Issued Patents 2002
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6496288 | Wavelength multiplexing transmission apparatus and wavelength demultiplexing reception apparatus | Takashi Tsuda, Yumiko Kawasaki, Satoru Okano | 2002-12-17 |
| 6449074 | Optical transmission device and optical communication system | Satoru Okano, Hiroshi Nishimoto, Takashi Tsuda, Yumiko Kawasaki | 2002-09-10 |