C08G 18/346
Having four carboxylic acid groups
Official title: {having four carboxylic acid groups}
C08G18/346 (Having four carboxylic acid groups) appears on 57 US grants and 52 published applications in this corpus.
Search patents in C08G- Granted patents
- 57
- Published applications
- 52
- Assignees
- 46
- Inventors
- 159
- Latest grant
- 20 May 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 5 | 0 |
| 1978 | 2 | 0 |
| 1979 | 2 | 0 |
| 1980 | 0 | 0 |
| 1981 | 2 | 0 |
| 1982 | 1 | 0 |
| 1983 | 2 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 3 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 2 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 2 |
| 2005 | 1 | 1 |
| 2006 | 0 | 2 |
| 2007 | 1 | 0 |
| 2008 | 1 | 2 |
| 2009 | 1 | 2 |
| 2010 | 3 | 0 |
| 2011 | 0 | 4 |
| 2012 | 2 | 3 |
| 2013 | 2 | 3 |
| 2014 | 4 | 2 |
| 2015 | 1 | 1 |
| 2016 | 2 | 0 |
| 2017 | 2 | 3 |
| 2018 | 1 | 8 |
| 2019 | 2 | 0 |
| 2020 | 3 | 3 |
| 2021 | 2 | 3 |
| 2022 | 1 | 4 |
| 2023 | 2 | 2 |
| 2024 | 2 | 2 |
| 2025 | 2 | 4 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Coating compositions and methods, and articles coated with same20 May 2025US 12,305,059 B2Red Spot Paint & Varnish Co., Inc.
- Water-based compositions13 May 2025US 12,297,315 B2Arkema France
- Porous co-polymeric gel compositions, porous carbon compositions, and methods for synthesis thereof19 Nov 2024US 12,145,127 B2Aspen Aerogels, Inc.
- Coating compositions and methods, and articles coated with same14 May 2024US 11,981,826 B2Red Spot Paint & Varnish Co., Inc.
- Dispensable polyimide aerogel prepolymer, method of making the same, method of using the same, and substrate comprising patterned polyimide aerogel12 Sep 2023US 11,753,517 B2Raytheon Company
- Protective film, optical article including the same, and method for preparing the protective film27 Aug 2026US 2026/0250521 A1Electronics and Telecommunications Research Institute
- Polyaspartate-based two-component coating compositions for producing coatings having good self-healing properties coupled with low tackiness17 Jul 2025US 2025/0230337 A1Covestro Deutschland AG
- Urea coating composition24 Apr 2025US 2025/0129262 A1Kcc Corporation
- Modified polyurethane material and method for manufacturing the same30 Jan 2025US 2025/0034312 A1Kuroki Industrial Co., Ltd.
- Novel porous polymer compositions for the synthesis of monolithic bimodal microporous/macroporous carbon compositions useful for selective co2 sequestration23 Jan 2025US 2025/0025856 A1Aspen Aerogels, Inc.
Most cited
By later US patents
- Urethanes made from aliphatic fluoro alcohols, isocyanates and carboxylic acids, a process for their preparation and their use15US 5,171,877 AHoechst Aktiengesellschaft · 1992
- Producing polymer foams comprising imide groups15US 9,598,548 B2BASF SE · 2017
- Preparation of polyimide from organic diisocyanate with alkali metal salt of alcohol as catalyst12US 4,001,186 AThe Upjohn Company · 1977
- Polyetheramideimide resins and electrical conductors insulated therewith12US 4,354,965 AGeneral Electric Company · 1982
- Polyimide foams12US 7,541,388 B2The United States of America as represented by the Administrator of the National Aeronautics and Space Administration · 2009