F04B 1/053
With actuating or actuated elements at the inner ends of the cylinders
Official title: with actuating or actuated elements at the inner ends of the cylinders
F04B1/053 (With actuating or actuated elements at the inner ends of the cylinders) appears on 445 US grants and 493 published applications in this corpus.
Search patents in F04B- Granted patents
- 445
- Published applications
- 493
- Assignees
- 199
- Inventors
- 768
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 0 | 0 |
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 6 | 0 |
| 1983 | 1 | 0 |
| 1984 | 4 | 0 |
| 1985 | 5 | 0 |
| 1986 | 3 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 4 | 0 |
| 1990 | 3 | 0 |
| 1991 | 3 | 0 |
| 1992 | 1 | 0 |
| 1993 | 2 | 0 |
| 1994 | 3 | 0 |
| 1995 | 3 | 0 |
| 1996 | 3 | 0 |
| 1997 | 3 | 0 |
| 1998 | 6 | 0 |
| 1999 | 5 | 0 |
| 2000 | 1 | 0 |
| 2001 | 4 | 2 |
| 2002 | 2 | 1 |
| 2003 | 3 | 2 |
| 2004 | 2 | 5 |
| 2005 | 3 | 3 |
| 2006 | 1 | 5 |
| 2007 | 4 | 8 |
| 2008 | 1 | 9 |
| 2009 | 4 | 7 |
| 2010 | 3 | 4 |
| 2011 | 8 | 4 |
| 2012 | 7 | 10 |
| 2013 | 4 | 9 |
| 2014 | 4 | 6 |
| 2015 | 10 | 7 |
| 2016 | 3 | 8 |
| 2017 | 0 | 20 |
| 2018 | 17 | 31 |
| 2019 | 24 | 45 |
| 2020 | 33 | 45 |
| 2021 | 29 | 46 |
| 2022 | 47 | 40 |
| 2023 | 38 | 53 |
| 2024 | 45 | 43 |
| 2025 | 51 | 52 |
| 2026 | 36 | 28 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Fluid end block and fluid end for a multiplex piston pump having multiple inlet passages15 Sep 2026US 12,736,035 B2
- Radial piston pump, method for operating a radial piston pump, and steering system15 Sep 2026US 12,736,036 B2Pump Technology Solutions PS GmbH
- Fluid end with transition surface geometry18 Aug 2026US 12,710,036 B2Gd Energy Products, LLC
- Fluid end with transition surface geometry18 Aug 2026US 12,710,038 B2Gd Energy Products, LLC
- Fluid end assembly18 Aug 2026US 12,710,039 B2Kerr Machine Co.
- Long stroke parallel pump1 Oct 2026US 2026/0298218 A1National Oilwell Varco, L. P.
- Power end of reciprocating pump24 Sep 2026US 2026/0286955 A1Gd Energy Products, LLC
- Fluid end17 Sep 2026US 2026/0275971 A1Kerr Machine Co.
- Fluid routing plug17 Sep 2026US 2026/0275972 A1Kerr Machine Co.
- Fluid end block and fluid end for a multiplex piston pump having multiple inlet passages20 Aug 2026US 2026/0243239 A1
Most cited
By later US patents
- Status monitoring and failure diagnosis system for plunger pump155US 11,047,379 B1American Jereh International Corporation · 2021
- Segmented fluid end124US 10,184,470 B22019
- Positive-displacement type pump system119US 5,167,493 ANissan Motor Co., Ltd. · 1992
- Radial piston fluid machine and/or adjustable rotor116US 5,634,777 A1997
- Status monitoring and failure diagnosis system for plunger pump100US 11,401,927 B2American Jereh International Corporation · 2022