Issued Patents 2002
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6410492 | Mixed esters of pentaerythritol for refrigeration base oils | Hiroyuki Hirano | 2002-06-25 |
| 6355186 | Refrigerating machine oil composition | Satoshi Suda, Hiroyuki Hirano | 2002-03-12 |