Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4837757 | Optical recording/reproducing device | Hiroo Okada, Yoshiaki Ikeda | 1989-06-06 |
| 4520280 | Apparatus for detecting input signal | Shozi Yoshikawa, Hiroshi Kodama, Masaharu Sakamoto, Kiichi Kato, Kunio Yamamiya | 1985-05-28 |
| 4499572 | Method for reading information or defect out of rotating disc | Shozi Yoshikawa, Masaharu Sakamoto, Hiroshi Kodama, Kunio Yamamiya, Kiichi Kato | 1985-02-12 |
| 4464050 | Apparatus for detecting optically defects | Kiichi Kato, Masaharu Sakamoto, Shoji Yoshikawa, Kunio Yamamiya, Hiroshi Kodama | 1984-08-07 |