Issued Patents All Time
Showing 151–172 of 172 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6928828 | Tandem compressors with economized operation | Alexander Lifson, Thomas J. Dobmeier | 2005-08-16 |
| 6925822 | Oil return control in refrigerant system | Alexander Lifson, Thomas J. Dobmeier | 2005-08-09 |
| 6925823 | Refrigerant cycle with operating range extension | Alexander Lifson | 2005-08-09 |
| 6895781 | Multiple refrigerant circuits with single economizer heat exchanger | Thomas J. Dobmeier, Howard H. Fraser, Jr. | 2005-05-24 |
| 6892553 | Combined expansion device and four-way reversing valve in economized heat pumps | Alexander Lifson, Thomas J. Dobmeier | 2005-05-17 |
| 6873504 | System and method for detecting loss of phase in a compressor system | Alexander Lifson | 2005-03-29 |
| 6860116 | Performance enhancement of vapor compression systems with multiple circuits | Alexander Lifson, Howard H. Fraser, Jr. | 2005-03-01 |
| 6826918 | Refrigerant system performance enhancement by use of additional heat exchanger | Alexander Lifson, Howard H. Fraser, Jr. | 2004-12-07 |
| 6817205 | Dual reversing valves for economized heat pump | Alexander Lifson, Thomas J. Dobmeier | 2004-11-16 |
| 6799951 | Compressor degradation detection system | Alexander Lifson, Howard H. Fraser, Jr. | 2004-10-05 |
| 6705093 | Humidity control method and scheme for vapor compression system with multiple circuits | Thomas J. Dobmeier | 2004-03-16 |
| 6701723 | Humidity control and efficiency enhancement in vapor compression system | Thomas J. Dobmeier, Ruddy C. Bussjager | 2004-03-09 |
| 6694756 | System and method for multi-stage dehumidification | Thomas J. Dobmeier | 2004-02-24 |
| 6672087 | Humidity and temperature control in vapor compression system | Thomas J. Dobmeier | 2004-01-06 |
| 6658867 | Performance enhancement of vapor compression system | Alexander Lifson, Thomas J. Dobmeier, Howard H. Fraser, Jr. | 2003-12-09 |
| 6571576 | Injection of liquid and vapor refrigerant through economizer ports | Alexander Lifson, James W. Bush, Howard H. Fraser, Jr., Russell G. Lewis | 2003-06-03 |
| 6171380 | Microprocessor cooler with integral acoustic attenuator | Richard Wood, Philip Lewis Lavrich, Patrick C. Marks, Walter E. Lare, Jr. | 2001-01-09 |
| 6112534 | Refrigeration and heating cycle system and method | John R. Reason, Russell G. Lewis | 2000-09-05 |
| 6058727 | Refrigeration system with integrated oil cooling heat exchanger | Howard H. Fraser, Jr., Russell G. Lewis | 2000-05-09 |
| 6023938 | Refrigeration or air conditioning unit with noise reducing grille | Walter E. Lare, Jr., Patrick C. Marks, Richard Wood | 2000-02-15 |
| D412566 | Grille for a refrigeration or air conditioning unit | Walter E. Lare, Jr., Patrick C. Marks, Richard Wood | 1999-08-03 |
| 5899091 | Refrigeration system with integrated economizer/oil cooler | Howard H. Fraser, Jr., Russell G. Lewis | 1999-05-04 |