B01D 2323/36
Introduction of specific chemical groups
B01D2323/36 (Introduction of specific chemical groups) appears on 201 US grants and 312 published applications in this corpus.
Search patents in B01D- Granted patents
- 201
- Published applications
- 312
- Assignees
- 215
- Inventors
- 773
- Latest grant
- 18 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 2 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 2 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 3 |
| 2003 | 1 | 2 |
| 2004 | 0 | 1 |
| 2005 | 2 | 5 |
| 2006 | 0 | 3 |
| 2007 | 3 | 3 |
| 2008 | 2 | 8 |
| 2009 | 0 | 5 |
| 2010 | 3 | 5 |
| 2011 | 3 | 11 |
| 2012 | 3 | 6 |
| 2013 | 2 | 9 |
| 2014 | 4 | 6 |
| 2015 | 8 | 19 |
| 2016 | 9 | 24 |
| 2017 | 16 | 16 |
| 2018 | 10 | 13 |
| 2019 | 13 | 15 |
| 2020 | 8 | 27 |
| 2021 | 22 | 32 |
| 2022 | 12 | 28 |
| 2023 | 25 | 27 |
| 2024 | 16 | 21 |
| 2025 | 22 | 10 |
| 2026 | 5 | 13 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Surface-treated porous materials having filtration properties and methods of preparing them18 Aug 2026US 12,708,879 B2Aculon, Inc.
- Preparation of metallocene containing cationic polymers for anion exchange applications28 Jul 2026US 12,691,419 B2University of South Carolina
- Gas separation membrane and method of producing gas separation membrane7 Jul 2026US 12,673,302 B2Seiko Epson Corporation
- Tetravalent boron-containing proton-exchange solid supports and methods of making and using tetravalent boron-containing proton-exchange solid supports12 May 2026US 12,626,945 B21s1 Energy, Inc.
- Ceramic cation exchange materials6 Jan 2026US 12,515,176 B2Membrion, Inc.
- Ceramic cation exchange materials13 Aug 2026US 2026/0233171 A1Membrion, Inc.
- Chemically enhanced electrodialysis (ceed): a universal platform for selective ion removal30 Jul 2026US 2026/0216660 A1Texas Tech University System
- Polymeric Hollow Fiber Membrane Having A Crosslinked Selective Layer, Carbon Molecular Sieve Hollow Fiber Membrane, And Methods For Preparing The Same30 Jul 2026US 2026/0216661 A1Sogang University Research & Business Development Foundation
- Process of manufacturing a device and device for the treatment of fluids23 Jul 2026US 2026/0208125 A1Medica Corporation
- Filtration apparatus containing graphene oxide membrane25 Jun 2026US 2026/0175179 A1Via Separations, Inc.
Most cited
By later US patents
- Purification of fluids with nanomaterials104US 7,211,320 B1Seldon Technologies, LLC · 2007
- Flat or capillary membrane based on a homogeneous mixture of polyvinylidene fluoride and a second polymer which can be rendered hydrophilic by chemical reaction100US 5,066,401 AAkzo N. V. · 1991
- Modified membranes85US 7,300,022 B2Siemens Water Technologies Corp. · 2007
- Reverse osmosis membranes78US 8,177,978 B2Nanoh20 Inc. · 2012
- Modified membranes64US 6,884,350 B2U. S. Filter Wastewater Group, Inc. · 2005