Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5529595 | Method of positioning elements of an optical integrated circuit | Takeo Shimizu, Isao Ohyama, Shiro Nakamura, Hisaharu Yanagawa | 1996-06-25 |
| 5440656 | Waveguide type optical component having optical coupling sections with different coupling efficiencies | Takeo Shimizu, Hisaharu Yanagawa | 1995-08-08 |
| 5378256 | Method of manufacturing silica waveguide optical components | Mino Green, R. R. A. Syms, Andrew Holmes, Hisaharu Yanagawa | 1995-01-03 |
| 5297228 | Method of connecting an optical fiber to an optical waveguide | Hisaharu Yanagawa, Takeo Shimizu, Shiro Nakamura | 1994-03-22 |
| 5291575 | Manufacturing method for waveguide-type optical components | Hisaharu Yanagawa | 1994-03-01 |
| 5148505 | Optical semiconductor waveguide switch | Hisaharu Yanagawa, Yoshiyuki Kamata, Hidehisa Miyazawa | 1992-09-15 |
| 5033811 | Optical switch | Hisaharu Yanagawa, Yoshiyuki Kamata, Hidehisa Miyazawa | 1991-07-23 |