F04D 29/426
Especially adapted for liquid pumps
Official title: {especially adapted for liquid pumps}
F04D29/426 (Especially adapted for liquid pumps) appears on 1,335 US grants and 1,390 published applications in this corpus.
Search patents in F04D- Granted patents
- 1,335
- Published applications
- 1,390
- Assignees
- 716
- Inventors
- 2,664
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 19 | 0 |
| 1977 | 7 | 0 |
| 1978 | 8 | 0 |
| 1979 | 6 | 0 |
| 1980 | 4 | 0 |
| 1981 | 6 | 0 |
| 1982 | 2 | 0 |
| 1983 | 5 | 0 |
| 1984 | 1 | 0 |
| 1985 | 8 | 0 |
| 1986 | 6 | 0 |
| 1987 | 4 | 0 |
| 1988 | 9 | 0 |
| 1989 | 12 | 0 |
| 1990 | 8 | 0 |
| 1991 | 16 | 0 |
| 1992 | 22 | 0 |
| 1993 | 23 | 0 |
| 1994 | 23 | 0 |
| 1995 | 11 | 0 |
| 1996 | 11 | 0 |
| 1997 | 11 | 0 |
| 1998 | 13 | 0 |
| 1999 | 12 | 0 |
| 2000 | 21 | 0 |
| 2001 | 19 | 6 |
| 2002 | 17 | 12 |
| 2003 | 19 | 22 |
| 2004 | 14 | 21 |
| 2005 | 16 | 34 |
| 2006 | 10 | 23 |
| 2007 | 8 | 20 |
| 2008 | 17 | 30 |
| 2009 | 9 | 17 |
| 2010 | 17 | 25 |
| 2011 | 9 | 17 |
| 2012 | 18 | 24 |
| 2013 | 18 | 50 |
| 2014 | 28 | 61 |
| 2015 | 26 | 65 |
| 2016 | 29 | 91 |
| 2017 | 69 | 109 |
| 2018 | 51 | 89 |
| 2019 | 98 | 89 |
| 2020 | 89 | 91 |
| 2021 | 76 | 95 |
| 2022 | 79 | 94 |
| 2023 | 102 | 93 |
| 2024 | 102 | 84 |
| 2025 | 83 | 72 |
| 2026 | 44 | 56 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Fluid connection for a hydromotive machine15 Sep 2026US 12,736,025 B2
- Tandem seal pump8 Sep 2026US 12,729,692 B2Ceco Environmental IP Inc.
- Water flow system for washer, and washer1 Sep 2026US 12,721,496 B2Ningbo Fotile Kitchen Ware Co., Ltd.
- High viscosity pump and rotor for pumping liquids, materials and slurries1 Sep 2026US 12,723,589 B2Eddy Pump Corporation
- Stick pump assembly1 Sep 2026US 12,723,590 B2Milwaukee Electric Tool Corporation
- Fluid delivery system health monitoring systems and methods1 Oct 2026US 2026/0298249 A1Oshkosh Corporation
- Pump Assembly1 Oct 2026US 2026/0298263 A1KSB SE & Co. KGaA
- Water pump and humidifier17 Sep 2026US 2026/0275997 A1Suzhou BeiAng Smart Technology Co., Ltd.
- Rod-shaped Water Pump10 Sep 2026US 2026/0266294 A1
- Liquid-flow cooling device3 Sep 2026US 2026/0262193 A1Cooler Master Co., Ltd.
Most cited
By later US patents
- Systems and methods for routing pressurized fluid305US 8,905,056 B2Halliburton Energy Services.Inc. · 2014
- Rotary machine with an electromagnetic rotary drive208US 6,100,618 ALust Antriebstechnik GmbH · 2000
- Mixed flow pump183US 6,692,318 B2The Penn State Research Foundation · 2004
- Pump system for high pressure application176US 9,829,002 B2Tucson Embedded Systems, Inc. · 2017
- Fluid pump with magnetically levitated impeller173US 5,195,877 A1993