B01D 69/06
Flat membranes
B01D69/06 (Flat membranes) appears on 317 US grants and 462 published applications in this corpus.
Search patents in B01D- Granted patents
- 317
- Published applications
- 462
- Assignees
- 275
- Inventors
- 1,196
- Latest grant
- 11 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 2 | 0 |
| 1989 | 3 | 0 |
| 1990 | 7 | 0 |
| 1991 | 2 | 0 |
| 1992 | 2 | 0 |
| 1993 | 0 | 0 |
| 1994 | 2 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 2 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 1 | 1 |
| 2003 | 1 | 2 |
| 2004 | 1 | 4 |
| 2005 | 0 | 6 |
| 2006 | 2 | 9 |
| 2007 | 3 | 3 |
| 2008 | 1 | 4 |
| 2009 | 2 | 10 |
| 2010 | 2 | 6 |
| 2011 | 6 | 18 |
| 2012 | 4 | 9 |
| 2013 | 12 | 16 |
| 2014 | 6 | 9 |
| 2015 | 6 | 27 |
| 2016 | 14 | 24 |
| 2017 | 15 | 29 |
| 2018 | 11 | 22 |
| 2019 | 26 | 45 |
| 2020 | 42 | 47 |
| 2021 | 30 | 48 |
| 2022 | 25 | 27 |
| 2023 | 25 | 24 |
| 2024 | 17 | 27 |
| 2025 | 25 | 26 |
| 2026 | 12 | 19 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Collecting filter and method for manufacturing transparent conducting film using the same11 Aug 2026US 12,702,956 B2Denso Corporation
- Formed sheet membrane element and filtration system4 Aug 2026US 12,697,586 B2Fibracast Ltd.
- Filter holder for extrusion of liposomes28 Jul 2026US 12,691,421 B2Evonik Operations GmbH
- Method for preparing a novel guanidine-based composite nanofiltration flat-sheet membrane21 Jul 2026US 12,685,969 B2Tongji University
- Porous membranes for high pressure filtration7 Jul 2026US 12,673,303 B2Syensqo Specialty Polymers USA, LLC
- Gas separation membrane module1 Oct 2026US 2026/0295536 A1Honda Motor Co., Ltd.
- Preservation solution for separation membrane and water treatment separation membrane packaging container comprising same10 Sep 2026US 2026/0264021 A1Toray Advanced Materials Korea Inc.
- Filtration membrane with improved hydrophilicity10 Sep 2026US 2026/0264027 A1BASF SE
- Gap-varying, lifted hele-shaw cell (lhsc) for controlled liquid film flow and devices containing the same3 Sep 2026US 2026/0257176 A1Achira Labs Private Limited
- Method for manufacturing a free standing membrane and method for forming an electroplated layer using a free standing membrane13 Aug 2026US 2026/0233169 A1Korea Advanced Institute of Science and Technology
Most cited
By later US patents
- Dialyzing membrane with adsorbent layer122US 4,267,047 AAkzo N.V. of Arnhem/Nederland · 1981
- Filter element having microporous membrane58US 4,929,354 ACuno Incorporated · 1990
- Knurled sheetlike permeable membrane, for production thereof, and body fluid filtering apparatus54US 5,094,749 ATerumo Kabushiki Kaisha · 1992
- Macroporous or microporous filtration membrane, method of preparation and use51US 5,993,661 AThe Research Foundation of State University of New York · 1999
- Instruments, modules, and methods for improved detection of edited sequences in live cells49US 10,533,152 B1Inscripta, Inc. · 2020