C08G 18/1808
Having alkylene polyamine groups
Official title: {having alkylene polyamine groups}
C08G18/1808 (Having alkylene polyamine groups) appears on 233 US grants and 330 published applications in this corpus.
Search patents in C08G- Granted patents
- 233
- Published applications
- 330
- Assignees
- 131
- Inventors
- 745
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 2 | 0 |
| 1978 | 2 | 0 |
| 1979 | 2 | 0 |
| 1980 | 1 | 0 |
| 1981 | 3 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 2 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 2 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 4 | 0 |
| 1992 | 3 | 0 |
| 1993 | 5 | 0 |
| 1994 | 6 | 0 |
| 1995 | 4 | 0 |
| 1996 | 5 | 0 |
| 1997 | 4 | 0 |
| 1998 | 3 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 2 |
| 2004 | 1 | 3 |
| 2005 | 0 | 1 |
| 2006 | 1 | 2 |
| 2007 | 1 | 7 |
| 2008 | 0 | 3 |
| 2009 | 1 | 4 |
| 2010 | 1 | 5 |
| 2011 | 0 | 8 |
| 2012 | 0 | 7 |
| 2013 | 7 | 9 |
| 2014 | 7 | 12 |
| 2015 | 6 | 15 |
| 2016 | 10 | 25 |
| 2017 | 17 | 26 |
| 2018 | 16 | 27 |
| 2019 | 13 | 33 |
| 2020 | 20 | 12 |
| 2021 | 20 | 33 |
| 2022 | 11 | 26 |
| 2023 | 16 | 21 |
| 2024 | 20 | 17 |
| 2025 | 8 | 16 |
| 2026 | 6 | 16 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Sulfur containing polyisocyanate polyaddition (PIPA) polyol with improved flame retardant properties and foams containing them8 Sep 2026US 12,729,264 B2Dow Global Technologies LLC
- Elastic and stretchable gel polymer electrolyte and methods of making the same12 May 2026US 12,626,900 B2Hercules Incorporated
- Composition, silicone polyether surfactant formed therefrom, and related methods and articles10 Mar 2026US 12,570,803 B2Dow Global Technologies LLC
- Composition and process for producing silylated polymers and use thereof3 Feb 2026US 12,540,211 B2PolyU GmbH
- Toner supply roller, developing apparatus, electrophotographic image forming apparatus and process cartridge3 Feb 2026US 12,541,171 B2Canon Kabushiki Kaisha
- Method for preparing flexible slabstock polyurethane foam8 Oct 2026US 2026/0308300 A1Evonik Operations GmbH
- Production of flame-retardent polyurethane foam10 Sep 2026US 2026/0265440 A1Evonik Operations GmbH
- Closed-cell water-blown rigid polyurethane foams and methods for their production20 Aug 2026US 2026/0242530 A1Covestro LLC
- Polyurethane foam-forming reaction mixtures, polyurethane foams formed therefrom, and methods for their production and use16 Jul 2026US 2026/0201107 A1Covestro LLC
- Composition containing isocyanate and isocyanurate groups, and rigid pur/pir foams produced therefrom16 Jul 2026US 2026/0201108 A1Covestro Deutschland AG
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