Issued Patents All Time
Showing 25 most recent of 42 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5179567 | Semiconductor laser device, method of fabricating the same and optical system of utilizing the same | Kazuhisa Uomi, Masahiro Aoki | 1993-01-12 |
| 5177758 | Semiconductor laser device with plural active layers and changing optical properties | Akihiko Oka, Shinji Sakano, Tsukuru Ohtoshi, Kazuhisa Uomi, Tomonobu Tsuchiya +1 more | 1993-01-05 |
| 5173909 | Wavelength tunable laser diode | Shinji Sakano, Akihiko Oka, Katutoshi Saito | 1992-12-22 |
| 5170404 | Semiconductor laser device suitable for optical communications systems drive | Tsukuru Ohtoshi, Shinji Sasaki, Kazuhisa Uomi, Shinji Sakano | 1992-12-08 |
| 5136601 | Semiconductor laser | Takashi Kajimura, Yuichi Ono, Shinichi Nakatsuka, Kazuhisa Uomi, Toshihiro Kawano +2 more | 1992-08-04 |
| 5132981 | Semiconductor optical device | Kazuhisa Uomi, Shinji Sasaki, Tomonobu Tsuchiya, Tsukuru Ohtoshi | 1992-07-21 |
| 5119393 | Semiconductor laser device capable of controlling wavelength shift | Akihiko Oka, Shinji Sakano, Tsukuru Ohtoshi, Kazuhisa Uomi, Tomonobu Tsuchiya +1 more | 1992-06-02 |
| 5073892 | Semiconductor laser device | Kazuhisa Uomi, Tsukuru Ohtoshi, Tomonobu Tsuchiya, Shinji Sasaki | 1991-12-17 |
| 5042049 | Semiconductor optical device | Tsukuru Ohtoshi, Shinji Sakano, Kazuhisa Uomi | 1991-08-20 |
| 4905060 | Light emitting device with disordered region | Hisao Nakashima, Makoto Okai, Shinji Tsuji | 1990-02-27 |
| 4894835 | Surface emitting type semiconductor laser | Kazuhisa Uomi, Shinji Tsuji, Makoto Okai, Shinji Sakano | 1990-01-16 |
| 4885753 | Semiconductor laser device of variable wavelength type | Makoto Okai, Kazuhisa Uomi, Shinji Tsuji, Shinji Sakano | 1989-12-05 |
| 4881238 | Semiconductor laser having quantum well active region doped with impurities | Kazuhisa Uomi, Tadashi Fukuzawa, Hideaki Matsueda, Takashi Kajimura | 1989-11-14 |
| 4881235 | Semiconductor laser having a multiple quantum well structure doped with impurities | Kazuhisa Uomi, Tadashi Fukuzawa, Hideaki Matsueda, Takashi Kajimura, Tsukuru Ohtoshi | 1989-11-14 |
| 4873691 | Wavelength-tunable semiconductor laser | Kazuhisa Uomi, Shinji Tsuji, Shinji Sakano, Makoto Okai | 1989-10-10 |
| 4861130 | Optical modulating device utilizing polariton substance | Toshio Katsuyama, Hiroyoshi Matsumura, Hiroaki Inoue, Tadashi Fukuzawa | 1989-08-29 |
| 4841536 | Semiconductor laser devices | Aiko Ohishi, Motohisa Hirao, Shinji Tsuji, Hitoshi Nakamura, Hiroyoshi Matsumura | 1989-06-20 |
| 4835578 | Semiconductor device having a quantum wire and a method of producing the same | Tsukuru Ohtoshi, Kazuhisa Uomi, Tadashi Fukuzawa | 1989-05-30 |
| 4827483 | Semiconductor laser device and method of fabricating the same | Tadashi Fukuzawa, Shin'ichi Nakatsuka, Katsutoshi Saito, Takashi Kajimura, Yuuichi Ono | 1989-05-02 |
| 4821275 | Laser diode | Shinichi Nakatsuka, Kazuhisa Uomi, Yuichi Ono, Takashi Kajimura | 1989-04-11 |
| 4813757 | Optical switch including bypass waveguide | Shinji Sakano, Hiroaki Inoue, Hiroyoshi Matsumura, Hitoshi Nakamura, Toshio Katsuyama | 1989-03-21 |
| 4811354 | Semiconductor laser | Kazuhisa Uomi, Misuzu Yoshizawa, Shin'ichi Nakatsuka, Takashi Kajimura, Yuichi Ono | 1989-03-07 |
| 4797891 | Semiconductor laser | Kazuhisa Uomi, Misuzu Yoshizawa, Yuichi Ono, Takashi Kajimura | 1989-01-10 |
| 4780879 | Semiconductor laser device having little astigmatism | Shigeo Yamashita, Shin'ichi Nakatsuka, Akemi Yamanaka, Yuichi Ono, Toshihiro Kawano +4 more | 1988-10-25 |
| 4775980 | Distributed-feedback semiconductor laser device | Shinji Tsuji, Yoshihisa Fujisaki, Yasutoshi Kashiwada, Motohisa Hirao, Hitoshi Nakamura +4 more | 1988-10-04 |