F03C 1/0639
Having two or more sets of cylinders or pistons
Official title: {having two or more sets of cylinders or pistons}
F03C1/0639 (Having two or more sets of cylinders or pistons) appears on 36 US grants and 37 published applications in this corpus.
Search patents in F03C- Granted patents
- 36
- Published applications
- 37
- Assignees
- 35
- Inventors
- 71
- Latest grant
- 17 Feb 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 2 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 2 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 1 |
| 2005 | 0 | 0 |
| 2006 | 1 | 2 |
| 2007 | 1 | 0 |
| 2008 | 0 | 1 |
| 2009 | 0 | 0 |
| 2010 | 1 | 2 |
| 2011 | 0 | 1 |
| 2012 | 1 | 0 |
| 2013 | 2 | 2 |
| 2014 | 1 | 2 |
| 2015 | 2 | 7 |
| 2016 | 2 | 0 |
| 2017 | 1 | 6 |
| 2018 | 2 | 1 |
| 2019 | 3 | 2 |
| 2020 | 3 | 2 |
| 2021 | 1 | 2 |
| 2022 | 0 | 0 |
| 2023 | 3 | 2 |
| 2024 | 0 | 2 |
| 2025 | 1 | 2 |
| 2026 | 3 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Hydraulic piston pump/motor with non-cantilevered pistons17 Feb 2026US 12,553,344 B2Goodrich Corporation
- Hydraulic device17 Feb 2026US 12,553,410 B2Bucher Hydraulics AG
- Hydraulic assembly device, system and method6 Jan 2026US 12,516,653 B2Gartech, LLC
- Hydraulic device22 Jul 2025US 12,366,232 B2Innas B.V.
- Hydraulic device and a pivot joint31 Oct 2023US 11,802,539 B2Innas B.V.
- A hydraulic device27 Nov 2025US 2025/0361849 A1Innas B.V.
- Hydraulic piston pump/motor with non-cantilevered pistons18 Sep 2025US 2025/0290418 A1Goodrich Corporation
- Electro-hydraulic apparatus, and vehicle comprising electro-hydraulic apparatus10 Oct 2024US 2024/0337256 A1Volvo Construction Equipment AB
- Hydraulic device4 Jul 2024US 2024/0218871 A1Innas B.V.
- Hydraulic assembly device, system and method14 Dec 2023US 2023/0400007 A1Gartech, LLC
Most cited
By later US patents
- Tandem hydraulic motor59US 5,207,060 ASauer Inc. · 1993
- Hydraulic motor21US 4,223,594 A1980
- Dual variable displacement over-center hydraulic motor power drive unit8US 5,406,794 ACurtiss Wright Flight Systems Inc. · 1995
- Hydraulic motor6US 4,201,117 A1980
- Variable length bent-axis pump/motor5US 8,356,547 B2The United States of America as represented by the Administrator of the U. S. Environmental Protection Agency · 2013