Issued Patents 2003
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6556749 | Array waveguide grating and method of manufacture thereof | Hisato Uetsuka, Koichi Maru, Takafumi Chiba | 2003-04-29 |
| 6549696 | Optical wavelength multiplexer/demultiplexer | Hisato Uetsuka, Koichi Maru, Hideki Nounen, Tatsuo Teraoka | 2003-04-15 |