Issued Patents All Time
Showing 1–25 of 28 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7675954 | Semiconductor laser device | Tomoko Kadowaki, Tohru Takiguchi, Toshio Tanaka | 2010-03-09 |
| 7187701 | Ridge waveguide semiconductor laser | Tohru Takiguchi, Toshio Tanaka, Tomoko Kadowaki, Yoshihiko Hanamaki, Nobuyuki Tomita | 2007-03-06 |
| 6768760 | Ridge-waveguide semiconductor laser device | Tohru Takiguchi, Yoshihiko Hanamaki | 2004-07-27 |
| 6275515 | Semiconductor laser device and method of producing the same | Yutaka Nagai, Motoharu Miyashita, Yasutomo Kajikawa | 2001-08-14 |
| 6018539 | Semiconductor laser and method of fabricating semiconductor laser | Tatsuya Kimura, Motohalu Miyashita | 2000-01-25 |
| 5880485 | Semiconductor device including Gallium nitride layer | Diethard Marx, Zempei Kawazu | 1999-03-09 |
| 5838704 | Pulsation laser having an active region with a thicker central region in a resonator length direction | Motoharu Miyashita, Shoichi Karakida | 1998-11-17 |
| 5835516 | Semiconductor laser device and method of fabricating semiconductor laser device | Motoharu Miyashita, Hirotaka Kizuki, Yasuaki Yoshida, Yasutomo Kajikawa, Shoichi Karakida +1 more | 1998-11-10 |
| 5763287 | Method of fabricating semiconductor optical device | Takushi Itagaki, Tohru Takiguchi, Akira Takemoto | 1998-06-09 |
| 5684823 | Method of fabricating a diffraction grating and a distributed feedback semiconductor laser incorporating the diffraction grating | Katsuhiko Goto | 1997-11-04 |
| 5675601 | Semiconductor laser device | Shoichi Karakida, Motoharu Miyashita | 1997-10-07 |
| 5518955 | Method of fabricating quantum wire | Katsuhiko Goto | 1996-05-21 |
| 5439723 | Substrate for producing semiconductor wafer | Motoharu Miyashita, Norio Hayafuji | 1995-08-08 |
| 5436195 | Method of fabricating an integrated semiconductor light modulator and laser | Tadashi Kimura, Katuhiko Goto, Takushi Itagaki | 1995-07-25 |
| 5311046 | Long wavelength transmitter opto-electronic integrated circuit | — | 1994-05-10 |
| 5279077 | Method for producing semiconductor wafer | Motoharu Miyashita, Norio Hayafuji | 1994-01-18 |
| 5218614 | Semiconductor laser device | — | 1993-06-08 |
| 4998258 | Semiconductor laser device | Kenji Ikeda, Kimio Shigihara | 1991-03-05 |
| 4924474 | Laser device with high oscillation efficiency | Shigenori Yagi, Yasuhito Myoi, Masaki Kuzumoto, Kazuki Kuba, Yoshito Seiwa +1 more | 1990-05-08 |
| 4914668 | Semiconductor laser including a reflection film | Yutaka Nagai, Kenji Ikeda, Yoichiro Ota | 1990-04-03 |
| 4841535 | Semiconductor laser device | Yutaka Nagai, Kenji Ikeda | 1989-06-20 |
| 4833510 | Semiconductor laser array with independently usable laser light emission regions formed in a single active layer | Yutaka Nagai, Kenji Ikeda | 1989-05-23 |
| 4829023 | Method of producing a semiconductor laser | Yutaka Nagai, Tetsuya Yagi, Yoichiro Ota | 1989-05-09 |
| 4734385 | Semiconductor laser element suitable for production by a MO-CVD method | Yutaka Nagai | 1988-03-29 |
| 4733399 | Semiconductor laser device having integral optical output modulator | Yutaka Nagai | 1988-03-22 |