Issued Patents All Time
Showing 26–50 of 64 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6584046 | Method for reproducing information data from magneto-optical recording medium using linear polarized beam | Mitsuaki Oshima, Shinichi Konishi, Shin-ichi Tanaka, Kenji Koishi, Mitsurou Moriya +3 more | 2003-06-24 |
| 6469980 | Optical disk and a recording/reproduction apparatus using multiple address block groups shifted oppositely with multiple address blocks and non-pit data | Shigeru Furumiya, Takashi Ishida, Yoshito Aoki, Shunji Ohara, Yuichi Kamioka +1 more | 2002-10-22 |
| 6456585 | Optical disk and a recording/reproduction apparatus using multiple address block groups shifted oppositely with multiple address blocks having clock synchronization, address number and address ID | Shigeru Furumiya, Takashi Ishida, Yoshito Aoki, Shunji Ohara, Yuichi Kamioka +1 more | 2002-09-24 |
| 6438096 | Optical disk and a recording/reproduction apparatus using multiple address block groups shifted oppositely with multiple address blocks and clock synchronization | Shigeru Furumiya, Takashi Ishida, Yoshito Aoki, Shunji Ohara, Yuichi Kamioka +1 more | 2002-08-20 |
| 6418111 | Optical disk compatible with read-only disk and having read-only and rewritable areas with overlapping formats | Takashi Ishida, Shunji Ohara, Isao Satoh | 2002-07-09 |
| 6408285 | Optical disk reading device using both a decipher key and disk identification information for decryption | Mitsuaki Oshima, Yoshino Gotoh, Shinichi Tanaka, Kenji Koishi, Mitsurou Moriya | 2002-06-18 |
| 6396798 | Optical disc with a rewritable area and a read-only area | Shunji Ohara, Takashi Ishida, Isao Satoh, Kazuhiko Nakane, Masato Nagasawa +1 more | 2002-05-28 |
| 6396778 | Optical disk and a recording/reproduction apparatus thereof | Shigeru Furumiya, Takashi Ishida, Yoshito Aoki, Shunji Ohara, Yuichi Kamioka +1 more | 2002-05-28 |
| 6381588 | Optical disk recordable using both a cipher key and disk identification information for encryption | Mitsuaki Oshima, Yoshiho Gotoh, Shinichi Tanaka, Kenji Koishi, Mitsurou Moriya | 2002-04-30 |
| 6373815 | Optical disc having oscillating lands and grooves | Takashi Ishida, Shin-ichi Tanaka, Akira Mutoh, Shunji Ohara, Isao Satoh | 2002-04-16 |
| 6343282 | Optical disk reading device using both a decipher key and disk identification information | Mitsuaki Oshima, Yoshiho Gotoh, Shinichi Tanaka, Kenji Koishi, Mitsurou Moriya | 2002-01-29 |
| 6317407 | Optical disk having read-only and rewritable areas with overlapping formats | Takashi Ishida, Shunji Ohara, Isao Satoh | 2001-11-13 |
| 6301569 | Optical disk, optical recorder, optical reproducer, cryptocommunication system and program license system | Mitsuaki Oshima, Yoshiro Gotoh, Shinichi Tanaka, Kenji Koishi, Mitsurou Moriya | 2001-10-09 |
| 6266299 | Magneto-optical disk having write-once identification marks and method for recording thereof | Mitsuaki Oshima, Shinichi Konishi, Shin-ichi Tanaka, Kenji Koishi, Mitsurou Moriya +3 more | 2001-07-24 |
| 6172960 | Optical disk and recording/reproducing apparatus using multiple address block groups shifted oppositely with multiple address blocks | Shigeru Furumiya, Takashi Ishida, Yoshito Aoki, Shunji Ohara, Yuichi Kamioka +1 more | 2001-01-09 |
| 6167022 | Optical disc having oscillating land and grooves | Takashi Ishida, Shin-ichi Tanaka, Akira Mutoh, Shunji Ohara, Isao Satoh | 2000-12-26 |
| 6137768 | Optical disc having oscillating lands and grooves | Takashi Ishida, Shin-ichi Tanaka, Akira Mutoh, Shunji Ohara, Isao Satoh | 2000-10-24 |
| 6081785 | Optical disk, optical recorder, optical reproducer, crytocommunication system and program license system | Mitsuaki Oshima, Yoshiho Gotoh, Shinichi Tanaka, Kenji Koishi, Mitsurou Moriya | 2000-06-27 |
| 6078559 | Optical disk having read-only and rewritable areas with overlapping formats | Takashi Ishida, Shunji Ohara, Isao Satoh | 2000-06-20 |
| 5933410 | Optical disc and optical disc driving apparatus | Kazuhiko Nakane, Hiroyuki Ohata, Masato Nagasawa, Kenji Gotoh, Yoshinobu Ishida +3 more | 1999-08-03 |
| 5923640 | Optical disc with a rewritable area and a read-only area | Shunji Ohara, Takashi Ishida, Isao Satoh, Kazuhiko Nakane, Masato Nagasawa +1 more | 1999-07-13 |
| 5850382 | Optical disk having a rewritable area and a read-only area | Kenji Koishi, Shunji Ohara, Takashi Ishida, Isao Satoh, Toyoji Gushima +2 more | 1998-12-15 |
| 5838658 | Optical disc | Kazuhiko Nakane, Hiroyuki Ohata, Masato Nagasawa, Kenji Gotoh, Yoshinobu Ishida +3 more | 1998-11-17 |
| 5815209 | Encoding method, an encoding apparatus, a decoding method and a decoding apparatus for a moving picture | Satoshi Kondo, Ryoji Yamaguchi, Hiroyuki Suzuki | 1998-09-29 |
| 5809007 | Optical disk and optical disk reproduction apparatus | Shunji Ohara, Takashi Ishida, Yoshito Aoki, Shigeru Furumiya, Toyoji Gushima | 1998-09-15 |