Issued Patents 2003
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6568195 | Ammonia refrigerating apparatus | Hitoshi Takahashi, Masato Namiki, Goro Yamamoto | 2003-05-27 |
| 6548457 | Lubricant for refrigerating machine employing ammonia refrigerant | Hitoshi Takahashi | 2003-04-15 |