Issued Patents All Time
Showing 26–42 of 42 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6528337 | Process of producing semiconductor layer structure | Satoshi Arakawa, Toshikazu Mukaihara, Nobumitsu Yamanaka | 2003-03-04 |
| 6493369 | Gain-coupling distributed feedback type semiconductor laser device | Masaki Funabashi | 2002-12-10 |
| 6472691 | Distributed feedback semiconductor laser device | Toshikazu Mukaihara, Hitoshi Shimizu, Masaki Funabashi | 2002-10-29 |
| 6396861 | N-type modulation-doped multi quantum well semiconductor laser device | Hitoshi Shimizu, Kouji Kumada | 2002-05-28 |
| 6281523 | Semiconductor optical waveguide | Norihiro Iwai, Kazuaki Nishikata | 2001-08-28 |
| 6278139 | Semiconductor light-emitting diode | Takuya Ishikawa, Satoshi Arakawa, Toshikazu Mukaihara | 2001-08-21 |
| 5953358 | Semiconductor laser device | Takuya Ishikawa | 1999-09-14 |
| 5929462 | Semiconductor optical device having a strained quantum well structure | Michio Ohkubo, Nobumitsu Yamanaka | 1999-07-27 |
| 5914977 | Semiconductor laser having a high-reflectivity reflector on the laser facets thereof, an optical integrated device provided with the semiconductor laser, and a manufacturing method therefor | Toshikazu Mukaihara | 1999-06-22 |
| 5854090 | Method of manufacturing wafer bonded semiconductor laser device | Norihiro Iwai | 1998-12-29 |
| 5757833 | Semiconductor laser having a transparent light emitting section, and a process of producing the same | Satoshi Arakawa, Norihiro Iwai, Takuya Ishikawa, Michio Ohkubo, Takao Ninomiya | 1998-05-26 |
| 5666375 | Semiconductor quantum well laser having a low threshold current density | Noriyuki Yokouchi, Nobumitsu Yamanaka | 1997-09-09 |
| 5497389 | Semiconductor laser device having an active layer and a resonator having a single reflector or pair of reflectors | Norihiro Iwai | 1996-03-05 |
| 5390208 | Strained quantum well type semiconductor laser device | Toshio Kikuta | 1995-02-14 |
| 5363392 | Strained quantum well type semiconductor laser device | Toshio Kikuta | 1994-11-08 |
| 5327445 | Quantum-well type semiconductor laser device | Narihito Matsumoto, Takeshi Namegaya, Hiroshi Okamoto | 1994-07-05 |
| 5325385 | Buried-type semiconductor laser device | Toshio Kikuta | 1994-06-28 |