Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5985000 | Method for manufacturing electrode material for vacuum circuit breaker | Hisaji Shinohara, Katsuro Shiozaki, Kazuro Shibata, Masayuki Furusawa, Shunichi Hatakeyama +2 more | 1999-11-16 |
| 4866393 | Method of diagnosing the deterioration of a zinc oxide type lightning arrester utilizing vector synthesis | Masatoshi Nakajima, Hiroshi Asaga, Nobuyuki Takao, Satoru Shiga, Yoshihiro Tanabe | 1989-09-12 |