Issued Patents 2003
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6661768 | Optical disk, and method and apparatus for reproducing information recorded in optical disk | Takashi Yumiba, Teruyuki Takizawa, Mitsuaki Oshima, Akihiko Nishioka, Koichi Morioka | 2003-12-09 |
| 6618347 | OPTICAL DISK, AN OPTICAL DISK BARCODE FORMING METHOD, AN OPTICAL DISK REPRODUCTION APPARATUS, A MARKING FORMING APPARATUS, A METHOD OF FORMING A LASER MARKING ON AN OPTICAL DISK, AND A METHOD OF MANUFACTURING AN OPTICAL DISK | Yoshiho Gotoh, Mitsuaki Oshima, Shinichi Tanaka, Kenji Koishi | 2003-09-09 |
| 6600706 | OPTICAL DISK, AN OPTICAL DISK BARCODE FORMING METHOD, AN OPTICAL DISK REPRODUCTION APPARATUS, A MARKING FORMING APPARATUS, A METHOD OF FORMING A LASER MARKING ON AN OPTICAL DISK, AND A METHOD OF MANUFACTURING AN OPTICAL DISK | Yoshiho Gotoh, Mitsuaki Oshima, Shinichi Tanaka, Kenji Koishi | 2003-07-29 |
| 6552969 | OPTICAL DISK, AN OPTICAL DISK BARCODE FORMING METHOD, AN OPTICAL DISK REPRODUCTION APPARATUS, A MARKING FORMING APPARATUS, A METHOD OF FORMING A LASER MARKING ON AN OPTICAL DISK, AND A METHOD OF MANUFACTURING AN OPTICAL DISK | Yoshiho Gotoh, Mitsuaki Oshima, Shinichi Tanaka, Kenji Koishi | 2003-04-22 |