Issued Patents All Time
Showing 1–22 of 22 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10333280 | Semiconductor laser device | Hiroyuki Ishii, Naoki Fujiwara, Kei Watanabe, Mikitaka Itoh, Keisuke Kasai | 2019-06-25 |
| 8170071 | Laser apparatus | Akihito Suzuki, Toshihiko Hirooka, Masato Yoshida, Kazunori Shiota | 2012-05-01 |
| 7898733 | Laser oscillator | Kazunori Shiota, Shin Masuda, Masato Yoshida | 2011-03-01 |
| 7747175 | Optical transmission method and optical transmission apparatus | Toshihiko Hirooka | 2010-06-29 |
| 7715724 | Optical synchronizer | Shigeki Watanabe | 2010-05-11 |
| 7672593 | OTDM transmission method and apparatus | Toshihiko Hirooka | 2010-03-02 |
| 7602546 | Laser oscillator | Kazunori Shiota, Shin Masuda, Masato Yoshida | 2009-10-13 |
| 7428096 | Optical pulse compressor, optical function generator, optical pulse compression method, and optical function generation method | Toshihiko Hirooka | 2008-09-23 |
| 7352504 | Optical fourier transform device and method | Toshihiko Hirooka | 2008-04-01 |
| 7130752 | Measuring-instrument remote-calibration system and measuring-instrument remote-calibration method | Haruo Yoshida, Hirokazu Matsumoto, Yoshio Hino, Masaru Arai | 2006-10-31 |
| 6795614 | Method of making phase mask for machining optical fiber and optical fiber having bragg diffraction grating produced using the phase mask for machining optical fiber | Toshikazu Segawa, Masaaki Kurihara, Tetsuro Komukai | 2004-09-21 |
| 6631145 | Wavelength-tunable mode-locked laser, wavelength converter and transmission system | Kohichi Tamura, Tetsuro Komukai | 2003-10-07 |
| 6466714 | Method of producing phase mask for fabricating optical fiber and optical fiber with bragg's diffraction grating produced by using the phase mask | Masaaki Kurihara, Toshikazu Segawa, Tetsuro Komukai | 2002-10-15 |
| 6333942 | Atomic frequency standard laser pulse oscillator | Eiji Yoshida | 2001-12-25 |
| 6108465 | Optical pulse generator | Rikihiro Iida, Akio Ichikawa, Yoshihiro Kumagai, Yuka Asahina, Eiji Yoshida | 2000-08-22 |
| 6101021 | Optical pulse generator | Yoshihiro Kumagai, Akio Ichikawa, Rikihiro Iida, Eiji Yoshida | 2000-08-08 |
| 5926492 | Laser pulse oscillator | Eiji Yoshida | 1999-07-20 |
| 5695880 | Lead-containing fluoride glass, optical fiber and process for producing it | Takashi Kogo, Hiroo Kanamori, Masashi Onishi, Yoshiaki Miyajima | 1997-12-09 |
| 5583959 | Optical pulse compression device | Eiji Yoshida | 1996-12-10 |
| 5432131 | Lead-containing fluoride glass, optical fiber and process for producing it | Takashi Kogo, Hiroo Kanamori, Masashi Onishi, Yoshiaki Miyajima | 1995-07-11 |
| 5206925 | Rare earth element-doped optical waveguide and process for producing the same | Yasuo Kimura, Katsuyuki Imoto, Seiichi Kashimura, Toshikazu Kamoshida, Fujio Kikuchi | 1993-04-27 |
| 5134672 | Optical waveguide type star coupler | Katsuyuki Imoto, Yasuo Kimura | 1992-07-28 |