B01D 21/267
By using a cyclone
Official title: {by using a cyclone}
B01D21/267 (By using a cyclone) appears on 547 US grants and 496 published applications in this corpus.
Search patents in B01D- Granted patents
- 547
- Published applications
- 496
- Assignees
- 394
- Inventors
- 1,121
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 1 | 0 |
| 1978 | 3 | 0 |
| 1979 | 8 | 0 |
| 1980 | 3 | 0 |
| 1981 | 4 | 0 |
| 1982 | 2 | 0 |
| 1983 | 2 | 0 |
| 1984 | 2 | 0 |
| 1985 | 8 | 0 |
| 1986 | 3 | 0 |
| 1987 | 2 | 0 |
| 1988 | 4 | 0 |
| 1989 | 2 | 0 |
| 1990 | 6 | 0 |
| 1991 | 8 | 0 |
| 1992 | 4 | 0 |
| 1993 | 5 | 0 |
| 1994 | 5 | 0 |
| 1995 | 6 | 0 |
| 1996 | 15 | 0 |
| 1997 | 10 | 0 |
| 1998 | 5 | 0 |
| 1999 | 11 | 0 |
| 2000 | 16 | 0 |
| 2001 | 9 | 0 |
| 2002 | 4 | 4 |
| 2003 | 8 | 10 |
| 2004 | 7 | 10 |
| 2005 | 3 | 8 |
| 2006 | 5 | 10 |
| 2007 | 11 | 12 |
| 2008 | 4 | 7 |
| 2009 | 10 | 4 |
| 2010 | 5 | 10 |
| 2011 | 8 | 15 |
| 2012 | 7 | 13 |
| 2013 | 15 | 29 |
| 2014 | 16 | 35 |
| 2015 | 20 | 24 |
| 2016 | 27 | 29 |
| 2017 | 18 | 33 |
| 2018 | 37 | 33 |
| 2019 | 21 | 29 |
| 2020 | 37 | 42 |
| 2021 | 31 | 38 |
| 2022 | 29 | 28 |
| 2023 | 32 | 16 |
| 2024 | 21 | 22 |
| 2025 | 15 | 21 |
| 2026 | 10 | 14 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- System and method for processing a slurry29 Sep 2026US 12,747,645 B2Flowback Fluids LLC
- Apparatus and process for separating components of a multiphase hydrocarbon stream15 Sep 2026US 12,734,531 B2Omv Downstream GmbH
- Monitoring the oil of a lubrication device25 Aug 2026US 12,716,368 B2Safran Aero Boosters SA
- Cyclonic solids removal unit for downhole oil-water separation (DOWS)21 Jul 2026US 12,687,098 B2Halliburton Energy Services.Inc.
- Multi-stage circulating separation equipment28 Apr 2026US 12,612,318 B2
- Methods for purifying a reclaimed polymer24 Sep 2026US 2026/0286083 A1
- Device for transport and treatment of liquid20 Aug 2026US 2026/0241347 A1Searas AS
- Method and system for treating fluid30 Jul 2026US 2026/0216738 A1Vortex Corporation
- Cyclonic Separator System with a Bypass Conduit16 Jul 2026US 2026/0199911 A1
- Sand Separation System with Continuous Siphoned Sand Disposal16 Jul 2026US 2026/0201787 A1
Most cited
By later US patents
- Apparatus and method for separating particles from a cyclonic fluid flow270US 6,251,296 B1G. B. D. Corp. · 2001
- Drilling mud cleaning method and apparatus109US 4,634,535 A1987
- Apparatus for washing drill cuttings103US 4,546,783 AFlo Trend Shares, Inc. · 1985
- Method and apparatus for treatment of wastewater employing membrane bioreactors92US 6,805,806 B2Hydrotreat, Inc. · 2004
- Method and apparatus for separating floating and non-floating particulate from rainwater drainage71US 5,759,415 AVortechnics, Inc. · 1998