Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4502320 | Method and apparatus for diagnosing oil-filled electric apparatus | Seiichi Sakai, Toshihiko Gange, Hideo Tsukioka, Katuo Sugawara, Etsunori Mori +1 more | 1985-03-05 |
| 4402211 | System for monitoring abnormality of oil-filled electric devices | Katuo Sugawara, Etsuo Ohe, Hideo Tsukioka | 1983-09-06 |