B01D 2325/04
Characteristic thickness
B01D2325/04 (Characteristic thickness) appears on 807 US grants and 1,225 published applications in this corpus.
Search patents in B01D- Granted patents
- 807
- Published applications
- 1,225
- Assignees
- 608
- Inventors
- 2,946
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 5 | 0 |
| 1987 | 5 | 0 |
| 1988 | 3 | 0 |
| 1989 | 5 | 0 |
| 1990 | 9 | 0 |
| 1991 | 3 | 0 |
| 1992 | 8 | 0 |
| 1993 | 13 | 0 |
| 1994 | 6 | 0 |
| 1995 | 10 | 0 |
| 1996 | 8 | 0 |
| 1997 | 12 | 0 |
| 1998 | 13 | 0 |
| 1999 | 10 | 0 |
| 2000 | 12 | 0 |
| 2001 | 10 | 3 |
| 2002 | 10 | 12 |
| 2003 | 15 | 16 |
| 2004 | 7 | 17 |
| 2005 | 6 | 23 |
| 2006 | 10 | 25 |
| 2007 | 12 | 20 |
| 2008 | 15 | 15 |
| 2009 | 11 | 23 |
| 2010 | 12 | 26 |
| 2011 | 16 | 20 |
| 2012 | 12 | 26 |
| 2013 | 14 | 24 |
| 2014 | 16 | 21 |
| 2015 | 15 | 43 |
| 2016 | 16 | 62 |
| 2017 | 35 | 73 |
| 2018 | 36 | 48 |
| 2019 | 44 | 65 |
| 2020 | 53 | 92 |
| 2021 | 55 | 103 |
| 2022 | 54 | 86 |
| 2023 | 42 | 95 |
| 2024 | 57 | 118 |
| 2025 | 64 | 93 |
| 2026 | 45 | 76 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Hollow fiber microporous membrane, and gas separation membrane module with same built thereinto6 Oct 2026US 12,752,243 B2Toray Industries, Inc.
- Method of forming a cross-linked polymeric membrane29 Sep 2026US 12,746,516 B2Seppure Pte Ltd
- Ion exchange membrane composition and methods for the concentration of perfluoroalkyl substances29 Sep 2026US 12,747,172 B2Evoqua Water Technologies LLC
- Dual-layer hollow fiber membranes and methods of making and use22 Sep 2026US 12,741,269 B2The Regents of the University of Michigan
- Palladium-based membrane25 Aug 2026US 12,715,767 B2National University of Singapore
- Porous membrane and purification method8 Oct 2026US 2026/0307015 A1Toyobo Co., Ltd.
- Substrate for liquid filter and liquid filter8 Oct 2026US 2026/0307016 A1Teijin Limited
- Composite separator for gas separation24 Sep 2026US 2026/0284586 A1SK ie technology Co., Ltd.
- Porous hollow fiber membrane and blood purification module24 Sep 2026US 2026/0284607 A1Toray Industries, Inc.
- Substrate for liquid filter and liquid filter17 Sep 2026US 2026/0273473 A1Teijin Limited
Most cited
By later US patents
- Porpous PTFE film and a manufacturing method therefor264US 5,476,589 AW. L. Gore & Associates, Inc. · 1995
- Membrane filter and a method of manufacturing the same as well as a membrane218US 5,753,014 A1998
- Composite hydrogen separation element and module185US 5,498,278 ABend Research, Inc. · 1996
- Microfabricated filter with specially constructed channel walls, and containment well and capsule constructed with such filters171US 5,798,042 AThe Regents of the University of California · 1998
- Composite hydrogen separation element and module164US 5,645,626 ABend Research, Inc. · 1997