Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 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 |