C07B 41/04
Formation or introduction of functional groups containing oxygen: of ether, acetal or
Official title: of ether, acetal or ketal groups
C07B41/04 (Formation or introduction of functional groups containing oxygen: of ether, acetal or) appears on 56 US grants and 63 published applications in this corpus.
Search patents in C07B- Granted patents
- 56
- Published applications
- 63
- Assignees
- 57
- Inventors
- 186
- Latest grant
- 25 Mar 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 4 | 0 |
| 1993 | 2 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 3 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 1 |
| 2002 | 3 | 1 |
| 2003 | 0 | 4 |
| 2004 | 5 | 7 |
| 2005 | 2 | 4 |
| 2006 | 4 | 2 |
| 2007 | 1 | 2 |
| 2008 | 1 | 0 |
| 2009 | 1 | 2 |
| 2010 | 0 | 2 |
| 2011 | 0 | 1 |
| 2012 | 1 | 0 |
| 2013 | 0 | 2 |
| 2014 | 1 | 1 |
| 2015 | 5 | 1 |
| 2016 | 1 | 2 |
| 2017 | 1 | 1 |
| 2018 | 0 | 6 |
| 2019 | 2 | 2 |
| 2020 | 4 | 5 |
| 2021 | 3 | 4 |
| 2022 | 3 | 3 |
| 2023 | 3 | 1 |
| 2024 | 0 | 5 |
| 2025 | 1 | 3 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Methods for producing alkylbenzenes, paraffins, olefins and oxo alcohols from waste plastic feedstocks25 Mar 2025US 12,258,539 B2The Procter & Gamble Company
- Preparation and application of a 5-bromoquinazoline derivative12 Dec 2023US 11,840,537 B2Hefei University of Technology
- Difluoromethoxylation and trifluoromethoxylation compositions and methods for synthesizing same19 Sep 2023US 11,760,701 B2The Research Foundation for the State University of New Yrok
- Δ-8-tetrahydrocannabinol from cannabidiol extracted from hemp12 Sep 2023US 11,753,390 B2Cct Sciences, LLC
- Method for oxidative cleavage of compounds with unsaturated double bond9 Aug 2022US 11,407,692 B2National Tsing Hua University
- Nano-emulsion compositions containing cannabinoids4 Jun 2026US 2026/0152478 A1Cct Sciences, LLC
- Methods for producing alkylbenzenes, paraffins, olefins and oxo alcohols from waste plastic feedstocks31 Jul 2025US 2025/0243428 A1The Procter & Gamble Company
- Method of forming bond by coupling reaction19 Jun 2025US 2025/0197353 A1
- Novel dealkoxyphenylation reaction13 Mar 2025US 2025/0084118 A1Daiichi Sankyo Company, Limited
- Photochemical preparation of fluorine-containing compounds12 Sep 2024US 2024/0300878 A1WiSys Technology Foundation, Inc.
Most cited
By later US patents
- Copper-catalyzed formation of carbon-heteroatom and carbon-carbon bonds78US 6,759,554 B2Massachusetts Institute of Technology · 2004
- Diaryl ether condensation reactions77US 6,762,329 B2Massachusetts Institute of Technology · 2004
- Copper-catalyzed formation of carbon-heteroatom and carbon-carbon bonds72US 6,867,298 B2Massachusetts Institute of Technology · 2005
- Copper-catalyzed formation of carbon-heteroatom and carbon-carbon bonds62US 7,115,784 B2Massachusetts Institute of Technology · 2006
- Alkoxylation of active hydrogen-containing compounds28US 5,104,987 AUnion Carbide Chemicals & Plastics Technology Corporation · 1992