Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7917043 | Optical receiver applicable to multiple transmission speed | Keiji Tanaka | 2011-03-29 |
| 7668469 | Optical receiver applicable to multiple transmission speed | Keiji Tanaka | 2010-02-23 |
| 6567441 | Source follower circuit, laser driving apparatus, semiconductor laser apparatus, current-voltage convertion circuit, and light receiving circuit | Eiji Tsumura, Sosaku Sawada, Hiroshi Hara | 2003-05-20 |