Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5949945 | Optical waveguide, optical module and optical system using the same | Hiroaki Okano, Yasuharu Mutoh | 1999-09-07 |
| 5206925 | Rare earth element-doped optical waveguide and process for producing the same | Masataka Nakazawa, Yasuo Kimura, Katsuyuki Imoto, Seiichi Kashimura, Fujio Kikuchi | 1993-04-27 |