C08G 18/2027
Having two nitrogen atoms in the ring
Official title: {having two nitrogen atoms in the ring}
C08G18/2027 (Having two nitrogen atoms in the ring) appears on 173 US grants and 248 published applications in this corpus.
Search patents in C08G- Granted patents
- 173
- Published applications
- 248
- Assignees
- 129
- Inventors
- 739
- Latest grant
- 16 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 3 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 2 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 2 | 0 |
| 1984 | 2 | 0 |
| 1985 | 2 | 0 |
| 1986 | 3 | 0 |
| 1987 | 2 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 4 | 0 |
| 1993 | 3 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 3 | 0 |
| 1997 | 2 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 1 |
| 2003 | 2 | 5 |
| 2004 | 3 | 3 |
| 2005 | 3 | 4 |
| 2006 | 3 | 2 |
| 2007 | 0 | 3 |
| 2008 | 0 | 1 |
| 2009 | 2 | 0 |
| 2010 | 0 | 7 |
| 2011 | 1 | 8 |
| 2012 | 1 | 4 |
| 2013 | 4 | 1 |
| 2014 | 6 | 6 |
| 2015 | 6 | 8 |
| 2016 | 4 | 7 |
| 2017 | 5 | 6 |
| 2018 | 7 | 15 |
| 2019 | 6 | 27 |
| 2020 | 18 | 17 |
| 2021 | 16 | 31 |
| 2022 | 13 | 28 |
| 2023 | 7 | 21 |
| 2024 | 14 | 19 |
| 2025 | 10 | 14 |
| 2026 | 5 | 10 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Silicate-modified high-toughness and low-heat polymer grouting material for reinforcement16 Jun 2026US 12,655,273 B2SAFEKEY Engineering Technology (Zhengzhou), Ltd.
- Compositions containing uretdione groups crosslinking at low temperatures24 Feb 2026US 12,559,586 B2Covestro Deutschland AG
- Viscoelastic elastomeric polyurethane foams, process for preparing them and use thereof17 Feb 2026US 12,552,894 B2BASF SE
- HCFO-containing isocyanate-reactive compositions, related foam-forming compositions and polyurethane foams3 Feb 2026US 12,540,214 B2Covestro LLC
- Toner supply roller, developing apparatus, electrophotographic image forming apparatus and process cartridge3 Feb 2026US 12,541,171 B2Canon Kabushiki Kaisha
- Polyurethane composition for rotational molding and use thereof30 Jul 2026US 2026/0217895 A1BASF SE
- Biobased polyester polyol and polyurethane foam system containing the same16 Jul 2026US 2026/0201102 A1BASF SE
- Composite elements of thermal insulation material, adhesive and outer layer16 Jul 2026US 2026/0201223 A1BASF SE
- Polyol catalyst for a two-component polyurethane system11 Jun 2026US 2026/0159629 A1Arkema France
- Two-component epoxy adhesive for liquified natural gas containers7 May 2026US 2026/0125584 A1Sika Technology AG
Most cited
By later US patents
- Crosslinked polymer electrolyte compositions28US 6,673,273 B23M Innovative Properties Company · 2004
- Catalyst for polyurethane having delay property25US 4,617,286 AToyo Soda Manufacturing Co., Ltd. · 1986
- Catalyst and method for trimerization of isocyanates16US 6,635,761 B1Rhodia Chimie · 2003
- Process for making polyurea foams utilizing imidazole catalysts14US 4,234,693 AImperial Chemical Industries PLC · 1980
- Low odor amine catalysts for polyurethane flexible slabstock foams based on polyester polyols14US 5,591,780 AAir Products and Chemicals, Inc. · 1997