DR

David M. Rockwell

CA Carrier: 18 patents #64 of 2,507Top 3%
IBM: 5 patents #18,733 of 70,183Top 30%
Overall (All Time): #179,477 of 4,157,543Top 5%
23
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
12385491 Direct drive refrigerant screw compressor with refrigerant lubricated rotors Yifan Qiu, Amit Vaidya, Ulf J. Jonsson, Zaffir A. Chaudhry 2025-08-12
12055143 Screw compressor with adjustable passage David Okhman, Amit Vaidya, Yifan Qiu, Brandon Schwoeppe, Joshua S. Lavoie 2024-08-06
11959484 Direct drive refrigerant screw compressor with refrigerant lubricated bearings Yifan Qiu, Amit Vaidya 2024-04-16
11959673 Enhanced method of lubrication for refrigeration compressors Jeremy Wallet-Laily, Ulf J. Jonsson, Charbel Rahhal, Nicolas Fonte, Zaffir A. Chaudhry +4 more 2024-04-16
11898561 Direct drive refrigerant screw compressor with refrigerant lubricated rotors Yifan Qiu, Amit Vaidya, Ulf J. Jonsson, Zaffir A. Chaudhry 2024-02-13
11808264 Multi-stage resonator for compressor Ramons A. Reba, Duane C. McCormick, Mark W. Wilson 2023-11-07
10941776 Screw compressor resonator arrays Ramons A. Reba, Arthur Blanc, Duane C. McCormick, Mark W. Wilson, Benjamin J. Blechman 2021-03-09
10830239 Refrigeration compressor fittings Scott M. MacBain, Benjamin J. Blechman 2020-11-10
10808969 Screw compressor economizer plenum for pulsation reduction Amit Vaidya, Peter J. Pileski 2020-10-20
10408508 Oil recovery for refrigeration system Aaron Ronk, Nadine Thompson 2019-09-10
10260783 Chiller compressor oil conditioning Scott M. MacBain, Ulf J. Jonsson 2019-04-16
8397531 Apparatus and method for pulsation and sound reduction in an economized refrigeration system 2013-03-19
7993112 Compressor sound suppression 2011-08-09
7802974 Screw compressor having asymmetric seal around rotor axis Frederick L. Miller, Jr., Yan Tang 2010-09-28
7121814 Compressor sound suppression Lee G. Tetu 2006-10-17
6787427 Method to fabricate SiGe HBTs with controlled current gain and improved breakdown voltage characteristics David R. Greenberg, Basanth Jagannathan, Shwu-Jen Jeng, Joseph T. Kocis, Samuel C. Ramac 2004-09-07
6749684 Method for improving CVD film quality utilizing polysilicon getterer Huajie Chen, Dan M. Mocuta, Richard J. Murphy, Paul A. Ronsheim 2004-06-15
6701779 Perpendicular torsion micro-electromechanical switch Richard P. Volant, Robert A. Groves, Kevin S. Petrarca, Kenneth J. Stein 2004-03-09
6656809 Method to fabricate SiGe HBTs with controlled current gain and improved breakdown voltage characteristics David R. Greenberg, Basanth Jagannathan, Shwu-Jen Jeng, Joseph T. Kocis, Samuel C. Ramac 2003-12-02
6368484 Selective plating process Richard P. Volant, Peter S. Locke, Kevin S. Petrarca, Seshadri Subbanna 2002-04-09
6363735 Air conditioner condenser orifice member having condensate suction port Peter R. Bushnell, Nestor Hernandez 2002-04-02
6067812 Condenser fan with condensate slinger Peter R. Bushnell 2000-05-30
5951247 Discharge vanes for axial fans Sau-Tak R. Chou 1999-09-14