C07C 29/80
By distillation
Official title: by distillation
C07C29/80 (By distillation) appears on 945 US grants and 842 published applications in this corpus.
Search patents in C07C- Granted patents
- 945
- Published applications
- 842
- Assignees
- 398
- Inventors
- 1,992
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 10 | 0 |
| 1978 | 5 | 0 |
| 1979 | 9 | 0 |
| 1980 | 19 | 0 |
| 1981 | 21 | 0 |
| 1982 | 14 | 0 |
| 1983 | 17 | 0 |
| 1984 | 14 | 0 |
| 1985 | 9 | 0 |
| 1986 | 11 | 0 |
| 1987 | 19 | 0 |
| 1988 | 9 | 0 |
| 1989 | 7 | 0 |
| 1990 | 11 | 0 |
| 1991 | 6 | 0 |
| 1992 | 11 | 0 |
| 1993 | 6 | 0 |
| 1994 | 16 | 0 |
| 1995 | 25 | 0 |
| 1996 | 9 | 0 |
| 1997 | 10 | 0 |
| 1998 | 22 | 0 |
| 1999 | 18 | 0 |
| 2000 | 10 | 0 |
| 2001 | 13 | 2 |
| 2002 | 16 | 8 |
| 2003 | 10 | 11 |
| 2004 | 4 | 16 |
| 2005 | 8 | 8 |
| 2006 | 11 | 5 |
| 2007 | 8 | 5 |
| 2008 | 2 | 28 |
| 2009 | 6 | 16 |
| 2010 | 8 | 25 |
| 2011 | 22 | 41 |
| 2012 | 28 | 64 |
| 2013 | 44 | 64 |
| 2014 | 62 | 47 |
| 2015 | 60 | 41 |
| 2016 | 33 | 41 |
| 2017 | 23 | 31 |
| 2018 | 36 | 22 |
| 2019 | 32 | 34 |
| 2020 | 32 | 39 |
| 2021 | 26 | 37 |
| 2022 | 27 | 54 |
| 2023 | 29 | 60 |
| 2024 | 31 | 59 |
| 2025 | 41 | 44 |
| 2026 | 21 | 40 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Recovering mono-ethylene glycol8 Sep 2026US 12,729,173 B2Changchun Meihe Science and Technology Development Co., Ltd.
- Green methanol production25 Aug 2026US 12,715,827 B2ZoneFlow Reactor Technologies, LLC
- Process for recovering isoprenol14 Jul 2026US 12,679,792 B2BASF SE
- Recovery of diols from a mixture14 Jul 2026US 12,679,793 B2Novamont S. p. A.
- System and method for enhanced ethanol production14 Jul 2026US 12,679,794 B2ICM, Inc.
- Process for the preparation of polyisobutene from olefins from isobutanol obtained from mixed guerbet reaction of ethanol and methanol8 Oct 2026US 2026/0308287 A1BASF SE
- Process for the recovery of low-boiling point components from an ethanol stream1 Oct 2026US 2026/0297630 A1Braskem S/A
- Process for the recovery of low-boiling point components from an ethanol stream1 Oct 2026US 2026/0297631 A1Braskem S/A
- Process for producing pure methanol from a carbon dioxide-rich synthesis gas with single column purification24 Sep 2026US 2026/0285788 A1L Air Liquide, Societe Anonyme Pour L'Etude et L'Exploitation des Procedes Georges Claude
- Method for purification of ethanol using extractive distillation24 Sep 2026US 2026/0285790 A1Air Company Holdings, Inc.
Most cited
By later US patents
- Separation of 1-pentanol from cyclopentanol by extractive distillation258US 5,320,715 A1994
- Process for the preparation of ethanol161US 4,395,576 AShell Oil Company · 1983
- Continuous production of ethanol and plural stage distillation of the same157US 4,454,358 ABASF SE · 1984
- Alcohol distillation process154US 3,990,952 ARaphael Katzen Associates International, Inc. · 1976
- Low energy extractive distillation process for producing anhydrous ethanol152US 5,035,776 AUniversity of Massachusetts · 1991