Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7643401 | Optical information recording medium and stamper | Yusuke Takahashi, Masashi Suenaga, Hitoshi Watanabe | 2010-01-05 |
| 7193961 | Optical information-recording medium and method for producing the same | Masashi Suenaga, Yusuke Takahashi, Toyoyuki Nunomura | 2007-03-20 |