B01D 69/08
Hollow fibre membranes
Official title: Hollow fibre membranes (manufacture of hollow fibres D01D5/24, D01F1/08)
B01D69/08 (Hollow fibre membranes) appears on 1,390 US grants and 1,531 published applications in this corpus.
Search patents in B01D- Granted patents
- 1,390
- Published applications
- 1,531
- Assignees
- 656
- Inventors
- 3,326
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 10 | 0 |
| 1978 | 9 | 0 |
| 1979 | 2 | 0 |
| 1980 | 8 | 0 |
| 1981 | 13 | 0 |
| 1982 | 14 | 0 |
| 1983 | 11 | 0 |
| 1984 | 12 | 0 |
| 1985 | 7 | 0 |
| 1986 | 7 | 0 |
| 1987 | 15 | 0 |
| 1988 | 17 | 0 |
| 1989 | 34 | 0 |
| 1990 | 26 | 0 |
| 1991 | 15 | 0 |
| 1992 | 22 | 0 |
| 1993 | 23 | 0 |
| 1994 | 18 | 0 |
| 1995 | 15 | 0 |
| 1996 | 16 | 0 |
| 1997 | 15 | 0 |
| 1998 | 19 | 0 |
| 1999 | 27 | 0 |
| 2000 | 12 | 0 |
| 2001 | 13 | 5 |
| 2002 | 20 | 13 |
| 2003 | 23 | 28 |
| 2004 | 12 | 29 |
| 2005 | 15 | 35 |
| 2006 | 10 | 27 |
| 2007 | 23 | 33 |
| 2008 | 16 | 32 |
| 2009 | 17 | 34 |
| 2010 | 17 | 43 |
| 2011 | 20 | 51 |
| 2012 | 30 | 59 |
| 2013 | 36 | 62 |
| 2014 | 48 | 56 |
| 2015 | 44 | 89 |
| 2016 | 46 | 95 |
| 2017 | 58 | 98 |
| 2018 | 60 | 77 |
| 2019 | 62 | 119 |
| 2020 | 70 | 103 |
| 2021 | 93 | 97 |
| 2022 | 69 | 93 |
| 2023 | 60 | 66 |
| 2024 | 70 | 80 |
| 2025 | 51 | 52 |
| 2026 | 36 | 55 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
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
- Dual-layer hollow fiber membranes and methods of making and use22 Sep 2026US 12,741,269 B2The Regents of the University of Michigan
- Method for filling a membrane1 Sep 2026US 12,721,938 B2Fresenius Medical Care Deutschland GmbH
- Palladium-based membrane25 Aug 2026US 12,715,767 B2National University of Singapore
- Polyether Sulfone Copolymers and Articles Prepared Therefrom8 Oct 2026US 2026/0308326 A1Thermo Fisher Bioprocessing Inc.
- Modular multi-filter systems and methods of use1 Oct 2026US 2026/0295538 A1Pentair Water Pool and Spa, Inc.
- Hollow fiber membranes comprising a poly(aryl ether sulfone) and a water-soluble polymer additive1 Oct 2026US 2026/0295540 A1BASF SE
- Systems for catalytically removing per- and polyfluoroalkyl substances from a fluid and related methods1 Oct 2026US 2026/0296939 A1Arizona Board of Regents on behalf of Arizona State University
- Conductive hollow fiber membrane and preparation method thereof and membrane assembly24 Sep 2026US 2026/0284601 A1Cangzhou Institute of Tiangong University
Most cited
By later US patents
- Surface-modifying endgroups for biomedical polymers517US 5,589,563 AThe Polymer Technology Group · 1996
- Systems for premeating molecules of predetermined molecular weight range361US 5,756,632 AThe Polymer Technology Group · 1998
- Multicomponent membranes for gas separations355US 4,230,463 AMonsanto Company · 1980
- Copolymers and non-porous, semi-permeable membrane thereof and its use for permeating molecules of predetermined molecular weight range303US 5,428,123 AThe Polymer Technology Group · 1995
- Process for preparing hydrophilic polyamide membrane filter media and product277US 4,340,479 APall Corporation · 1982