Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5484324 | Stamper for injection molding | Motohiro Kawasaki, Kazushi Takahashi | 1996-01-16 |
| 5104501 | Electrolytic cleaning method and electrolytic cleaning solution for stamper | — | 1992-04-14 |
| 5024744 | Stamper cleaning apparatus | — | 1991-06-18 |
| 4627809 | Metal mold and stamper for injection molding of a plastic disc for a high-density information recording carrier | Yoshio Onizawa | 1986-12-09 |
| 4539079 | Method and apparatus for electroforming a stamper for producing a high-density information recording carrier | — | 1985-09-03 |