B01D 71/5223
Polyphenylene oxide, phenyl ether polymers or polyphenylethers
Official title: {Polyphenylene oxide, phenyl ether polymers or polyphenylethers}
B01D71/5223 (Polyphenylene oxide, phenyl ether polymers or polyphenylethers) appears on 77 US grants and 65 published applications in this corpus.
Search patents in B01D- Granted patents
- 77
- Published applications
- 65
- Assignees
- 64
- Inventors
- 237
- Latest grant
- 18 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 6 | 0 |
| 1985 | 2 | 0 |
| 1986 | 2 | 0 |
| 1987 | 4 | 0 |
| 1988 | 2 | 0 |
| 1989 | 0 | 0 |
| 1990 | 4 | 0 |
| 1991 | 1 | 0 |
| 1992 | 2 | 0 |
| 1993 | 0 | 0 |
| 1994 | 2 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 2 | 0 |
| 2001 | 3 | 0 |
| 2002 | 1 | 1 |
| 2003 | 1 | 0 |
| 2004 | 0 | 1 |
| 2005 | 0 | 0 |
| 2006 | 1 | 1 |
| 2007 | 1 | 0 |
| 2008 | 1 | 2 |
| 2009 | 0 | 4 |
| 2010 | 0 | 2 |
| 2011 | 1 | 1 |
| 2012 | 1 | 2 |
| 2013 | 2 | 1 |
| 2014 | 2 | 1 |
| 2015 | 0 | 7 |
| 2016 | 7 | 3 |
| 2017 | 0 | 5 |
| 2018 | 1 | 2 |
| 2019 | 3 | 4 |
| 2020 | 3 | 2 |
| 2021 | 2 | 5 |
| 2022 | 0 | 6 |
| 2023 | 5 | 4 |
| 2024 | 4 | 3 |
| 2025 | 3 | 6 |
| 2026 | 3 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Thin-film composite membranes synthesized by multi-step coating methods18 Aug 2026US 12,708,881 B2Katholieke Universiteit Leuven
- Crosslinked facilitated transport membrane for hydrogen purification from coal-derived syngas31 Mar 2026US 12,589,363 B2Ohio State Innovation Foundation
- PPO based film with high surface area and procedures for the obtainment thereof17 Mar 2026US 12,576,366 B2MATERIAS S.r.l.
- Methods for making sulfonated poly(phenylene ether) and articles made therefrom26 Aug 2025US 12,398,238 B2Shpp Global Technologies B.V.
- Composite membrane and method for producing composite membrane29 Jul 2025US 12,370,503 B2Toyobo Co., Ltd.
- Oxidation resistant membranes30 Jul 2026US 2026/0216669 A1BASF SE
- Raw Material Solution Concentration System30 Apr 2026US 2026/0115663 A1Asahi Kasei Kabushiki Kaisha
- Sulfonated poly(phenylene ether) and methods for the manufacture thereof11 Dec 2025US 2025/0376560 A1Shpp Global Technologies B.V.
- Block copolymer composition and anion exchange membranes made therefrom19 Jun 2025US 2025/0197627 A1Notark Corporation
- Flow distributor and void reduction device29 May 2025US 2025/0170497 A1Merck Millipore Ltd.
Most cited
By later US patents
- 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
- Crosslinked ion conductive membranes49US 6,090,895 A3M Innovative Properties Company · 2000
- Gas separations utilizing glassy polymer membranes at sub-ambient temperatures42US 5,352,272 AThe Dow Chemical Company · 1994
- Gas separation membrane40US 4,950,314 AToray Industries, Inc. · 1990