C08G 18/3848
Containing two nitrogen atoms in the ring
Official title: {containing two nitrogen atoms in the ring}
C08G18/3848 (Containing two nitrogen atoms in the ring) appears on 79 US grants and 59 published applications in this corpus.
Search patents in C08G- Granted patents
- 79
- Published applications
- 59
- Assignees
- 51
- Inventors
- 198
- Latest grant
- 10 Mar 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 6 | 0 |
| 1977 | 4 | 0 |
| 1978 | 3 | 0 |
| 1979 | 2 | 0 |
| 1980 | 4 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 3 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 2 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 2 | 0 |
| 1995 | 4 | 0 |
| 1996 | 2 | 0 |
| 1997 | 3 | 0 |
| 1998 | 2 | 0 |
| 1999 | 4 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 1 | 2 |
| 2003 | 2 | 2 |
| 2004 | 0 | 2 |
| 2005 | 2 | 3 |
| 2006 | 2 | 1 |
| 2007 | 0 | 0 |
| 2008 | 1 | 0 |
| 2009 | 0 | 3 |
| 2010 | 0 | 3 |
| 2011 | 0 | 2 |
| 2012 | 3 | 1 |
| 2013 | 0 | 4 |
| 2014 | 3 | 1 |
| 2015 | 2 | 2 |
| 2016 | 2 | 2 |
| 2017 | 1 | 3 |
| 2018 | 1 | 2 |
| 2019 | 2 | 3 |
| 2020 | 1 | 4 |
| 2021 | 2 | 1 |
| 2022 | 2 | 4 |
| 2023 | 0 | 5 |
| 2024 | 3 | 3 |
| 2025 | 3 | 2 |
| 2026 | 1 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Supramolecular biomedical polymers10 Mar 2026US 12,570,804 B2SupraPolix B.V.
- Self-healing oligomers and the use thereof18 Nov 2025US 12,473,395 B2Covestro (Netherlands) B.V.
- Microcapsule compositions stabilized with viscosity control agents23 Sep 2025US 12,419,815 B2International Flavors & Fragrances Inc.
- Silylated organomodified compounds18 Feb 2025US 12,227,531 B2Momentive Performance Materials Inc.
- Self-healing polyurethane (PU) material, double-layer self-healing PU film, and preparation method and use thereof23 Apr 2024US 11,965,076 B2Lanzhou Institute of Chemical Physics, CAS
- Aerosol composition25 Jun 2026US 2026/0174692 A1UPyTher B.V.
- Hydrogel composition for the treatment of peritoneal diseases5 Feb 2026US 2026/0034222 A1UPyTher B.V.
- Polymer and use thereof5 Feb 2026US 2026/0035504 A1Shenzhen Senior Technology Material Co., Ltd.
- Polymer and use thereof22 Jan 2026US 2026/0022207 A1Shenzhen Senior Technology Material Co., Ltd.
- Ph-switchable hydrogel27 Nov 2025US 2025/0361360 A1
Most cited
By later US patents
- Process for the preparation of compounds which contain hydantoin rings58US 3,939,122 ABayer Aktiengesellschaft · 1976
- Open celled cellular polyurethane products31US 6,001,890 AImperial Chemical Industries PLC · 1999
- Process for rigid polyurethane foams25US 6,433,032 B1Imperial Chemical Industries PLC · 2002
- Aspartate-functional polyhydantoin prepolymers and their use in coating compositions21US 5,597,930 ABayer Aktiengesellschaft · 1997
- Polyurea polymers formed from polyethers having terminal amino groups19US 4,260,729 ALim-Holding S.A. · 1981