Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4470832 | Gas chromatographic apparatus | Katuo Sugawara, Hideo Tsukioka, Etsuo Ohe, Etsunori Mori | 1984-09-11 |
| 4444040 | Method and apparatus for detecting gas components in oil in oil-filled device | Seiichi Sakai, Toshihiko Gange, Katuo Sugawara, Hideo Tsukioka, Shigeo Shiono +1 more | 1984-04-24 |