C08J 5/2218
Synthetic macromolecular compounds
Official title: {Synthetic macromolecular compounds}
C08J5/2218 (Synthetic macromolecular compounds) appears on 1,347 US grants and 1,560 published applications in this corpus.
Search patents in C08J- Granted patents
- 1,347
- Published applications
- 1,560
- Assignees
- 613
- Inventors
- 3,068
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 13 | 0 |
| 1978 | 18 | 0 |
| 1979 | 15 | 0 |
| 1980 | 15 | 0 |
| 1981 | 14 | 0 |
| 1982 | 15 | 0 |
| 1983 | 17 | 0 |
| 1984 | 13 | 0 |
| 1985 | 13 | 0 |
| 1986 | 13 | 0 |
| 1987 | 16 | 0 |
| 1988 | 6 | 0 |
| 1989 | 5 | 0 |
| 1990 | 7 | 0 |
| 1991 | 5 | 0 |
| 1992 | 7 | 0 |
| 1993 | 2 | 0 |
| 1994 | 3 | 0 |
| 1995 | 7 | 0 |
| 1996 | 7 | 0 |
| 1997 | 13 | 0 |
| 1998 | 15 | 0 |
| 1999 | 8 | 0 |
| 2000 | 13 | 0 |
| 2001 | 9 | 6 |
| 2002 | 13 | 22 |
| 2003 | 14 | 33 |
| 2004 | 28 | 55 |
| 2005 | 21 | 84 |
| 2006 | 22 | 103 |
| 2007 | 33 | 89 |
| 2008 | 30 | 72 |
| 2009 | 49 | 96 |
| 2010 | 77 | 80 |
| 2011 | 71 | 75 |
| 2012 | 54 | 68 |
| 2013 | 58 | 44 |
| 2014 | 57 | 49 |
| 2015 | 48 | 63 |
| 2016 | 48 | 50 |
| 2017 | 59 | 87 |
| 2018 | 41 | 62 |
| 2019 | 65 | 47 |
| 2020 | 56 | 60 |
| 2021 | 45 | 54 |
| 2022 | 39 | 55 |
| 2023 | 36 | 45 |
| 2024 | 40 | 73 |
| 2025 | 41 | 46 |
| 2026 | 30 | 42 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- C08J 5/2231Based on macromolecular compounds obtained by reactions involving unsaturated carbon-to-carbon bonds751
- C08J 5/2256Based on macromolecular compounds obtained by reactions other than those involving carbon-to-carbon533
- C08J 5/2268Based on macromolecular compounds obtained by reactions involving unsaturated carbon-to-carbon bonds, and43
- C08J 5/2225Containing fluorine29
Recent patents
- Cross-linkable polymer compositions and applications thereof8 Sep 2026US 12,729,261 B2Notark Corporation
- Cation exchange membrane and method for producing same1 Sep 2026US 12,722,125 B2Astom Corporation
- Method for producing fluorinated polymer and method for producing fluorinated ion exchange polymer1 Sep 2026US 12,723,119 B2AGC Inc.
- Block copolymer, production method therefor, polymeric electrolyte material, polymeric electrolyte molded article, polymeric electrolyte film, electrolyte film equipped with catalyst layer, membrane electrode composite, solid polymer fuel cell, and water electrolysis type hydrogen generating device25 Aug 2026US 12,715,962 B2Toray Industries, Inc.
- Anion exchange polymers and membranes for electrolysis25 Aug 2026US 12,715,968 B2Uop LLC
- Elastic sulfonated styrene diene block copolymers8 Oct 2026US 2026/0308343 A1Rensselaer Polytechnic Institute
- Crosslinked copolymer, polymer membrane comprising the same, and anion exchange membrane comprising the polymer membrane1 Oct 2026US 2026/0302299 A1Hanwha Solutions Corporation
- Composite ion-conducting membrane1 Oct 2026US 2026/0302300 A1Johnson Matthey Hydrogen Technologies Limited
- Process for the fabrication of supported membranes by thermal and uv initiated mass polymerization24 Sep 2026US 2026/0286075 A1Promerus, LLC
- Polyamide-based mixed matrix membrane for oil-water separation24 Sep 2026US 2026/0286076 A1King Fahd University of Petroleum and Minerals
Most cited
By later US patents
- Composite solid polymer electrolyte membranes346US 7,550,216 B2Foster-Miller, Inc. · 2009
- Ultra-thin integral composite membrane242US 5,547,551 AW. L. Gore & Associates, Inc. · 1996
- Proton conducting polymers used as membranes200US 5,525,436 ACase Western Reserve University · 1996
- 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
- Integral composite membrane150US 5,599,614 AW. L. Gore & Associates, Inc. · 1997