Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5540345 | Process of producing diffraction grating | Hiroshi Sugimoto, Ken-ichi Ohtsuka, Yuji Abe, Toshiyuki Ohishi | 1996-07-30 |
| 5300190 | Process of producing diffraction grating | Hiroshi Sugimoto, Ken-ichi Ohtsuka, Yuji Abe, Toshiyuki Ohishi | 1994-04-05 |
| 5036372 | Heterojunction avalanche transistor | Toshiyuki Ohishi, Yuji Abe, Hiroshi Sugimoto, Ken-ichi Ohisuka | 1991-07-30 |
| 5020072 | Semiconductor laser device | Yuji Abe, Hiroshi Sugimoto, Kenichi Ohtsuka, Toshiyuki Oishi | 1991-05-28 |
| 4817110 | Semiconductor laser device | Yasunori Tokuda, Kenzo Fujiwara, Noriaki Tsukada, Keisuke Kojima, Yoshinori Nomura | 1989-03-28 |