F04D 7/02
Pumps adapted for handling specific fluids: of centrifugal type
Official title: of centrifugal type
F04D7/02 (Pumps adapted for handling specific fluids: of centrifugal type) appears on 1,124 US grants and 954 published applications in this corpus.
Search patents in F04D- Granted patents
- 1,124
- Published applications
- 954
- Assignees
- 559
- Inventors
- 1,787
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 12 | 0 |
| 1977 | 10 | 0 |
| 1978 | 14 | 0 |
| 1979 | 9 | 0 |
| 1980 | 9 | 0 |
| 1981 | 6 | 0 |
| 1982 | 10 | 0 |
| 1983 | 8 | 0 |
| 1984 | 13 | 0 |
| 1985 | 9 | 0 |
| 1986 | 11 | 0 |
| 1987 | 8 | 0 |
| 1988 | 11 | 0 |
| 1989 | 15 | 0 |
| 1990 | 16 | 0 |
| 1991 | 14 | 0 |
| 1992 | 28 | 0 |
| 1993 | 18 | 0 |
| 1994 | 15 | 0 |
| 1995 | 17 | 0 |
| 1996 | 12 | 0 |
| 1997 | 19 | 0 |
| 1998 | 12 | 0 |
| 1999 | 13 | 0 |
| 2000 | 25 | 0 |
| 2001 | 20 | 4 |
| 2002 | 29 | 10 |
| 2003 | 14 | 16 |
| 2004 | 11 | 19 |
| 2005 | 14 | 30 |
| 2006 | 15 | 14 |
| 2007 | 12 | 21 |
| 2008 | 18 | 27 |
| 2009 | 10 | 29 |
| 2010 | 16 | 31 |
| 2011 | 15 | 28 |
| 2012 | 29 | 28 |
| 2013 | 29 | 46 |
| 2014 | 19 | 50 |
| 2015 | 29 | 71 |
| 2016 | 38 | 56 |
| 2017 | 55 | 56 |
| 2018 | 41 | 52 |
| 2019 | 56 | 48 |
| 2020 | 48 | 55 |
| 2021 | 40 | 47 |
| 2022 | 47 | 42 |
| 2023 | 42 | 44 |
| 2024 | 59 | 59 |
| 2025 | 56 | 34 |
| 2026 | 28 | 37 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Multistage disc pump for multiphase fluids6 Oct 2026US 12,753,771 B2
- Sealed micropump8 Sep 2026US 12,728,255 B2Kardion GmbH
- High viscosity pump and rotor for pumping liquids, materials and slurries1 Sep 2026US 12,723,589 B2Eddy Pump Corporation
- Pump system18 Aug 2026US 12,709,404 B2Airbus Operations GmbH
- Axial pump and riser18 Aug 2026US 12,710,044 B2Molten Metal Equipment Innovations, LLC
- Scalable multi-stage magnetic levitation molten salt pump1 Oct 2026US 2026/0298245 A1Lanzhou University of Technology
- Damped Solid Body3 Sep 2026US 2026/0257450 A1KSB SE & Co. KGaA
- Turbomachine27 Aug 2026US 2026/0251078 A1Kawasaki Jukogyo Kabushiki Kaisha
- Submersible Semi-Axial Centrifugal Pump and Impeller for Such Pump27 Aug 2026US 2026/0251149 A1Xylem Europe GmbH
- Combined slurry inducer and crusher20 Aug 2026US 2026/0241388 A1Flowserve Pte. Ltd.
Most cited
By later US patents
- Stabilizing drive for contactless rotary blood pump impeller214US 7,976,271 B2HeartWare, Inc. · 2011
- Pump system for high pressure application176US 9,829,002 B2Tucson Embedded Systems, Inc. · 2017
- Shrouded thrust bearings168US 7,997,854 B2HeartWare, Inc. · 2011
- Pump system for high pressure application164US 10,465,689 B2Tucson Embedded Systems, Inc. · 2019
- Submerisble molten metal pump157US 5,203,681 A1993