Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9800331 | Optical transmission apparatus and level adjusting method | Yuichi Toyota, Akihiro Mukai, Daisuke Kobayashi, Haruki Tanaka | 2017-10-24 |
| 8195052 | Optical wavelength multiplexing system, optical wavelength multiplexing method, and computer product | Makoto Ohtou, Akira Yamamoto, Katsumi Sugawa, Hideaki Sugiya | 2012-06-05 |
| 8189180 | Optical fiber transmission line measurement apparatus and system | Koji Bato, Taro Asao, Yoshinori Tochiki, Haruka Miyazaki, Akira Yamamoto +2 more | 2012-05-29 |
| 7733467 | Optical passive device product identification apparatus and connectivity determination apparatus | Akira Yamamoto, Katsumi Sugawa, Makoto Ohtou, Takuji Maeda | 2010-06-08 |
| 7630644 | Optical add/drop multiplexer, control method therefor and control program therefor | Akira Yamamoto, Haruki Tanaka, Tomoyuki Sakata, Taro Asao | 2009-12-08 |
| 7509055 | Optical transmission system with automatic signal level adjustment and startup functions | Hiroaki Tomofuji, Takuji Maeda, Taizo Maeda, Hideki Kobayashi, Tetsuo Wada | 2009-03-24 |
| 7343102 | Optical transmission system with automatic signal level adjustment and startup functions | Hiroaki Tomofuji, Takuji Maeda, Taizo Maeda, Hideki Kobayashi, Tetsuo Wada | 2008-03-11 |
| 6868200 | Wavelength division multiplexing optical transmission apparatus | Koichi Kimotsuki, Kazunori Hayami, Takanori Maki | 2005-03-15 |
| 4385473 | Method for frequency regulation of tuning-fork vibrator | Shigeo Aoki, Shuzo Isogami, Junichi Tamamura, Masaru Yasui, Susumu Hirao | 1983-05-31 |
| 4382659 | Liquid crystal display device | Shigeo Aoki, Shuzo Isogami, Motomi Hosoda, Yasuhiro Ukai | 1983-05-10 |