B01D 71/521
Aliphatic polyethers
Official title: {Aliphatic polyethers}
B01D71/521 (Aliphatic polyethers) appears on 194 US grants and 257 published applications in this corpus.
Search patents in B01D- Granted patents
- 194
- Published applications
- 257
- Assignees
- 160
- Inventors
- 688
- Latest grant
- 14 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 2 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 4 | 0 |
| 1990 | 2 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 3 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 2 | 0 |
| 1997 | 2 | 0 |
| 1998 | 2 | 0 |
| 1999 | 5 | 0 |
| 2000 | 2 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 3 |
| 2003 | 0 | 4 |
| 2004 | 1 | 2 |
| 2005 | 3 | 3 |
| 2006 | 0 | 3 |
| 2007 | 2 | 1 |
| 2008 | 1 | 4 |
| 2009 | 1 | 2 |
| 2010 | 1 | 11 |
| 2011 | 5 | 5 |
| 2012 | 7 | 5 |
| 2013 | 3 | 7 |
| 2014 | 2 | 13 |
| 2015 | 2 | 15 |
| 2016 | 12 | 12 |
| 2017 | 7 | 20 |
| 2018 | 13 | 15 |
| 2019 | 11 | 21 |
| 2020 | 20 | 26 |
| 2021 | 17 | 13 |
| 2022 | 16 | 19 |
| 2023 | 12 | 14 |
| 2024 | 10 | 16 |
| 2025 | 8 | 10 |
| 2026 | 7 | 13 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- 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
- Cell concentration methods and devices for use in automated bioreactors21 Apr 2026US 12,606,792 B2Lonza Walkersville, Inc.
- Crosslinked facilitated transport membrane for hydrogen purification from coal-derived syngas31 Mar 2026US 12,589,363 B2Ohio State Innovation Foundation
- Polyether compound and gas separation membrane10 Mar 2026US 12,570,798 B2Zeon Corporation
- 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.
- Conductive flame retardant and breathable membrane16 Jul 2026US 2026/0199844 A1UC Bacon Company Limited
- Articles Including an Isoporous Membrane Disposed on a Porous Substrate and Methods of Making the Same11 Jun 2026US 2026/0158450 A1Thermo Fisher Scientific Inc.
- Membrane-based dehumidification system, thermally-insulative selective membrane, and method4 Jun 2026US 2026/0151729 A1Purdue Research Foundation
- Highly co2-selective asymmetric polymeric membranes and process for preparing the same30 Apr 2026US 2026/0115650 A1Sogang University Research & Business Development Foundation
Most cited
By later US patents
- 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
- Block copolymers131US 5,834,583 ACirce Biomedical, Inc. · 1998
- Semi-permeable membranes prepared via reaction of cationic groups with nucleophilic groups123US 4,704,324 AThe Dow Chemical Company · 1987
- Composite membrane, method of preparation and use106US 4,963,165 AMembrane Technology and Research, Inc. · 1990