F02B 75/282
The pistons having equal strokes
Official title: {the pistons having equal strokes}
F02B75/282 (The pistons having equal strokes) appears on 319 US grants and 337 published applications in this corpus.
Search patents in F02B- Granted patents
- 319
- Published applications
- 337
- Assignees
- 84
- Inventors
- 342
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 2 | 0 |
| 1978 | 2 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 3 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 3 | 0 |
| 1991 | 1 | 0 |
| 1992 | 2 | 0 |
| 1993 | 0 | 0 |
| 1994 | 2 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 2 | 0 |
| 1998 | 2 | 0 |
| 1999 | 0 | 0 |
| 2000 | 4 | 0 |
| 2001 | 8 | 0 |
| 2002 | 3 | 2 |
| 2003 | 4 | 2 |
| 2004 | 1 | 7 |
| 2005 | 3 | 5 |
| 2006 | 4 | 5 |
| 2007 | 9 | 9 |
| 2008 | 3 | 10 |
| 2009 | 6 | 10 |
| 2010 | 4 | 16 |
| 2011 | 4 | 9 |
| 2012 | 9 | 35 |
| 2013 | 18 | 27 |
| 2014 | 24 | 17 |
| 2015 | 16 | 15 |
| 2016 | 20 | 28 |
| 2017 | 22 | 18 |
| 2018 | 22 | 17 |
| 2019 | 22 | 28 |
| 2020 | 26 | 23 |
| 2021 | 14 | 10 |
| 2022 | 12 | 9 |
| 2023 | 11 | 16 |
| 2024 | 12 | 8 |
| 2025 | 10 | 4 |
| 2026 | 3 | 7 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Multi-part piston construction for an opposed-piston engine29 Sep 2026US 12,747,713 B2General Atomics Aeronautical Systems, Inc.
- Internal combustion engine19 May 2026US 12,631,138 B2Carnot, S.A.
- Optimal efficiency internal combustion engine7 Apr 2026US 12,595,758 B2Creed Engines, LLC
- Opposed-piston internal combustion engine25 Nov 2025US 12,480,439 B2Umu Devising LLC
- Piston with a biaxial bearing for an opposed-piston engine14 Oct 2025US 12,442,328 B2Achates Power, Inc.
- Two stroke apposed pistons parallel cylinders internal combustion engine1 Oct 2026US 2026/0298132 A1
- Engine13 Aug 2026US 2026/0235053 A1Ishikawa Energy Research Co., Ltd.
- Engine13 Aug 2026US 2026/0235068 A1Ishikawa Energy Research Co., Ltd.
- Hydrogen internal combustion engine with injection ring25 Jun 2026US 2026/0177023 A1Ferrari S.P. A.
- Opposed-piston engine26 Mar 2026US 2026/0085630 A1Kubota Corporation
Most cited
By later US patents
- Cylinder and piston assemblies for opposed piston engines88US 7,861,679 B2Achates Power, Inc. · 2011
- Master and slave pullrods70US 9,593,710 B2EcoMotors, Inc. · 2017
- Two-stroke diesel engine55US 6,182,619 B2General Atomics Aeronautical Systems, Inc. · 2001
- Dual compression and dual expansion engine51US 5,623,894 ACaterpillar Inc. · 1997
- Two plus two stroke opposed piston heat engine46US 4,996,953 A1991