B01D 2325/0231
Dense layers being placed on the outer side of the cross-section
B01D2325/0231 (Dense layers being placed on the outer side of the cross-section) appears on 53 US grants and 91 published applications in this corpus.
Search patents in B01D- Granted patents
- 53
- Published applications
- 91
- Assignees
- 78
- Inventors
- 289
- Latest grant
- 11 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 1 |
| 2003 | 0 | 2 |
| 2004 | 1 | 4 |
| 2005 | 1 | 4 |
| 2006 | 1 | 3 |
| 2007 | 4 | 2 |
| 2008 | 2 | 3 |
| 2009 | 2 | 0 |
| 2010 | 1 | 4 |
| 2011 | 0 | 0 |
| 2012 | 3 | 4 |
| 2013 | 1 | 3 |
| 2014 | 0 | 1 |
| 2015 | 2 | 2 |
| 2016 | 3 | 4 |
| 2017 | 2 | 6 |
| 2018 | 1 | 3 |
| 2019 | 5 | 5 |
| 2020 | 7 | 3 |
| 2021 | 2 | 5 |
| 2022 | 2 | 4 |
| 2023 | 1 | 7 |
| 2024 | 2 | 11 |
| 2025 | 3 | 4 |
| 2026 | 4 | 6 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Collecting filter and method for manufacturing transparent conducting film using the same11 Aug 2026US 12,702,956 B2Denso Corporation
- Separation membrane and manufacturing method therefor3 Mar 2026US 12,564,817 B2Toray Industries, Inc.
- Hollow fiber membranes with polydiorganosiloxane polyoxamide copolymer skin layer and methods of making and using the same24 Feb 2026US 12,558,654 B23M Innovative Properties Company
- Large-scale fabrication technique for PIM-1 asymmetric membranes doped with low-molecular-weight polyethylene glycol for gas separation13 Jan 2026US 12,521,681 B2Dalian University of Technology
- Carbon hollow fibre membrane23 Dec 2025US 12,502,645 B2Norwegian University of Science and Technology (Ntnu)
- Polyamide-based mixed matrix membrane for oil-water separation24 Sep 2026US 2026/0286076 A1King Fahd University of Petroleum and Minerals
- Fabrication of membranes via combined evaporation and precipitant induced phase separation10 Sep 2026US 2026/0264022 A1Sartorius Stedim Biotech GmbH
- Hollow fiber membrane, method for manufacturing hollow fiber membrane, and hollow fiber membrane module6 Aug 2026US 2026/0225043 A1Toray Industries, Inc.
- Polyelectrolyte coacervate membranes and methods for the manufacture thereof23 Apr 2026US 2026/0108851 A1University of Massachusetts
- Asymmetric Hollow Fiber Membrane12 Mar 2026US 2026/0070024 A1Solventum Intellectual Properties Company
Most cited
By later US patents
- Method of making a product with a micro or nano sized structure and product158US 7,531,120 B2Aquamarijn Holding B.V. · 2009
- Poly(ethylene chlorotrifluoroethylene) membranes80US 7,247,238 B2Siemens Water Technologies Corp. · 2007
- Hollow fibers production method thereof and their applications particularly in the field of membrane-type separations69US 4,882,223 ACentre National De La Recherche Scientifique · 1989
- Membrane polymer compositions68US 7,226,541 B2Siemens Water Technology Corp. · 2007
- Polysulfone-based hollow fiber membrane and process for manufacturing the same65US 5,340,480 AKuraray Co., Ltd. · 1994