Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9564964 | Optical signal processing device, optical signal processing method and recording medium | Taku Saito, Katsumi Fukumitsu, Osamu Takeuchi, Hirofumi Araki, Shoichi Murakami | 2017-02-07 |
| 9515848 | Transmission device, transmission system, and transmission method | Toshihiro Togo, Koji Takeguchi, Mineshi Nakashima | 2016-12-06 |
| 9160453 | Ring network setup method | Takashi Honda, Hiroyuki Homma, Toru Katagiri, Ryoichi Mutoh | 2015-10-13 |
| 9154373 | Failure protection method and node apparatus | Toshihiro Togo, Toru Katagiri, Koji Takeguchi, Mineshi Nakashima | 2015-10-06 |
| 8681785 | Communication apparatus and path setting control method | Katsuhiro Shirai, Koji Takeguchi | 2014-03-25 |
| 7106761 | Multiplexing method and apparatus suitable for transmission of overhead data arriving from many communication lines | Kazunari Shiota, Hidetoshi Kawamura, Seiji Miyahara, Isao Takata | 2006-09-12 |
| 6785224 | Ring configuring method and node apparatus used in the ring | Kumiko Uematsu, Hiroshi Kanzawa, Takashi Honda, Junichi Moriyama, Kazunari Shiota +3 more | 2004-08-31 |
| 5978354 | Optical transmission system and transmission line switching control method | Hisashi Taketomi, Hatsumi Iino, Fumihiro Ikawa, Junichi Moriyama | 1999-11-02 |
| 5168500 | Method for automatically discriminating low-speed interface units installed in an optical data transmission apparatus together with automatically confirming the installation | Masumi Kurokawa, Kazuhiko Taniguchi | 1992-12-01 |