Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7289696 | Optical switch device | Eiji Fujisawa, Toshifumi Tsuruta, Ryuji Kawamoto, Yuichi Suzuki | 2007-10-30 |
| 7236658 | Optical switch | Tomoki Uesugi, Kazuki Fukuda | 2007-06-26 |
| 7212721 | Variable optical attenuator | Kiyoshi Imai, Kazuki Fukuda, Hirokazu Tanaka, Tetsuya Onishi | 2007-05-01 |
| 7194153 | Optical switch device | Masao Yajima, Hidekazu Yoneyama, Sadayoshi Yasuda, Yuji Fujita, Ryuji Kawamoto +1 more | 2007-03-20 |
| 7095919 | Optical switch | Ryuji Kawamoto, Kazuki Fukuda, Hirokazu Tanaka, Tetsuya Onishi, Kiyoshi Imai +1 more | 2006-08-22 |
| 6107903 | Electromagnetic relay | Kazumi Sako, Ryutaro Tsuchiya, Yuichi Kariya | 2000-08-22 |
| 5440285 | Closed type electromagnetic relay | Ryuichi Sato, Kazumi Sako, Masayuki Noda, Ikuo Takegahara | 1995-08-08 |
| 5270674 | Electromagnetic relay | Ryuichi Sato, Hiroyuki Sagawa, Masayuki Noda, Mitsuhiro Kawai, Kazumi Sako | 1993-12-14 |
| 5015979 | Electromagnetic relay | Junichi Kanetani, Muneo Nakata | 1991-05-14 |