C08J 5/22
Films, membranes or diaphragms
C08J5/22 (Films, membranes or diaphragms) appears on 1,932 US grants and 2,163 published applications in this corpus.
Search patents in C08J- Granted patents
- 1,932
- Published applications
- 2,163
- Assignees
- 814
- Inventors
- 4,273
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 10 | 0 |
| 1977 | 18 | 0 |
| 1978 | 33 | 0 |
| 1979 | 23 | 0 |
| 1980 | 25 | 0 |
| 1981 | 26 | 0 |
| 1982 | 26 | 0 |
| 1983 | 28 | 0 |
| 1984 | 25 | 0 |
| 1985 | 23 | 0 |
| 1986 | 20 | 0 |
| 1987 | 25 | 0 |
| 1988 | 9 | 0 |
| 1989 | 10 | 0 |
| 1990 | 14 | 0 |
| 1991 | 15 | 0 |
| 1992 | 14 | 0 |
| 1993 | 9 | 0 |
| 1994 | 13 | 0 |
| 1995 | 11 | 0 |
| 1996 | 9 | 0 |
| 1997 | 14 | 0 |
| 1998 | 21 | 0 |
| 1999 | 14 | 0 |
| 2000 | 19 | 0 |
| 2001 | 16 | 9 |
| 2002 | 23 | 38 |
| 2003 | 25 | 55 |
| 2004 | 37 | 88 |
| 2005 | 36 | 120 |
| 2006 | 35 | 136 |
| 2007 | 45 | 125 |
| 2008 | 41 | 96 |
| 2009 | 70 | 128 |
| 2010 | 97 | 106 |
| 2011 | 92 | 103 |
| 2012 | 81 | 93 |
| 2013 | 77 | 74 |
| 2014 | 74 | 67 |
| 2015 | 71 | 79 |
| 2016 | 65 | 68 |
| 2017 | 77 | 108 |
| 2018 | 57 | 79 |
| 2019 | 80 | 74 |
| 2020 | 75 | 74 |
| 2021 | 63 | 67 |
| 2022 | 51 | 73 |
| 2023 | 48 | 67 |
| 2024 | 52 | 96 |
| 2025 | 52 | 74 |
| 2026 | 38 | 66 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Separator and preparation method thereof, secondary battery and device29 Sep 2026US 12,749,765 B2Contemporary Amperex Technology (Hong Kong) Limited
- Polymer and preparation thereof, and electrolyte film and preparation thereof22 Sep 2026US 12,744,245 B2Contemporary Amperex Technology (Hong Kong) Limited
- 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.
- Polymerizable composition, ion exchange resin, ion exchange membrane, membrane electrode assembly, and hydrogen production device8 Oct 2026US 2026/0308295 A1Tokuyama Corporation
- 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
- Copolyamide resin, and composition, molded article, film and monofilament containing same24 Sep 2026US 2026/0286050 A1Ube Corporation
Most cited
By later US patents
- Polyurethane/polyurea compositions containing silicone for biosensor membranes783US 5,882,494 AMiniMed Inc. · 1999
- Silicon-containing biocompatible membranes477US 5,777,060 AMiniMed Inc. · 1998
- Hydrophilic, swellable coatings for biosensors456US 6,784,274 B2MiniMed Inc. · 2004
- Hydrophilic, swellable coatings for biosensors440US 5,786,439 AMiniMed Inc. · 1998
- Hydrophilic, swellable coatings for biosensors356US 6,462,162 B2MiniMed Inc. · 2002