B01D 67/0081
After-treatment of organic or inorganic membranes
Official title: {After-treatment of organic or inorganic membranes}
B01D67/0081 (After-treatment of organic or inorganic membranes) appears on 2,491 US grants and 2,720 published applications in this corpus.
Search patents in B01D- Granted patents
- 2,491
- Published applications
- 2,720
- Assignees
- 1,226
- Inventors
- 6,596
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 11 | 0 |
| 1977 | 6 | 0 |
| 1978 | 11 | 0 |
| 1979 | 6 | 0 |
| 1980 | 8 | 0 |
| 1981 | 16 | 0 |
| 1982 | 12 | 0 |
| 1983 | 10 | 0 |
| 1984 | 13 | 0 |
| 1985 | 14 | 0 |
| 1986 | 21 | 0 |
| 1987 | 40 | 0 |
| 1988 | 40 | 0 |
| 1989 | 55 | 0 |
| 1990 | 55 | 0 |
| 1991 | 61 | 0 |
| 1992 | 51 | 0 |
| 1993 | 50 | 0 |
| 1994 | 38 | 0 |
| 1995 | 32 | 0 |
| 1996 | 36 | 0 |
| 1997 | 42 | 0 |
| 1998 | 39 | 0 |
| 1999 | 52 | 0 |
| 2000 | 35 | 0 |
| 2001 | 40 | 14 |
| 2002 | 35 | 47 |
| 2003 | 42 | 68 |
| 2004 | 28 | 101 |
| 2005 | 32 | 80 |
| 2006 | 38 | 85 |
| 2007 | 44 | 80 |
| 2008 | 36 | 85 |
| 2009 | 51 | 99 |
| 2010 | 65 | 111 |
| 2011 | 46 | 87 |
| 2012 | 69 | 113 |
| 2013 | 71 | 89 |
| 2014 | 72 | 101 |
| 2015 | 58 | 126 |
| 2016 | 75 | 145 |
| 2017 | 85 | 122 |
| 2018 | 95 | 120 |
| 2019 | 102 | 133 |
| 2020 | 115 | 147 |
| 2021 | 98 | 149 |
| 2022 | 97 | 144 |
| 2023 | 89 | 141 |
| 2024 | 97 | 122 |
| 2025 | 103 | 113 |
| 2026 | 54 | 98 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Method for drying separation membrane and method for producing separation membrane structure6 Oct 2026US 12,752,242 B2NGK Insulators, Ltd.
- Method of forming a cross-linked polymeric membrane29 Sep 2026US 12,746,516 B2Seppure Pte Ltd
- Separation of alcohol using a membrane15 Sep 2026US 12,734,482 B2Altr Fltr Inc.
- Membrane assembly for gas separation, method for producing the membrane assembly and method of separating gases15 Sep 2026US 12,734,487 B2Université De Fribourg
- Surface-treated porous materials having filtration properties and methods of preparing them18 Aug 2026US 12,708,879 B2Aculon, Inc.
- Compact spiral-wound filter elements, modules and systems24 Sep 2026US 2026/0284600 A1EMD Millipore Corporation
- Treated microporous membrane24 Sep 2026US 2026/0284603 A1PPG Industries Ohio, Inc.
- Conductive base membrane and preparation method thereof24 Sep 2026US 2026/0284606 A1Beijing Baoshengtong International Electrical Engineering Technology Co., Ltd.
- High-pressure reverse osmosis membrane based on pectin-assisted interfacial polymerization and preparation method therefor17 Sep 2026US 2026/0273475 A1Shandong Industrial Institute of Seawater Desalination and Multipurpose Utilization
- Separation membrane, method for manufacturing same, membrane module for at least one of deaeration and aeration, and device for at least one of deaeration and aeration17 Sep 2026US 2026/0273477 A1Toray Industries, Inc.
Most cited
By later US patents
- Treating hydrophobic filters to render them hydrophilic1,164US 4,525,374 AManresa, Inc. · 1985
- Multicomponent membranes for gas separations355US 4,230,463 AMonsanto Company · 1980
- Composite solid polymer electrolyte membranes346US 7,550,216 B2Foster-Miller, Inc. · 2009
- Plasma concentrate and tissue sealant methods and apparatuses for making concentrated plasma and/or tissue sealant316US 5,585,007 APlasmaseal LLC · 1996
- Biocompatible polymer membranes and methods of preparation of three dimensional membrane structures297US 5,514,378 AChildren's Medical Center Corporation · 1996