F04B 49/02
Stopping, starting, unloading or idling control
F04B49/02 (Stopping, starting, unloading or idling control) appears on 1,377 US grants and 1,302 published applications in this corpus.
Search patents in F04B- Granted patents
- 1,377
- Published applications
- 1,302
- Assignees
- 801
- Inventors
- 2,939
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 21 | 0 |
| 1977 | 9 | 0 |
| 1978 | 11 | 0 |
| 1979 | 7 | 0 |
| 1980 | 6 | 0 |
| 1981 | 6 | 0 |
| 1982 | 15 | 0 |
| 1983 | 10 | 0 |
| 1984 | 10 | 0 |
| 1985 | 16 | 0 |
| 1986 | 10 | 0 |
| 1987 | 7 | 0 |
| 1988 | 16 | 0 |
| 1989 | 9 | 0 |
| 1990 | 7 | 0 |
| 1991 | 11 | 0 |
| 1992 | 12 | 0 |
| 1993 | 14 | 0 |
| 1994 | 20 | 0 |
| 1995 | 11 | 0 |
| 1996 | 23 | 0 |
| 1997 | 27 | 0 |
| 1998 | 17 | 0 |
| 1999 | 24 | 0 |
| 2000 | 22 | 0 |
| 2001 | 22 | 5 |
| 2002 | 17 | 18 |
| 2003 | 21 | 23 |
| 2004 | 17 | 32 |
| 2005 | 12 | 15 |
| 2006 | 20 | 29 |
| 2007 | 9 | 28 |
| 2008 | 13 | 30 |
| 2009 | 12 | 31 |
| 2010 | 9 | 31 |
| 2011 | 15 | 39 |
| 2012 | 34 | 53 |
| 2013 | 32 | 68 |
| 2014 | 31 | 47 |
| 2015 | 38 | 52 |
| 2016 | 41 | 52 |
| 2017 | 49 | 65 |
| 2018 | 41 | 78 |
| 2019 | 82 | 79 |
| 2020 | 71 | 89 |
| 2021 | 81 | 96 |
| 2022 | 80 | 94 |
| 2023 | 79 | 84 |
| 2024 | 77 | 69 |
| 2025 | 82 | 49 |
| 2026 | 51 | 46 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
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- System condition detection using inlet pressure8 Sep 2026US 12,729,519 B2Fluid Handling LLC
- Solar powered water feature25 Aug 2026US 12,716,405 B2Smart Living Home & Garden
- Monitoring and controlling connected pool devices24 Sep 2026US 2026/0286736 A1Pentair Water Pool and Spa, Inc.
- Sump pump systems, controllers, and methods for operating thereof17 Sep 2026US 2026/0275974 A1
- A system for detecting a flow restriction in a drainage pipe and a liquid level sensor module for sensing the liquid level in a pipe27 Aug 2026US 2026/0251377 A1Charles Austen Pumps Ltd.
- Machine Learning-Based Systems for Parameter Deviation Monitoring and Alerting in Engines and Pump Controls20 Aug 2026US 2026/0243246 A1Cattron North America, Inc.
- Pump system20 Aug 2026US 2026/0243247 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
- Methods and systems for operating a fleet of pumps192US 10,815,764 B1BJ Energy Solutions, LLC · 2020
- Pump control and management system183US 7,309,216 B12007
- Pump system and method of starting pump174US 10,221,856 B2BJ Services Company · 2019