Issued Patents All Time
Showing 1–25 of 25 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7733934 | Optical waveguide and semiconductor optical element | Takeshi Yamatoya, Yasunori Miyazaki | 2010-06-08 |
| 7723666 | Photodiode array configured to increase electrical output power and optical microwave transmission system receiver utilizing the same | Tsutomu Nagatsuka, Yoshihito Hirano, Tomohiro Akiyama, Ryuji Ishii, Masahito Sato +1 more | 2010-05-25 |
| 7365904 | Optical wavelength converter | Keisuke Matsumoto, Kazuhisa Takagi | 2008-04-29 |
| 7277465 | Semiconductor laser | Satoshi Shirai | 2007-10-02 |
| 6788725 | Semiconductor laser device | Go Sakaino | 2004-09-07 |
| 5909523 | Optical module and method of fabricating optical module | Go Sakaino, Katsuhiko Goto | 1999-06-01 |
| 5906753 | Method of making optical semi-conductor device | Yasunori Miyazaki | 1999-05-25 |
| 5790737 | Optical semiconductor device | Yasunori Miyazaki | 1998-08-04 |
| 5638391 | Semiconductor laser device and optical disc apparatus provided with the semiclonductor laser device | Akihiro Shima, Yoriko Tanigami | 1997-06-10 |
| 5550855 | Optical modulator | Hitoshi Watanabe, Yasunori Miyazaki, Kunihiko Isshiki | 1996-08-27 |
| 5332695 | Method of manufacturing semi conductor device mounted on a heat sink | Kimio Shigihara, Yutaka Nagai | 1994-07-26 |
| 5282219 | Semiconductor laser structure having a non-reflection film | Kimio Shigihara | 1994-01-25 |
| 5247203 | Semiconductor device mounted on a heat sink with an intervening amorphous semiconductor material | Kimio Shigihara, Yutaka Nagai | 1993-09-21 |
| 5214663 | Semiconductor laser | Syoichi Kakimoto, Tomoko Kadowaki, Kazuhisa Takagi | 1993-05-25 |
| 5185287 | Method for producing a quantum well structure | Kimio Shigihara | 1993-02-09 |
| 5185290 | Method of coating facet of semiconductor optical element | Kimio Shigihara | 1993-02-09 |
| 5177749 | Semiconductor laser device | Kimio Shigihara, Yutaka Nagai | 1993-01-05 |
| 5170458 | Optical fiber light-amplifier system | Kimio Shigihara | 1992-12-08 |
| 5161164 | Semiconductor laser device | Kimio Shigihara, Yutaka Nagai | 1992-11-03 |
| 5157681 | Wavelength-tunable distributed Bragg reflector semiconductor laser | Satoshi Arimoto | 1992-10-20 |
| 5048037 | Semiconductor laser device | Satoshi Arimoto | 1991-09-10 |
| 5025450 | Semiconductor laser device | Takashi Motoda | 1991-06-18 |
| 4988404 | Method of producing a primary diffraction grating | — | 1991-01-29 |
| 4924474 | Laser device with high oscillation efficiency | Shigenori Yagi, Yasuhito Myoi, Masaki Kuzumoto, Kazuki Kuba, Yoshito Seiwa +1 more | 1990-05-08 |
| 4868837 | Semiconductor laser | Yoshito Seiwa | 1989-09-19 |