F02F 1/186
For use in engines with two or more pistons reciprocating within same
Official title: {for use in engines with two or more pistons reciprocating within same cylinder}
F02F1/186 (For use in engines with two or more pistons reciprocating within same) appears on 59 US grants and 61 published applications in this corpus.
Search patents in F02F- Granted patents
- 59
- Published applications
- 61
- Assignees
- 15
- Inventors
- 64
- Latest grant
- 19 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 2005 | 0 | 2 |
| 2006 | 1 | 1 |
| 2007 | 1 | 2 |
| 2008 | 1 | 3 |
| 2009 | 4 | 3 |
| 2010 | 1 | 7 |
| 2011 | 2 | 5 |
| 2012 | 4 | 3 |
| 2013 | 6 | 4 |
| 2014 | 3 | 5 |
| 2015 | 5 | 0 |
| 2016 | 4 | 6 |
| 2017 | 3 | 0 |
| 2018 | 7 | 9 |
| 2019 | 2 | 2 |
| 2020 | 4 | 3 |
| 2021 | 6 | 4 |
| 2022 | 2 | 0 |
| 2023 | 1 | 1 |
| 2024 | 0 | 1 |
| 2025 | 1 | 0 |
| 2026 | 1 | 0 |
By publication year. 2026 runs to 8 Oct.
Recent patents
- Internal combustion engine19 May 2026US 12,631,138 B2Carnot, S.A.
- Parent bore cylinder block of an opposed-piston engine29 Apr 2025US 12,286,940 B2Achates Power, Inc.
- Cylinder bore surface structures for an opposed-piston engine7 Mar 2023US 11,598,211 B2Achates Power, Inc.
- Fuel injector mounting assembly for an opposed-piston engine10 May 2022US 11,326,569 B2Achates Power, Inc.
- Cylinder for opposed-piston engines12 Apr 2022US 11,300,071 B2Achates Power, Inc.
- Parent bore cylinder block of an opposed-piston engine28 Nov 2024US 2024/0392734 A1Achates Power, Inc.
- Internal combustion engine30 Nov 2023US 2023/0383693 A1Carnot, S.A.
- Parent bore cylinder block of an opposed-piston engine5 Aug 2021US 2021/0239070 A1Achates Power, Inc.
- Parent bore cylinder block of an opposed-piston engine5 Aug 2021US 2021/0239071 A1Achates Power, Inc.
- Fuel injector mounting assembly for an opposed-piston engine27 May 2021US 2021/0156349 A1Achates Power, Inc.
Most cited
By later US patents
- Cylinder and piston assemblies for opposed piston engines88US 7,861,679 B2Achates Power, Inc. · 2011
- Internal combustion engine35US 7,559,298 B2Cleeves Engines Inc. · 2009
- Opposed piston engine33US 7,360,511 B2Achates Power, Inc. · 2008
- EGR constructions for opposed-piston engines32US 8,549,854 B2Achates Power, Inc. · 2013
- Two-cycle, opposed-piston internal combustion engine29US 7,156,056 B2Achates Power, Inc. · 2007