Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8394480 | Optical information recording medium and manufacturing method therefor | Yuji Tomizawa, Kazushige Koyama | 2013-03-12 |
| 8018822 | Optical information recording medium | Takeshi Otsu, Fumi Hara, Shinichi Kojo, Atsuo Shimizu | 2011-09-13 |
| 7867595 | Optical information recording medium | Takeshi Otsu, Akimasa Miyata, Isao Matsuda, Fumi Hara, Shingo Kato +1 more | 2011-01-11 |
| 7835257 | Optical information recording medium | Takeshi Otsu, Akimasa Miyata, Yuji Tomizawa | 2010-11-16 |
| 7830778 | Optical information recording medium | Isao Matsuda, Fumi Hara, Takeshi Otsu, Akimasa Miyata | 2010-11-09 |