Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7046881 | Manufacturing method for optical coupler/splitter and method for adjusting optical characteristics of planar lightwave circuit device | Ken Sakuma, Tomoko Shikata, Hirokuni Ogawa, Hideyuki Hosoya, Akira Wada | 2006-05-16 |
| 6945078 | Optical waveguide in the interior of silica glass and method of forming optical waveguide | Takeshi Fukuda, Tomoko Fujii, Ken Sakuma, Hideyuki Hosoya | 2005-09-20 |