F04D 29/548
Specially adapted for liquid pumps
Official title: {Specially adapted for liquid pumps (F04D29/56 takes precedence)}
F04D29/548 (Specially adapted for liquid pumps) appears on 93 US grants and 95 published applications in this corpus.
Search patents in F04D- Granted patents
- 93
- Published applications
- 95
- Assignees
- 73
- Inventors
- 190
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 4 | 0 |
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 2 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 2 | 0 |
| 1999 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 1 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 1 |
| 2007 | 0 | 1 |
| 2008 | 1 | 0 |
| 2009 | 1 | 1 |
| 2010 | 0 | 4 |
| 2011 | 0 | 7 |
| 2012 | 3 | 4 |
| 2013 | 2 | 3 |
| 2014 | 2 | 3 |
| 2015 | 4 | 5 |
| 2016 | 2 | 8 |
| 2017 | 6 | 5 |
| 2018 | 3 | 3 |
| 2019 | 6 | 6 |
| 2020 | 7 | 7 |
| 2021 | 3 | 6 |
| 2022 | 4 | 2 |
| 2023 | 6 | 4 |
| 2024 | 7 | 14 |
| 2025 | 10 | 6 |
| 2026 | 5 | 5 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Vertical turbine pump and method for producing an elbow housing and/or a lantern housing of a vertical turbine pump6 Oct 2026US 12,753,766 B2Wilo SE
- Non-occluding intravascular blood pump providing reduced hemolysis15 Sep 2026US 12,736,054 B2Procyrion, Inc.
- Liquid circulator30 Jun 2026US 12,668,939 B2Kasco Marine, Inc.
- Submersible pump5 May 2026US 12,618,409 B2Vortex Pipe Systems LLC
- Intakes and gas separators for downhole pumps, and related apparatuses and methods28 Apr 2026US 12,612,915 B2
- Flow Reversing Pump Apparatus23 Jul 2026US 2026/0210323 A1
- System and method for handling thrust loads in axial flow pump23 Jul 2026US 2026/0210372 A1Schlumberger Technology Corporation
- Fish guide device for pump and axial flow pump/tubular flow pump station18 Jun 2026US 2026/0168508 A1Jiangsu University
- Fluid cooling technique for high gvf pumping11 Jun 2026US 2026/0160267 A1Al-Khorayef Petroleum Company
- Centrifugal Pump System15 Jan 2026US 2026/0013486 A1
Most cited
By later US patents
- Pump having impeller rotational about convoluted stationary member148US 5,040,944 A1991
- Non-clogging, centrifugal, coaxial discharge pump135US 4,063,849 A1977
- Non-occluding intravascular blood pump providing reduced hemolysis50US 11,235,138 B2Procyrion, Inc. · 2022
- Aeration apparatus for pond27US 5,011,372 ANigrelli Systems, Inc. · 1991
- Multistage pumps and compressors26US 5,755,554 AWeir Pumps Limited · 1998