Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5990440 | Switch and arc extinguishing material for use therein | Shoji Yamaguchi, Itsuo Nishiyama, Fumiaki Baba, Takao Mitsuhashi, Kazuharu Kato +7 more | 1999-11-23 |
| 5841088 | Switch and arc extinguishing material for use therein | Shoji Yamaguchi, Itsuo Nishiyama, Fumiaki Baba, Takao Mitsuhashi, Kazuharu Kato +7 more | 1998-11-24 |