B01D 71/52
Polyethers
B01D71/52 (Polyethers) appears on 476 US grants and 561 published applications in this corpus.
Search patents in B01D- Granted patents
- 476
- Published applications
- 561
- Assignees
- 324
- Inventors
- 1,481
- Latest grant
- 18 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 2 | 0 |
| 1979 | 1 | 0 |
| 1980 | 2 | 0 |
| 1981 | 4 | 0 |
| 1982 | 1 | 0 |
| 1983 | 2 | 0 |
| 1984 | 7 | 0 |
| 1985 | 3 | 0 |
| 1986 | 8 | 0 |
| 1987 | 9 | 0 |
| 1988 | 4 | 0 |
| 1989 | 6 | 0 |
| 1990 | 11 | 0 |
| 1991 | 10 | 0 |
| 1992 | 10 | 0 |
| 1993 | 6 | 0 |
| 1994 | 7 | 0 |
| 1995 | 3 | 0 |
| 1996 | 6 | 0 |
| 1997 | 4 | 0 |
| 1998 | 3 | 0 |
| 1999 | 6 | 0 |
| 2000 | 5 | 0 |
| 2001 | 4 | 0 |
| 2002 | 4 | 12 |
| 2003 | 9 | 9 |
| 2004 | 3 | 16 |
| 2005 | 10 | 17 |
| 2006 | 3 | 15 |
| 2007 | 11 | 8 |
| 2008 | 8 | 9 |
| 2009 | 5 | 10 |
| 2010 | 8 | 19 |
| 2011 | 9 | 11 |
| 2012 | 11 | 14 |
| 2013 | 6 | 13 |
| 2014 | 9 | 20 |
| 2015 | 9 | 32 |
| 2016 | 21 | 16 |
| 2017 | 14 | 41 |
| 2018 | 15 | 29 |
| 2019 | 24 | 36 |
| 2020 | 35 | 38 |
| 2021 | 22 | 29 |
| 2022 | 28 | 37 |
| 2023 | 23 | 36 |
| 2024 | 29 | 47 |
| 2025 | 20 | 26 |
| 2026 | 16 | 21 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Thin-film composite membranes synthesized by multi-step coating methods18 Aug 2026US 12,708,881 B2Katholieke Universiteit Leuven
- Membrane-dehumidification technologies for electronic component protection14 Jul 2026US 12,678,732 B2Purdue Research Foundation
- System and method for dual-pathway system for carbon dioxide capture from ocean water30 Jun 2026US 12,668,518 B2California Institute of Technology
- Membrane deoxygenation with enhanced structural integrity9 Jun 2026US 12,650,105 B2Hamilton Sundstrand Corporation
- Membrane comprising a blend of polyarylethersulfone and polyaryletherketone and method for manufacturing thereof19 May 2026US 12,630,706 B2Syensqo Specialty Polymers USA, LLC
- Polyether Sulfone Copolymers and Articles Prepared Therefrom8 Oct 2026US 2026/0308326 A1Thermo Fisher Bioprocessing Inc.
- Membrane comprising a blend of polyarylethersulfone and polyaryletherketone and method for manufacturing thereof3 Sep 2026US 2026/0258241 A1Syensqo Specialty Polymers USA, LLC
- Polysilsesquioxane/polyetheretherketone composite membranes and methods for preparing the same27 Aug 2026US 2026/0249250 A1Changzhou University
- Method for purifying 1,1,1,2,3,3-hexafluoropropane27 Aug 2026US 2026/0250221 A1Arkema France
- Polymer composite thin film, gas separation body provided with polymer composite thin film, gas separation device provided with polymer composite thin film, and manufacturing method for polymer composite thin film30 Jul 2026US 2026/0216663 A1NanoMembrane Technologies, Inc.
Most cited
By later US patents
- Composite solid polymer electrolyte membranes346US 7,550,216 B2Foster-Miller, Inc. · 2009
- Preparation of crosslinked matrices containing covalently immobilized chemical species and unbound releasable chemical species253US 5,563,056 ABSI Corporation · 1996
- Process for the manufacture of an ophthalmic molding244US 6,039,913 ANovartis AG · 2000
- Method of making membranes for gas separation and the composite membranes163US 4,602,922 AThe Research Foundation of State University of New York · 1986
- Composite solid polymer electrolyte membranes158US 6,248,469 B1Foster-Miller, Inc. · 2001