Issued Patents All Time
Showing 26–34 of 34 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5315567 | Optical disk formatting system using index mark detecting circuit | Hiroshi Fuji | 1994-05-24 |
| 5311490 | Access controlling device for use in an optical disk drive | Masaru Nomura, Takeshi Yamaguchi, Kunio Kojima, Shigeo Terashima | 1994-05-10 |
| 5301174 | Optical disk recording and reproducing apparatus | Masaru Nomura, Toshihisa Deguchi, Shigeo Terashima | 1994-04-05 |
| 5200941 | Optical retrieval system for encoding pit angular data and optical recording element thereof | Toshihisa Deguchi, Shigeo Terashima, Hideyoshi Yamaoka | 1993-04-06 |
| 5136574 | Optical card and a recording/reproduction apparatus for the same | Shigeo Terashima | 1992-08-04 |
| 5117415 | Optical card, a card holder and an apparatus for recording, reproducing and erasing information on and from the optical card | Kenji Ohta, Hiroyuki Katayama, Junichiro Nakayama, Kazuhiro Kimura, Shozo Kobayashi | 1992-05-26 |
| 5111031 | Optical card and a recording/reproduction apparatus for the same | Shigeo Terashima | 1992-05-05 |
| 5083301 | Optical card recording and reproducing device | Shigemi Maeda, Kenji Ohta, Shozo Kobayashi | 1992-01-21 |
| 5001732 | Track counter for optical disk | Masaru Nomura, Toshihisa Deguchi, Shigeo Terashima | 1991-03-19 |