Issued Patents All Time
Showing 1–25 of 28 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5649037 | Optical waveguide component and a light signal processing method using the same | Isao Ohyama, Shiro Nakamura, Takeo Shimizu, Hideyuki Iwata | 1997-07-15 |
| 5583958 | Composite optical device | Takeo Shimizu, Shiro Nakamura, Shinichi Furukawa | 1996-12-10 |
| 5548675 | Multifiber connector, a method of manufacturing the same, and a construction for connecting the multifiber connector to an optical device | Takashi Shigematsu, Takeo Shimizu, Shiro Nakamura, Kazuya Fukasawa, Tomohiro Watanabe | 1996-08-20 |
| 5529595 | Method of positioning elements of an optical integrated circuit | Ken Ueki, Takeo Shimizu, Isao Ohyama, Shiro Nakamura | 1996-06-25 |
| 5453874 | Semiconductor optical component and manufacturing method therefor | Takahiro Ono | 1995-09-26 |
| 5440656 | Waveguide type optical component having optical coupling sections with different coupling efficiencies | Ken Ueki, Takeo Shimizu | 1995-08-08 |
| 5396569 | Optical line monitoring method and an apparatus permitting simultaneous line monitoring and information communication | Takeo Shimizu, Shiro Nakamura, Isao Ohyama, Izumi Sankawa | 1995-03-07 |
| 5390267 | Optical fiber/terminal connecting device | Takeo Shimizu | 1995-02-14 |
| 5378256 | Method of manufacturing silica waveguide optical components | Mino Green, R. R. A. Syms, Andrew Holmes, Ken Ueki | 1995-01-03 |
| 5369718 | Total internal reflection-type optical waveguide switch | Yoshiyuki Kamata | 1994-11-29 |
| 5361382 | Method of connecting optical waveguide and optical fiber | Shirou Nakamura, Takeo Shimizu, Toshihiko Ohta, Takashi Shigematsu, Toshihiro Ochiai +1 more | 1994-11-01 |
| 5333232 | Optical fiber for connection to waveguide type optical device and method of manufacturing the same | Takahiro Ono | 1994-07-26 |
| 5321782 | Directional coupler type optical function element | Akira Mugino | 1994-06-14 |
| 5301252 | Mode field conversion fiber component | Hirokazu Hayakawa | 1994-04-05 |
| 5297228 | Method of connecting an optical fiber to an optical waveguide | Takeo Shimizu, Shiro Nakamura, Ken Ueki | 1994-03-22 |
| 5291575 | Manufacturing method for waveguide-type optical components | Ken Ueki | 1994-03-01 |
| 5255334 | Directional coupler type optical device and a driving method therefor | Hon-Ming Mak | 1993-10-19 |
| 5214725 | Optical coupler/splitter with a filter | Takeo Shimizu, Shiro Nakamura, Isao Ohyama | 1993-05-25 |
| 5179604 | Waveguide-type coupler/splitter | Takeo Shimizu, Shiro Nakamura, Isao Oyama | 1993-01-12 |
| 5177804 | Waveguide-type optical switch | Takeo Shimizu | 1993-01-05 |
| 5148505 | Optical semiconductor waveguide switch | Yoshiyuki Kamata, Ken Ueki, Hidehisa Miyazawa | 1992-09-15 |
| 5146518 | Optical directional coupler device and a method of driving same | Hon-Ming Mak | 1992-09-08 |
| 5033811 | Optical switch | Yoshiyuki Kamata, Ken Ueki, Hidehisa Miyazawa | 1991-07-23 |
| 4958897 | Thin film optical component for use in optical transmission lines and method of manufacturing the same | Toshihiro Ochiai, Hirokazu Hayakawa, Hidehisa Miyazawa | 1990-09-25 |
| 4909590 | Method and apparatus for switching optical connector | Kazuo Kamiko, Shizuka Yamaguchi, Isamu Kinoshita, Koji Sasaki, Kazuhiro Miyazawa +3 more | 1990-03-20 |