Issued Patents All Time
Showing 26–28 of 28 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5781332 | Variable wavelength optical filter | — | 1998-07-14 |
| 5739934 | Wavelength division multiplexing lightwave transmission system | Kenichi Nomura | 1998-04-14 |
| 5442476 | Optical communication method | Shuntaro Yamazaki | 1995-08-15 |