Issued Patents 2004
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6829080 | Optical waveguide device and light source and optical apparatus using the same | Akihiro Morikawa, Ken'ichi Kasazumi, Yasuo Kitaoka, Kazuhisa Yamamoto | 2004-12-07 |
| 6785457 | Optical waveguide device and coherent light source and optical apparatus using the same | Kazuhisa Yamamoto, Ken'ichi Kasazumi, Yasuo Kitaoka | 2004-08-31 |
| 6711183 | Optical wavelength conversion device, coherent light generator, and optical information processing apparatus | Kazuhisa Yamamoto, Yasuo Kitaoka | 2004-03-23 |
| 6704337 | Wavelength-variable semiconductor laser, optical integrated device utilizing the same, and production method thereof | Yasuo Kitaoka, Kazuhisa Yamamoto | 2004-03-09 |
| 6693936 | Wavelength-variable semiconductor laser, optical integrated device utilizing the same, and production method thereof | Yasuo Kitaoka, Kazuhisa Yamamoto | 2004-02-17 |