Issued Patents All Time
Showing 26–50 of 50 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8183073 | Method of manufacturing a semiconductor device with quantum dots formed by self-assembled growth | Yasuhiko Arakawa, Denis Guimard, Shiro Tsukamoto, Hiroji Ebe | 2012-05-22 |
| 8160116 | Semiconductor laser and method for manufacturing the same | Tomoyuki Akiyama | 2012-04-17 |
| 7892871 | Method of manufacturing semiconductor device with quantum dots formed by self-assembled growth | Yasuhiko Arakawa, Denis Guimard, Shiro Tsukamoto, Hiroji Ebe | 2011-02-22 |
| 7652179 | Gas for plasma reaction, process for producing the same, and use thereof | Toshiro Yamada, Tatsuya Sugimoto, Kimiaki Tanaka | 2010-01-26 |
| 7449415 | Gas for plasma reaction and process for producing thereof | Toshinobu Hirayama, Toshiro Yamada, Tatsuya Sugimoto | 2008-11-11 |
| 7341764 | Gas for plasma reaction, process for producing the same, and use | Toshiro Yamada, Tatsuya Sugimoto, Kimiaki Tanaka | 2008-03-11 |
| 7308210 | Optical modulating device, optical transmitting apparatus using the same, method of controlling optical modulating device, and control program recording medium | Tattee Khayim, Ko Koga, Hiroyuki Agatsuma, Sadao Tanikoshi | 2007-12-11 |
| 7081983 | Wavelength conversion device | Tomoyuki Akiyama, Nobuaki Hatori | 2006-07-25 |
| 7015498 | Quantum optical semiconductor device | Hiroji Ebe, Yoshiaki Nakata, Takashi Kita, Osamu Wada, Yasuhiko Arakawa | 2006-03-21 |
| 6983108 | Optical switching apparatus and optical transmission apparatus | Takashi Yano, Kyosuke Dobashi, Katsumi Kusama, Sadao Tanikoshi, Kazuhiko Ide +3 more | 2006-01-03 |
| 6895028 | Light-emitting element controller, optical transmitting apparatus, and method and computer program for determining driving current | — | 2005-05-17 |
| 6884365 | Gas for plasma reaction and method for production thereof | Toshinobu Hirayama, Toshiro Yamada, Tatsuya Sugimoto | 2005-04-26 |
| 6718138 | Digital-signal quality monitoring method and communications apparatus using this method | — | 2004-04-06 |
| 6639254 | Epitaxial layer capable of exceeding critical thickness | Koki Mukai | 2003-10-28 |
| 6590701 | Optical signal processing method and apparatus | — | 2003-07-08 |
| 6230195 | Communication system, user apparatus, center apparatus, and terminal interface unit for use in communication system | Masatoshi Nakao, Hiroyuki Ibe | 2001-05-08 |
| 6211420 | Process for the preparation of fluorinated olefin | Akira Sekiya, Toshiro Yamada | 2001-04-03 |
| 6081355 | Multi-wavelength light source | Manish Sharma | 2000-06-27 |
| 6057951 | Optical receiving circuit | — | 2000-05-02 |
| 5136602 | Optical semiconductor device | — | 1992-08-04 |
| 5113283 | Optical intensity modulator | — | 1992-05-12 |
| 5026134 | Optical communication apparatus with base for fixing elements | Akitoshi Yoshinaga, Fumihiko Shimizu, Masayuki Takami | 1991-06-25 |
| 5001521 | Semiconductor substrate including strained layer superlattice structure layer | Hiroshi Okuda | 1991-03-19 |
| 4997252 | Optical fiber communication connection device | Akitoshi Yoshinaga, Masahiro Sakakibara | 1991-03-05 |
| 4989943 | Optical fiber alignment device | Akitoshi Yoshinaga | 1991-02-05 |