Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6650667 | Semiconductor laser apparatus, semiconductor laser module, optical transmitter and wavelength division multiplexing communication system | Hideyuki Nasu | 2003-11-18 |
| 5375137 | Semiconductor laser device featuring group III and IV compounds doped with amphoteric impurity to vary electrical resistance according to direction of crystal plane | Yoshiyuki Hirayama, Hitoshi Shimizu | 1994-12-20 |