Issued Patents All Time
Showing 26–34 of 34 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6858863 | Semiconductor laser device having a high characteristic temperature | Hitoshi Shimizu, Kouji Kumada | 2005-02-22 |
| 6839369 | Surface emitting semiconductor laser device | Tatsuyuki Shinagawa, Noriyuki Yokouchi | 2005-01-04 |
| 6643315 | Distributed feedback semiconductor laser device and multi-wavelength laser array | Akihiko Kasukawa, Masaki Funabashi | 2003-11-04 |
| 6636543 | Semiconductor device and surface emitting semiconductor laser device | Tatsuyuki Shinagawa, Noriyuki Yokouchi | 2003-10-21 |
| 6430203 | Semiconductor laser device with non-oxidized facet regions | Noriyuki Yokouchi | 2002-08-06 |
| 6281523 | Semiconductor optical waveguide | Kazuaki Nishikata, Akihiko Kasukawa | 2001-08-28 |
| 5854090 | Method of manufacturing wafer bonded semiconductor laser device | Akihiko Kasukawa | 1998-12-29 |
| 5757833 | Semiconductor laser having a transparent light emitting section, and a process of producing the same | Satoshi Arakawa, Takuya Ishikawa, Akihiko Kasukawa, Michio Ohkubo, Takao Ninomiya | 1998-05-26 |
| 5497389 | Semiconductor laser device having an active layer and a resonator having a single reflector or pair of reflectors | Akihiko Kasukawa | 1996-03-05 |