Issued Patents All Time
Showing 126–150 of 172 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7163052 | Parallel flow evaporator with non-uniform characteristics | Allen C. Kirkwood, Robert A. Chopko | 2007-01-16 |
| 7155920 | Refrigerant cycle with tandem compressors and multiple condensers | Alexander Lifson | 2007-01-02 |
| 7152416 | Hot gas bypass through four-way reversing valve | Alexander Lifson | 2006-12-26 |
| 7137270 | Flash tank for heat pump in heating and cooling modes of operation | Alexander Lifson, Thomas J. Dobmeier | 2006-11-21 |
| 7131285 | Refrigerant cycle with plural condensers receiving refrigerant at different pressure | Alexander Lifson | 2006-11-07 |
| 7114348 | Fluid diode expansion device for heat pumps | Alexander Lifson, Thomas J. Dobmeier | 2006-10-03 |
| 7114349 | Refrigerant system with common economizer and liquid-suction heat exchanger | Alexander Lifson, Howard H. Fraser, Jr., Russell G. Lewis, André Georges Stumpf | 2006-10-03 |
| 7059151 | Refrigerant systems with reheat and economizer | Alexander Lifson | 2006-06-13 |
| 7043937 | Fluid diode expansion device for heat pumps | Alexander Lifson, Thomas J. Dobmcier | 2006-05-16 |
| 7028492 | Hybrid dehumidication system | Alexander Lifson | 2006-04-18 |
| 7013658 | Refrigerant subcooling by condensate | Thomas J. Dobmeier, Alexander Lifson | 2006-03-21 |
| 7010927 | Refrigerant system with controlled refrigerant charge amount | Alexander Lifson, Thomas J. Dobmeier | 2006-03-14 |
| 7000423 | Dual economizer heat exchangers for heat pump | Alexander Lifson, Thomas J. Dobmeier | 2006-02-21 |
| 6996998 | Refrigerant system pressure control for storage and transportation | Alexander Lifson, Thomas J. Dobmeier | 2006-02-14 |
| 6990826 | Single expansion device for use in a heat pump | Alexander Lifson | 2006-01-31 |
| 6986264 | Economized dehumidification system | Alexander Lifson | 2006-01-17 |
| 6981384 | Monitoring refrigerant charge | Thomas J. Dobmeier, Alexander Lifson | 2006-01-03 |
| 6966193 | Control of multi-circuit economized system | Thomas J. Dobmeier, Alexander Lifson | 2005-11-22 |
| 6966192 | Tandem compressors with discharge valve on connecting lines | Alexander Lifson | 2005-11-22 |
| 6964173 | Expansion device with low refrigerant charge monitoring | Thomas J. Dobmeier, Alexander Lifson | 2005-11-15 |
| 6955057 | Control scheme and method for dehumidification systems at low ambient conditions | Thomas J. Dobmeier, Ruddy C. Bussjager | 2005-10-18 |
| 6955058 | Refrigerant cycle with tandem economized and conventional compressors | Alexander Lifson, Thomas J. Dobmeier | 2005-10-18 |
| 6955059 | Vapor compression system | Alexander Lifson, Howard H. Fraser, Jr. | 2005-10-18 |
| 6941770 | Hybrid reheat system with performance enhancement | Alexander Lifson | 2005-09-13 |
| 6938438 | Vapor compression system with bypass/economizer circuits | Alexander Lifson | 2005-09-06 |