Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9215011 | Optical receiver and optical receiving method | Kiichi Sugitani, Eri Katayama | 2015-12-15 |
| 8934789 | Optical receiver, optical reception method and optical reception system | Kiichi Sugitani, Eri Katayama, Takahito Tanimura | 2015-01-13 |
| 8553825 | Phase synchronization apparatus and digital coherent light receiver | Kiichi Sugitani, Yuji Ishii, Hisao Nakashima | 2013-10-08 |
| 8447190 | Distortion compensating apparatus, optical receiving apparatus, and optical transmitting and receiving system | Takahito Tanimura, Takeshi Hoshida, Hisao Nakashima, Kiichi Sugitani | 2013-05-21 |
| 7577098 | Device and method for network monitoring | Nobuyuki Tamura, Tomonori Gotoh, Kiichi Sugitani, Ryota Komatsu | 2009-08-18 |
| 7106761 | Multiplexing method and apparatus suitable for transmission of overhead data arriving from many communication lines | Hidetoshi Kawamura, Seiji Miyahara, Isao Takata, Kanji Naito | 2006-09-12 |
| 6785224 | Ring configuring method and node apparatus used in the ring | Kumiko Uematsu, Hiroshi Kanzawa, Takashi Honda, Junichi Moriyama, Hidetoshi Kawamura +3 more | 2004-08-31 |