Issued Patents 1989
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4862440 | Optical head with optical beam control using acoustic wave device | Norifumi Miyamoto, Yoshio Sato, Nobuyoshi Tsuboi, Satoshi Shimada, Hiroaki Koyanagi +1 more | 1989-08-29 |
| 4841514 | Optical recording method and apparatus using two fight spots | Nobuyoshi Tsuboi, Atsumi Watanabe, Yoshio Sato, Satoshi Shimada | 1989-06-20 |
| 4837995 | Anchoring device for a tension member of prestressed concrete | Hitoshi Omizono, Yasuo Fukatsu, Saburo Ota, Yoshio Ueda | 1989-06-13 |
| 4831942 | Method of controlling deactivation of denitrating catalyst | Iwao Morimoto | 1989-05-23 |
| 4811328 | Optical recording and reproducing device | Tetsuo Ito, Yoshio Sato, Satoshi Shimada, Norifumi Miyamoto, Nobuyoshi Tsuboi +2 more | 1989-03-07 |
| 4806277 | Decontaminating solid surfaces | Mikio Sakurai, Tsutomu Hayashi, Masayuki Izumi, Thoru Satho, Kazuo Owada | 1989-02-21 |