Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11635239 | Refrigeration system with purge and acid filter | Daoud A. Jandal, Stephen A. Kujak, Raymond S. Schafer, Paul Edmond Cieslinski | 2023-04-25 |
| 11085680 | Lubricant blends to reduce refrigerant solubility | Daniel A. Strange, Daryl Dean STEINKE | 2021-08-10 |
| 11073315 | Refrigeration system with purge and acid filter | Daoud A. Jandal, Stephen A. Kujak, Raymond S. Schafer, Paul Edmond Cieslinski | 2021-07-27 |
| 10969148 | System and method for detecting refrigerant contamination in an HVACR system | Stephen A. Kujak, Randal Newton, Kenneth J. Schultz | 2021-04-06 |
| 10739270 | Rapid field testing method for detecting lubricant or refrigerant additives | Steven Staats, Ellis Johnson | 2020-08-11 |
| 10612825 | Lubricant blends to reduce refrigerant solubility | Daniel A. Strange, Daryl Dean STEINKE | 2020-04-07 |
| 10190808 | Refrigeration system with purge and acid filter | Daoud A. Jandal, Stephen A. Kujak, Raymond S. Schafer, Paul Edmond Cieslinski | 2019-01-29 |