Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4935135 | Oil filter | Yuzuru Nakashima | 1990-06-19 |
| 4595812 | Circuit interrupter with detachable optional accessories | Shigemi Tamaru | 1986-06-17 |
| 4559423 | Circuit interrupter | Shinji Yamagata, Shigemi Tamaru, Hiroshi Fujii, Hideo Suhara, Fumiyuki Hisatsune +1 more | 1985-12-17 |
| 4459445 | Circuit breaker | Fumiyuki Hisatsune, Shinji Yamagata, Junichi Terachi, Hajimu Yoshiyasu | 1984-07-10 |
| 4454395 | Circuit breaker | Shinji Yamagata, Fumiyuki Hisatsune, Junichi Terachi, Hajimu Yoshiyasu, Yuichi Wada | 1984-06-12 |
| 4451718 | Circuit breaker | Shinji Yamagata, Fumiyuki Hisatsune, Junichi Terachi, Hajimu Yoshiyasu, Yuichi Wada | 1984-05-29 |