| 2022/0389,855 | COMPACT PISTON VALVE | Nov 13, 20 | Dec 08, 22 | Not available |
| 2021/0108,553 | COOLING APPARATUS OF PISTON AND CONTROL METHOD THEREOF | Jul 09, 20 | Apr 15, 21 | Not available |
| 2021/0102,511 | Internal-Combustion Engine Piston and Method for Controlling Cooling of Internal-Combustion Engine Piston | Apr 12, 18 | Apr 08, 21 | Not available |
| 2021/0033,019 | PISTON COOLING JET SYSTEM | Aug 02, 19 | Feb 04, 21 | Not available |
| 2020/0318,526 | MARINE OUTBOARD MOTOR WITH PISTON COOLING GALLERY | Mar 24, 20 | Oct 08, 20 | Not available |
| 2020/0165,957 | OIL SUPPLY ELEMENT AND PISTON OF AN INTERNAL COMBUSTION ENGINE | Nov 21, 19 | May 28, 20 | Not available |
| 2019/0107,033 | VALVE FOR ADJUSTING A COOLING FLUID FLOW FOR PISTON COOLING | Oct 10, 18 | Apr 11, 19 | Not available |
| 2018/0202,346 | PISTON BEARING ASSEMBLY FOR AN OPPOSED-PISTON ENGINE | Mar 16, 18 | Jul 19, 18 | Achates Power Inc. |
| 2018/0038,265 | PISTON FOR AN INTERNAL COMBUSTION ENGINE | Feb 26, 16 | Feb 08, 18 | Not available |
| 2017/0370,273 | PISTON COOLING FOR OPPOSED-PISTON ENGINE | Aug 25, 17 | Dec 28, 17 | ACHATES POWER, INC. |
| 2017/0314,452 | PISTON FOR INTERNAL COMBUSTION ENGINE, AND COOLING CHANNEL CORE | May 24, 16 | Nov 02, 17 | DONG YANG PISTON CO., LTD. |
| 2017/0306,832 | PISTON COOLING FOR OPPOSED-PISTON ENGINES | Jul 12, 17 | Oct 26, 17 | ACHATES POWER, INC. |
| 2017/0284,273 | LIGHTWEIGHT POWER CELL UNIT | Apr 01, 16 | Oct 05, 17 | MAHLE INTERNATIONAL GMBH |
| 2017/0211,459 | PISTON WITH COOLING GALLERY RADIATOR AND METHOD OF CONSTRUCTION THEREOF | Jan 23, 17 | Jul 27, 17 | FEDERAL-MOGUL LLC |
| 2017/0030,291 | ELONGATE COOLING CHANNEL INLET FOR COOLING CHANNEL PISTONS AND METHOD FOR OPERATING | Apr 09, 15 | Feb 02, 17 | Not available |
| 2017/0030,292 | ASSEMBLY OF A PISTON AND AN OIL SPRAY NOZZLE FOR AN INTERNAL COMBUSTION ENGINE | Apr 09, 15 | Feb 02, 17 | MAHLE INTERNATIONAL GMBH |
| 2016/0201,544 | Piston Cooling For Opposed-Piston Engines | Jan 14, 15 | Jul 14, 16 | ACHATES POWER, INC. |
| 2016/0102,596 | PISTON CROWN COOLING FEATURE FOR DIESEL ENGINES | Oct 08, 14 | Apr 14, 16 | MAHLE INTERNATIONAL GMBH |
| 2015/0354,435 | PISTON CROWN COOLING GALLERY INSERT | Jun 06, 14 | Dec 10, 15 | MAHLE INTERNATIONAL GMBH |
| 2015/0247,475 | PISTON FOR AN INTERNAL COMBUSTION ENGINE | Aug 27, 13 | Sep 03, 15 | MAHLE INTERNATIONAL GMBH |