Issued Patents 2004
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6831767 | Traveling wave optical modular | Junji Shigeta, Masataka Shirai, Hideo Arimoto | 2004-12-14 |
| 6826212 | Module for optical communications | Masataka Shirai, Junichiro Shimizu | 2004-11-30 |
| 6822271 | Semiconductor photodetector and optical transmitting device | Toshiyuki Mogi, Kazumi Kawamoto, Hitoshi Nakamura, Masato Shishikura, Satoru Kikuchi | 2004-11-23 |
| 6684627 | Method of purifying exhaust gas from internal combustion engine | Tatsuji Mizuno, Masahiko Takeuchi, Kenji Kato, Takaaki Ito, Yoshitsugu Ogura +2 more | 2004-02-03 |