| 2024/0003,255 | ROTOR UNIT ASSEMBLY | Nov 03, 21 | Jan 04, 24 | Bae Systems PLC |
| 2020/0400,022 | ROTARY PISTON ENGINE AND METHOD FOR OPERATING A ROTARY PISTON ENGINE | Feb 08, 19 | Dec 24, 20 | Not available |
| 2019/0078,438 | POSITIVE DISPLACEMENT ROTARY DEVICES | Nov 13, 18 | Mar 14, 19 | MALLEN RESEARCH LIMITED PARTNERSHIP |
| 2018/0258,818 | EXHAUST-GAS ENERGY RECOVERY SYSTEM AND METHOD FOR EXHAUST-GAS ENERGY RECOVERY | Sep 14, 16 | Sep 13, 18 | Not available |
| 2018/0258,768 | ROTARY PISTON ENGINE AND METHOD FOR OPERATING A ROTARY PISTON ENGINE | Sep 16, 16 | Sep 13, 18 | Not available |
| 2017/0298,733 | COMPOSITE MOLDED ROTARY COMPONENT | Sep 25, 15 | Oct 19, 17 | EATON CORPORATION |
| 2017/0226,856 | POSITIVE DISPLACEMENT ROTARY DEVICES | Apr 26, 17 | Aug 10, 17 | Not available |
| 2017/0159,438 | ROTARY SYNCHRONIZED COMBUSTION ENGINE | Apr 19, 15 | Jun 08, 17 | Not available |
| 2016/0265,358 | PUMP DEVICE AND SHIP PROPULSION MACHINE | Sep 25, 15 | Sep 15, 16 | SHOWA CORPORATION |
| 2015/0377,025 | ROTARY PISTON ENGINE | Feb 07, 14 | Dec 31, 15 | BRANDS & PRODUCTS IPR-HOLDING GMBH & CO. KG, RB HOLDING GMBH, |
| 2015/0308,272 | ROTARY PISTON ENGINE, IN PARTICULAR WITH ROTARY PISTONS CIRCULATING ABOUT THE IGNITION CHAMBER | Aug 02, 12 | Oct 29, 15 | BRANDS & PRODUCTS IPR-HOLDING GMBH & CO. KG, RB HOLDING GMBH, |
| 2015/0167,464 | POSITIVE DISPLACEMENT ROTARY DEVICES | Jan 13, 15 | Jun 18, 15 | MALLEN RESEARCH LIMITED PARTNERSHIP |
| 2013/0209,306 | Rotary Positive Displacement Machine | Aug 19, 11 | Aug 15, 13 | Not available |
| 2012/0269,669 | ROTORS FORMED USING INVOLUTE CURVES | Apr 20, 12 | Oct 25, 12 | EXPONENTIAL TECHNOLOGIES, INC. |
| 2012/0251,374 | MULTIPLE ROTOR FLUID TRANSFER ENGINE | Jun 12, 12 | Oct 04, 12 | Gyroton Corporation |
| 2012/0003,113 | SCREW COMPRESSOR | Mar 15, 10 | Jan 05, 12 | DAIKIN INDUSTRIES, LTD. |
| 2010/0122,685 | Spherical two stroke engine system | Nov 20, 08 | May 20, 10 | WARSAW UNIVERSITY OF LIFE SCIENCES (PARTIAL INTEREST) |
| 2009/0123,316 | Gear pump | Jan 13, 09 | May 14, 09 | Not available |
| 2009/0098,003 | MULTIPHASE SCREW PUMP | Oct 11, 07 | Apr 16, 09 | GENERAL ELECTRIC COMPANY |
| 2009/0068,050 | RADIAL AXIS, SPHERICAL BASED ROTARY MACHINES | Sep 09, 08 | Mar 12, 09 | Searchmont LLC. |