Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7295588 | Semiconductor laser element, method of fabrication thereof, and multi-wavelength monolithic semiconductor laser device | Akira Tanaka, Hideo Shiozawa, Minoru Watanabe, Hirokazu Tanaka | 2007-11-13 |
| 7221692 | Semiconductor laser device and its manufacturing method | Akira Tanaka, Yoshiyuki Itoh, Osamu Horiuchi, Akio Makuta, Hideo Shiozawa | 2007-05-22 |
| 7164701 | Semiconductor laser and method for manufacturing the same | Akira Tanaka, Hirokazu Tanaka, Yoshiyuki Itoh | 2007-01-16 |
| 6804276 | Semiconductor laser device which removes influences from returning light of three beams and a method of manufacturing the same | Kazuo Fukuoka, Seiji Iida, Makoto Okada | 2004-10-12 |
| 6628689 | Semiconductor laser device and method of fabricating the same | Makoto Okada | 2003-09-30 |
| 6618420 | Monolithic multi-wavelength semiconductor laser unit | Hideo Shiozawa, Akira Tanaka | 2003-09-09 |
| 5229879 | Semiconductor laser amplifier | — | 1993-07-20 |