F04B 49/08
Regulating by delivery pressure
F04B49/08 (Regulating by delivery pressure) appears on 841 US grants and 762 published applications in this corpus.
Search patents in F04B- Granted patents
- 841
- Published applications
- 762
- Assignees
- 472
- Inventors
- 1,816
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 17 | 0 |
| 1977 | 12 | 0 |
| 1978 | 14 | 0 |
| 1979 | 9 | 0 |
| 1980 | 7 | 0 |
| 1981 | 6 | 0 |
| 1982 | 10 | 0 |
| 1983 | 12 | 0 |
| 1984 | 8 | 0 |
| 1985 | 16 | 0 |
| 1986 | 7 | 0 |
| 1987 | 8 | 0 |
| 1988 | 6 | 0 |
| 1989 | 4 | 0 |
| 1990 | 2 | 0 |
| 1991 | 9 | 0 |
| 1992 | 7 | 0 |
| 1993 | 9 | 0 |
| 1994 | 6 | 0 |
| 1995 | 2 | 0 |
| 1996 | 10 | 0 |
| 1997 | 3 | 0 |
| 1998 | 15 | 0 |
| 1999 | 16 | 0 |
| 2000 | 14 | 0 |
| 2001 | 19 | 2 |
| 2002 | 10 | 1 |
| 2003 | 9 | 6 |
| 2004 | 5 | 6 |
| 2005 | 5 | 13 |
| 2006 | 10 | 6 |
| 2007 | 3 | 12 |
| 2008 | 3 | 3 |
| 2009 | 4 | 5 |
| 2010 | 4 | 16 |
| 2011 | 6 | 24 |
| 2012 | 9 | 19 |
| 2013 | 10 | 35 |
| 2014 | 18 | 31 |
| 2015 | 30 | 35 |
| 2016 | 26 | 38 |
| 2017 | 32 | 44 |
| 2018 | 18 | 58 |
| 2019 | 38 | 52 |
| 2020 | 53 | 61 |
| 2021 | 55 | 79 |
| 2022 | 54 | 41 |
| 2023 | 63 | 47 |
| 2024 | 47 | 52 |
| 2025 | 52 | 43 |
| 2026 | 29 | 33 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
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Most cited
By later US patents
- Safety indicator lights for hydraulic fracturing pumps272US 9,650,871 B2U.S. Well Services, LLC · 2017
- Apparatus and method for regulating a pressure in a chamber203US 5,944,049 AAPPLIED Materials.Inc. · 1999
- Body support system176US 4,982,466 ALeggett & Platt, Incorporated · 1991
- Automated operation of wellsite pumping equipment170US 10,415,562 B2Schlumberger Technology Corporation · 2019
- System and method for monitoring and control of cavitation in positive displacement pumps169US 9,546,652 B2IMO Industries, Inc. · 2017