Issued Patents 2002
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6480960 | 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, Shinichi Tanaka, Kenji Koishi, Mitsuro Moriya | 2002-11-12 |
| 6470452 | 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, Shinichi Tanaka, Kenji Koishi, Mitsuro Moriya | 2002-10-22 |
| 6457128 | 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, Shinichi Tanaka, Kenji Koishi, Mitsuro Moriya | 2002-09-24 |
| 6449366 | 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, Shinichi Tanaka, Kenji Koishi, Mitsuro Moriya | 2002-09-10 |
| 6408285 | Optical disk reading device using both a decipher key and disk identification information for decryption | Yoshino Gotoh, Shinichi Tanaka, Kenji Koishi, Mitsurou Moriya, Yoshinari Takemura | 2002-06-18 |
| 6381588 | Optical disk recordable using both a cipher key and disk identification information for encryption | Yoshiho Gotoh, Shinichi Tanaka, Kenji Koishi, Mitsurou Moriya, Yoshinari Takemura | 2002-04-30 |
| 6343282 | Optical disk reading device using both a decipher key and disk identification information | Yoshiho Gotoh, Shinichi Tanaka, Kenji Koishi, Mitsurou Moriya, Yoshinari Takemura | 2002-01-29 |