yuaki Shin, Emiko Hamada | 2001-09-11 |
| 6218072 | Optical information recording medium | Kunihiro Otaguro, Mitsue Sakaino, Satoshi Nagaya, Toru Fujii | 2001-04-17 |
| 6168844 | Optical information recording medium | Takanori Yoshizawa, Emiko Hamada | 2001-01-02 |