B01D 2311/00
Details relating to membrane separation process operations and control
B01D2311/00 (Details relating to membrane separation process operations and control) appears on 2,760 US grants and 4,019 published applications in this corpus.
Search patents in B01D- Granted patents
- 2,760
- Published applications
- 4,019
- Assignees
- 1,907
- Inventors
- 8,061
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 5 | 0 |
| 1977 | 4 | 0 |
| 1978 | 13 | 0 |
| 1979 | 11 | 0 |
| 1980 | 12 | 0 |
| 1981 | 11 | 0 |
| 1982 | 16 | 0 |
| 1983 | 9 | 0 |
| 1984 | 12 | 0 |
| 1985 | 9 | 0 |
| 1986 | 17 | 0 |
| 1987 | 22 | 0 |
| 1988 | 19 | 0 |
| 1989 | 13 | 0 |
| 1990 | 6 | 0 |
| 1991 | 8 | 0 |
| 1992 | 13 | 0 |
| 1993 | 18 | 0 |
| 1994 | 14 | 0 |
| 1995 | 13 | 0 |
| 1996 | 24 | 0 |
| 1997 | 25 | 0 |
| 1998 | 22 | 0 |
| 1999 | 26 | 0 |
| 2000 | 24 | 0 |
| 2001 | 26 | 2 |
| 2002 | 30 | 38 |
| 2003 | 24 | 49 |
| 2004 | 34 | 58 |
| 2005 | 22 | 53 |
| 2006 | 27 | 52 |
| 2007 | 30 | 65 |
| 2008 | 30 | 84 |
| 2009 | 30 | 78 |
| 2010 | 39 | 111 |
| 2011 | 66 | 137 |
| 2012 | 67 | 111 |
| 2013 | 64 | 149 |
| 2014 | 75 | 150 |
| 2015 | 83 | 175 |
| 2016 | 102 | 187 |
| 2017 | 104 | 218 |
| 2018 | 142 | 227 |
| 2019 | 175 | 216 |
| 2020 | 177 | 296 |
| 2021 | 182 | 273 |
| 2022 | 189 | 271 |
| 2023 | 190 | 282 |
| 2024 | 173 | 294 |
| 2025 | 186 | 267 |
| 2026 | 127 | 176 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- B01D 2311/04Specific process operations in the feed streamIndexing code1,229
- B01D 2311/26Further operations combined with membrane separation processesIndexing code1,150
- B01D 2311/06Specific process operations in the permeate streamIndexing code458
- B01D 2311/25Recirculation, recycling or bypassIndexing code374
- B01D 2311/08Specific process operations in the concentrate streamIndexing code282
- B01D 2311/14Pressure controlIndexing code270
- B01D 2311/10Temperature controlIndexing code209
- B01D 2311/24Quality controlIndexing code189
All 15 subgroupsShow fewer
- B01D 2311/12Addition of chemical agentsIndexing code182
- B01D 2311/16Flow or flux controlIndexing code156
- B01D 2311/18Ph controlIndexing code156
- B01D 2311/13Use of sweep gasIndexing code114
- B01D 2311/02Specific process operations before starting the membrane separation processIndexing code91
- B01D 2311/20Power consumptionIndexing code30
- B01D 2311/22Details relating to membrane separation process operations and control: characterised by aIndexing code13
Recent patents
- Methods of dewatering of alcoholic solutions via forward osmosis and related systems6 Oct 2026US 12,752,239 B2Porifera, Inc.
- Method for drying separation membrane and method for producing separation membrane structure6 Oct 2026US 12,752,242 B2NGK Insulators, Ltd.
- Vessel, system, and associated method for product concentration29 Sep 2026US 12,746,513 B2Repligen Corporation
- circCDK13-enriched engineered small extracellular vesicle (E-sEV), and preparation method and use thereof22 Sep 2026US 12,740,945 B2Chinese Pla General Hospital
- Separation of alcohol using a membrane15 Sep 2026US 12,734,482 B2Altr Fltr Inc.
- Concentrated milk protein preparations8 Oct 2026US 2026/0305634 A150G Inc.
- Utilization of an ultra-high pressure reverse osmosis membrane system to treat industrial wastewater or a reverse osmosis reject waste stream8 Oct 2026US 2026/0308017 A1Renovo Resources LLC
- Apparatus and method for waste-water reduction in laboratory water purification system8 Oct 2026US 2026/0308022 A1Thermo Orion Inc.
- Method for recovering alkali metal salt and apparatus for recovering alkali metal salt1 Oct 2026US 2026/0295533 A1Toray Industries, Inc.
- System And Method For Preparation And Sterilization Of Buffer Or Cell Culture Medium1 Oct 2026US 2026/0297492 A1
Most cited
By later US patents
- Hot water disinfection of dialysis machines, including the extracorporeal circuit thereof490US 5,591,344 AAksys, Ltd. · 1997
- Dialysis material and method for removing uremic substances274US 4,581,141 APurdue Research Foundation · 1986
- Peritoneal dialysis system using reverse osmosis purification device260US 5,498,338 AAbbott Laboratories · 1996
- Blood collection and processing system252US 5,100,564 APall Corporation · 1992
- Hemodialysis machine with automatic priming by induced pressure pulses251US 5,863,421 AAksys, Ltd. · 1999