Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8946750 | Semiconductor light emitting device | Kazuhito Higuchi, Takayoshi Fujii, Akihiro Kojima, Susumu Obata, Toshiyuki Terada | 2015-02-03 |
| 7295588 | Semiconductor laser element, method of fabrication thereof, and multi-wavelength monolithic semiconductor laser device | Akira Tanaka, Minoru Watanabe, Koichi Gen-Ei, Hirokazu Tanaka | 2007-11-13 |
| 7221692 | Semiconductor laser device and its manufacturing method | Akira Tanaka, Yoshiyuki Itoh, Osamu Horiuchi, Akio Makuta, Koichi Gen-Ei | 2007-05-22 |
| 6646975 | Semiconductor laser array and its manufacturing method, optical integrated unit and optical pickup | Ichiro Uchizaki, Kazushige Mori | 2003-11-11 |
| 6618420 | Monolithic multi-wavelength semiconductor laser unit | Koichi Gen-Ei, Akira Tanaka | 2003-09-09 |
| 6165243 | Anti-mold and anti-bacteria air filter | Ei Kawaguchi | 2000-12-26 |
| 5181218 | Manufacturing method of semiconductor laser with non-absorbing mirror structure | Masayuki Ishikawa, Hajime OKUDA, Kazuhiko Itaya, Yukio Watanabe, Mariko Suzuki +1 more | 1993-01-19 |
| 5086511 | Mobile receiver | Akikazu Kobayashi | 1992-02-04 |
| 5036521 | Semiconductor laser device | Genichi Hatakoshi, Kazuhiko Itaya, Shigeya Naritsuka, Masayuki Ishikawa, Hajime OKUDA +4 more | 1991-07-30 |
| 5034957 | Semiconductor laser device | Yasuo Ohba, Yukie Nishikawa, Hajime OKUDA, Masayuki Ishikawa, Hideto Sugawara +1 more | 1991-07-23 |
| 4987096 | Manufacturing method of semiconductor laser with non-absorbing mirror structure | Masayuki Ishikawa, Hajime OKUDA, Kazuhiko Itaya, Yukio Watanabe, Mariko Suzuki +1 more | 1991-01-22 |
| 4893313 | Semiconductor laser device which has a double-hetero structure having an optimal layer thickness | Genichi Hatakoshi, Kazuhiko Itaya, Shigeya Naritsuka, Masayuki Ishikawa, Hajime OKUDA +4 more | 1990-01-09 |