F04D 1/006
Double suction pumps
Official title: {double suction pumps}
F04D1/006 (Double suction pumps) appears on 81 US grants and 57 published applications in this corpus.
Search patents in F04D- Granted patents
- 81
- Published applications
- 57
- Assignees
- 54
- Inventors
- 141
- Latest grant
- 3 Feb 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 2 | 0 |
| 1978 | 3 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 4 | 0 |
| 1988 | 3 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 2 | 0 |
| 1999 | 4 | 0 |
| 2000 | 1 | 0 |
| 2001 | 2 | 1 |
| 2002 | 0 | 1 |
| 2003 | 2 | 0 |
| 2004 | 0 | 0 |
| 2005 | 1 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 2 |
| 2008 | 1 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 1 |
| 2011 | 1 | 0 |
| 2012 | 1 | 1 |
| 2013 | 1 | 6 |
| 2014 | 1 | 2 |
| 2015 | 1 | 4 |
| 2016 | 3 | 3 |
| 2017 | 3 | 5 |
| 2018 | 4 | 5 |
| 2019 | 3 | 4 |
| 2020 | 5 | 8 |
| 2021 | 7 | 7 |
| 2022 | 7 | 1 |
| 2023 | 5 | 2 |
| 2024 | 1 | 1 |
| 2025 | 3 | 1 |
| 2026 | 1 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Double-suction split case multi-disc pump3 Feb 2026US 12,540,622 B1
- Electric water pump16 Dec 2025US 12,497,977 B2Coavis
- Symmetrical radially split centrifugal multistage thrustless pump2 Dec 2025US 12,486,853 B1Flowserve Pte. Ltd.
- Centrifugal compressor2 Sep 2025US 12,404,866 B1Kabushiki Kaisha Toyota Jidoshokki
- Centrifugal pump assembly31 Dec 2024US 12,180,968 B2Grundfos Holding A/S
- Vortex slurry pump23 Jul 2026US 2026/0210362 A1
- Intelligent dual drive pump and water supply system1 Jan 2026US 2026/0002539 A1Qingdao Sanli Group Co., Ltd.
- Electric water pump9 Jan 2025US 2025/0012293 A1Coavis
- End-suction pump with dual inlet impeller4 Apr 2024US 2024/0110578 A1ITT Manufacturing Enterprises, Inc.
- Centrifugal pump assembly1 Jun 2023US 2023/0167826 A1Grundfos Holding A/S
Most cited
By later US patents
- Magnetically suspended and rotated impellor pump apparatus and method291US 4,688,998 A1987
- Rotary machine with an electromagnetic rotary drive208US 6,100,618 ALust Antriebstechnik GmbH · 2000
- Dual volute molten metal pump and selective outlet discriminating means150US 4,786,230 A1988
- Blood pump having rotor with internal bore for fluid flow121US 5,938,412 AAdvanced Bionics AG · 1999
- Blood pump having radial vanes with enclosed magnetic drive components117US 5,924,848 AAdvanced Bionics AG · 1999