Patents per Year
Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date | Approx Value ⓘ |
|---|---|---|---|---|
| 7920559 | Transponder, transmission system, transmission method and transmission program | Naoya Shiota, Tsutomu Tajima | 2011-04-05 | |
| 6803857 | Remote control system | Kazuhiko Nakamura | 2004-10-12 | $1,000 |
| 6486991 | Optical transmission system having an optical surge suppression function | — | 2002-11-26 | $9,000 |
| 6335810 | Optical ADM apparatus and an ADM optical transmission system including the optical ADM apparatus | — | 2002-01-01 | |
| 6320684 | WDM optical transmission system | — | 2001-11-20 | $20,000 |
| 6256125 | WDM optical transmission system | — | 2001-07-03 | $33,000 |