C08G 18/506
Containing two nitrogen atoms in the ring
Official title: {containing two nitrogen atoms in the ring}
C08G18/506 (Containing two nitrogen atoms in the ring) appears on 19 US grants and 6 published applications in this corpus.
Search patents in C08G- Granted patents
- 19
- Published applications
- 6
- Assignees
- 11
- Inventors
- 41
- Latest grant
- 24 Jun 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 2 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 2 | 0 |
| 1986 | 0 | 0 |
| 1987 | 2 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 3 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 1 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 2 |
| 2010 | 0 | 0 |
| 2011 | 1 | 0 |
| 2012 | 1 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 1 |
| 2018 | 0 | 0 |
| 2019 | 1 | 1 |
| 2020 | 0 | 0 |
| 2021 | 0 | 0 |
| 2022 | 0 | 0 |
| 2023 | 0 | 0 |
| 2024 | 0 | 0 |
| 2025 | 1 | 0 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Polyurethane material with a high temperature resistance24 Jun 2025US 12,338,313 B2BASF SE
- Durable hydrogen bonded hydrogels23 Jul 2019US 10,358,521 B2SupraPolix B.V.
- Method for producing rigid polyurethane foam, and rigid polyurethane foam4 Sep 2012US 8,258,196 B2Asahi Glass Company, Limited
- Method for producing polymer-dispersed polyol27 Dec 2011US 8,084,562 B2Asahi Glass Company, Limited
- Polyether polyol production of a flexible urethane foam and shaped article therefrom22 Nov 1994US 5,367,050 ATakeda Chemical Industries, Ltd.
- Polymer and use thereof5 Feb 2026US 2026/0035504 A1Shenzhen Senior Technology Material Co., Ltd.
- Polyurethane material with a high temperature resistance25 Jul 2019US 2019/0225735 A1BASF SE
- Durable hydrogen bonded hydrogels27 Jul 2017US 2017/0210843 A1SupraPolix B.V.
- Method for producing rigid polyurethane foam, and rigid polyurethane foam17 Sep 2009US 2009/0234036 A1Asahi Glass Company, Limited
- Method for producing polymer-dispersed polyol10 Sep 2009US 2009/0227696 A1Asahi Glass Company, Limited
Most cited
By later US patents
- Chain-extendable crosslinkable urethane modified polyhydroxy oligomers and coating composition comprising same31US 4,554,188 AFord Motor Company · 1985
- Method of producing polyurethane-based cores and moulds according to the so-called cold-box procedure23US 3,933,727 AAB Bofors · 1976
- Process for preparing rigid polyurethane foams22US 4,704,411 AThe Dow Chemical Company · 1987
- Polyurea polymers formed from polyethers having terminal amino groups19US 4,260,729 ALim-Holding S.A. · 1981
- Molded rigid polyurethane foams prepared from aminoalkylpiperazine-initiated polyols19US 4,704,410 AThe Dow Chemical Company · 1987