B01D 2323/46
Impregnation
B01D2323/46 (Impregnation) appears on 135 US grants and 211 published applications in this corpus.
Search patents in B01D- Granted patents
- 135
- Published applications
- 211
- Assignees
- 156
- Inventors
- 626
- Latest grant
- 10 Mar 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 2 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 1 |
| 2003 | 0 | 2 |
| 2004 | 0 | 0 |
| 2005 | 0 | 9 |
| 2006 | 2 | 6 |
| 2007 | 2 | 6 |
| 2008 | 4 | 3 |
| 2009 | 2 | 7 |
| 2010 | 3 | 5 |
| 2011 | 4 | 4 |
| 2012 | 3 | 8 |
| 2013 | 5 | 9 |
| 2014 | 6 | 7 |
| 2015 | 7 | 19 |
| 2016 | 3 | 8 |
| 2017 | 9 | 17 |
| 2018 | 7 | 18 |
| 2019 | 13 | 11 |
| 2020 | 16 | 15 |
| 2021 | 6 | 12 |
| 2022 | 5 | 9 |
| 2023 | 9 | 9 |
| 2024 | 4 | 12 |
| 2025 | 12 | 9 |
| 2026 | 3 | 5 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Bipolar membrane10 Mar 2026US 12,569,812 B2Astom Corporation
- Ceramic nanofiltration membrane with polymers grafted into the pores and method of producing same10 Mar 2026US 12,569,816 B2Vito NV
- Composite membrane6 Jan 2026US 12,515,175 B2FUJIFILM Corporation
- Composite membrane and method of making the same2 Dec 2025US 12,485,388 B2H2Mo Technology Pte Ltd
- Monovalent anion selective ion exchange membrane9 Sep 2025US 12,410,290 B2Toray Advanced Materials Korea Inc.
- Separation methods and systems13 Aug 2026US 2026/0233170 A1Altr Fltr Inc.
- Nanofiltration membrane based on carbon nanotube fibers and method for fabricating the same30 Jul 2026US 2026/0216657 A1Institute of Physics, Chinese Academy of Sciences
- Ceramic nanofiltration membrane with polymers grafted into the pores and method of producing same2 Jul 2026US 2026/0183722 A1Vito NV
- Composite membrane and method of making the same26 Feb 2026US 2026/0054227 A1H2Mo Technology Pte Ltd
- Method of Preparing Polyamide Membrane with Multi-Level Pore Structure Mediated by Protein Fiber Network19 Feb 2026US 2026/0048364 A1Harbin Institute of Technology
Most cited
By later US patents
- Purification of fluids with nanomaterials104US 7,211,320 B1Seldon Technologies, LLC · 2007
- Nanomesh article and method of using the same for purifying fluids88US 7,419,601 B2Seldon Technologies, LLC · 2008
- Method for continuous fabrication of carbon nanotube networks or membrane materials84US 7,459,121 B2The Florida State University Research Foundation, Inc. · 2008
- Microporous PVDF films63US 7,338,692 B23M Innovative Properties Company · 2008
- Process for preparing a composite inorganic membrane for hydrogen separation38US 5,782,959 AKorea Advanced Institute of Science and Technology · 1998