Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11923897 | Method, device and program for estimating optical communication status | Takayuki Nakachi, Yitu WANG, Tetsuro Inui, Takafumi Tanaka, Takahiro Yamaguchi | 2024-03-05 |
| 8625588 | Packet transmission method and packet transmission device | Ippei Shake, Mitsunori Fukutoku, Wataru Imajyuku | 2014-01-07 |
| 8134920 | Device and method for correcting a path trouble in a communication network | Wataru Imajuku, Yoshihiro Takikawa, Eiji Oki, Yasutaka Okazaki | 2012-03-13 |
| 7869428 | Packet transmission method and packet transmission device | Ippei Shake, Mitsunori Fukutoku, Wataru Imajyuku | 2011-01-11 |
| 6947377 | Path network and path network operation method using conversion of protection path into working path | Satoru Okamoto, Atsushi Watanabe | 2005-09-20 |