C08J 5/2281
Fluorine containing heterogeneous membranes
Official title: {fluorine containing heterogeneous membranes}
C08J5/2281 (Fluorine containing heterogeneous membranes) appears on 174 US grants and 124 published applications in this corpus.
Search patents in C08J- Granted patents
- 174
- Published applications
- 124
- Assignees
- 94
- Inventors
- 355
- Latest grant
- 28 Apr 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 1 | 0 |
| 1978 | 2 | 0 |
| 1979 | 2 | 0 |
| 1980 | 2 | 0 |
| 1981 | 4 | 0 |
| 1982 | 5 | 0 |
| 1983 | 4 | 0 |
| 1984 | 8 | 0 |
| 1985 | 5 | 0 |
| 1986 | 4 | 0 |
| 1987 | 7 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 7 | 0 |
| 1991 | 6 | 0 |
| 1992 | 6 | 0 |
| 1993 | 4 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 3 | 0 |
| 2000 | 2 | 0 |
| 2001 | 1 | 2 |
| 2002 | 4 | 2 |
| 2003 | 2 | 7 |
| 2004 | 2 | 6 |
| 2005 | 3 | 9 |
| 2006 | 3 | 6 |
| 2007 | 4 | 8 |
| 2008 | 5 | 6 |
| 2009 | 3 | 7 |
| 2010 | 4 | 4 |
| 2011 | 6 | 3 |
| 2012 | 5 | 4 |
| 2013 | 3 | 6 |
| 2014 | 3 | 2 |
| 2015 | 6 | 4 |
| 2016 | 3 | 2 |
| 2017 | 1 | 8 |
| 2018 | 4 | 5 |
| 2019 | 6 | 4 |
| 2020 | 5 | 4 |
| 2021 | 4 | 3 |
| 2022 | 5 | 5 |
| 2023 | 2 | 4 |
| 2024 | 8 | 7 |
| 2025 | 3 | 2 |
| 2026 | 1 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Composite ion exchange membrane and method of making same28 Apr 2026US 12,612,496 B2
- Compositions for energy conversion and storage and methods of making the same2 Dec 2025US 12,489,131 B2Alliance for Sustainable Energy, LLC
- Fluoropolymer-based hybrid organic/inorganic composites19 Aug 2025US 12,391,819 B2Syensqo SA
- Membrane electrode assembly for COx reduction15 Jul 2025US 12,359,325 B2Twelve Benefit Corporation
- Anion exchange ionomer with a poyarylene backbone and anion exchange membrane incorporating same31 Dec 2024US 12,180,346 B2
- Composite ion-conducting membrane1 Oct 2026US 2026/0302300 A1Johnson Matthey Hydrogen Technologies Limited
- Membrane, membrane electrode assembly, and water electrolysis apparatus30 Jul 2026US 2026/0218402 A1Institute of Science Tokyo
- Electrolyte membrane including polyfluorene-based ionomer and manufacturing method thereof11 Jun 2026US 2026/0159627 A1Hyundai Motor Company
- Anion Exchange Ionomer With A Poyarylene Backbone and Anion Exchange Membrane Incorporating Same30 Apr 2026US 2026/0117034 A1USA Fortescue IP, Inc.
- Fiber reinforcement for ion exchange composite membrane6 Nov 2025US 2025/0339851 A1Solvay Specialty Polymers Italy S.P.A.
Most cited
By later US patents
- Electrolytic cell with composite, porous diaphragm164US 5,183,545 A1993
- Ion-exchange structures of copolymer blends useful in electrolytic cells88US 4,176,215 AE. I. Du Pont de Nemours and Company · 1979
- Fabric reinforced composite membrane69US 4,954,388 A1990
- Microporous PVDF films63US 7,338,692 B23M Innovative Properties Company · 2008
- Vapor permselective membrane59US 4,909,810 AAsahi Glass Company, Limited · 1990