F04B 49/22
Control: by means of valves
Official title: by means of valves (F04B49/03 takes precedence)
F04B49/22 (Control: by means of valves) appears on 1,483 US grants and 1,430 published applications in this corpus.
Search patents in F04B- Granted patents
- 1,483
- Published applications
- 1,430
- Assignees
- 810
- Inventors
- 3,071
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 23 | 0 |
| 1977 | 21 | 0 |
| 1978 | 15 | 0 |
| 1979 | 4 | 0 |
| 1980 | 6 | 0 |
| 1981 | 4 | 0 |
| 1982 | 7 | 0 |
| 1983 | 11 | 0 |
| 1984 | 16 | 0 |
| 1985 | 15 | 0 |
| 1986 | 8 | 0 |
| 1987 | 5 | 0 |
| 1988 | 9 | 0 |
| 1989 | 10 | 0 |
| 1990 | 9 | 0 |
| 1991 | 13 | 0 |
| 1992 | 18 | 0 |
| 1993 | 15 | 0 |
| 1994 | 11 | 0 |
| 1995 | 17 | 0 |
| 1996 | 19 | 0 |
| 1997 | 21 | 0 |
| 1998 | 18 | 0 |
| 1999 | 16 | 0 |
| 2000 | 27 | 0 |
| 2001 | 30 | 3 |
| 2002 | 31 | 22 |
| 2003 | 33 | 32 |
| 2004 | 25 | 46 |
| 2005 | 16 | 23 |
| 2006 | 22 | 25 |
| 2007 | 6 | 20 |
| 2008 | 13 | 26 |
| 2009 | 21 | 31 |
| 2010 | 19 | 34 |
| 2011 | 15 | 31 |
| 2012 | 21 | 33 |
| 2013 | 25 | 53 |
| 2014 | 32 | 73 |
| 2015 | 39 | 77 |
| 2016 | 50 | 85 |
| 2017 | 65 | 103 |
| 2018 | 72 | 115 |
| 2019 | 90 | 86 |
| 2020 | 85 | 100 |
| 2021 | 80 | 86 |
| 2022 | 81 | 72 |
| 2023 | 73 | 74 |
| 2024 | 79 | 82 |
| 2025 | 81 | 54 |
| 2026 | 41 | 44 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Mobile distribution station with fail-safes22 Sep 2026US 12,741,862 B2Fuel Automation Station, LLC
- Single stage reciprocating piston compressor with cooling22 Sep 2026US 12,742,447 B2I-Jack Technologies Incorporated
- Connector structure of stepless capacity control actuator of reciprocating compressor22 Sep 2026US 12,742,451 B2Beijing University of Chemical Technology
- Controlling suction valves of a fluid pump15 Sep 2026US 12,736,045 B2SPM Oil & Gas Inc.
- Reciprocating piston pump18 Aug 2026US 12,710,033 B1Oshkosh Corporation
- Method of optimizing a coil pump system1 Oct 2026US 2026/0298216 A1MMC First Process AS
- Expandable, inner liner pump1 Oct 2026US 2026/0298221 A1Viking Pump, Inc.
- Hydraulic gas compressor24 Sep 2026US 2026/0286950 A1Magnokinetics Ltd
- Pump system24 Sep 2026US 2026/0286952 A1
- Pump system20 Aug 2026US 2026/0243247 A1
Most cited
By later US patents
- Pumping cartridge including a bypass valve and method for directing flow in a pumping cartridge543US 6,416,293 B1DEKA Products Limited Partnership · 2002
- Methods and systems for pulsed delivery of fluids from a pump296US 6,604,908 B1DEKA Products Limited Partnership · 2003
- Methods for controlling a pump's flow rate by pulsed discharge292US 6,749,403 B2DEKA Products Limited Partnership · 2004
- Pumping cartridge having an integrated filter and method for filtering a fluid with the cartridge244US 6,905,479 B1DEKA Products Limited Partnership · 2005
- Over pressure relief system for fluid ends217US 10,082,137 B2Caterpillar Inc. · 2018