F04D 29/708
Specially for liquid pumps
Official title: {specially for liquid pumps}
F04D29/708 (Specially for liquid pumps) appears on 406 US grants and 409 published applications in this corpus.
Search patents in F04D- Granted patents
- 406
- Published applications
- 409
- Assignees
- 269
- Inventors
- 859
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 5 | 0 |
| 1977 | 3 | 0 |
| 1978 | 3 | 0 |
| 1979 | 1 | 0 |
| 1980 | 2 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 2 | 0 |
| 1984 | 1 | 0 |
| 1985 | 2 | 0 |
| 1986 | 3 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 7 | 0 |
| 1991 | 4 | 0 |
| 1992 | 5 | 0 |
| 1993 | 4 | 0 |
| 1994 | 3 | 0 |
| 1995 | 3 | 0 |
| 1996 | 5 | 0 |
| 1997 | 3 | 0 |
| 1998 | 4 | 0 |
| 1999 | 1 | 0 |
| 2000 | 3 | 0 |
| 2001 | 6 | 1 |
| 2002 | 4 | 9 |
| 2003 | 9 | 4 |
| 2004 | 8 | 7 |
| 2005 | 0 | 4 |
| 2006 | 2 | 7 |
| 2007 | 5 | 7 |
| 2008 | 1 | 11 |
| 2009 | 3 | 8 |
| 2010 | 6 | 12 |
| 2011 | 3 | 6 |
| 2012 | 12 | 8 |
| 2013 | 6 | 17 |
| 2014 | 15 | 14 |
| 2015 | 7 | 24 |
| 2016 | 6 | 11 |
| 2017 | 16 | 32 |
| 2018 | 17 | 29 |
| 2019 | 30 | 22 |
| 2020 | 23 | 14 |
| 2021 | 34 | 33 |
| 2022 | 24 | 21 |
| 2023 | 22 | 28 |
| 2024 | 36 | 32 |
| 2025 | 29 | 29 |
| 2026 | 15 | 19 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Water well submersible pump filter29 Sep 2026US 12,747,741 B2FES Labs, LLC
- Submersible pump housing22 Sep 2026US 12,742,462 B1Turtle Pump Company LLC
- Stick pump assembly1 Sep 2026US 12,723,590 B2Milwaukee Electric Tool Corporation
- Submersible pump with external slicer28 Jul 2026US 12,692,879 B1
- Systems and methods of prediction and management of scaling on components23 Jun 2026US 12,663,008 B2Sensia Netherlands B.V.
- Systems and methods of prediction and management of scaling on components8 Oct 2026US 2026/0309156 A1Schlumberger Technology Corporation
- Scalable multi-stage magnetic levitation molten salt pump1 Oct 2026US 2026/0298245 A1Lanzhou University of Technology
- Water pump and humidifier17 Sep 2026US 2026/0275997 A1Suzhou BeiAng Smart Technology Co., Ltd.
- Rod-shaped Water Pump10 Sep 2026US 2026/0266294 A1
- Method for removing a blockage of a centrifugal pump10 Sep 2026US 2026/0266314 A1Wilo SE
Most cited
By later US patents
- Molten metal pump with filter134US 4,940,384 AThe Carborundum Company · 1990
- Pump for pumping molten metal having cleaning and repair features128US 5,842,832 A1998
- Molten metal pump with filter121US 5,078,572 AThe Carborundum Company · 1992
- Molten metal pump with filter119US 5,286,163 AThe Carborundum Company · 1994
- Molten metal pump with protected inlet117US 6,533,535 B22003