F01B 3/0035
Having two or more sets of cylinders or pistons
Official title: {having two or more sets of cylinders or pistons}
F01B3/0035 (Having two or more sets of cylinders or pistons) appears on 73 US grants and 57 published applications in this corpus.
Search patents in F01B- Granted patents
- 73
- Published applications
- 57
- Assignees
- 46
- Inventors
- 117
- Latest grant
- 17 Feb 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 4 | 0 |
| 1978 | 1 | 0 |
| 1979 | 2 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 2 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 2 | 0 |
| 1991 | 4 | 0 |
| 1992 | 2 | 0 |
| 1993 | 3 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 0 |
| 2003 | 1 | 4 |
| 2004 | 2 | 1 |
| 2005 | 1 | 9 |
| 2006 | 4 | 4 |
| 2007 | 3 | 5 |
| 2008 | 5 | 1 |
| 2009 | 0 | 0 |
| 2010 | 3 | 3 |
| 2011 | 0 | 1 |
| 2012 | 0 | 2 |
| 2013 | 1 | 3 |
| 2014 | 0 | 1 |
| 2015 | 3 | 4 |
| 2016 | 1 | 1 |
| 2017 | 1 | 3 |
| 2018 | 3 | 0 |
| 2019 | 3 | 1 |
| 2020 | 1 | 1 |
| 2021 | 2 | 6 |
| 2022 | 2 | 1 |
| 2023 | 1 | 1 |
| 2024 | 0 | 2 |
| 2025 | 2 | 2 |
| 2026 | 2 | 1 |
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 device22 Jul 2025US 12,366,232 B2Innas B.V.
- Variable displacement hydraulic motor10 Jun 2025US 12,326,088 B2Dana Motion Systems Italia S.R.L.
- Hydrostatic piston machine unit28 Feb 2023US 11,592,012 B2Robert Bosch GmbH
- Hydraulic Transformer10 Sep 2026US 2026/0266181 A1Innas 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
- Variable displacement hydraulic motor22 Aug 2024US 2024/0280020 A1Dana Motion Systems Italia S.R.L.
- Hydraulic device4 Jul 2024US 2024/0218871 A1Innas B.V.
Most cited
By later US patents
- Two plus two stroke opposed piston heat engine46US 4,996,953 A1991
- Linear movement motor and a swash plate for a motor of this type30US 4,489,682 AS.E.C.A. Societe Anonyme Societe d'Entreprises Commerciales et Aeronautiques · 1984
- Internal combustion engine and operating cycle27US 4,022,167 A1977
- Internal combustion engine and operating cycle20US 4,157,079 A1979
- Valving system for compressors, engines and the like19US 4,060,060 ATurner Research, Inc. · 1977