B01D 2311/26
Further operations combined with membrane separation processes
B01D2311/26 (Further operations combined with membrane separation processes) appears on 1,150 US grants and 1,913 published applications in this corpus.
Search patents in B01D- Granted patents
- 1,150
- Published applications
- 1,913
- Assignees
- 1,030
- Inventors
- 4,157
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 2 | 0 |
| 1978 | 3 | 0 |
| 1979 | 2 | 0 |
| 1980 | 2 | 0 |
| 1981 | 4 | 0 |
| 1982 | 4 | 0 |
| 1983 | 2 | 0 |
| 1984 | 2 | 0 |
| 1985 | 1 | 0 |
| 1986 | 6 | 0 |
| 1987 | 7 | 0 |
| 1988 | 5 | 0 |
| 1989 | 2 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 2 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 3 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 1 |
| 2003 | 0 | 0 |
| 2004 | 1 | 3 |
| 2005 | 1 | 4 |
| 2006 | 4 | 5 |
| 2007 | 0 | 14 |
| 2008 | 4 | 13 |
| 2009 | 6 | 14 |
| 2010 | 5 | 15 |
| 2011 | 13 | 31 |
| 2012 | 16 | 45 |
| 2013 | 12 | 44 |
| 2014 | 22 | 56 |
| 2015 | 35 | 89 |
| 2016 | 46 | 105 |
| 2017 | 34 | 119 |
| 2018 | 81 | 137 |
| 2019 | 99 | 131 |
| 2020 | 104 | 172 |
| 2021 | 99 | 181 |
| 2022 | 114 | 158 |
| 2023 | 127 | 165 |
| 2024 | 106 | 164 |
| 2025 | 100 | 153 |
| 2026 | 67 | 94 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- B01D 2311/2626Absorption or adsorptionIndexing code256
- B01D 2311/2649FiltrationIndexing code232
- B01D 2311/2642Aggregation, sedimentation, flocculation, precipitation or coagulationIndexing code182
- B01D 2311/2688Biological processesIndexing code146
- B01D 2311/2623Ion-exchangeIndexing code134
- B01D 2311/2669DistillationIndexing code116
- B01D 2311/263Chemical reactionIndexing code92
- B01D 2311/2684Electrochemical processesIndexing code86
All 24 subgroupsShow fewer
- B01D 2311/2673EvaporationIndexing code79
- B01D 2311/2676Centrifugal separationIndexing code71
- B01D 2311/2661Addition of gasIndexing code70
- B01D 2311/2653DegassingIndexing code54
- B01D 2311/2692SterilizationIndexing code52
- B01D 2311/2611IrradiationIndexing code51
- B01D 2311/2643CrystallisationIndexing code43
- B01D 2311/2603Application of an electric field, different from the potential difference across theIndexing code38
- B01D 2311/2696Catalytic reactionsIndexing code30
- B01D 2311/2607Application of a magnetic fieldIndexing code28
- B01D 2311/2697ChromatographyIndexing code28
- B01D 2311/2699DryingIndexing code26
- B01D 2311/268Water softeningIndexing code19
- B01D 2311/2646DecantationIndexing code17
- B01D 2311/2674CondensationIndexing code14
- B01D 2311/2698CompressionIndexing code7
Recent patents
- Methods of dewatering of alcoholic solutions via forward osmosis and related systems6 Oct 2026US 12,752,239 B2Porifera, Inc.
- Purification of oligosaccharides from a fermentation broth by using filtration15 Sep 2026US 12,735,443 B2Chr. Hansen A/S
- Apparatus and method for liquid treatment by forward osmosis1 Sep 2026US 12,722,119 B2Waterwhelm Ltd
- Method for efficiently extracting and separating high-purity tetrodotoxin from pufferfish viscera18 Aug 2026US 12,709,618 B2Zhongyang Biotechnology (Shanghai) Co., LTD.
- Deaerator and electrolyte measurement system18 Aug 2026US 12,710,395 B2Hitachi High-Tech Corporation
- Systems and methods of draw solution recovery with energy saving evaporation supporting forward osmosis membrane crystallization17 Sep 2026US 2026/0274715 A1Fluid Technology Solutions (Fts), Inc.
- Device and method for purifying a fluid in the liquid phase10 Sep 2026US 2026/0264020 A1
- Method for Organic-Solvent Removal27 Aug 2026US 2026/0249247 A1Asahi Kasei Kabushiki Kaisha
- Method for Increasing Reverse Osmosis Recovery for High Silica Waters27 Aug 2026US 2026/0250161 A1Veolia Water Solutions & Technologies Support
- Method for purifying 1,1,1,2,3,3-hexafluoropropane27 Aug 2026US 2026/0250221 A1Arkema France
Most cited
By later US patents
- Reversible electrolytic system for softening and dealkalizing water93US 4,671,863 A1987
- Membrane bioreactor, process and aerator74US 6,863,817 B2Zenon Environmental Inc. · 2005
- Electrochemical deionization63US 5,584,981 AUnited Kingdom Atomic Energy Authority · 1996
- Devices, systems and methods for reducing the concentration of a chemical entity in fluids60US 7,763,097 B2University of Pittsburgh—Of the Commonwealth System of Higher Education · 2010
- Removing heavy metal ions from blood56US 4,612,122 A1986