Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4812262 | Fire-retardant electric device | Yoshiki Kohno | 1989-03-14 |
| 4566994 | Flame-retardant electrical insulating oil composition | Hiroshi Hasegawa, Yoshiki Kohno | 1986-01-28 |