C08G 18/7887
Having two nitrogen atoms in the ring
Official title: {having two nitrogen atoms in the ring}
C08G18/7887 (Having two nitrogen atoms in the ring) appears on 81 US grants and 72 published applications in this corpus.
Search patents in C08G- Granted patents
- 81
- Published applications
- 72
- Assignees
- 40
- Inventors
- 213
- Latest grant
- 19 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 2 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 7 | 0 |
| 1985 | 1 | 0 |
| 1986 | 2 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 2 | 0 |
| 1995 | 0 | 0 |
| 1996 | 3 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 2 | 0 |
| 2001 | 3 | 0 |
| 2002 | 0 | 1 |
| 2003 | 1 | 1 |
| 2004 | 1 | 1 |
| 2005 | 0 | 1 |
| 2006 | 0 | 2 |
| 2007 | 0 | 2 |
| 2008 | 1 | 3 |
| 2009 | 1 | 2 |
| 2010 | 1 | 5 |
| 2011 | 2 | 2 |
| 2012 | 1 | 4 |
| 2013 | 1 | 1 |
| 2014 | 3 | 2 |
| 2015 | 2 | 6 |
| 2016 | 4 | 8 |
| 2017 | 3 | 3 |
| 2018 | 5 | 2 |
| 2019 | 1 | 5 |
| 2020 | 2 | 5 |
| 2021 | 3 | 4 |
| 2022 | 4 | 4 |
| 2023 | 3 | 1 |
| 2024 | 1 | 6 |
| 2025 | 3 | 0 |
| 2026 | 3 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Distillation of polyisocyanates19 May 2026US 12,630,662 B2Covestro Deutschland AG
- Modified polyisocyanate19 May 2026US 12,630,667 B2Covestro Deutschland AG
- Water-dispersible modified polyisocyanates3 Mar 2026US 12,565,559 B2Covestro Deutschland AG
- Polyisocyanate composition, film-forming composition, film, film laminate, adhesive resin composition and adhesive resin-cured product, coating composition and coating material-cured product24 Jun 2025US 12,338,314 B2Asahi Kasei Kabushiki Kaisha
- UV curable coating compositions containing aliphatic urethane acrylate resins29 Apr 2025US 12,286,555 B2Red Spot Paint & Varnish Co., Inc.
- Resin composition for preparing a thermoplastic polymer matrix11 Jun 2026US 2026/0159631 A1Covestro Deutschland AG
- Polyisocyanate composition, film-forming composition, film, film laminate, adhesive resin composition and adhesive resin-cured product, coating composition and coating material-cured product19 Sep 2024US 2024/0309146 A1Asahi Kasei Kabushiki Kaisha
- A modified polyisocyanate12 Sep 2024US 2024/0301122 A1Covestro Deutschland AG
- Polyisocyanurate-prepregs and fiber composite components produced therefrom12 Sep 2024US 2024/0301154 A1Covestro Deutschland AG
- UV Curable Coating Compositions Containing Aliphatic Urethane Acrylate Resins11 Jul 2024US 2024/0228827 A9Red Spot Paint & Varnish Co., Inc.
Most cited
By later US patents
- Holographic media and photopolymers92US 8,329,773 B2Bayer MaterialScience AG · 2012
- Process for the preparation of compounds which contain hydantoin rings58US 3,939,122 ABayer Aktiengesellschaft · 1976
- Polyisocyanates containing isocyanurate groups and a process for their production39US 5,013,838 ABayer Aktiengesellschaft · 1991
- Process for preparing polyisocyanates containing iminooxadiazinedione groups39US 6,090,939 ABayer Aktiengesellschaft · 2000
- Process for preparing polyisocyanates containing iminooxadiazinedione groups29US 6,107,484 ABayer Aktiengesellschaft · 2000