| 9964212 | Wear resistant insert for pneumatic scotch yoke piston | Jul 08, 15 | May 08, 18 | Hamilton Sundstrand Corporation |
| 9822877 | Lightweight compressor piston with opening | Sep 16, 13 | Nov 21, 17 | ARIEL CORPORATION |
| 9551291 | Steel piston with fourth land guidance and improved friction characteristics | Jan 28, 14 | Jan 24, 17 | MAHLE INTERNATIONAL GMBH |
| 9500281 | Fluid pressure cylinder | Nov 29, 13 | Nov 22, 16 | SMC CORPORATION |
| 9482342 | Radially deflectable piston bushings | May 21, 13 | Nov 01, 16 | SCHAEFFLER TECHNOLOGIES AG & CO. KG |
| 9476454 | Sliding element | Dec 28, 09 | Oct 25, 16 | FEDERAL-MOGUL WIESBADEN GMBH |
| 9157500 | Gas cylinder actuator with safety system for controlled ejection of the piston stem | Apr 15, 10 | Oct 13, 15 | SPECIAL SPRINGS S.R.L. |
| 8985009 | Sliding element with exposed functional surface | Jan 25, 10 | Mar 24, 15 | FEDERAL-MOGUL BURSCHEID GMBH |
| 8277952 | Sliding member for compressor | Dec 18, 09 | Oct 02, 12 | KABUSHIKI KAISHA TOYOTA JIDOSHOKKI |
| 7938058 | Engine piston with rolling element skirt | Apr 16, 08 | May 10, 11 | GM GLOBAL TECHNOLOGY OPERATIONS LLC |
| 7861643 | Piston device | Mar 07, 08 | Jan 04, 11 | UNIPOINT ELECTRIC MFG. CO., LTD. |
| 7284526 | Ellipsoid roller bearing piston ring | Jun 05, 06 | Oct 23, 07 | Not available |
| 5893318 | Ball bearing piston and liner | Apr 03, 96 | Apr 13, 99 | Not available |
| 5836235 | Piston for hydraulic actuating cylinders | Mar 27, 97 | Nov 17, 98 | FTE BETEILIGUNGS GMBH |
| 5615600 | Roller bearing piston | Aug 17, 95 | Apr 01, 97 | Not available |
| 5437220 | Ball bearing piston | May 24, 94 | Aug 01, 95 | Not available |
| 5265565 | Reciprocating engine | Mar 13, 92 | Nov 30, 93 | Bando Kiko Co., Ltd. |
| 4843952 | Low-height articulated piston with skirt-overhanging guide portions on head | Aug 04, 87 | Jul 04, 89 | MAHLE INTERNATIONAL GMBH |
| 4831918 | Light alloy pistons with reinforcing inserts for the piston pin bores | Nov 16, 87 | May 23, 89 | Kolbenschmidt Aktiengesellschaft |
| 4831919 | Asymmetric oval piston with higher convexity thrust face | Jul 07, 86 | May 23, 89 | AE PLC |