F04B 53/162
Adaptations of cylinders
Official title: {Adaptations of cylinders}
F04B53/162 (Adaptations of cylinders) appears on 804 US grants and 736 published applications in this corpus.
Search patents in F04B- Granted patents
- 804
- Published applications
- 736
- Assignees
- 436
- Inventors
- 1,471
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 20 | 0 |
| 1977 | 15 | 0 |
| 1978 | 13 | 0 |
| 1979 | 15 | 0 |
| 1980 | 9 | 0 |
| 1981 | 7 | 0 |
| 1982 | 3 | 0 |
| 1983 | 5 | 0 |
| 1984 | 12 | 0 |
| 1985 | 9 | 0 |
| 1986 | 9 | 0 |
| 1987 | 4 | 0 |
| 1988 | 5 | 0 |
| 1989 | 6 | 0 |
| 1990 | 10 | 0 |
| 1991 | 6 | 0 |
| 1992 | 9 | 0 |
| 1993 | 4 | 0 |
| 1994 | 6 | 0 |
| 1995 | 10 | 0 |
| 1996 | 6 | 0 |
| 1997 | 13 | 0 |
| 1998 | 13 | 0 |
| 1999 | 15 | 0 |
| 2000 | 14 | 0 |
| 2001 | 17 | 6 |
| 2002 | 11 | 10 |
| 2003 | 12 | 8 |
| 2004 | 7 | 17 |
| 2005 | 8 | 13 |
| 2006 | 0 | 9 |
| 2007 | 11 | 15 |
| 2008 | 4 | 21 |
| 2009 | 7 | 21 |
| 2010 | 18 | 30 |
| 2011 | 13 | 15 |
| 2012 | 17 | 27 |
| 2013 | 20 | 24 |
| 2014 | 10 | 29 |
| 2015 | 25 | 24 |
| 2016 | 22 | 43 |
| 2017 | 17 | 45 |
| 2018 | 37 | 36 |
| 2019 | 42 | 32 |
| 2020 | 29 | 38 |
| 2021 | 28 | 41 |
| 2022 | 40 | 46 |
| 2023 | 32 | 54 |
| 2024 | 51 | 53 |
| 2025 | 50 | 37 |
| 2026 | 38 | 42 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Syringe pump6 Oct 2026US 12,753,756 B2Fluid Metering, Inc.
- Fluid end block and fluid end for a multiplex piston pump having multiple inlet passages15 Sep 2026US 12,736,035 B2
- Header ring8 Sep 2026US 12,729,679 B1Utex Industries, Inc.
- Fluid retention apparatus for fluid end of positive displacement pump and related method25 Aug 2026US 12,716,412 B2
- Packing style piston rod25 Aug 2026US 12,716,413 B2Gd Energy Products, LLC
- Proportional volumetric dosing unit8 Oct 2026US 2026/0309135 A1Mixtron S.R.L.
- Adjustable seal system for a reciprocating pump1 Oct 2026US 2026/0298225 A1Gd Energy Products, LLC
- Packing seal locking assembly for pumps and associated methods17 Sep 2026US 2026/0275983 A1Vulcan Industrial Holdings, LLC
- Seal Stack Assembly for Reciprocating Pump17 Sep 2026US 2026/0276085 A1Saint-Gobain Performance Plastics Corporation
- Systems and methods of sealing fluids at eccentric temperatures in static and dynamic environments10 Sep 2026US 2026/0266282 A1Shape Technologies Group, Inc.
Most cited
By later US patents
- Disposable ambulatory microprocessor controlled volumetric pump249US 5,807,075 ASarcos Corp. · 1998
- High pressure reciprocating pump apparatus214US 4,878,815 A1989
- Fluid end with protected flow passages192US 9,739,130 B2Acme Industries, Inc. · 2017
- Intravenous liquid pumping system and method191US 4,468,222 AValleylab, Inc. · 1984
- Plunger pump fluid end186US 8,784,081 B12014