Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8125705 | Processing method for suppressing photodarkening in Yb-doped optical fibers, photodarkening-suppressed Yb-doped optical fiber, and fiber laser | Kentaro Ichii | 2012-02-28 |
| 7427838 | Light source controlling circuit and portable electronic apparatus | — | 2008-09-23 |
| 7346236 | Collimator lens, fiber collimator and optical parts | Kenichiro Asano | 2008-03-18 |
| 7195400 | Optical connector and assembling method for the same | Mariko Asano, Koki NARITA, Yoshihiro Ouchi, Yasuhiro Tamaki, Yoshikazu Nomura | 2007-03-27 |
| 7046872 | Optical switch, optical add-drop module, and optical communication system | Ken Sakuma, Daigo Fujita, Hirokuni Ogawa, Koji Omichi | 2006-05-16 |
| 7046881 | Manufacturing method for optical coupler/splitter and method for adjusting optical characteristics of planar lightwave circuit device | Ken Sakuma, Shimon Ishikawa, Tomoko Shikata, Hirokuni Ogawa, Akira Wada | 2006-05-16 |
| 6945078 | Optical waveguide in the interior of silica glass and method of forming optical waveguide | Takeshi Fukuda, Shimon Ishikawa, Tomoko Fujii, Ken Sakuma | 2005-09-20 |
| 6741775 | Optical switch | Ken Sakuma, Daigo Fujita, Toshisada Sekiguchi | 2004-05-25 |
| 6690852 | Optical multiplexer/demultiplexer | Hirokuni Ogawa, Katsutoshi Kohmoto, Kouji Ohura, Kenichiro Asano | 2004-02-10 |