F04D 1/12
Pumps with scoops or like paring members protruding in the fluid circulating
Official title: Pumps with scoops or like paring members protruding in the fluid circulating in a bowl
F04D1/12 (Pumps with scoops or like paring members protruding in the fluid circulating) appears on 85 US grants and 33 published applications in this corpus.
Search patents in F04D- Granted patents
- 85
- Published applications
- 33
- Assignees
- 38
- Inventors
- 99
- Latest grant
- 25 Nov 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 6 | 0 |
| 1977 | 4 | 0 |
| 1978 | 1 | 0 |
| 1979 | 3 | 0 |
| 1980 | 3 | 0 |
| 1981 | 10 | 0 |
| 1982 | 3 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 2 | 0 |
| 1986 | 0 | 0 |
| 1987 | 2 | 0 |
| 1988 | 0 | 0 |
| 1989 | 2 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 4 | 0 |
| 1993 | 2 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 2 | 0 |
| 1997 | 1 | 0 |
| 1998 | 2 | 0 |
| 1999 | 3 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 3 | 0 |
| 2003 | 0 | 2 |
| 2004 | 2 | 0 |
| 2005 | 0 | 3 |
| 2006 | 0 | 2 |
| 2007 | 1 | 0 |
| 2008 | 0 | 0 |
| 2009 | 1 | 1 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 1 |
| 2013 | 1 | 0 |
| 2014 | 0 | 2 |
| 2015 | 1 | 2 |
| 2016 | 0 | 4 |
| 2017 | 3 | 4 |
| 2018 | 3 | 0 |
| 2019 | 5 | 5 |
| 2020 | 2 | 2 |
| 2021 | 2 | 1 |
| 2022 | 0 | 2 |
| 2023 | 3 | 1 |
| 2024 | 2 | 0 |
| 2025 | 1 | 0 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Centrifugal reservoir pump used for processing a hydrogen stream in an aircraft25 Nov 2025US 12,480,495 B2Airbus Operations GmbH
- Rotor having a plurality of spiral pathways to pass liquid or gas therethrough to increase power thereof29 Oct 2024US 12,129,856 B2
- Gas turbine water injection for emissions reduction9 Apr 2024US 11,952,940 B2Siemens Energy Global GmbH & Co. KG
- Centrifugal pump system7 Nov 2023US 11,805,765 B1
- Controllable pitot device and method14 Feb 2023US 11,578,732 B2Ettem Engineering S.A. Ltd.
- Pitot tube pump capable of conducting continuous oil-water separation23 Apr 2026US 2026/0108827 A1Nantong University
- Centrifugal reservoir pump used for processing a hydrogen stream in an aircraft31 Aug 2023US 2023/0271112 A1Airbus Operations GmbH
- Rotor having a plurality of spiral pathways to pass liquid or gas therethrough to increase power thereof13 Oct 2022US 2022/0325627 A1
- Gas turbine water injection for emissions reduction7 Jul 2022US 2022/0213837 A1Siemens Energy Global GmbH & Co. KG
- Controllable pitot device and method11 Feb 2021US 2021/0040951 A1Ettem Engineering S.A. Ltd.
Most cited
By later US patents
- Reverse osmosis with free rotor booster pump74US 4,973,408 A1990
- Movable inlet gas barrier for a free surface liquid scoop32US 5,685,691 ABiphase Energy Company · 1997
- Pitot compressor with liquid separator28US 4,059,364 AKobe, Inc. · 1977
- Centrifugal separator and system24US 4,044,943 AKobe, Inc. · 1977
- Pumping two-phase fluids22US 3,936,214 ASun Oil Company · 1976