B01D 21/14
With rotating scrapers
Official title: {with rotating scrapers}
B01D21/14 (With rotating scrapers) appears on 49 US grants and 13 published applications in this corpus.
Search patents in B01D- Granted patents
- 49
- Published applications
- 13
- Assignees
- 35
- Inventors
- 93
- Latest grant
- 29 Nov 2022
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 8 | 0 |
| 1977 | 9 | 0 |
| 1978 | 3 | 0 |
| 1979 | 1 | 0 |
| 1980 | 4 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 2 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 2 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 1 |
| 2003 | 2 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 1 |
| 2006 | 2 | 1 |
| 2007 | 0 | 1 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 1 |
| 2014 | 0 | 0 |
| 2015 | 0 | 1 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 1 |
| 2019 | 0 | 0 |
| 2020 | 2 | 2 |
| 2021 | 1 | 3 |
| 2022 | 3 | 0 |
| 2023 | 0 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Clarifier rake configuration and system and method including the same for bottom ash handling related to flue gas desulfurization29 Nov 2022US 11,511,216 B2United Conveyor Corporation
- Method and arrangement for controlling a dewatering process18 Jan 2022US 11,224,829 B2Outotec (Finland) Oy
- System for monitoring operation of thickeners and clarifiers11 Jan 2022US 11,220,444 B2Ovivo Inc.
- Clarifier rake configuration and system and method including the same for bottom ash handling related to flue gas desulfurization13 Apr 2021US 10,974,175 B2United Conveyor Corporation
- Deep cone thickener with underflow concentration rapid auto-adjustment15 Dec 2020US 10,864,463 B2University of Science and Technology Beijing
- Gravity separation of slurries3 Aug 2023US 2023/0241533 A1Extrakt Process Solutions, LLC
- Clarifier rake configuration and system and method including the same for bottom ash handling related to flue gas desulfurization30 Sep 2021US 2021/0299593 A1United Conveyor Corporation
- System for monitoring operation of thickeners and clarifiers4 Mar 2021US 2021/0061685 A1Ovivo Inc.
- Clarifier rake configuration and system and method including the same for bottom ash handling related to flue gas desulfurization18 Feb 2021US 2021/0046405 A1United Conveyor Corporation
- Deep cone thickener with underflow concentration rapid auto-adjustment20 Aug 2020US 2020/0261828 A1University of Science and Technology Beijing
Most cited
By later US patents
- Method and basin for sedimentation of sludge in waste water35US 6,099,743 AOdense Vandselskab A/S · 2000
- Apparatus for clarifying waste water28US 4,184,967 ALenox Institute for Research, Inc. · 1980
- System for pollution suppression26US 3,998,714 ATII Corporation · 1976
- Method and system for utilizing activated sludge in a ballasted flocculation process to remove BOD and suspended solids26US 7,153,431 B2I. Kruger Inc. · 2006
- Clarification tank23US 3,951,816 ABurmah Oil and Gas Company · 1976