B01D 69/141
Heterogeneous membranes
Official title: {Heterogeneous membranes, e.g. containing dispersed material; Mixed matrix membranes}
B01D69/141 (Heterogeneous membranes) appears on 1,307 US grants and 1,749 published applications in this corpus.
Search patents in B01D- Granted patents
- 1,307
- Published applications
- 1,749
- Assignees
- 926
- Inventors
- 4,419
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 7 | 0 |
| 1977 | 6 | 0 |
| 1978 | 5 | 0 |
| 1979 | 3 | 0 |
| 1980 | 8 | 0 |
| 1981 | 5 | 0 |
| 1982 | 3 | 0 |
| 1983 | 4 | 0 |
| 1984 | 4 | 0 |
| 1985 | 3 | 0 |
| 1986 | 9 | 0 |
| 1987 | 7 | 0 |
| 1988 | 10 | 0 |
| 1989 | 7 | 0 |
| 1990 | 12 | 0 |
| 1991 | 14 | 0 |
| 1992 | 11 | 0 |
| 1993 | 9 | 0 |
| 1994 | 4 | 0 |
| 1995 | 16 | 0 |
| 1996 | 15 | 0 |
| 1997 | 19 | 0 |
| 1998 | 17 | 0 |
| 1999 | 13 | 0 |
| 2000 | 16 | 0 |
| 2001 | 26 | 6 |
| 2002 | 13 | 42 |
| 2003 | 26 | 31 |
| 2004 | 16 | 39 |
| 2005 | 19 | 46 |
| 2006 | 21 | 46 |
| 2007 | 24 | 41 |
| 2008 | 24 | 29 |
| 2009 | 21 | 62 |
| 2010 | 28 | 53 |
| 2011 | 28 | 49 |
| 2012 | 34 | 54 |
| 2013 | 36 | 73 |
| 2014 | 35 | 65 |
| 2015 | 50 | 81 |
| 2016 | 49 | 77 |
| 2017 | 40 | 55 |
| 2018 | 65 | 85 |
| 2019 | 62 | 92 |
| 2020 | 65 | 117 |
| 2021 | 74 | 116 |
| 2022 | 69 | 107 |
| 2023 | 75 | 102 |
| 2024 | 62 | 104 |
| 2025 | 76 | 103 |
| 2026 | 42 | 74 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Dual-layer hollow fiber membranes and methods of making and use22 Sep 2026US 12,741,269 B2The Regents of the University of Michigan
- Ruthenium promoter catalyst compositions15 Sep 2026US 12,735,324 B2Commonwealth Scientific and Industrial Research Organisation
- Semiconductive and proton-conductive porous hydrogen-bonded frameworks4 Aug 2026US 12,697,593 B2Technische UniversitäT Berlin
- Method for manufacturing a separation membrane based on a polar carbon nanotube dispersion and a polar one-dimensional carbon body28 Jul 2026US 12,691,418 B2Industry-Academic Cooperation Foundation, Yonsei University
- Preparation of metallocene containing cationic polymers for anion exchange applications28 Jul 2026US 12,691,419 B2University of South Carolina
- Multifunctional filter materials8 Oct 2026US 2026/0305741 A1Khalifa University of Science and Technology
- Ion exchange membrane8 Oct 2026US 2026/0307020 A1Khalifa University of Science and Technology
- Systems and methods for using facilitated transport membranes to separate olefins and paraffins8 Oct 2026US 2026/0308087 A1
- Method for producing bioethanol and device for producing bioethanol8 Oct 2026US 2026/0308643 A1ARKHE Co., Ltd.
- Treated microporous membrane24 Sep 2026US 2026/0284603 A1PPG Industries Ohio, Inc.
Most cited
By later US patents
- Techniques to improve polyurethane membranes for implantable glucose sensors1,046US 7,226,978 B2DexCom, Inc. · 2007
- Ionic semiconductor materials and applications thereof795US 5,055,171 AT and G Corporation · 1991
- Preparation of crosslinked matrices containing covalently immobilized chemical species and unbound releasable chemical species253US 5,563,056 ABSI Corporation · 1996
- Ultra-thin integral composite membrane242US 5,547,551 AW. L. Gore & Associates, Inc. · 1996
- Method of making polytetrafluoroethylene composite sheet203US 4,153,661 AMinnesota Mining and Manufacturing Company · 1979