Issued Patents 2005
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6974066 | Built-in equipment type stapler | — | 2005-12-13 |
| 6894959 | Method and apparatus for exposing optical disk master | Shuji Sato, Morio Tomiyama, Masahiko Tsukuda, Eiichi Ito | 2005-05-17 |
| 6882605 | FOCUSING METHOD, METHOD OF DETECTING FOCAL POINT DEVIATION, METHOD OF FORMING MASTER OF DATA STORAGE MEDIUM, FOCUSING CONTROL UNIT, UNIT FOR DETECTING FOCAL POINT DEVIATION, AND UNIT FOR FORMING MASTER OF DATA STORAGE MEDIUM | — | 2005-04-19 |
| 6842420 | Optical disc having plural grooves of different depths | Masahiko Tsukuda, Shuji Sato | 2005-01-11 |