F04D 9/02
Self-priming pumps
F04D9/02 (Self-priming pumps) appears on 86 US grants and 78 published applications in this corpus.
Search patents in F04D- Granted patents
- 86
- Published applications
- 78
- Assignees
- 62
- Inventors
- 163
- Latest grant
- 28 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 2 | 0 |
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 2 | 0 |
| 1981 | 2 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 2 | 0 |
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 3 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 1 | 3 |
| 2004 | 1 | 0 |
| 2005 | 0 | 2 |
| 2006 | 0 | 0 |
| 2007 | 0 | 2 |
| 2008 | 0 | 2 |
| 2009 | 0 | 0 |
| 2010 | 2 | 2 |
| 2011 | 0 | 2 |
| 2012 | 4 | 3 |
| 2013 | 3 | 1 |
| 2014 | 1 | 4 |
| 2015 | 1 | 8 |
| 2016 | 4 | 7 |
| 2017 | 7 | 8 |
| 2018 | 4 | 5 |
| 2019 | 6 | 2 |
| 2020 | 4 | 6 |
| 2021 | 3 | 4 |
| 2022 | 6 | 3 |
| 2023 | 6 | 5 |
| 2024 | 6 | 6 |
| 2025 | 1 | 2 |
| 2026 | 3 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Magnetic drive, seal-less pump28 Jul 2026US 12,692,872 B2
- Self-priming centrifugal pump assembly with multifunctional sealing system16 Jun 2026US 12,655,846 B2
- Method for controlling of a pump unit and a pump unit for pumping liquid or suspension5 May 2026US 12,618,413 B2Sulzer Management AG
- Modular cryogenic permanent magnet electrical motors and generators for submerged motor pumps and turbines and related systems and methods25 Nov 2025US 12,480,497 B2Flowserve US Company
- Self-priming assembly for use in a multi-stage pump17 Dec 2024US 12,168,986 B2Pentair Flow Technologies, LLC
- Modular cryogenic permanent magnet electrical motors and generatorsfor submerged motor pumps and turbines and related systems and methods19 Mar 2026US 2026/0078760 A1Flowserve US Company
- Method for controlling of a pump unit and a pump unit for pumping liquid or suspension20 Nov 2025US 2025/0354557 A1Sulzer Management AG
- Method for controlling of a pump unit and a pump unit for pumping liquid or suspension20 Nov 2025US 2025/0354561 A1Sulzer Management AG
- Inducers for cryogenic pumps and related systems and methods28 Nov 2024US 2024/0392787 A1Dwc & Associates, LLC
- Modular cryogenic permanent magnet electrical motors and generators for submerged motor pumps and turbines and related systems and methods28 Nov 2024US 2024/0392789 A1Dwc & Associates, LLC
Most cited
By later US patents
- Priming protection53US 8,573,952 B2Danfoss Low Power Drives · 2013
- Priming protection50US 8,469,675 B2Danfoss Low Power Drives · 2013
- Centrifugal pump having a housing and a volute casing wherein the volute casing has a tear-drop shaped inner wall defined by a circular body region and a converging apex with the inner wall comprising a blocker below at least one perimeter end of one diffuser blade34US 11,193,504 B1Aquastar Pool Products, Inc. · 2021
- Unit for delivering fuel from the fuel tank to the internal combustion engine of a motor vehicle33US 5,338,151 ARobert Bosch GmbH · 1994
- Corrosion and abrasion resistant centrifugal pump29US 4,052,133 AThe Gorman-Rupp Company · 1977