B01D 11/0284
Multistage extraction
Official title: {Multistage extraction}
B01D11/0284 (Multistage extraction) appears on 235 US grants and 344 published applications in this corpus.
Search patents in B01D- Granted patents
- 235
- Published applications
- 344
- Assignees
- 226
- Inventors
- 700
- Latest grant
- 18 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 2 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 2 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 4 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 2 | 0 |
| 1998 | 3 | 0 |
| 1999 | 2 | 0 |
| 2000 | 1 | 0 |
| 2001 | 2 | 0 |
| 2002 | 2 | 2 |
| 2003 | 0 | 2 |
| 2004 | 0 | 3 |
| 2005 | 2 | 2 |
| 2006 | 0 | 7 |
| 2007 | 2 | 0 |
| 2008 | 0 | 2 |
| 2009 | 1 | 4 |
| 2010 | 4 | 1 |
| 2011 | 2 | 1 |
| 2012 | 3 | 3 |
| 2013 | 0 | 4 |
| 2014 | 2 | 4 |
| 2015 | 4 | 11 |
| 2016 | 3 | 8 |
| 2017 | 8 | 8 |
| 2018 | 11 | 21 |
| 2019 | 17 | 26 |
| 2020 | 23 | 32 |
| 2021 | 21 | 33 |
| 2022 | 21 | 49 |
| 2023 | 28 | 40 |
| 2024 | 25 | 31 |
| 2025 | 20 | 33 |
| 2026 | 8 | 17 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Atmospheric Triphasic Chromatography (ATC) method18 Aug 2026US 12,710,402 B2
- Closed rotatable extractor system9 Jun 2026US 12,649,114 B2Brevets, LLC
- Hydrometallurgical recovery method for nickel sulfate26 May 2026US 12,637,736 B2Ecopro Materials Co., Ltd.
- Method for recycling nickel, cobalt and manganese from feed liquid containing nickel, cobalt and manganese28 Apr 2026US 12,612,681 B2Suzhou Botree Cycling Sci & Tech Co., Ltd
- System and method for separating bitumen from shingle powder31 Mar 2026US 12,590,250 B2Redivius, Inc.
- Phytofunctional compositions24 Sep 2026US 2026/0287561 A1
- Method and apparatus for automated and continuous extraction of biomass23 Jul 2026US 2026/0208069 A1Unified Science, LLC
- Supercritical and subcritical fluid device, solvent extraction and separation method, and method for producing product16 Jul 2026US 2026/0199807 A1Tohoku University
- Method of converting copper cyanide to copper oxide and system thereof11 Jun 2026US 2026/0159409 A1Cyanco Corporation
- Solid waste remediation process4 Jun 2026US 2026/0151807 A1Jgb Innovations Pty Ltd
Most cited
By later US patents
- Accelerated solvent extraction method76US 5,843,311 ADionex Corporation · 1998
- Process and apparatus for recovering residual oil from solids dehydrated in an oil medium and grossly deoiled56US 3,950,230 AHanover Research Corporation · 1976
- Automated analyte supercritical fluid extraction apparatus41US 5,660,727 ADionex Corporation · 1997
- Parallel plate extractor system and method for using same37US 4,747,948 A1988
- Oil, water and sand separator37US 5,344,255 AItex Enterprises, Inc. · 1994