Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8187508 | Base agent for electrical insulating oil | Jun Yamada, Hidenobu Koide, Yasunori Hatta | 2012-05-29 |
| 7795193 | Base for electric insulating oil | Mitsuhiko Takei, Hidenobu Koide, Kiyoshi Fujii | 2010-09-14 |