Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5978122 | Noise suppression method for wavelength division multiplexing transmission system | Toshio Kawazawa, Koji Goto, Tomohiro Otani, Masando Tanaka | 1999-11-02 |
| 5510930 | Light amplifying apparatus | Kuniaki Motoshima, Tadayoshi Kitayama, Junichiro Yamashita, Eiichi Nakagawa, Shigeyuki Akiba +3 more | 1996-04-23 |
| 4288720 | Method of erasing information in a scan converter storage tube | Takefumi Kato | 1981-09-08 |
| 4231636 | Variable field curvature lens system | — | 1980-11-04 |
| 4198126 | Zoom lens system capable of macrophotography | Mitsuo Yasukuni | 1980-04-15 |