B01D 2323/2181
Inorganic additives
B01D2323/2181 (Inorganic additives) appears on 95 US grants and 191 published applications in this corpus.
Search patents in B01D- Granted patents
- 95
- Published applications
- 191
- Assignees
- 126
- Inventors
- 518
- Latest grant
- 21 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 1 |
| 2007 | 0 | 0 |
| 2008 | 1 | 2 |
| 2009 | 0 | 1 |
| 2010 | 1 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 1 |
| 2013 | 0 | 1 |
| 2014 | 1 | 1 |
| 2015 | 1 | 8 |
| 2016 | 5 | 14 |
| 2017 | 9 | 18 |
| 2018 | 6 | 10 |
| 2019 | 14 | 16 |
| 2020 | 10 | 19 |
| 2021 | 7 | 9 |
| 2022 | 9 | 6 |
| 2023 | 6 | 25 |
| 2024 | 7 | 19 |
| 2025 | 11 | 26 |
| 2026 | 6 | 14 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Passivated silver nanoparticle coatings and methods of making the same21 Jul 2026US 12,686,050 B2Arizona Board of Regents on behalf of Arizona State University
- High temperature-resistant composite nanofiltration membrane and preparation method thereof9 Jun 2026US 12,649,128 B2Hunan Ovay Technology Co., Ltd.
- Method for producing gas separation membrane, and gas separation membrane10 Feb 2026US 12,544,720 B2Shinshu University
- Lithium extraction composite for recovery of lithium from brines, and process of using said composition20 Jan 2026US 12,528,056 B2All American Lithium LLC
- Hollow fiber composite membrane for water vapor separation, method for manufacturing the same, and device including the same20 Jan 2026US 12,528,057 B2Korea Institute of Energy Research
- Ion exchange membrane8 Oct 2026US 2026/0307020 A1Khalifa University of Science and Technology
- Conductive base membrane and preparation method thereof24 Sep 2026US 2026/0284606 A1Beijing Baoshengtong International Electrical Engineering Technology Co., Ltd.
- Purification process of ethyl formate27 Aug 2026US 2026/0249251 A1Taicang Hushi Reagent Co., Ltd.
- Polymer composite thin film, gas separation body provided with polymer composite thin film, gas separation device provided with polymer composite thin film, and manufacturing method for polymer composite thin film30 Jul 2026US 2026/0216663 A1NanoMembrane Technologies, Inc.
- Membranes for co2 capture2 Jul 2026US 2026/0183702 A1
Most cited
By later US patents
- Method of making microporous material23US 7,445,735 B2Daramic, LLC · 2008
- Method of making a microporous material10US 7,682,536 B2Daramic, LLC · 2010
- Porous multi-component material for the capture and separation of species of interest9US 9,370,749 B2Battelle Memorial Institute · 2016
- Porous inorganic membranes6US 5,232,598 ACeramesh Limited · 1993
- Additives for salt rejection enhancement of a membrane4US 9,861,940 B2LG Baboh2O, Inc. · 2018