C09K 23/42
Ethers
Official title: Ethers, e.g. polyglycol ethers of alcohols or phenols
C09K23/42 (Ethers) appears on 391 US grants and 298 published applications in this corpus.
Search patents in C09K- Granted patents
- 391
- Published applications
- 298
- Assignees
- 239
- Inventors
- 1,100
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 5 | 0 |
| 1977 | 4 | 0 |
| 1978 | 3 | 0 |
| 1979 | 2 | 0 |
| 1980 | 5 | 0 |
| 1981 | 3 | 0 |
| 1982 | 5 | 0 |
| 1983 | 12 | 0 |
| 1984 | 13 | 0 |
| 1985 | 8 | 0 |
| 1986 | 6 | 0 |
| 1987 | 3 | 0 |
| 1988 | 6 | 0 |
| 1989 | 4 | 0 |
| 1990 | 13 | 0 |
| 1991 | 9 | 0 |
| 1992 | 9 | 0 |
| 1993 | 3 | 0 |
| 1994 | 7 | 0 |
| 1995 | 6 | 0 |
| 1996 | 9 | 0 |
| 1997 | 9 | 0 |
| 1998 | 10 | 0 |
| 1999 | 9 | 0 |
| 2000 | 11 | 0 |
| 2001 | 12 | 2 |
| 2002 | 8 | 8 |
| 2003 | 8 | 10 |
| 2004 | 7 | 7 |
| 2005 | 3 | 12 |
| 2006 | 3 | 4 |
| 2007 | 3 | 8 |
| 2008 | 5 | 9 |
| 2009 | 4 | 14 |
| 2010 | 5 | 13 |
| 2011 | 5 | 12 |
| 2012 | 9 | 4 |
| 2013 | 11 | 10 |
| 2014 | 9 | 12 |
| 2015 | 5 | 4 |
| 2016 | 8 | 7 |
| 2017 | 8 | 14 |
| 2018 | 9 | 27 |
| 2019 | 14 | 15 |
| 2020 | 19 | 24 |
| 2021 | 17 | 13 |
| 2022 | 6 | 21 |
| 2023 | 11 | 17 |
| 2024 | 6 | 12 |
| 2025 | 11 | 12 |
| 2026 | 11 | 7 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Composition with mixed C13-C14 alcohols and surfactants22 Sep 2026US 12,742,120 B2Dow Global Technologies LLC
- Composition comprising a comb copolymer1 Sep 2026US 12,723,152 B2BYK-Chemie GmbH
- Method of generating monodisperse emulsions18 Aug 2026US 12,708,886 B2The Regents of the University of California
- Polyalkyleneimine-based polymer as dispersants11 Aug 2026US 12,703,773 B2BASF SE
- Composition with mixed C8-C18 alcohols and surfactants thereof11 Aug 2026US 12,703,827 B2Dow Global Technologies LLC
- Surface-active agent30 Jul 2026US 2026/0218055 A1Econic Technologies Ltd.
- Non-ionic surfactants and methods of making and using the same2 Jul 2026US 2026/0184995 A1Life Technologies Corporation
- Di-Alkyl Chain Surfactants as a Main Surfactant for Enhancing Oil Recovery for Tight Oil Formations2 Jul 2026US 2026/0184996 A1Beijing Huamei, Inc.
- Novel wetting composition23 Apr 2026US 2026/0109901 A1Advanced Wetting Technologies Pty Ltd
- Composition for Wetting of Hydrophobic Soils12 Mar 2026US 2026/0071122 A1Ethox Chemicals, LLC
Most cited
By later US patents
- Process for preparing stable oil-in-water emulsions148US 4,254,104 AShiseido Company, Ltd. · 1981
- Nanoemulsion based on ethoxylated fatty ethers or on ethoxylated fatty esters and its uses in the cosmetics, dermatological and/or ophthalmological fields106US 6,375,960 B1L'oreal · 2002
- Polymer-microemulsion complexes for the enhanced recovery of oil102US 4,353,806 AExxon Research & Engineering Co. · 1982
- Method for making surfactant-templated, high-porosity thin films102US 6,270,846 B1Sandia Corporation · 2001
- Oil recovery process using polymer microemulsion complexes92US 4,360,061 AExxon Research & Engineering Co. · 1982