Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6771864 | Optical fiber transmission line, optical cable, and optical transmission system | Yuji Kubo, Makoto Shimizu | 2004-08-03 |
| 6687443 | Optical fiber transmission line, optical cable, and optical transmission system | Yuji Kubo, Makoto Shimizu | 2004-02-03 |