F04D 29/2244
Free vortex
Official title: {Free vortex}
F04D29/2244 (Free vortex) appears on 37 US grants and 26 published applications in this corpus.
Search patents in F04D- Granted patents
- 37
- Published applications
- 26
- Assignees
- 25
- Inventors
- 58
- Latest grant
- 26 Aug 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 3 | 0 |
| 1987 | 1 | 0 |
| 1988 | 2 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 2 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 1 |
| 2003 | 1 | 0 |
| 2004 | 0 | 1 |
| 2005 | 0 | 0 |
| 2006 | 1 | 1 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 1 | 2 |
| 2010 | 1 | 1 |
| 2011 | 0 | 0 |
| 2012 | 1 | 0 |
| 2013 | 1 | 0 |
| 2014 | 0 | 1 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 1 | 1 |
| 2018 | 1 | 4 |
| 2019 | 1 | 2 |
| 2020 | 1 | 2 |
| 2021 | 4 | 2 |
| 2022 | 3 | 2 |
| 2023 | 3 | 5 |
| 2024 | 1 | 0 |
| 2025 | 2 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Centrifugal pump for conveying media containing solids26 Aug 2025US 12,398,724 B2KSB SE & Co. KGaA
- Pump with vibration sensor and its production process4 Feb 2025US 12,215,696 B2KSB Aktiengesellschaft
- Housing element for a pump and pump/housing element combination16 Jul 2024US 12,038,014 B2Herborner Pumpentechnik Gmbh & Co KG
- Pump impeller and pump herewith19 Sep 2023US 11,761,453 B2Herborner Pumpentechnik Gmbh & Co KG
- Impeller for disc pump20 Jun 2023US 11,680,578 B1
- Flow pump17 Apr 2025US 2025/0122883 A1OASE GmbH
- Pool body21 Dec 2023US 2023/0407659 A1Oriental Recreational Products (Shanghai) Co., Ltd
- Condensing device and condensing system having the same14 Sep 2023US 2023/0288150 A1Everinn International Co., Ltd.
- Centrifugal Pump for Conveying Media Containing Solids17 Aug 2023US 2023/0258195 A1KSB SE & Co. KGaA
- Pump with vibration sensor and its production process3 Aug 2023US 2023/0243358 A1KSB Aktiengesellschaft
Most cited
By later US patents
- Pump for shear sensitive fluids121US 5,490,763 A1996
- Slurry pump apparatus including fluid housing117US 5,114,312 AAtsco, Inc. · 1992
- Vortex pump116US 4,592,700 AEbara Corporation · 1986
- Adjustable vortex pump112US 4,338,062 ABuffalo Forge Company · 1982
- Adjustable vortex pump21US 4,386,886 ABuffalo Forge Company · 1983