Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8406624 | Degree extending method and optical hub node apparatus | Gaku Kimura, Takayuki Shimizu | 2013-03-26 |
| 8189180 | Optical fiber transmission line measurement apparatus and system | Koji Bato, Yoshinori Tochiki, Haruka Miyazaki, Akira Yamamoto, Katsumi Sugawa +2 more | 2012-05-29 |
| 8102945 | Signal processing device and signal processing method | Tsutomu Tsurumi, Miwa Taniguchi, Eiji Iida | 2012-01-24 |
| 7630644 | Optical add/drop multiplexer, control method therefor and control program therefor | Akira Yamamoto, Haruki Tanaka, Tatsuo Nagayoshi, Tomoyuki Sakata | 2009-12-08 |
| 7551828 | Optical transmission device for controlling optical level of transmission signal in optical transmission system | Yuji Shimada, Takuji Maeda, Kouji Nekoda, Masanori Kondoh | 2009-06-23 |
| 7065297 | Optical transmission system | Kazunori Horachi, Kazuo Tanaka, Nobuyuki Nemoto, Hiroyuki Matsumoto, Miwa Taniguchi +2 more | 2006-06-20 |
| 7002734 | Pre-amplifier gain setting method utilizing ASE light and WDM optical transmission apparatus employing the method | Kazunori Horachi, Nobuyuki Nemoto, Kazuo Tanaka | 2006-02-21 |
| 6977771 | Optical amplifier supervisory control method in WDM communication system | Nobuyuki Nemoto, Kazuo Tanaka, Kazunori Horachi | 2005-12-20 |
| 5627969 | Universal link configurator for physical link configurations in a data link node | Seiichi Kobayashi | 1997-05-06 |