C07C 45/84
By azeotropic distillation
Official title: by azeotropic distillation
C07C45/84 (By azeotropic distillation) appears on 48 US grants and 22 published applications in this corpus.
Search patents in C07C- Granted patents
- 48
- Published applications
- 22
- Assignees
- 36
- Inventors
- 135
- Latest grant
- 27 May 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 4 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 3 | 0 |
| 1996 | 3 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 0 |
| 2002 | 3 | 1 |
| 2003 | 1 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 1 |
| 2006 | 1 | 1 |
| 2007 | 0 | 0 |
| 2008 | 1 | 0 |
| 2009 | 1 | 2 |
| 2010 | 1 | 0 |
| 2011 | 1 | 0 |
| 2012 | 0 | 1 |
| 2013 | 1 | 1 |
| 2014 | 0 | 0 |
| 2015 | 1 | 0 |
| 2016 | 0 | 3 |
| 2017 | 1 | 1 |
| 2018 | 1 | 2 |
| 2019 | 3 | 3 |
| 2020 | 3 | 1 |
| 2021 | 0 | 0 |
| 2022 | 0 | 2 |
| 2023 | 1 | 1 |
| 2024 | 1 | 0 |
| 2025 | 1 | 1 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Method for continuous synthesis of acylnaphthalene with acylation liquid27 May 2025US 12,312,304 B2CCTEG China Coal Research Institute
- Aldehyde removal process for methanol carbonylation10 Dec 2024US 12,162,830 B2Celanese International Corporation
- Process for preparing methacrolein from formaldehyde and propionaldehyde and preparation plant for the purpose20 Jun 2023US 11,680,033 B2Rohm Co., Ltd.
- Thermally integrated distillation systems and processes using the same17 Nov 2020US 10,835,837 B2Eastman Chemical Company
- Azeotrope or azeotrope-like compositions of trifluoroiodomethane (CF3I) and hexafluoroacetone (HFA)26 May 2020US 10,662,135 B2Honeywell International Inc.
- Removal of aldehydes in acetic acid production22 Jan 2026US 2026/0022090 A1LyondellBasell Acetyls, LLC
- Aldehyde removal process for methanol carbonylation27 Feb 2025US 2025/0066281 A1Celanese International Corporation
- Method for continuous synthesis of acylnaphthalene with acylation liquid30 Mar 2023US 2023/0095165 A1CCTEG China Coal Research Institute
- Process for preparing methacrolein from formaldehyde and propionaldehyde and preparation plant for the purpose22 Sep 2022US 2022/0298094 A1Rohm Co., Ltd.
- Aldehyde removal process for methanol carbonylation16 Jun 2022US 2022/0185760 A1Celanese International Corporation
Most cited
By later US patents
- Continuous process for recovery of cyclohexanone30US 3,946,076 AStamicarbon B. V. · 1976
- Process for the continuous separation of water from methyl tert-butyl ether mixtures29US 4,943,354 ADeutsche Texaco Aktiengesellschaft · 1990
- Method of producing aldehydes and carboxylic acids by oxidizing primary alcohols17US 6,476,260 B1RWE-DEA Aktiengesellschraft fur Mineraloel und Chemie · 2002
- Recovery of acetone produced by carbonylation8US 4,252,748 AHalcon Research and Development Corp. · 1981
- Dewatering process7US 6,478,929 B1Lucite International UK Limited · 2002