C08G 18/3834
Containing hydrazide or semi-carbazide groups
Official title: {containing hydrazide or semi-carbazide groups}
C08G18/3834 (Containing hydrazide or semi-carbazide groups) appears on 26 US grants and 22 published applications in this corpus.
Search patents in C08G- Granted patents
- 26
- Published applications
- 22
- Assignees
- 29
- Inventors
- 92
- Latest grant
- 7 Apr 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 2 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 0 |
| 2003 | 0 | 5 |
| 2004 | 1 | 1 |
| 2005 | 1 | 0 |
| 2006 | 1 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 1 |
| 2009 | 0 | 1 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 1 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 1 | 0 |
| 2016 | 0 | 2 |
| 2017 | 1 | 1 |
| 2018 | 0 | 0 |
| 2019 | 1 | 1 |
| 2020 | 0 | 1 |
| 2021 | 1 | 2 |
| 2022 | 1 | 3 |
| 2023 | 1 | 2 |
| 2024 | 2 | 0 |
| 2025 | 0 | 0 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Preparation of polyurethane systems7 Apr 2026US 12,595,332 B2Evonik Operations GmbH
- One component self-crosslinking coatings9 Apr 2024US 11,952,505 B1Swimc LLC
- Low viscosity poly(alkynyl carbamate) prepolymers30 Jan 2024US 11,884,770 B2The University of Southern Mississippi
- One component self-crosslinking coatings7 Feb 2023US 11,572,489 B1Swimc LLC
- Polyurethane urea-containing adipic acid dihydrazide coating where active hydrogens react with the glycidol epoxy group to form a diol23 Aug 2022US 11,421,129 B2Lake Region Manufacturing, Inc.
- Bionic environment-adaptive self-repairing coating as well as preparation method and use thereof29 Jan 2026US 2026/0028506 A1Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences
- Heat-curable polyurethane compositions19 Oct 2023US 2023/0331898 A1Sika Technology AG
- Preparation of a Coating, Adhesive, Film or Sheet26 Jan 2023US 2023/0028778 A1Stahl International B.V.
- Preparation of polyurethane systems29 Dec 2022US 2022/0411566 A1Evonik Operations GmbH
- Method for lowering emissions of a polyurethane foam23 Jun 2022US 2022/0195107 A1Covestro Deutschland AG
Most cited
By later US patents
- Polyurethane coating compositions57US 4,983,662 AICI Resins BV · 1991
- Linear polyurethane elastomers, and a process for the preparation thereof32US 4,791,187 ABayer Akteingesellschaft · 1988
- Permanently stabilized polyurethanes28US 4,145,512 ABayer Aktiengesellschaft · 1979
- Polyurethane resins, process for producing the same, and uses thereof26US 5,656,701 ASakata Inx Corporation · 1997
- Process for preparing a coating with improved resistance to yellowing and the resulting coating25US 5,510,443 ABayer Aktiengesellschaft · 1996