Issued Patents All Time
Showing 51–75 of 85 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7860141 | Photonic crystal laser | Masahiro Imada, Dai Ohnishi | 2010-12-28 |
| 7853111 | Two-dimensional photonic crystal | Takashi Asano, Seiichi Takayama, Hitoshi Kitagawa | 2010-12-14 |
| 7783139 | Polarized light mode converter | Takashi Asano, Yoshinori Tanaka, Seiichi Takayama | 2010-08-24 |
| 7738749 | Photonic crystal having heterostructure and optical device using the photonic crystal | Takashi Asano, Seiichi Takayama | 2010-06-15 |
| 7715668 | Polarization-independent two-dimensional photonic crystal multiplexer/demultiplexer | Takashi Asano, Yoshinori Tanaka | 2010-05-11 |
| 7711228 | Two-dimensional photonic crystal and optical device using the crystal | Takashi Asano, Hitoshi Kitagawa, Seiichi Takayama | 2010-05-04 |
| 7656925 | Two-dimensional photonic crystal surface emitting laser | Koji Otsuka, Eiji Miyai, Kyosuke Sakai, Yoshitaka Kurosaka, Dai Ohnishi +1 more | 2010-02-02 |
| 7639720 | Two-dimensional photonic crystal surface emitting laser | Jun Kashiwagi, Dai Ohnishi, Wataru Kunishi | 2009-12-29 |
| 7590325 | Two-dimensional photonic crystal optical multiplexer/demultiplexer | Masamitu Mochizuki, Takashi Asano | 2009-09-15 |
| 7535943 | Surface-emitting laser light source using two-dimensional photonic crystal | Eiji Miyai, Dai Onishi | 2009-05-19 |
| 7509014 | Two-dimensional photonic crystal having air-bridge structure and method for manufacturing such a crystal | Ranko Hatsuda, Takashi Asano, Yoshinori Tanaka, Eiji Miyai | 2009-03-24 |
| 7509013 | Two-dimensional photonic crystal | Takashi Asano, Seiichi Takayama, Ranko Hatsuda | 2009-03-24 |
| 7450810 | Two-dimensional photonic crystal cavity and channel add/drop filter | Takashi Asano, Yoshihiro Akahane | 2008-11-11 |
| 7436873 | Optical device and semiconductor laser oscillator | Atsushi Sugitatsu | 2008-10-14 |
| 7428352 | Two-dimensional photonic crystal and optical function element using the same | Takashi Asano, Bong-Shik Song, Seiichi Takayama | 2008-09-23 |
| 7406221 | Two-dimensional photonic crystal multiplexer/demultiplexer | Takashi Asano, Yoshihiro Akahane | 2008-07-29 |
| 7397994 | Two-dimensional photonic crystal slab having three-dimensional local structure | Takashi Asano, Yoshinori Tanaka | 2008-07-08 |
| 7390683 | Method of manufacturing a semiconductor device including a slab layer with a periodic air hole structure and a linear defect region | Atsushi Sugitatsu, Hitoshi Tada | 2008-06-24 |
| 7336879 | Two-dimensional photonic crystal slab, two-dimensional photonic crystal waveguide, and optical device | Hitoshi Kitagawa, Takashi Asano | 2008-02-26 |
| 7333703 | Two-dimensional photonic crystal having air-bridge structure and method for manufacturing such a crystal | Ranko Hatsuda, Takashi Asano, Yoshinori Tanaka, Eiji Miyai | 2008-02-19 |
| 7321707 | Electromagnetic wave frequency filter | Takashi Asano, Bong-Shik Song, Hitomichi Takano | 2008-01-22 |
| 7224862 | Two-dimensional photonic crystal optical multiplexer/demultiplexer using boundary reflection | Takashi Asano | 2007-05-29 |
| 7184638 | Electromagnetic wave frequency filter | Takashi Asano, Hitomichi Takano | 2007-02-27 |
| 7181120 | Optical active device | Atsushi Sugitatsu | 2007-02-20 |
| 7158695 | Optical delay circuit, integrated optical device, and method of manufacturing integrated optical device | Atsushi Sugitatsu, Tatsuo Hatta | 2007-01-02 |