Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6692654 | Refrigerating machine oil | Hiroyuki Hirano, Yasuyuki Watanabe | 2004-02-17 |
| 5549838 | Hydraulic working oil composition for buffers | Toru Miyagawa, Mitsuo Okada | 1996-08-27 |