F03C 1/007
Reciprocating-piston liquid engines: with single cylinder, double-acting piston
Official title: with single cylinder, double-acting piston
F03C1/007 (Reciprocating-piston liquid engines: with single cylinder, double-acting piston) appears on 77 US grants and 23 published applications in this corpus.
Search patents in F03C- Granted patents
- 77
- Published applications
- 23
- Assignees
- 45
- Inventors
- 115
- Latest grant
- 9 Dec 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 6 | 0 |
| 1977 | 10 | 0 |
| 1978 | 8 | 0 |
| 1979 | 4 | 0 |
| 1980 | 6 | 0 |
| 1981 | 3 | 0 |
| 1982 | 1 | 0 |
| 1983 | 3 | 0 |
| 1984 | 2 | 0 |
| 1985 | 2 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 2 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 1 |
| 2003 | 2 | 2 |
| 2004 | 1 | 0 |
| 2005 | 0 | 1 |
| 2006 | 0 | 0 |
| 2007 | 0 | 1 |
| 2008 | 1 | 2 |
| 2009 | 0 | 0 |
| 2010 | 1 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 2 |
| 2015 | 0 | 2 |
| 2016 | 1 | 0 |
| 2017 | 2 | 1 |
| 2018 | 1 | 2 |
| 2019 | 2 | 1 |
| 2020 | 1 | 1 |
| 2021 | 0 | 1 |
| 2022 | 2 | 2 |
| 2023 | 3 | 1 |
| 2024 | 2 | 3 |
| 2025 | 2 | 0 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- Hydraulically actuated double-acting positive displacement pump system for producing fluids from a wellbore9 Dec 2025US 12,492,620 B2PMC Pumps Inc.
- Thermal energy storage system including a plurality of vessels each having hot and cold liquid portions separated by a floating piston2 Sep 2025US 12,404,831 B2Norwich Technologies, Inc.
- Thermal energy storage system including a plurality of vessels each having hot and cold liquid portions separated by a floating piston4 Jun 2024US 12,000,369 B2Norwich Technologies, Inc.
- Osmotic energy transfer devices and methods9 Jan 2024US 11,867,159 B2
- Fluid driven solar panel cleaning system5 Dec 2023US 11,837,991 B2
- Thermal Energy Storage System Including a Plurality of Vessels Each Having Hot and Cold Liquid Portions Separated by a Floating Piston22 Aug 2024US 2024/0280074 A1Norwich Technologies, Inc.
- Osmotic energy transfer devices and methods2 May 2024US 2024/0141877 A1
- Hydraulically actuated double-acting positive displacement pump system for producing fluids from a wellbore15 Feb 2024US 2024/0052732 A1PMC Pumps Inc.
- Thermal Energy Storage System15 Jun 2023US 2023/0184207 A1Norwich Technologies, Inc.
- Fluid-Driven Linear Motor12 May 2022US 2022/0145847 A1Flapump AS
Most cited
By later US patents
- Paint pump for airless spray guns42US 4,030,857 AChampion Spark Plug Company · 1977
- Pump jack device29US 4,114,375 ACanadian Foremost Ltd. · 1978
- Electrohydraulically operated portable power tool27US 3,995,703 ARobert Bosch GmbH · 1976
- Hydraulic operated rock drilling apparatus27US 4,006,783 ALinden-Alimak AB · 1977
- Hammer24US 4,550,785 AConsolidated Technologies, Inc. · 1985