Issued Patents All Time
Showing 25 most recent of 35 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12385491 | Direct drive refrigerant screw compressor with refrigerant lubricated rotors | Yifan Qiu, Amit Vaidya, Zaffir A. Chaudhry, David M. Rockwell | 2025-08-12 |
| 11959673 | Enhanced method of lubrication for refrigeration compressors | Jeremy Wallet-Laily, Charbel Rahhal, Nicolas Fonte, Zaffir A. Chaudhry, David M. Rockwell +4 more | 2024-04-16 |
| 11898561 | Direct drive refrigerant screw compressor with refrigerant lubricated rotors | Yifan Qiu, Amit Vaidya, Zaffir A. Chaudhry, David M. Rockwell | 2024-02-13 |
| 11662263 | Pressure sensor for preventing fluid jetting | David P. Potasek | 2023-05-30 |
| 11292987 | Active filter for oil-free refrigerant compressor | Zissis A. Dardas, Ying She, Zaffir A. Chaudhry, Vishnu M. Sishtla | 2022-04-05 |
| 11181008 | Self-pressurized squeeze film damper | Daniel L. Gysling, Philip Andrew Varney, Andrzej Ernest Kuczek | 2021-11-23 |
| 11174988 | Lubricant level sensing for an actuator | Claude G. Matalanis, John D. Cannata, Brian E. Wake | 2021-11-16 |
| 10920615 | Self pressurizing squeeze film damper | Daniel L. Gysling | 2021-02-16 |
| 10823467 | Low-oil refrigerants and vapor compression systems | Zissis A. Dardas, Vishnu M. Sishtla, Daniel G. Goberman, Zaffir A. Chaudhry, Xia Tang +1 more | 2020-11-03 |
| 10781857 | Hybrid bearings | Vishnu M. Sishtla, Zaffir A. Chaudhry | 2020-09-22 |
| 10648702 | Low capacity, low-GWP, HVAC system | Parmesh Verma, Frederick J. Cogswell, William T. Cousins, Vishnu M. Sishtla, Larry D. Burns | 2020-05-12 |
| 10641529 | Heat transfer system with tribofilm on bearing surface | Susanne M. Opalka, Xia Tang, Daniel G. Goberman, Zaffir A. Chaudhry | 2020-05-05 |
| 10571074 | Lubricant level sensing for an actuator | Claude G. Matalanis, John D. Cannata, Brian E. Wake | 2020-02-25 |
| 10539352 | Compressor bearing cooling via purge unit | Vishnu M. Sishtla, Zaffir A. Chaudhry | 2020-01-21 |
| 10495143 | Self pressurizing squeeze film damper | Daniel L. Gysling, Philip Andrew Varney | 2019-12-03 |
| 10480831 | Compressor bearing cooling | Vishnu M. Sishtla, Zaffir A. Chaudhry | 2019-11-19 |
| 10260783 | Chiller compressor oil conditioning | Scott M. MacBain, David M. Rockwell | 2019-04-16 |
| 10228168 | Compressor bearing cooling | Vishnu M. Sishtla, Zaffir A. Chaudhry | 2019-03-12 |
| 10114938 | Secure electronic lock | Alan Marchiori, Vijaya Ramaraju Lakamraju, Nicholas Charles Soldner, Ritesh Khire, Joseph Zacchio +2 more | 2018-10-30 |
| 9907986 | Fire suppression system with dual use of gas source | Bryan Robert Siewert, Mike Lindsay | 2018-03-06 |
| 9708832 | Lock core with recessed pop out knob | Lawrence A. Binek, Ritesh Khire, Andrzej Ernest Kuczek, Vijaya Ramaraju Lakamraju, Adam Kuenzi +2 more | 2017-07-18 |
| 9407121 | Electromechanical rotary actuator and method | Claude G. Matalanis, Andrzej Ernest Kuczek, Brian E. Wake, Zaffir A. Chaudhry, Paul Brewer | 2016-08-02 |
| 9278755 | Modular integrated device for rotor blade control | Claude G. Matalanis, Andrzej Ernest Kuczek, Zaffir A. Chaudhry, Brian E. Wake, Vijaya Ramaraju Lakamraju +2 more | 2016-03-08 |
| 9234522 | Hybrid bearing turbomachine | Bruce P. Biederman, Frederick J. Cogswell | 2016-01-12 |
| 9217264 | Low energy clutch for electronic door lock | John M. Milton-Benoit, Robert H. Dold, Fanping Sun, Zaffir A. Chaudhry | 2015-12-22 |