C08G 18/1816
Having carbocyclic groups
Official title: {having carbocyclic groups}
C08G18/1816 (Having carbocyclic groups) appears on 166 US grants and 258 published applications in this corpus.
Search patents in C08G- Granted patents
- 166
- Published applications
- 258
- Assignees
- 118
- Inventors
- 661
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 2 | 0 |
| 1992 | 3 | 0 |
| 1993 | 4 | 0 |
| 1994 | 5 | 0 |
| 1995 | 3 | 0 |
| 1996 | 4 | 0 |
| 1997 | 2 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 2 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 2 |
| 2005 | 0 | 1 |
| 2006 | 1 | 4 |
| 2007 | 0 | 5 |
| 2008 | 1 | 1 |
| 2009 | 0 | 4 |
| 2010 | 0 | 4 |
| 2011 | 2 | 8 |
| 2012 | 1 | 9 |
| 2013 | 3 | 5 |
| 2014 | 3 | 7 |
| 2015 | 7 | 9 |
| 2016 | 6 | 13 |
| 2017 | 11 | 15 |
| 2018 | 9 | 16 |
| 2019 | 6 | 35 |
| 2020 | 8 | 17 |
| 2021 | 14 | 28 |
| 2022 | 14 | 25 |
| 2023 | 17 | 16 |
| 2024 | 14 | 13 |
| 2025 | 12 | 8 |
| 2026 | 3 | 13 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Polyol premixes, thermally insulating rigid polyurethane foams and methods for their production22 Sep 2026US 12,742,034 B2Covestro LLC
- Coatings from polyisocyanurate coatings (rim) and their use in injection molding processes7 Apr 2026US 12,594,700 B2Covestro Deutschland AG
- Hydrofluoro olefin propellant in a polyurethane foam composition7 Apr 2026US 12,595,347 B2Icp Construction, Inc.
- Process for recycling a polyurethane material23 Dec 2025US 12,503,567 B2Huntsman International LLC
- Silicone-free foam stabilizers for producing polyurethane foams14 Oct 2025US 12,441,831 B2BASF SE
- Resin composition, resin solution, and method for producing crosslinked coating film8 Oct 2026US 2026/0308304 A1Mitsubishi Gas Chemical Company, Inc.
- Closed-cell water-blown rigid polyurethane foams and methods for their production20 Aug 2026US 2026/0242530 A1Covestro LLC
- Siloxane-functional compounds, their production, and their use in polyurethane foams13 Aug 2026US 2026/0234327 A1Evonik Operations GmbH
- Acid-blocked pyrrolidine catalysts for polyurethane foam30 Jul 2026US 2026/0217893 A1Huntsman Petrochemical Corporation
- Polyurethane foam-forming reaction mixtures, polyurethane foams formed therefrom, and methods for their production and use16 Jul 2026US 2026/0201107 A1Covestro LLC
Most cited
By later US patents
- Synthesis of polysaccharide covered superparamagnetic oxide colloids143US 5,262,176 AAdvanced Magnetics, Inc. · 1993
- Biologically degradable superparamagnetic particles for use as nuclear magnetic resonance imaging agents136US 4,770,183 AAdvanced Magnetics, Inc. · 1988
- Biologically degradable superparamagnetic materials for use in clinical applications95US 4,827,945 AAdvanced Magnetics, Inc. · 1989
- Vascular magnetic imaging method and agent comprising biodegradeable superparamagnetic metal oxides64US 5,055,288 AAdvanced Magnetics, Inc. · 1991
- Vascular magnetic resonance imaging agent comprising nanoparticles54US 5,314,679 AAdvanced Magnetics, Inc. · 1994