Issued Patents 2011
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8083965 | Refrigerating machine oil | Katsuya Takigawa | 2011-12-27 |
| 7993543 | Refrigerating machine oil for carbon dioxide refrigerant | Ken Sawada, Yuji Shimomura, Katsuya Takigawa, Jiro Hashimoto, Masataka Negishi | 2011-08-09 |
| 7959824 | Refrigerating machine oil composition | Katsuya Takigawa | 2011-06-14 |
| 7867957 | Lubricating oil composition | Shigeki Matsui | 2011-01-11 |