Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5856902 | Earth leakage breaker | Takashi Hashimoto, Shoji Sasaki, Katsumi Watanabe | 1999-01-05 |
| 5175780 | Optical fiber switch | Yasukazu Sano, Hideyuki Tanaka, Keijirou Nakamura, Hideo Kume | 1992-12-29 |
| 5134304 | Light projecting circuit in a photoelectric switch | Ken-Ichi Sakanoue | 1992-07-28 |
| 5075542 | Photoelectric switch using pulse width discrimination | — | 1991-12-24 |
| 4757341 | AC contactless switch | — | 1988-07-12 |