Issued Patents 2002
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6466538 | Optical recording medium having disconnected land and groove forming control portion | Toshiyuki Kashiwagi, Masanobu Yamamoto | 2002-10-15 |
| 6442110 | BEAM IRRADIATION APPARATUS, OPTICAL APPARATUS HAVING BEAM IRRADIATION APPARATUS FOR INFORMATION RECORDING MEDIUM, METHOD FOR MANUFACTURING ORIGINAL DISK FOR INFORMATION RECORDING MEDIUM, AND METHOD FOR MANUFACTURING INFORMATION RECORDING MEDIUM | Masanobu Yamamoto, Toshiyuki Kashiwagi | 2002-08-27 |