| 9963968 | Timed gas exchange in engine using piston as exhaust valve | Jul 14, 16 | May 08, 18 | Aquarius Engines (A.M.) Ltd. |
| 9963969 | Piston assembly for internal combustion engine | Jul 14, 16 | May 08, 18 | Aquarius Engines (A.M.) Ltd. |
| 9958069 | Piston unit of a working cylinder | Sep 19, 13 | May 01, 18 | Buemach Engineering International B.V. |
| 9945480 | Piston assembly including a polymer coating with hard particles applied to sliding surfaces | Oct 26, 12 | Apr 17, 18 | Federal-Mogul LLC |
| 9920835 | Piston device and pressure regulator using same | Jan 24, 14 | Mar 20, 18 | EMERSON PROCESS MANAGEMENT REGULATOR TECHNOLOGIES, INC. |
| 9890773 | Wobble piston having angled compression ring and spherical piston cap | Jun 09, 15 | Feb 13, 18 | MAT INDUSTRIES, LLC |
| 9873506 | Composite actuator rod end assembly | Mar 20, 15 | Jan 23, 18 | GOODRICH CORPORATION |
| 9869179 | Engine with piston that overshoots cylinder wall exhaust port | Jul 14, 16 | Jan 16, 18 | Aquarius Engines (A.M.) Ltd. |
| 9869267 | Reciprocating piston for a reciprocating piston engine and reciprocating piston engine, and cylinder of a reciprocating piston engine | Nov 14, 11 | Jan 16, 18 | Geist, Bertwin R. |
| 9845680 | Gas exchange through engine piston rod | Jul 14, 16 | Dec 19, 17 | Aquarius Engines (A.M.) Ltd. |
| 9822620 | Pumping system with plunger having a shaped edge and coating | Mar 25, 14 | Nov 21, 17 | MUTH PUMP LLC |
| 9822877 | Lightweight compressor piston with opening | Sep 16, 13 | Nov 21, 17 | ARIEL CORPORATION |
| 9810322 | Piston unit of a working cylinder | Sep 19, 13 | Nov 07, 17 | BUEMACH ENGINEERING INTERNATIONAL B.V. |
| 9778015 | Piston-cylinder unit with evaluation unit for determining the piston position | Oct 31, 14 | Oct 03, 17 | LIEBHERR-ELEKTRONIK GMBH |
| 9765800 | Piston assembly, fluid pressure cylinder, method for manufacturing piston assembly | May 22, 12 | Sep 19, 17 | SMC KABUSHIKI KAISHA |
| 9745837 | Velocity pumping system | Oct 22, 14 | Aug 29, 17 | MUTH PUMP LLC |
| 9707995 | Piston assembly | Sep 02, 15 | Jul 18, 17 | TICBAR PTY LTD |
| 9689259 | Engine with compression and momentum stroke | Jul 14, 16 | Jun 27, 17 | Aquarius Engines (A.A.) Ltd. |
| 9651151 | Double-effect hydraulic actuating cylinder | Sep 12, 14 | May 16, 17 | ULTRAFLEX S.P.A. |
| 9599221 | Connecting rod/piston arrangement for alternative compressor and process for assembling connecting rod/piston arrangement for alternative compressor | Jun 21, 12 | Mar 21, 17 | WHIRLPOOL S.A. |