C08G 65/2663
Metal cyanide catalysts, i.e. dmc's
Official title: {Metal cyanide catalysts, i.e. DMC's}
C08G65/2663 (Metal cyanide catalysts, i.e. dmc's) appears on 405 US grants and 430 published applications in this corpus.
Search patents in C08G- Granted patents
- 405
- Published applications
- 430
- Assignees
- 91
- Inventors
- 770
- Latest grant
- 30 Dec 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 2 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 2 | 0 |
| 1990 | 0 | 0 |
| 1991 | 3 | 0 |
| 1992 | 8 | 0 |
| 1993 | 5 | 0 |
| 1994 | 2 | 0 |
| 1995 | 4 | 0 |
| 1996 | 9 | 0 |
| 1997 | 15 | 0 |
| 1998 | 17 | 0 |
| 1999 | 14 | 0 |
| 2000 | 12 | 0 |
| 2001 | 11 | 1 |
| 2002 | 18 | 12 |
| 2003 | 20 | 23 |
| 2004 | 21 | 21 |
| 2005 | 15 | 28 |
| 2006 | 13 | 14 |
| 2007 | 7 | 16 |
| 2008 | 9 | 22 |
| 2009 | 6 | 15 |
| 2010 | 11 | 23 |
| 2011 | 10 | 7 |
| 2012 | 9 | 17 |
| 2013 | 14 | 25 |
| 2014 | 10 | 25 |
| 2015 | 22 | 8 |
| 2016 | 13 | 18 |
| 2017 | 14 | 16 |
| 2018 | 20 | 17 |
| 2019 | 16 | 10 |
| 2020 | 11 | 14 |
| 2021 | 10 | 14 |
| 2022 | 1 | 14 |
| 2023 | 7 | 23 |
| 2024 | 10 | 12 |
| 2025 | 11 | 14 |
| 2026 | 0 | 21 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Preparation process of allyl alcohol polyether with low potassium and sodium content30 Dec 2025US 12,509,550 B2Shangyu Huangma Surface Activated Reagent Research Institute Co., Ltd.
- Low foaming hydraulic fluids having biodegradable polyalkylene glycol rheology modifiers useful in subsea applications18 Nov 2025US 12,473,399 B2Dow Global Technologies LLC
- Process for preparing a polyoxyalkylene carbonate polyol12 Aug 2025US 12,384,869 B2Covestro Deutschland AG
- Polyol block copolymer, compositions and processes therefor12 Aug 2025US 12,384,880 B2Econic Technologies Ltd.
- Low-viscosity silane-terminated resin for sealant and preparation method thereof5 Aug 2025US 12,378,451 B2Shangyu Huangma Surface Activated Reagent Research Institute Co., Ltd.
- 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.
- Preparation method of double metal cyanide catalyst for preparing a polycarbonate-ether23 Jul 2026US 2026/0208170 A1
- Alkoxylation processes using phosphorus and double metal cyanide catalysts23 Jul 2026US 2026/0208173 A1Dow Global Technologies LLC
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