B01D 2325/20
Specific permeability or cut-off range
B01D2325/20 (Specific permeability or cut-off range) appears on 760 US grants and 1,122 published applications in this corpus.
Search patents in B01D- Granted patents
- 760
- Published applications
- 1,122
- Assignees
- 571
- Inventors
- 2,675
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 2 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 4 | 0 |
| 1987 | 2 | 0 |
| 1988 | 4 | 0 |
| 1989 | 5 | 0 |
| 1990 | 6 | 0 |
| 1991 | 2 | 0 |
| 1992 | 4 | 0 |
| 1993 | 4 | 0 |
| 1994 | 5 | 0 |
| 1995 | 4 | 0 |
| 1996 | 5 | 0 |
| 1997 | 4 | 0 |
| 1998 | 10 | 0 |
| 1999 | 12 | 0 |
| 2000 | 7 | 0 |
| 2001 | 8 | 0 |
| 2002 | 4 | 7 |
| 2003 | 5 | 9 |
| 2004 | 10 | 5 |
| 2005 | 2 | 17 |
| 2006 | 4 | 19 |
| 2007 | 7 | 29 |
| 2008 | 8 | 27 |
| 2009 | 13 | 32 |
| 2010 | 20 | 35 |
| 2011 | 15 | 24 |
| 2012 | 21 | 25 |
| 2013 | 18 | 35 |
| 2014 | 21 | 17 |
| 2015 | 18 | 63 |
| 2016 | 27 | 54 |
| 2017 | 45 | 62 |
| 2018 | 36 | 50 |
| 2019 | 49 | 70 |
| 2020 | 43 | 82 |
| 2021 | 62 | 100 |
| 2022 | 52 | 69 |
| 2023 | 44 | 74 |
| 2024 | 54 | 83 |
| 2025 | 51 | 61 |
| 2026 | 41 | 73 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Point of use or point of dispense filter with multiple pleat packs15 Sep 2026US 12,734,488 B2Entegris, Inc.
- Purification of oligosaccharides from a fermentation broth by using filtration15 Sep 2026US 12,735,443 B2Chr. Hansen A/S
- Preparation method of milk oligosaccharides and oligosaccharide powder and food prepared thereby15 Sep 2026US 12,735,512 B2Beijing Sanyuan Foods Co., Ltd.
- Cross-linkable polymer compositions and applications thereof8 Sep 2026US 12,729,261 B2Notark Corporation
- Gas separation membrane, and preparation method therefor and use thereof25 Aug 2026US 12,714,972 B2Changshu 3F Zhonghao New Chemical Materials Co., Ltd.
- Concentrated milk protein preparations8 Oct 2026US 2026/0305634 A150G Inc.
- Substrate for liquid filter and liquid filter8 Oct 2026US 2026/0307016 A1Teijin Limited
- Method for producing bioethanol and device for producing bioethanol8 Oct 2026US 2026/0308643 A1ARKHE Co., Ltd.
- Composite separator for gas separation24 Sep 2026US 2026/0284586 A1SK ie technology Co., Ltd.
- Integrated fluidic devices and related methods17 Sep 2026US 2026/0273523 A1HelixBind, Inc.
Most cited
By later US patents
- Asymmetric membranes315US 4,629,563 ABrunswick Corporation · 1986
- Porous PTFE materials and articles produced therefrom267US 7,306,729 B2Gore Enterprise Holdings, Inc. · 2007
- Porpous PTFE film and a manufacturing method therefor264US 5,476,589 AW. L. Gore & Associates, Inc. · 1995
- Highly air permeable expanded polytetrafluoroethylene membranes and process for making them115US 4,902,423 AW. L. Gore & Associates, Inc. · 1990
- Highly porous polyvinylidene difluoride membranes115US 6,146,747 AUSF Filtration and Separations Group, Inc. · 2000