F04B 49/022
By means of pressure
Official title: {by means of pressure}
F04B49/022 (By means of pressure) appears on 346 US grants and 288 published applications in this corpus.
Search patents in F04B- Granted patents
- 346
- Published applications
- 288
- Assignees
- 249
- Inventors
- 726
- Latest grant
- 11 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 3 | 0 |
| 1978 | 5 | 0 |
| 1979 | 3 | 0 |
| 1980 | 5 | 0 |
| 1981 | 4 | 0 |
| 1982 | 5 | 0 |
| 1983 | 2 | 0 |
| 1984 | 4 | 0 |
| 1985 | 4 | 0 |
| 1986 | 3 | 0 |
| 1987 | 1 | 0 |
| 1988 | 5 | 0 |
| 1989 | 2 | 0 |
| 1990 | 1 | 0 |
| 1991 | 5 | 0 |
| 1992 | 6 | 0 |
| 1993 | 4 | 0 |
| 1994 | 11 | 0 |
| 1995 | 2 | 0 |
| 1996 | 10 | 0 |
| 1997 | 9 | 0 |
| 1998 | 4 | 0 |
| 1999 | 7 | 0 |
| 2000 | 6 | 0 |
| 2001 | 10 | 1 |
| 2002 | 5 | 5 |
| 2003 | 7 | 8 |
| 2004 | 6 | 12 |
| 2005 | 2 | 2 |
| 2006 | 5 | 12 |
| 2007 | 2 | 13 |
| 2008 | 5 | 10 |
| 2009 | 5 | 9 |
| 2010 | 4 | 5 |
| 2011 | 7 | 9 |
| 2012 | 5 | 9 |
| 2013 | 5 | 21 |
| 2014 | 8 | 5 |
| 2015 | 7 | 3 |
| 2016 | 9 | 12 |
| 2017 | 10 | 12 |
| 2018 | 4 | 18 |
| 2019 | 17 | 14 |
| 2020 | 13 | 27 |
| 2021 | 26 | 25 |
| 2022 | 15 | 14 |
| 2023 | 19 | 19 |
| 2024 | 15 | 10 |
| 2025 | 15 | 7 |
| 2026 | 5 | 6 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Loading a fluidic element11 Aug 2026US 12,704,121 B2Dionex Softron GmbH
- Safety device for fluid ends11 Aug 2026US 12,704,426 B2Forum US, Inc.
- Multi-mode air compressor pressure power switch11 Aug 2026US 12,706,262 B2Transform Sr Brands LLC
- Systems and methods to autonomously operate hydraulic fracturing units19 May 2026US 12,631,102 B2BJ Energy Solutions, LLC
- Pneumatic gauge and pressure control device and pneumatic system including same24 Mar 2026US 12,583,278 B2
- Double Lumen Urine Drainage Tube with Integrated Pump16 Jul 2026US 2026/0199121 A1C. R. Bard, Inc.
- Base for pumping devices with increased functionalities2 Jul 2026US 2026/0185522 A1Dab Pumps S.P.A.
- Bellows pump device11 Jun 2026US 2026/0160241 A1Nippon Pillar Packing Co., Ltd.
- System and method for cooling system pump control12 Feb 2026US 2026/0047047 A1Vertiv Corporation
- Emissions collection system15 Jan 2026US 2026/0016002 A1C2G Engineering Inc.
Most cited
By later US patents
- Apparatus and method for monitoring a sump pump173US 5,672,050 ALynx Electronics, Inc. · 1997
- System and method for monitoring and control of cavitation in positive displacement pumps169US 9,546,652 B2IMO Industries, Inc. · 2017
- Torque allocating system for a variable displacement hydraulic system147US 9,488,169 B2Coneqtec Corp. · 2016
- Motor drive circuit for pressure control of a pumping system127US 5,580,221 AFranklin Electric Co., Inc. · 1996
- Electric pump control system110US 5,658,131 AHonda Giken Kogyo Kabushiki Kaisha · 1997