Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6404729 | Optical disc | Satoru Fukuoka | 2002-06-11 |
| 5843626 | Method for manufacturing a master disc for optical discs | Minemasa Ohta, Hiroyuki Ohira, Yutaka Murakami | 1998-12-01 |
| 5751690 | Optical disk having pattern displayed thereon and apparatus for manufacturing same | Hiroyuki Ohira, Yutaka Murakami | 1998-05-12 |
| 5748607 | Optical disc having large display patterns and its manufacturing apparatus | Hiroyuki Ohira, Yutaka Murakami | 1998-05-05 |
| 5675570 | Optical disc having indication portion | Hiroyuki Ohira, Yutaka Murakami | 1997-10-07 |
| 4894260 | Electroless plating method and apparatus | Osamu Kumasaka | 1990-01-16 |