| 2017/0198,582 | WELL SITE PUMP WITH INTEGRATED DRIVER AND HYDRAULIC MOTOR AND METHOD OF USING SAME | May 15, 15 | Jul 13, 17 | NATIONAL OILWELL VARCO, L.P. |
| 2014/0178,237 | HEAT ENGINE WITH LINEAR ACTUATORS | Feb 28, 14 | Jun 26, 14 | Not available |
| 2013/0064,702 | Downhole Motors and Pumps with Asymmetric Lobes | Sep 08, 11 | Mar 14, 13 | BAKER HUGHES INCORPORATED |
| 2012/0177,520 | REVERSIBLE GEROTOR PUMP | Dec 01, 11 | Jul 12, 12 | GM GLOBAL TECHNOLOGY OPERATIONS LLC |
| 2012/0003,112 | UNIAXIAL ECCENTRIC SCREW PUMP | Mar 04, 10 | Jan 05, 12 | Furukawa Industrial Machinery Systems Co., Ltd. |
| 2011/0243,774 | UNDERCUT STATOR FOR A POSITIVE DISPLACMENT MOTOR | Mar 30, 10 | Oct 06, 11 | SMITH INTERNATIONAL, INC. |
| 2011/0116,960 | STATOR INSERTS, METHODS OF FABRICATING THE SAME, AND DOWNHOLE MOTORS INCORPORATING THE SAME | Nov 13, 09 | May 19, 11 | SCHLUMBERGER TECHNOLOGY CORPORATION |
| 2011/0116,961 | STATORS FOR DOWNHOLE MOTORS, METHODS FOR FABRICATING THE SAME, AND DOWNHOLE MOTORS INCORPORATING THE SAME | Nov 13, 09 | May 19, 11 | SCHLUMBERGER TECHNOLOGY CORPORATION |
| 2010/0322,808 | Progressing Cavity Pump/Motor | Jun 22, 09 | Dec 23, 10 | ROBBINS & MYERS ENERGY SYSTEMS L.P. |
| 2010/0189,585 | SCROLL COMPRESSOR | Jul 23, 08 | Jul 29, 10 | DAIKIN INDUSTRIES, LTD. |
| 2009/0152,009 | Nano particle reinforced polymer element for stator and rotor assembly | Dec 18, 07 | Jun 18, 09 | HALLIBURTON ENERGY SERVICES, INC. |
| 2008/0310,981 | POSITIVE DISPLACEMENT FLOW SEPARATOR | Jun 12, 07 | Dec 18, 08 | GENERAL ELECTRIC COMPANY |
| 2004/0062,669 | ECCENTRIC SCREW PUMP WITH EXPANDED TEMPERATURE RANGE | Oct 09, 02 | Apr 01, 04 | Wilhelm Kaechele GmbH Elastomertechnik |
| 2001/0005,486 | Progressive cavity helical device | Jan 18, 01 | Jun 28, 01 | BICO DRILLING TOOLS, INC. |