Issued Patents 1989
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4872152 | Light spot position control system and method by sampled servo | Toshiaki Tsuyoshi, Masatoshi Ohtake, Seiji Yonezawa | 1989-10-03 |
| 4866692 | Method and apparatus for information recording and reproduction of a pit-shape-forming optical recording type | Atsushi Saito, Takeshi Maeda, Hisataka Sugiyama | 1989-09-12 |
| 4847822 | Optical information recording and reproducing apparatus with tracking control by sampling | Seiji Yonezawa, Toshiaki Tsuyoshi, Masatoshi Ohtake | 1989-07-11 |
| 4835759 | Method and apparatus for compensating variation of read data in an optical data storage | Atsushi Saito, Takeshi Maeda, Hisataka Sugiyama, Kazuo Shigematsu | 1989-05-30 |
| 4817066 | Transmitter/receiver for ultrasonic diagnostic system | Ryuichi Shinomura, Takeaki Okabe | 1989-03-28 |