B01D 46/543
Using membranes
Official title: {using membranes}
B01D46/543 (Using membranes) appears on 203 US grants and 252 published applications in this corpus.
Search patents in B01D- Granted patents
- 203
- Published applications
- 252
- Assignees
- 155
- Inventors
- 600
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 2 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 3 | 0 |
| 1989 | 1 | 0 |
| 1990 | 2 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 2 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 2 | 0 |
| 2000 | 3 | 0 |
| 2001 | 3 | 0 |
| 2002 | 4 | 1 |
| 2003 | 2 | 4 |
| 2004 | 3 | 2 |
| 2005 | 2 | 5 |
| 2006 | 0 | 4 |
| 2007 | 3 | 0 |
| 2008 | 3 | 5 |
| 2009 | 1 | 7 |
| 2010 | 3 | 5 |
| 2011 | 1 | 9 |
| 2012 | 6 | 8 |
| 2013 | 7 | 11 |
| 2014 | 7 | 8 |
| 2015 | 8 | 18 |
| 2016 | 8 | 11 |
| 2017 | 13 | 11 |
| 2018 | 5 | 10 |
| 2019 | 11 | 16 |
| 2020 | 13 | 18 |
| 2021 | 12 | 25 |
| 2022 | 14 | 18 |
| 2023 | 14 | 21 |
| 2024 | 13 | 12 |
| 2025 | 16 | 12 |
| 2026 | 11 | 11 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Preparation method of bismuth ion filter membrane and application thereof15 Sep 2026US 12,734,470 B2Work Together Marketing Consultant Limited
- Point of use or point of dispense filter with multiple pleat packs15 Sep 2026US 12,734,488 B2Entegris, Inc.
- Air filtration system and set of profiles and accessories for sealing and creation of a sealed or partially sealed environment with controlled airflow4 Aug 2026US 12,697,574 B2
- Downhole membrane system to control natural gas production28 Jul 2026US 12,692,451 B2Saudi Arabian Oil Company
- Mask7 Jul 2026US 12,673,225 B2
- Adsorbent filter assembly1 Oct 2026US 2026/0295488 A1Donaldson Company, Inc.
- Communicating filter plants27 Aug 2026US 2026/0249226 A1Kappa Filter Systems GmbH
- Waterproof member and waterproof case30 Jul 2026US 2026/0216629 A1Nitto Denko Corporation
- Reduction Of The CO2 Concentration In A CO2 Incubator23 Jul 2026US 2026/0209677 A1Thermo Electron LED GmbH
- Filter medium, filter pack, and filter unit9 Jul 2026US 2026/0192231 A1Daikin Industries, Ltd.
Most cited
By later US patents
- Filter element with membrane and bicomponent substrate109US 6,110,249 ABHA Technologies, Inc. · 2000
- Devices, systems and methods for elution of particles from flat filters79US 8,584,536 B2InnovaPrep LLC · 2013
- Predicting logarithmic reduction values72US 6,202,475 B1USF Filtration and Separations Group, Inc. · 2001
- Devices, systems and methods for elution of particles from flat filters72US 9,534,989 B2InnovaPrep LLC · 2017
- Fluid purification system56US 4,083,780 AEnvirogenics Systems Company · 1978