B01D 61/029
Multistep processes comprising different kinds of membrane processes selected from reverse osmosis
Official title: {Multistep processes comprising different kinds of membrane processes selected from reverse osmosis, hyperfiltration or nanofiltration}
B01D61/029 (Multistep processes comprising different kinds of membrane processes selected from reverse osmosis) appears on 180 US grants and 255 published applications in this corpus.
Search patents in B01D- Granted patents
- 180
- Published applications
- 255
- Assignees
- 139
- Inventors
- 488
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 2 | 0 |
| 1996 | 3 | 0 |
| 1997 | 2 | 0 |
| 1998 | 2 | 0 |
| 1999 | 3 | 0 |
| 2000 | 3 | 0 |
| 2001 | 3 | 0 |
| 2002 | 3 | 3 |
| 2003 | 5 | 4 |
| 2004 | 3 | 6 |
| 2005 | 3 | 7 |
| 2006 | 1 | 5 |
| 2007 | 2 | 3 |
| 2008 | 3 | 4 |
| 2009 | 1 | 6 |
| 2010 | 0 | 15 |
| 2011 | 7 | 15 |
| 2012 | 4 | 7 |
| 2013 | 3 | 10 |
| 2014 | 13 | 9 |
| 2015 | 6 | 9 |
| 2016 | 7 | 9 |
| 2017 | 3 | 15 |
| 2018 | 9 | 15 |
| 2019 | 10 | 9 |
| 2020 | 14 | 21 |
| 2021 | 15 | 21 |
| 2022 | 13 | 16 |
| 2023 | 12 | 12 |
| 2024 | 9 | 17 |
| 2025 | 7 | 9 |
| 2026 | 8 | 8 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Preparation method of milk oligosaccharides and oligosaccharide powder and food prepared thereby15 Sep 2026US 12,735,512 B2Beijing Sanyuan Foods Co., Ltd.
- Systems and methods for ammonia recovery, acid gas separation, or combination thereof7 Jul 2026US 12,673,876 B2Innovator Energy, LLC
- Process for the production and separation of 5-hydroxymethylfurfural with quaternary ammonium salts7 Jul 2026US 12,673,928 B2Novamont S. p. A.
- Systems and methods for treatment of elevated organic content streams26 May 2026US 12,636,620 B2Spinovo LLC
- Techniques for managing scale formation in reverse osmosis (RO) and nanofiltration (NF) systems and a hybrid filtration architecture implementing the same12 May 2026US 12,623,921 B2Clean H2O Technologies, LLC
- Process for the production and separation of 5- hydroxymethylfurfural with quaternary ammonium salts1 Oct 2026US 2026/0297047 A1Novamont S. p. A.
- Methods for making charged ultrafiltration membranes and uses thereof in dairy applications30 Jul 2026US 2026/0216653 A1fairlife, LLC
- Systems and methods for processing black liquor solutions18 Jun 2026US 2026/0168171 A1
- Removing components of alcoholic solutions via forward osmosis and related systems14 May 2026US 2026/0131285 A1Porifera, Inc.
- System and methods for concentrating dissolved solids in an aqueous solution30 Apr 2026US 2026/0115664 A1Saudi Water Authority
Most cited
By later US patents
- High water recovery membrane purification process140US 6,113,797 A2000
- Production of high purity water using reverse osmosis139US 5,766,479 AZenon Environmental Inc. · 1998
- Recovery of carboxylic acids from chemical plant effluents85US 5,635,071 AZenon Airport Enviromental, Inc. · 1997
- Process for desalination of saline water, especially water, having increased product yield and quality85US 6,508,936 B1Saline Water Conversion Corporation · 2003
- Desalination method and apparatus utilizing nanofiltration and reverse osmosis membranes80US 6,190,556 B12001