Issued Patents All Time
Showing 51–54 of 54 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5359684 | Optical lensed coupler for use with a planar waveguide | Tsukasa Yamashita | 1994-10-25 |
| 5138687 | Rib optical waveguide and method of manufacturing the same | Noriyoshi Horie, Masami Tada, Tsukasa Yamashita, Tatsuo Ohgaki, Hironobu Kiyomoto | 1992-08-11 |
| 5132843 | Grating lens and focusing grating coupler | Shigeru Aoyama, Masami Tada, Noriyoshi Horie, Tukasa Yamashita | 1992-07-21 |
| 5114513 | Optical device and manufacturing method thereof | Tsukasa Yamashita | 1992-05-19 |