C08J 5/2237
Containing fluorine
Official title: {containing fluorine}
C08J5/2237 (Containing fluorine) appears on 313 US grants and 271 published applications in this corpus.
Search patents in C08J- Granted patents
- 313
- Published applications
- 271
- Assignees
- 131
- Inventors
- 668
- Latest grant
- 23 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 5 | 0 |
| 1978 | 8 | 0 |
| 1979 | 10 | 0 |
| 1980 | 7 | 0 |
| 1981 | 8 | 0 |
| 1982 | 10 | 0 |
| 1983 | 7 | 0 |
| 1984 | 9 | 0 |
| 1985 | 6 | 0 |
| 1986 | 4 | 0 |
| 1987 | 7 | 0 |
| 1988 | 3 | 0 |
| 1989 | 3 | 0 |
| 1990 | 4 | 0 |
| 1991 | 1 | 0 |
| 1992 | 3 | 0 |
| 1993 | 2 | 0 |
| 1994 | 0 | 0 |
| 1995 | 4 | 0 |
| 1996 | 1 | 0 |
| 1997 | 2 | 0 |
| 1998 | 2 | 0 |
| 1999 | 0 | 0 |
| 2000 | 5 | 0 |
| 2001 | 3 | 0 |
| 2002 | 3 | 4 |
| 2003 | 1 | 7 |
| 2004 | 5 | 12 |
| 2005 | 4 | 15 |
| 2006 | 4 | 16 |
| 2007 | 6 | 17 |
| 2008 | 4 | 4 |
| 2009 | 6 | 13 |
| 2010 | 8 | 14 |
| 2011 | 10 | 18 |
| 2012 | 8 | 10 |
| 2013 | 14 | 16 |
| 2014 | 17 | 10 |
| 2015 | 10 | 8 |
| 2016 | 8 | 11 |
| 2017 | 11 | 13 |
| 2018 | 9 | 13 |
| 2019 | 10 | 11 |
| 2020 | 15 | 13 |
| 2021 | 10 | 12 |
| 2022 | 7 | 13 |
| 2023 | 7 | 5 |
| 2024 | 9 | 6 |
| 2025 | 10 | 5 |
| 2026 | 2 | 5 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Electrolyte material, membrane electrode assembly and polymer electrolyte fuel cell23 Jun 2026US 12,665,210 B2AGC Inc.
- Porous membrane including perfluoroalkoxy alkane (PFA)-based melt-extruded film and having pores controlled by biaxial stretching, and manufacturing method therefor13 Jan 2026US 12,521,694 B2Pukyong National University Industry-University Cooperation Foundation
- Bipolar ionomer membrane4 Nov 2025US 12,463,229 B2CAMX Power LLC
- Crosslinking of aromatic polymers for anion exchange membranes21 Oct 2025US 12,448,508 B2Rensselaer Polytechnic Institute
- Method for producing fluorosulfonyl group-containing fluorinated polymer, method for producing salt-type sulfonic acid group- containing fluorinated polymer and method for producing acid-type sulfonic acid group-containing fluorinated polymer26 Aug 2025US 12,398,228 B2AGC Inc.
- Composite ion-conducting membrane1 Oct 2026US 2026/0302300 A1Johnson Matthey Hydrogen Technologies Limited
- Aqueous dispersion of fluoroolefins, aqueous dispersion of copolymer of fluoroolefins, and method for manufacturing the same21 May 2026US 2026/0139150 A1Asahi Kasei Kabushiki Kaisha
- Aqueous dispersion of fluoroolefins, aqueous dispersion of copolymer of fluoroolefins, and method for manufacturing the same21 May 2026US 2026/0139151 A1Asahi Kasei Kabushiki Kaisha
- Reinforced ion-conducting membrane7 May 2026US 2026/0128341 A1Johnson Matthey Hydrogen Technologies Limited
- Crosslinking of aromatic polymers for anion exchange membranes5 Mar 2026US 2026/0062547 A1Rensselaer Polytechnic Institute
Most cited
By later US patents
- Process for making liquid composition of perfluorinated ion exchange polymer, and product thereof178US 4,433,082 AE. I. Du Pont de Nemours and Company · 1984
- Method of making sheet or shaped cation exchange membrane133US 4,298,697 ADiamond Shamrock Corporation · 1981
- Copolymers of tetrafluoroethylene and perfluorinated sulfonyl monomers and membranes made therefrom99US 5,463,005 AGas Research Institute · 1995
- Ion-exchange structures of copolymer blends useful in electrolytic cells88US 4,176,215 AE. I. Du Pont de Nemours and Company · 1979
- Permeable polymer membrane for dessication of gas85US 4,844,719 AAsahi Kasei Kogyo Kabushiki Kaisha · 1989