Issued Patents 2002
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6501774 | Optical transmission apparatus for multiple wavelengths and optical transmission wavelength control method | Hiroshi Kuwahara, Norio Nagase, Setsuo Misaizu, Tomoyuki Otsuka, Motoyoshi Sekiya | 2002-12-31 |
| 6483625 | WDM optical transmission apparatus | Yoshitaka Shimura, Motoyoshi Sekiya | 2002-11-19 |