B01D 21/2477
Centrifugal pumps
Official title: {Centrifugal pumps}
B01D21/2477 (Centrifugal pumps) appears on 36 US grants and 22 published applications in this corpus.
Search patents in B01D- Granted patents
- 36
- Published applications
- 22
- Assignees
- 22
- Inventors
- 67
- Latest grant
- 29 Jul 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 2 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 2 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 1 |
| 2003 | 1 | 0 |
| 2004 | 1 | 1 |
| 2005 | 0 | 1 |
| 2006 | 0 | 0 |
| 2007 | 0 | 1 |
| 2008 | 2 | 1 |
| 2009 | 0 | 2 |
| 2010 | 1 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 1 |
| 2017 | 1 | 0 |
| 2018 | 1 | 4 |
| 2019 | 1 | 1 |
| 2020 | 2 | 3 |
| 2021 | 3 | 1 |
| 2022 | 2 | 3 |
| 2023 | 2 | 2 |
| 2024 | 0 | 0 |
| 2025 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Slurry removal system29 Jul 2025US 12,370,471 B2Eddy Pump Corporation
- Sand setting circulating device for wave-current tank test tailings13 Jun 2023US 11,674,280 B2Fishery Engineering Research Institute, Chinese Academy Of Fishery Sciences
- Fluid treatment system and process24 Jan 2023US 11,560,326 B2Synergy Watercare Solutions Inc.
- System for processing solid and liquid construction waste13 Sep 2022US 11,439,929 B2Clean Slurry Technology, Inc.
- Solids transfer pump with modular components22 Feb 2022US 11,255,083 B2Thermaco, Inc.
- Sand setting circulating device for wave-current tank test tailings20 Apr 2023US 2023/0120957 A1Fishery Engineering Research Institute, Chinese Academy Of Fishery Sciences
- Fluid treatment system and process20 Apr 2023US 2023/0122133 A1Synergy Watercare Solutions Inc.
- Slurry removal system17 Nov 2022US 2022/0362688 A1Eddy Pump Corporation
- Method for Removing Solids Submerged in a Polymer-Based Slurry29 Sep 2022US 2022/0305409 A1Clean Slurry Technology, Inc.
- Fluid treatment system and process8 Sep 2022US 2022/0281763 A1Synergy Watercare Solutions Inc.
Most cited
By later US patents
- Helical separator55US 6,036,749 APetroleo Brasileiro S.A. - Petrobras · 2000
- Sludge collector employing floating weir53US 5,378,376 AWisconsin Oven Corporation · 1995
- Jet pump treatment of heavy oil production sand46US 6,527,960 B1Canadian Environmental Equipment & Engineering Technologies, Inc. · 2003
- Clarifying tank39US 6,793,814 B2M - I L. L. C. · 2004
- Intrachannel clarifier23US 4,952,310 A1990