F04D 29/2294
For protection
Official title: {for protection, e.g. against abrasion}
F04D29/2294 (For protection) appears on 79 US grants and 83 published applications in this corpus.
Search patents in F04D- Granted patents
- 79
- Published applications
- 83
- Assignees
- 77
- Inventors
- 195
- Latest grant
- 13 Jan 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 2 | 0 |
| 1982 | 0 | 0 |
| 1983 | 2 | 0 |
| 1984 | 2 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 2 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 2 | 0 |
| 1994 | 0 | 0 |
| 1995 | 2 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 0 |
| 2003 | 1 | 2 |
| 2004 | 0 | 1 |
| 2005 | 0 | 1 |
| 2006 | 0 | 1 |
| 2007 | 1 | 2 |
| 2008 | 3 | 3 |
| 2009 | 1 | 0 |
| 2010 | 0 | 2 |
| 2011 | 0 | 2 |
| 2012 | 3 | 0 |
| 2013 | 2 | 5 |
| 2014 | 1 | 5 |
| 2015 | 0 | 5 |
| 2016 | 2 | 6 |
| 2017 | 8 | 9 |
| 2018 | 1 | 7 |
| 2019 | 4 | 5 |
| 2020 | 7 | 6 |
| 2021 | 5 | 5 |
| 2022 | 6 | 4 |
| 2023 | 4 | 3 |
| 2024 | 2 | 6 |
| 2025 | 6 | 1 |
| 2026 | 1 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Centrifugal pump impeller with tapered shroud13 Jan 2026US 12,523,235 B2Weir Minerals Australia Ltd.
- Rotors for use in caustic environments4 Nov 2025US 12,460,649 B2Vapotherm, Inc.
- Centrifugal pump for conveying media containing solids26 Aug 2025US 12,398,724 B2KSB SE & Co. KGaA
- Centrifugal slurry pump impeller shroud with lip8 Jul 2025US 12,352,281 B2Weir Minerals Australia Ltd.
- Wear element for a slurry pump8 Jul 2025US 12,352,282 B2Metso Sweden AB
- Pump apparatus for liquefied gas28 May 2026US 2026/0146623 A1Ebara Corporation
- Centrifugal Pump Having Wear-Resistant Wear Plate With Scraper Element5 Feb 2026US 2026/0036132 A1KSB SE & Co. KGaA
- Molten metal impeller with rock guard3 Jul 2025US 2025/0215887 A1
- Lightweight Hydraulics Design for Improved 3D Printability26 Sep 2024US 2024/0318658 A1KSB SE & Co. KGaA
- Centrifugal Slurry Pump Impeller Shroud With Lip1 Aug 2024US 2024/0254999 A1Weir Minerals Australia Ltd.
Most cited
By later US patents
- Pump system for high pressure application176US 9,829,002 B2Tucson Embedded Systems, Inc. · 2017
- Pump system for high pressure application164US 10,465,689 B2Tucson Embedded Systems, Inc. · 2019
- Composite centrifugal impeller for slurry pumps44US 4,428,717 ARockwell International Corporation · 1984
- Pump impeller and centrifugal slurry pump incorporating same24US 5,797,724 AVortex Australia Proprietary, Ltd. · 1998
- Wear resistant self lubricating centrifugal pump17US 4,202,654 A1980