Issued Patents 2002
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6440516 | Optical disc | Takeshi Yamasaki, Tomomi Yukumoto, Toshiyuki Kashiwagi | 2002-08-27 |
| 6349086 | Optical disc and method for manufacturing same | Masato Nishida, Tetsuhiro Sakamoto, Toshiyuki Kashiwagi | 2002-02-19 |