C08G 18/4208
Containing aromatic groups
Official title: {containing aromatic groups}
C08G18/4208 (Containing aromatic groups) appears on 845 US grants and 1,071 published applications in this corpus.
Search patents in C08G- Granted patents
- 845
- Published applications
- 1,071
- Assignees
- 409
- Inventors
- 2,671
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 6 | 0 |
| 1977 | 5 | 0 |
| 1978 | 5 | 0 |
| 1979 | 6 | 0 |
| 1980 | 13 | 0 |
| 1981 | 8 | 0 |
| 1982 | 6 | 0 |
| 1983 | 8 | 0 |
| 1984 | 19 | 0 |
| 1985 | 14 | 0 |
| 1986 | 12 | 0 |
| 1987 | 17 | 0 |
| 1988 | 8 | 0 |
| 1989 | 12 | 0 |
| 1990 | 8 | 0 |
| 1991 | 10 | 0 |
| 1992 | 8 | 0 |
| 1993 | 5 | 0 |
| 1994 | 6 | 0 |
| 1995 | 6 | 0 |
| 1996 | 7 | 0 |
| 1997 | 11 | 0 |
| 1998 | 14 | 0 |
| 1999 | 9 | 0 |
| 2000 | 15 | 0 |
| 2001 | 15 | 1 |
| 2002 | 14 | 19 |
| 2003 | 16 | 20 |
| 2004 | 8 | 21 |
| 2005 | 6 | 14 |
| 2006 | 10 | 19 |
| 2007 | 3 | 27 |
| 2008 | 2 | 13 |
| 2009 | 10 | 13 |
| 2010 | 8 | 31 |
| 2011 | 10 | 37 |
| 2012 | 13 | 42 |
| 2013 | 21 | 38 |
| 2014 | 16 | 24 |
| 2015 | 35 | 47 |
| 2016 | 30 | 44 |
| 2017 | 34 | 48 |
| 2018 | 29 | 49 |
| 2019 | 29 | 74 |
| 2020 | 32 | 67 |
| 2021 | 51 | 88 |
| 2022 | 40 | 105 |
| 2023 | 50 | 65 |
| 2024 | 59 | 69 |
| 2025 | 42 | 54 |
| 2026 | 24 | 42 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- C08G 18/4211Derived from aromatic dicarboxylic acids and dialcohols629
- C08G 18/4225Derived from residues obtained from the manufacture of dimethylterephthalate and from polyhydroxy55
- C08G 18/4222Derived from aromatic polyhydroxy compounds and polycarboxylic acids36
- C08G 18/4227Derived from aromatic polycarboxylic acids containing at least two aromatic rings and15
Recent patents
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- Production of flame-retardent polyurethane foam10 Sep 2026US 2026/0265440 A1Evonik Operations GmbH
- Polyurethane-polyurea aqueous dispersion, and preparation method therefor and use thereof27 Aug 2026US 2026/0250455 A1Wanhua Chemical Group Co., Ltd.
- Optical film, optical effect film, easily adhesive film, optical multilayer body, surface plate, image display device, and polarizing plate27 Aug 2026US 2026/0251821 A1Dai Nippon Printing Co.Ltd.
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Most cited
By later US patents
- Membranes of polyurethane based materials including polyester polyols423US 6,013,340 ANIKE, Inc. · 2000
- Membranes of polyurethane based materials including polyester polyols364US 6,321,465 B1NIKE, Inc. · 2001
- Barrier members including a barrier layer employing polyester polyols295US 6,203,868 B1NIKE, Inc. · 2001
- Foams having shape memory66US 6,583,194 B22003
- Attrition-resistant, controlled release fertilizers65US 4,804,403 AMelamine Chemicals, Inc. · 1989