F04B 1/16
Having two or more sets of cylinders or pistons
Official title: having two or more sets of cylinders or pistons
F04B1/16 (Having two or more sets of cylinders or pistons) appears on 96 US grants and 104 published applications in this corpus.
Search patents in F04B- Granted patents
- 96
- Published applications
- 104
- Assignees
- 58
- Inventors
- 146
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 2 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 2 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 1 |
| 2004 | 0 | 0 |
| 2005 | 1 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 1 |
| 2008 | 1 | 0 |
| 2009 | 0 | 1 |
| 2010 | 0 | 1 |
| 2011 | 0 | 1 |
| 2012 | 0 | 2 |
| 2013 | 1 | 3 |
| 2014 | 1 | 5 |
| 2015 | 5 | 6 |
| 2016 | 5 | 8 |
| 2017 | 3 | 14 |
| 2018 | 5 | 6 |
| 2019 | 6 | 15 |
| 2020 | 11 | 8 |
| 2021 | 10 | 9 |
| 2022 | 10 | 6 |
| 2023 | 7 | 7 |
| 2024 | 6 | 4 |
| 2025 | 5 | 4 |
| 2026 | 5 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Fracturing blender system and method using liquid petroleum gas8 Sep 2026US 12,729,613 B1Typhon Technology Solutions (U.S.), LLC
- Straight axis variable displacement piston pump with rotating swash plate14 Apr 2026US 12,601,333 B2Hamilton Sundstrand Corporation
- Dual pump VFD controlled motor electric fracturing system17 Feb 2026US 12,553,324 B2Typhon Technology Solutions (U.S.), LLC
- Multiple generator mobile electric powered fracturing system10 Feb 2026US 12,546,198 B2Typhon Technology Solutions (U.S.), LLC
- Liquid supply device13 Jan 2026US 12,523,202 B2Koganei Corporation
- Dual pump vfd controlled motor electric fracturing system25 Jun 2026US 2026/0176944 A1Typhon Technology Solutions (U.S.), LLC
- Food-processing machine9 Apr 2026US 2026/0098524 A1Provisur Technologies, Inc.
- Straight axis variable displacement piston pump with rotating swash plate25 Dec 2025US 2025/0389259 A1Hamilton Sundstrand Corporation
- Fluid end assembly10 Jul 2025US 2025/0223962 A1Kerr Machine Co.
- Fluid end assembly6 Mar 2025US 2025/0075697 A1Kerr Machine Co.
Most cited
By later US patents
- Mobile, modular, electrically powered system for use in fracturing underground formations using liquid petroleum gas341US 9,140,110 B2Evolution Well Services, LLC · 2015
- Electric blender system, apparatus and method for use in fracturing underground formations using liquid petroleum gas225US 10,107,085 B2Evolution Well Services, LLC · 2018
- System and method for dedicated electric source for use in fracturing underground formations using liquid petroleum gas223US 10,107,084 B2Evolution Well Services, LLC · 2018
- Mobile, modular, electrically powered system for use in fracturing underground formations using liquid petroleum gas145US 9,475,020 B2Evolution Well Services, LLC · 2016
- Mobile, modular, electrically powered system for use in fracturing underground formations using liquid petroleum gas99US 9,475,021 B2Evolution Well Services, LLC · 2016