Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5912792 | Mounting construction of a tank-type lightning arrester for a neutral point of a transformer | Shingo Shirakawa, Makoto Matsuzaki | 1999-06-15 |
| 4675773 | Transmission line protection system | Shingo Shirakawa, Seiichi Maruyama, Seizo Nakano, Kenji Kohara | 1987-06-23 |