Issued Patents 2011
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8079229 | Economized refrigerant vapor compression system for water heating | Alexander Lifson | 2011-12-20 |
| 8079228 | Refrigerant system with multi-speed scroll compressor and economizer circuit | Alexander Lifson | 2011-12-20 |
| RE42966 | Tandem compressors with discharge valve on connecting lines | Alexander Lifson | 2011-11-29 |
| 7997091 | Control scheme for multiple operating parameters in economized refrigerant system | Alexander Lifson, Thomas J. Dobmeier | 2011-08-16 |
| 7997092 | Refrigerant vapor compression system operating at or near zero load | Alexander Lifson | 2011-08-16 |
| 7966838 | Suction modulation valve for refrigerant system with adjustable opening for pulse width modulation control | Alexander Lifson | 2011-06-28 |
| 7958737 | Method and control for preventing flooded starts in a heat pump | Alexander Lifson | 2011-06-14 |
| 7931073 | Heat exchanger with fluid expansion in header | Mikhail B. Gorbounov, Parmesh Verma, Robert A. Chopko, Allen C. Kirkwood | 2011-04-26 |
| 7921661 | Dehumidification system with multiple condensers and compound compressor | Alexander Lifson | 2011-04-12 |