Issued Patents All Time
Showing 26–27 of 27 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6261474 | Lubricating oil for compression-type refrigerators containing pentafluoroethane and a polyvinyl ether | Tatsuya Egawa, Hirotaka Yamasaki, Kenji Mogami, Toyokazu Handa, Masato Kaneko | 2001-07-17 |
| 6248256 | Lubricating oil composition for refrigerators and method for lubrication with the composition | Toyokazu Handa | 2001-06-19 |