| 2025/0092,950 | PISTON-CYLINDER UNIT, METHOD FOR PRODUCING THE PISTON-CYLINDER UNIT | Jan 03, 23 | Mar 20, 25 | Not available |
| 2024/0288,072 | Slotted guide ring with recirculating lubrication and piston-cylinder unit | May 15, 24 | Aug 29, 24 | Trelleborg Sealing Solutions Germany GmbH |
| 2024/0175,493 | TUBE IN TUBE LUBRICATION FOR A GAS CYLINDER | Mar 25, 22 | May 30, 24 | Not available |
| 2023/0145,204 | PISTON WITH OIL RETURN PASSAGE AND ENGINE | Nov 08, 22 | May 11, 23 | Not available |
| 2023/0067,611 | PISTON FOR AN INTERNAL COMBUSTION ENGINE | Dec 16, 20 | Mar 02, 23 | Caterpillar Motoren GmbH & Co. KG |
| 2023/0034,137 | PISTON AND RECIPROCATING COMPRESSOR | Jun 13, 22 | Feb 02, 23 | Kabushiki Kaisha Kobe Seiko Sho ( Kobe Steel Ltd.) |
| 2022/0112,952 | LUBRICATING MECHANISM OF PIN CONNECTION PAIR OF INTERNAL COMBUSTION ENGINE | Sep 21, 21 | Apr 14, 22 | Not available |
| 2022/0003,315 | Piston and Cylinder of an Internal Combustion Engine | Sep 19, 19 | Jan 06, 22 | Not available |
| 2021/0254,712 | LUBRICATION SYSTEM FOR A PISTON PUMP | Feb 13, 20 | Aug 19, 21 | Not available |
| 2021/0062,916 | PISTON ASSEMBLY FOR AN INTERNAL COMBUSTION ENGINE OF A MOTOR VEHICLE | Aug 29, 19 | Mar 04, 21 | Not available |
| 2020/0370,648 | HYDRAULIC PISTON ASSEMBLY | May 23, 19 | Nov 26, 20 | Schaeffler Technologies AG & Co. KG |
| 2020/0132,193 | PISTON OF AN INTERNAL COMBUSTION ENGINE | Sep 04, 19 | Apr 30, 20 | Not available |
| 2019/0170,063 | OPPOSED-PISTON COMPACT ENGINE WITH CRANKSHAFTS ROTATING ON A DIFFERENT PLANT TO THOSE OF THE CYLINDER AXES | May 27, 16 | Jun 06, 19 | Not available |
| 2019/0154,150 | ACTUATOR ASSEMBLY HAVING SELF-LUBRICATING COMPONENTS | Oct 19, 18 | May 23, 19 | Not available |
| 2019/0072,181 | HYDRAULIC PISTON WITH COOLING AND LUBRICATION VALVE | Aug 29, 18 | Mar 07, 19 | Not available |
| 2019/0063,604 | PISTON FOR INTERNAL COMBUSTION ENGINE | Mar 30, 16 | Feb 28, 19 | Not available |
| 2016/0017,997 | SELF-CENTERING SERVO PISTON | Jul 17, 14 | Jan 21, 16 | DANFOSS POWER SOLUTIONS INC. |
| 2015/0240,943 | REDUCED FRICTION OIL CONTROL PISTON RINGS | Sep 24, 13 | Aug 27, 15 | Not available |
| 2015/0068,395 | AXIAL PISTON DEVICE | Sep 05, 14 | Mar 12, 15 | KANZAKI KOKYUKOKI MFG. CO., LTD. |
| 2015/0007,717 | STEEL PISTON HAVING COOLING CHANNEL WITHOUT FLASH | Dec 31, 13 | Jan 08, 15 | DONG YANG PISTON CO., LTD. |