C08G 18/092
Oligomerisation to isocyanurate groups
Official title: {oligomerisation to isocyanurate groups}
C08G18/092 (Oligomerisation to isocyanurate groups) appears on 281 US grants and 337 published applications in this corpus.
Search patents in C08G- Granted patents
- 281
- Published applications
- 337
- Assignees
- 153
- Inventors
- 893
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 7 | 0 |
| 1977 | 2 | 0 |
| 1978 | 3 | 0 |
| 1979 | 2 | 0 |
| 1980 | 4 | 0 |
| 1981 | 5 | 0 |
| 1982 | 5 | 0 |
| 1983 | 6 | 0 |
| 1984 | 4 | 0 |
| 1985 | 3 | 0 |
| 1986 | 3 | 0 |
| 1987 | 6 | 0 |
| 1988 | 3 | 0 |
| 1989 | 6 | 0 |
| 1990 | 2 | 0 |
| 1991 | 4 | 0 |
| 1992 | 9 | 0 |
| 1993 | 3 | 0 |
| 1994 | 7 | 0 |
| 1995 | 4 | 0 |
| 1996 | 3 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 2 | 0 |
| 2000 | 6 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 4 |
| 2003 | 4 | 5 |
| 2004 | 1 | 6 |
| 2005 | 1 | 4 |
| 2006 | 1 | 6 |
| 2007 | 1 | 8 |
| 2008 | 1 | 6 |
| 2009 | 4 | 5 |
| 2010 | 1 | 9 |
| 2011 | 3 | 14 |
| 2012 | 3 | 9 |
| 2013 | 9 | 12 |
| 2014 | 6 | 15 |
| 2015 | 7 | 18 |
| 2016 | 7 | 18 |
| 2017 | 17 | 28 |
| 2018 | 19 | 25 |
| 2019 | 10 | 19 |
| 2020 | 26 | 23 |
| 2021 | 10 | 17 |
| 2022 | 14 | 28 |
| 2023 | 8 | 22 |
| 2024 | 10 | 14 |
| 2025 | 9 | 13 |
| 2026 | 7 | 9 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Water-dispersible polyisocyanate, aqueous polyurethane resin composition, and article25 Aug 2026US 12,715,956 B2Mitsui Chemicals, Inc.
- Xylylene diisocynate composition, preparation method therefor and use thereof14 Jul 2026US 12,679,923 B2Wanhua Chemical Group Co., Ltd.
- Stabilizer, polymer polyol prepared using stabilizer and method for preparing polymer polyol7 Jul 2026US 12,674,014 B2Korea Kumho Petrochemical Co., Ltd.
- Rigid polyurethane foam and multilayer thermal insulation assemblies containing the foam9 Jun 2026US 12,649,815 B2Dow Global Technologies LLC
- Dimensionally stable polyurethanes and composites12 May 2026US 12,624,147 B2Dow Global Technologies LLC
- Method for Preparing Isocyanurate-Group-Containing Polyisocyanates3 Sep 2026US 2026/0258187 A1Covestro Deutschland AG
- Polyisocyanate composition13 Aug 2026US 2026/0234113 A1Wanhua Chemical Group Co., Ltd.
- Polyurethane foam-forming reaction mixtures, polyurethane foams formed therefrom, and methods for their production and use16 Jul 2026US 2026/0201107 A1Covestro LLC
- Depolymerization of polyisocyanurates with organic amine bases2 Jul 2026US 2026/0184883 A1Evonik Operations GmbH
- New method for recycling of polyisocyanurates2 Jul 2026US 2026/0184884 A1Evonik Operations GmbH
Most cited
By later US patents
- Rigid polyurethane modified polyisocyanurate containing fly ash as an inorganic filler69US 4,661,533 AThe Dow Chemical Company · 1987
- Epoxy-terminated polyoxazolidones and process for the preparation thereof67US 5,112,932 AThe Dow Chemical Company · 1992
- Organic aerogels61US 5,484,818 AImperial Chemical Industries PLC · 1996
- Polyisocyanurate foam, catalyst composition and process for producing such47US 3,940,517 AThe Celotex Corporation · 1976
- Catalyst mixtures for polyisocyanurate foam47US 4,710,521 AThe Celotex Corporation · 1987