F04B 49/03
By means of valves
Official title: by means of valves
F04B49/03 (By means of valves) appears on 419 US grants and 455 published applications in this corpus.
Search patents in F04B- Granted patents
- 419
- Published applications
- 455
- Assignees
- 302
- Inventors
- 985
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 3 | 0 |
| 1996 | 9 | 0 |
| 1997 | 7 | 0 |
| 1998 | 6 | 0 |
| 1999 | 10 | 0 |
| 2000 | 6 | 0 |
| 2001 | 5 | 2 |
| 2002 | 9 | 9 |
| 2003 | 6 | 10 |
| 2004 | 9 | 16 |
| 2005 | 5 | 7 |
| 2006 | 8 | 11 |
| 2007 | 5 | 8 |
| 2008 | 4 | 13 |
| 2009 | 3 | 11 |
| 2010 | 2 | 13 |
| 2011 | 7 | 11 |
| 2012 | 10 | 14 |
| 2013 | 6 | 14 |
| 2014 | 12 | 23 |
| 2015 | 11 | 22 |
| 2016 | 10 | 17 |
| 2017 | 21 | 22 |
| 2018 | 22 | 23 |
| 2019 | 30 | 23 |
| 2020 | 21 | 31 |
| 2021 | 31 | 29 |
| 2022 | 32 | 38 |
| 2023 | 26 | 26 |
| 2024 | 25 | 29 |
| 2025 | 34 | 18 |
| 2026 | 20 | 15 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Compressor6 Oct 2026US 12,753,751 B2Hitachi Industrial Equipment Systems Co., Ltd.
- Method and system for compressed air supply18 Aug 2026US 12,710,008 B2Ford Global Technologies, LLC
- Multi-pressure integrated air pump18 Aug 2026US 12,710,032 B2Intex Marketing Ltd.
- Controlling suction valves of a fluid pump18 Aug 2026US 12,710,035 B2SPM Oil & Gas Inc.
- Loading a fluidic element11 Aug 2026US 12,704,121 B2Dionex Softron GmbH
- Sump pump systems, controllers, and methods for operating thereof17 Sep 2026US 2026/0275974 A1
- Pump system20 Aug 2026US 2026/0243247 A1
- Gas Compressor20 Aug 2026US 2026/0243261 A1Hitachi Industrial Equipment Systems Co., Ltd.
- Tank overfill and pump runaway prevention for a fluid management system23 Jul 2026US 2026/0209026 A1Graco Minnesota Inc.
- High Pressure Fuel Pump With Configuration To Mitigate Cavitation9 Jul 2026US 2026/0194033 A1
Most cited
By later US patents
- Drive mechanism for disposable fluid infusion pumping cassette400US 4,927,411 AAbbott Laboratories · 1990
- Over pressure relief system for fluid ends217US 10,082,137 B2Caterpillar Inc. · 2018
- Pump controller58US 6,099,264 AITT Manufacturing Enterprises, Inc. · 2000
- Safety device for a fluid transmission58US 6,595,233 B2Siemens Building Technologies, Inc. · 2003
- Motor driven air compressor having a combined vent valve and check valve assembly55US 5,681,151 ADeVilbiss Air Power Company · 1997