Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6897760 | Circuit breaker | Hisao Kawata, Yoshimi Jumonji, Katsunori Kuboyama, Tatsunori Takahashi | 2005-05-24 |
| 6472971 | Circuit breaker | Kentaro Toyama, Naoshi Uchida, Koji Asakawa | 2002-10-29 |
| 5965874 | Method and apparatus for measuring the polarization characteristics of optical transmission medium | Osamu Aso, Haruki Ogoshi | 1999-10-12 |