F04D 9/04
Priming: using priming pumps
Official title: using priming pumps; using booster pumps to prevent vapour-lock
F04D9/04 (Priming: using priming pumps) appears on 151 US grants and 98 published applications in this corpus.
Search patents in F04D- Granted patents
- 151
- Published applications
- 98
- Assignees
- 112
- Inventors
- 289
- Latest grant
- 12 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 1 | 0 |
| 1978 | 4 | 0 |
| 1979 | 1 | 0 |
| 1980 | 2 | 0 |
| 1981 | 3 | 0 |
| 1982 | 2 | 0 |
| 1983 | 2 | 0 |
| 1984 | 0 | 0 |
| 1985 | 2 | 0 |
| 1986 | 5 | 0 |
| 1987 | 0 | 0 |
| 1988 | 3 | 0 |
| 1989 | 3 | 0 |
| 1990 | 2 | 0 |
| 1991 | 6 | 0 |
| 1992 | 6 | 0 |
| 1993 | 4 | 0 |
| 1994 | 3 | 0 |
| 1995 | 6 | 0 |
| 1996 | 3 | 0 |
| 1997 | 3 | 0 |
| 1998 | 3 | 0 |
| 1999 | 2 | 0 |
| 2000 | 3 | 0 |
| 2001 | 2 | 1 |
| 2002 | 3 | 5 |
| 2003 | 5 | 1 |
| 2004 | 3 | 3 |
| 2005 | 1 | 5 |
| 2006 | 3 | 4 |
| 2007 | 2 | 0 |
| 2008 | 1 | 5 |
| 2009 | 1 | 2 |
| 2010 | 2 | 2 |
| 2011 | 1 | 4 |
| 2012 | 6 | 2 |
| 2013 | 0 | 6 |
| 2014 | 2 | 1 |
| 2015 | 4 | 2 |
| 2016 | 0 | 5 |
| 2017 | 2 | 3 |
| 2018 | 1 | 5 |
| 2019 | 4 | 4 |
| 2020 | 5 | 4 |
| 2021 | 5 | 5 |
| 2022 | 5 | 10 |
| 2023 | 7 | 8 |
| 2024 | 9 | 7 |
| 2025 | 4 | 2 |
| 2026 | 1 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Float box with valve12 May 2026US 12,624,697 B2B.B.A. Participaties B.V.
- Vacuum priming system for close-coupled pumps7 Oct 2025US 12,435,722 B2Cornell Pump Company
- Priming system for infusion devices19 Aug 2025US 12,390,582 B2Avent, Inc.
- Sealing ring gland and fuel pump including the same22 Apr 2025US 12,281,629 B2Phinia Jersey Holdings LLC
- Smart vacuum priming system8 Apr 2025US 12,270,421 B2Cornell Pump Company
- Liquid transfer pump30 Jul 2026US 2026/0218708 A1Zhejiang Ele Smart Technology Co., Ltd.
- Float box with valve12 Feb 2026US 2026/0043405 A1B.B.A. Participaties B.V.
- Belt drive system for centrifugal pump priming accessories2 Oct 2025US 2025/0305445 A1Cornell Pump Company
- Aeronautical thruster19 Jun 2025US 2025/0197014 A1Safran Aircraft Engines
- Sealing soft water recovery apparatus for vacuum pump in vacuum pressure swing adsorption oxygen generation system28 Nov 2024US 2024/0392786 A1Shanghai Lifengas Co., Ltd
Most cited
By later US patents
- Wet-dry vacuum apparatus with pump means for discharging liquid therefrom61US 4,080,104 A1978
- Single flow turbopump with integrated boosting56US 5,232,333 ASociete Europeenne de Propulsion · 1993
- Pump assembly54US 4,337,830 AHale Fire Pump Company · 1982
- Pump and motor unit with inducer at one end and centrifugal impeller at opposite end of the motor44US 3,975,117 A1976
- Pool pump primer44US 5,154,821 A1992