F04D 15/0072
Installation or systems with two or more pumps, wherein the flow path
Official title: {Installation or systems with two or more pumps, wherein the flow path through the stages can be changed, e.g. series-parallel}
F04D15/0072 (Installation or systems with two or more pumps, wherein the flow path) appears on 86 US grants and 76 published applications in this corpus.
Search patents in F04D- Granted patents
- 86
- Published applications
- 76
- Assignees
- 64
- Inventors
- 174
- Latest grant
- 18 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 2 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 2 | 0 |
| 1997 | 3 | 0 |
| 1998 | 2 | 0 |
| 1999 | 1 | 0 |
| 2000 | 3 | 0 |
| 2001 | 3 | 0 |
| 2002 | 1 | 1 |
| 2003 | 1 | 1 |
| 2004 | 0 | 0 |
| 2005 | 0 | 1 |
| 2006 | 1 | 1 |
| 2007 | 1 | 0 |
| 2008 | 0 | 2 |
| 2009 | 1 | 3 |
| 2010 | 1 | 0 |
| 2011 | 1 | 1 |
| 2012 | 1 | 1 |
| 2013 | 0 | 1 |
| 2014 | 0 | 1 |
| 2015 | 2 | 8 |
| 2016 | 3 | 4 |
| 2017 | 3 | 4 |
| 2018 | 5 | 3 |
| 2019 | 5 | 3 |
| 2020 | 4 | 7 |
| 2021 | 6 | 5 |
| 2022 | 3 | 5 |
| 2023 | 6 | 6 |
| 2024 | 9 | 6 |
| 2025 | 4 | 4 |
| 2026 | 3 | 8 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Pump system18 Aug 2026US 12,709,404 B2Airbus Operations GmbH
- Valve pump unit2 Jun 2026US 12,644,458 B2Vitesco Technologies GmbH
- Subsea pumping and booster system19 May 2026US 12,631,096 B2Baker Hughes Energy Technology UK Limited
- Shift pump flow scheme7 Oct 2025US 12,439,569 B2Cooper-Standard Automotive Inc.
- Multi-switch pump assembly29 Jul 2025US 12,372,097 B2Cooper-Standard Automotive Inc.
- Subsea pumping and booster system17 Sep 2026US 2026/0275839 A1Baker Hughes Energy Technology UK Limited
- Control system for cooling distribution unit and control method for cdu group flow control21 May 2026US 2026/0143647 A1Delta Electronics, Inc.
- Using Multiple In-Line Fluid Systems16 Apr 2026US 2026/0103960 A1Upwing Energy, LLC
- In-Line Fluid System with Pressurized Coupling16 Apr 2026US 2026/0103962 A1Upwing Energy, LLC
- In-Line Fluid System with In-Line Fluid End16 Apr 2026US 2026/0103963 A1Upwing Energy, LLC
Most cited
By later US patents
- Pumping station in a water flow system158US 5,135,361 A1992
- Sealless integral-motor pump with regenerative impeller disk131US 6,280,157 B1Flowserve Management Company · 2001
- Pump system for a firefighting vehicle115US 7,874,373 B2Oshkosh Corporation · 2011
- Valve network and method for controlling pressure within a supercritical working fluid circuit in a heat engine system with a turbopump74US 10,267,184 B2Echogen Power Systems, LLC · 2019
- Multi functional pump for pumping molten metal59US 7,507,365 B22009