C07C 29/76
By physical treatment
Official title: by physical treatment
C07C29/76 (By physical treatment) appears on 1,623 US grants and 1,407 published applications in this corpus.
Search patents in C07C- Granted patents
- 1,623
- Published applications
- 1,407
- Assignees
- 720
- Inventors
- 3,521
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 9 | 0 |
| 1977 | 12 | 0 |
| 1978 | 11 | 0 |
| 1979 | 10 | 0 |
| 1980 | 23 | 0 |
| 1981 | 39 | 0 |
| 1982 | 31 | 0 |
| 1983 | 32 | 0 |
| 1984 | 34 | 0 |
| 1985 | 23 | 0 |
| 1986 | 24 | 0 |
| 1987 | 33 | 0 |
| 1988 | 25 | 0 |
| 1989 | 20 | 0 |
| 1990 | 26 | 0 |
| 1991 | 28 | 0 |
| 1992 | 25 | 0 |
| 1993 | 19 | 0 |
| 1994 | 23 | 0 |
| 1995 | 30 | 0 |
| 1996 | 14 | 0 |
| 1997 | 14 | 0 |
| 1998 | 27 | 0 |
| 1999 | 30 | 0 |
| 2000 | 16 | 0 |
| 2001 | 20 | 3 |
| 2002 | 23 | 17 |
| 2003 | 21 | 21 |
| 2004 | 10 | 26 |
| 2005 | 11 | 19 |
| 2006 | 23 | 15 |
| 2007 | 14 | 19 |
| 2008 | 10 | 47 |
| 2009 | 19 | 33 |
| 2010 | 16 | 60 |
| 2011 | 32 | 68 |
| 2012 | 45 | 89 |
| 2013 | 71 | 101 |
| 2014 | 89 | 80 |
| 2015 | 102 | 83 |
| 2016 | 62 | 78 |
| 2017 | 45 | 64 |
| 2018 | 63 | 43 |
| 2019 | 47 | 57 |
| 2020 | 61 | 62 |
| 2021 | 45 | 55 |
| 2022 | 32 | 76 |
| 2023 | 47 | 86 |
| 2024 | 47 | 88 |
| 2025 | 53 | 59 |
| 2026 | 37 | 58 |
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.
- Removal of sulfate from MEG streams using calcium chloride1 Sep 2026US 12,723,014 B2Cameron International Corporation
- Green methanol production25 Aug 2026US 12,715,827 B2ZoneFlow Reactor Technologies, LLC
- Systems and methods for a refinement processing of xylitol fermentation broth4 Aug 2026US 12,698,249 B2Zhejiang Huakang Pharmaceutical Co., Ltd.
- Method of extracting carbonic acid, aliphatic acids, esters and alcohols from an aqueous medium21 Jul 2026US 12,686,694 B2Evonik Operations GmbH
- 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
- A method for storing hydrogen in a reactor or a synthesis loop24 Sep 2026US 2026/0285677 A1Topsoe A/S
- 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
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