Issued Patents All Time
Showing 51–52 of 52 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5048745 | Roll stamper for molding substrate used for optical recording medium, process for preparing same, and process for preparing optical recording medium making use of it | Tetsuya Sato, Osamu Kanome, Hiroyuki Sugata | 1991-09-17 |
| 5026510 | Mold for cast molding substrate having preformat with information pits and method of using same | — | 1991-06-25 |