F04B 23/06
The pumps being all of reciprocating positive-displacement type
Official title: the pumps being all of reciprocating positive-displacement type
F04B23/06 (The pumps being all of reciprocating positive-displacement type) appears on 665 US grants and 717 published applications in this corpus.
Search patents in F04B- Granted patents
- 665
- Published applications
- 717
- Assignees
- 364
- Inventors
- 1,250
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 2 | 0 |
| 1978 | 2 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 3 | 0 |
| 1982 | 3 | 0 |
| 1983 | 1 | 0 |
| 1984 | 5 | 0 |
| 1985 | 8 | 0 |
| 1986 | 3 | 0 |
| 1987 | 2 | 0 |
| 1988 | 1 | 0 |
| 1989 | 2 | 0 |
| 1990 | 0 | 0 |
| 1991 | 4 | 0 |
| 1992 | 2 | 0 |
| 1993 | 2 | 0 |
| 1994 | 0 | 0 |
| 1995 | 4 | 0 |
| 1996 | 6 | 0 |
| 1997 | 4 | 0 |
| 1998 | 5 | 0 |
| 1999 | 5 | 0 |
| 2000 | 5 | 0 |
| 2001 | 7 | 1 |
| 2002 | 9 | 7 |
| 2003 | 6 | 8 |
| 2004 | 13 | 18 |
| 2005 | 8 | 18 |
| 2006 | 11 | 12 |
| 2007 | 14 | 20 |
| 2008 | 20 | 12 |
| 2009 | 9 | 20 |
| 2010 | 14 | 20 |
| 2011 | 12 | 10 |
| 2012 | 13 | 27 |
| 2013 | 16 | 14 |
| 2014 | 15 | 29 |
| 2015 | 17 | 26 |
| 2016 | 20 | 40 |
| 2017 | 22 | 38 |
| 2018 | 23 | 45 |
| 2019 | 37 | 37 |
| 2020 | 41 | 50 |
| 2021 | 49 | 54 |
| 2022 | 44 | 56 |
| 2023 | 46 | 45 |
| 2024 | 59 | 49 |
| 2025 | 45 | 36 |
| 2026 | 21 | 25 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
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- Fluid end with clamped retention25 Aug 2026US 12,716,495 B2Kerr Machine Co.
- Smoothing pump rate during transition18 Aug 2026US 12,710,031 B2Halliburton Energy Services.Inc.
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- Active checked multiple displacer assembly1 Oct 2026US 2026/0298217 A1Graco Minnesota Inc.
- Long stroke parallel pump1 Oct 2026US 2026/0298218 A1National Oilwell Varco, L. P.
- Through-Hardened Valve Seat for Hydraulic Fracturing1 Oct 2026US 2026/0298349 A1Apex Industrial LLC
Most cited
By later US patents
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- Quintuplex mud pump319US 8,083,504 B2Weatherford/Lamb, Inc. · 2011
- Systems and methods for routing pressurized fluid305US 8,905,056 B2Halliburton Energy Services.Inc. · 2014
- Mobile, modular, electrically powered system for use in fracturing underground formations305US 9,121,257 B2Evolution Well Services, LLC · 2015