Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6085000 | Wavelength division multiplexing optical device and manufacturing method therefor | Kazuhiro Tanaka, Goji Nakagawa, Haruhiko Tabuchi | 2000-07-04 |
| 5960141 | Optical transmission terminal device | Seimi Sasaki, Kazuhiro Tanaka, Goji Nakagawa, Kazunori Miura | 1999-09-28 |