Issued Patents 2005
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6894959 | Method and apparatus for exposing optical disk master | Shuji Sato, Shinya Abe, Morio Tomiyama, Eiichi Ito | 2005-05-17 |
| 6842420 | Optical disc having plural grooves of different depths | Shinya Abe, Shuji Sato | 2005-01-11 |