Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4511957 | Power converter | Susumu Matsumura | 1985-04-16 |
| 4507701 | Lighting arrester with leakage current detection | Yukio Fujiwara, Seiji Sonoyama | 1985-03-26 |
| 4308566 | Lightning arrester device for power transmission line | Kazuo Sakamoto | 1981-12-29 |
| 4227229 | Lightning arrester device | — | 1980-10-07 |
| 4204239 | Abnormal voltage protection device | Mikio Mochizuki, Yoshikazu Shibuya | 1980-05-20 |
| 4203143 | Protective device | Katsu Ujita, Tsutomu Egashira | 1980-05-13 |