Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5654047 | Explosion-proof porcelain housings for gas-filled insulating apparatuses and process for producing such porcelain housings | Akihiro Watanabe, Keiichi Asai, Nagahiro Kawano, Masafumi Sugi | 1997-08-05 |
| 5234713 | Method of lining resins on an inner surface of a tapered porcelain housing | Akihiro Watanabe, Keiichi Asai, Nagahiro Kawano, Masafumi Sugi | 1993-08-10 |
| 5011717 | Explosion preventing porcelain hollow insulator | Tsutomu Moriya, Takao Nakamura | 1991-04-30 |