C08G 65/2642
Characterised by the catalyst used
Official title: {characterised by the catalyst used}
C08G65/2642 (Characterised by the catalyst used) appears on 815 US grants and 728 published applications in this corpus.
Search patents in C08G- Granted patents
- 815
- Published applications
- 728
- Assignees
- 255
- Inventors
- 1,724
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 10 | 0 |
| 1977 | 5 | 0 |
| 1978 | 10 | 0 |
| 1979 | 5 | 0 |
| 1980 | 8 | 0 |
| 1981 | 11 | 0 |
| 1982 | 6 | 0 |
| 1983 | 5 | 0 |
| 1984 | 11 | 0 |
| 1985 | 0 | 0 |
| 1986 | 5 | 0 |
| 1987 | 4 | 0 |
| 1988 | 8 | 0 |
| 1989 | 9 | 0 |
| 1990 | 7 | 0 |
| 1991 | 10 | 0 |
| 1992 | 17 | 0 |
| 1993 | 8 | 0 |
| 1994 | 7 | 0 |
| 1995 | 10 | 0 |
| 1996 | 11 | 0 |
| 1997 | 25 | 0 |
| 1998 | 29 | 0 |
| 1999 | 23 | 0 |
| 2000 | 26 | 0 |
| 2001 | 27 | 3 |
| 2002 | 46 | 24 |
| 2003 | 32 | 37 |
| 2004 | 34 | 37 |
| 2005 | 25 | 40 |
| 2006 | 20 | 27 |
| 2007 | 12 | 24 |
| 2008 | 15 | 29 |
| 2009 | 9 | 22 |
| 2010 | 12 | 51 |
| 2011 | 19 | 28 |
| 2012 | 13 | 21 |
| 2013 | 25 | 32 |
| 2014 | 24 | 40 |
| 2015 | 33 | 19 |
| 2016 | 29 | 24 |
| 2017 | 19 | 25 |
| 2018 | 27 | 22 |
| 2019 | 20 | 19 |
| 2020 | 17 | 33 |
| 2021 | 18 | 24 |
| 2022 | 7 | 30 |
| 2023 | 18 | 35 |
| 2024 | 19 | 20 |
| 2025 | 17 | 24 |
| 2026 | 8 | 38 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Dual catalyst system for mass vinyl addition and cationic polymerizable compositions22 Sep 2026US 12,742,041 B2Promerus, LLC
- Method for producing polymer4 Aug 2026US 12,698,361 B2Nissan Chemical Corporation
- Method for preparing polyether amine catalyst, and polyether amine14 Jul 2026US 12,679,931 B2Shangyu Huangma Surface Activated Reagent Research Institute Co., Ltd.
- Alkylene oxide polymerization using aluminum compounds and cyclic amidines26 May 2026US 12,637,541 B2Dow Global Technologies LLC
- Method for sequence controllable block copolymerization of cyclic ester and epoxy monomers28 Apr 2026US 12,612,490 B2South China University of Technology
- Process for manufacturing polyalkylene glycols1 Oct 2026US 2026/0297251 A1BASF SE
- Double metal cyanide catalyst and method for preparing same20 Aug 2026US 2026/0241373 A1Gs Caltex Corporation
- Batch process for preparing a polyether alcohol using a double metal cyanide catalyst6 Aug 2026US 2026/0226233 A1Shell USA, Inc.
- Batch process for preparing a polyether alcohol using a double metal cyanide catalyst6 Aug 2026US 2026/0226234 A1Shell USA, Inc.
- Controlled addition of ligand in polyol synthesis30 Jul 2026US 2026/0217898 A1Repsol, S. A.
Most cited
By later US patents
- Process for preparing metal cyanide complex catalyst287US 5,158,922 AARCO Chemical Technology, L. P. · 1992
- Double metal cyanide complex catalysts279US 5,470,813 AARCO Chemical Technology, L. P. · 1995
- Highly active double metal cyanide catalysts250US 5,482,908 AARCO Chemical Technology, L. P. · 1996
- Polyethers and method for making the same241US 3,941,849 AThe General Tire & Rubber Company · 1976
- Catalysts for the polymerization of epoxides and process for the preparation of such catalysts144US 4,477,589 AShell Oil Company · 1984