B01D 2325/30
Chemical resistance
B01D2325/30 (Chemical resistance) appears on 203 US grants and 330 published applications in this corpus.
Search patents in B01D- Granted patents
- 203
- Published applications
- 330
- Assignees
- 209
- Inventors
- 914
- Latest grant
- 18 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1988 | 2 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 2 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 5 | 0 |
| 2001 | 0 | 1 |
| 2002 | 1 | 2 |
| 2003 | 0 | 2 |
| 2004 | 3 | 4 |
| 2005 | 2 | 7 |
| 2006 | 2 | 10 |
| 2007 | 4 | 12 |
| 2008 | 5 | 7 |
| 2009 | 1 | 9 |
| 2010 | 5 | 18 |
| 2011 | 5 | 9 |
| 2012 | 9 | 11 |
| 2013 | 6 | 11 |
| 2014 | 13 | 22 |
| 2015 | 14 | 29 |
| 2016 | 12 | 23 |
| 2017 | 11 | 20 |
| 2018 | 13 | 9 |
| 2019 | 15 | 16 |
| 2020 | 13 | 21 |
| 2021 | 16 | 19 |
| 2022 | 6 | 9 |
| 2023 | 10 | 18 |
| 2024 | 4 | 18 |
| 2025 | 11 | 10 |
| 2026 | 8 | 13 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Thin-film composite membranes synthesized by multi-step coating methods18 Aug 2026US 12,708,881 B2Katholieke Universiteit Leuven
- Metal-organic framework material separation membrane, preparation method therefor, and use thereof21 Apr 2026US 12,605,678 B2Beijing Research Institute of Chemical Industry, China Petroleum & Chemical Corporation
- Polyamide composite reverse osmosis membrane and preparation method thereof21 Apr 2026US 12,605,679 B2Hunan Keensen Technology Co., Ltd.
- Acid resistant filter media7 Apr 2026US 12,595,396 B2Entegris, Inc.
- Separation membrane and manufacturing method therefor3 Mar 2026US 12,564,817 B2Toray Industries, Inc.
- Acid-resistant and alkali-resistant composite nanofiltration membrane, and preparation method therefor and use thereof17 Sep 2026US 2026/0273478 A1China Petroleum & Chemical Corporation
- Gas purification method10 Sep 2026US 2026/0264002 A1Shenyang Starlight New Materials Co., Ltd.
- Composite semipermeable membrane, composite semipermeable membrane module, fluid separation device, and method for producing composite semipermeable membrane6 Aug 2026US 2026/0225045 A1Toray Industries, Inc.
- Oxidation resistant membranes30 Jul 2026US 2026/0216669 A1BASF SE
- Zeolite-like molecular sieve membrane for removing fluorine and chlorine from waste acid and preparation method thereof16 Jul 2026US 2026/0199843 A1Kunming Metallurgical Research Institute Co., Ltd.
Most cited
By later US patents
- Microporous membranes of ultrahigh molecular weight polyethylene75US 4,778,601 AMillipore Corporation · 1988
- Membrane polymer compositions68US 7,226,541 B2Siemens Water Technology Corp. · 2007
- High flux membrane67US 4,749,487 ASyrinx Research Pty. Ltd. · 1988
- Process for manufacture of a porous polymer by use of a porogen58US 6,060,530 ACommonwealth Scientific and Industrial Research Organization · 2000
- Positively charged membrane47US 6,780,327 B1Pall Corporation · 2004