Issued Patents 2017
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9653239 | Wear-resistant material, method for producing the same, puffer cylinder and puffer-type gas circuit breaker | Masahiko Ono, Makoto Hirose, Hisashi Urasaki | 2017-05-16 |
| 9604881 | Wear-resistant material, puffer cylinder, and puffer-type gas circuit breaker | Masahiko Ono, Makoto Hirose, Hisashi Urasaki | 2017-03-28 |