Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5177717 | Optical memory medium and its information recording and erasing method and apparatus | Yoshio Sato, Satoshi Shimada, Hiroshi Sasaki, Nobuyoshi Tsuboi, Hideki Nihei +3 more | 1993-01-05 |
| 4841514 | Optical recording method and apparatus using two fight spots | Nobuyoshi Tsuboi, Yoshio Sato, Satoshi Shimada, Hiroshi Sasaki | 1989-06-20 |
| 4764913 | Signal processing apparatus for disc memory devices | Hiroshi Sasaki, Tomio Chiba, Mitsuyasu Kido, Yoshio Sato | 1988-08-16 |
| 4718053 | Optical information apparatus and method of recording and erasing information | Yoshio Sato, Satoshai Shimada, Hiroshi Sasaki, Norifumi Miyamoto, Nobuyoshi Tsuboi +4 more | 1988-01-05 |
| 4622922 | Combustion control method | Hisanori Miyagaki, Toshihiko Higashi, Atsushi Yokogawa, Yoshihiro Shimada, Nobuo Kurihara +3 more | 1986-11-18 |
| 4620491 | Method and apparatus for supervising combustion state | Mitsuyo Nishikawa, Nobuo Kurihara, Yoshio Sato, Toshihiko Higashi, Hisanori Miyagaki +2 more | 1986-11-04 |
| 4562507 | Protective relay | Hiroyuki Kudo, Hiroshi Sasaki | 1985-12-31 |
| 4223236 | Gate controlling apparatus for a thyristor valve | Ryuji Iyotani | 1980-09-16 |
| 4210956 | Method and system of controlling high voltage direct current power transmission plants | — | 1980-07-01 |