C07C 37/72
By liquid-liquid treatment
Official title: by liquid-liquid treatment
C07C37/72 (By liquid-liquid treatment) appears on 147 US grants and 108 published applications in this corpus.
Search patents in C07C- Granted patents
- 147
- Published applications
- 108
- Assignees
- 104
- Inventors
- 452
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 6 | 0 |
| 1977 | 3 | 0 |
| 1978 | 5 | 0 |
| 1979 | 2 | 0 |
| 1980 | 7 | 0 |
| 1981 | 5 | 0 |
| 1982 | 5 | 0 |
| 1983 | 4 | 0 |
| 1984 | 2 | 0 |
| 1985 | 3 | 0 |
| 1986 | 1 | 0 |
| 1987 | 2 | 0 |
| 1988 | 0 | 0 |
| 1989 | 2 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 2 | 0 |
| 1994 | 2 | 0 |
| 1995 | 0 | 0 |
| 1996 | 3 | 0 |
| 1997 | 1 | 0 |
| 1998 | 2 | 0 |
| 1999 | 2 | 0 |
| 2000 | 4 | 0 |
| 2001 | 2 | 0 |
| 2002 | 1 | 1 |
| 2003 | 3 | 5 |
| 2004 | 4 | 2 |
| 2005 | 2 | 2 |
| 2006 | 2 | 1 |
| 2007 | 1 | 1 |
| 2008 | 1 | 1 |
| 2009 | 1 | 2 |
| 2010 | 0 | 1 |
| 2011 | 2 | 1 |
| 2012 | 1 | 2 |
| 2013 | 1 | 1 |
| 2014 | 2 | 1 |
| 2015 | 0 | 2 |
| 2016 | 2 | 3 |
| 2017 | 2 | 0 |
| 2018 | 3 | 10 |
| 2019 | 6 | 10 |
| 2020 | 7 | 8 |
| 2021 | 11 | 14 |
| 2022 | 7 | 17 |
| 2023 | 6 | 9 |
| 2024 | 5 | 6 |
| 2025 | 4 | 4 |
| 2026 | 5 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Catalytic and continuous thermochemical process of production of valuable derivatives from organic materials and/or waste6 Oct 2026US 12,753,141 B2Instituto Superior Tecnico
- Industrial extraction method of cannabidiol11 Aug 2026US 12,703,672 B2Chenguang Biotech Group Co., Ltd.
- Cresol preparation method for inhibiting production of byproduct26 May 2026US 12,637,402 B2Hanwha Solutions Corporation
- Synergistic use of phenol purification train in phenol production unit for processing phenolic water from bisphenol-a production unit12 May 2026US 12,623,986 B2Sabic Global Technologies B.V.
- Continuos flow synthesis of cannabidiol7 Apr 2026US 12,595,219 B2Indena S. P. A.
- Method of purifying cannabinoid components from plant extracts10 Sep 2026US 2026/0265167 A1
- Alkyl bisphenol composition and method for preparing the same2 Jul 2026US 2026/0184658 A1Industrial Technology Research Institute
- Synthesis and purification of cannabigerol and its application5 Mar 2026US 2026/0060906 A1Symrise AG
- Compositions that contain lipophilic plant material and surfactant, and related methods12 Feb 2026US 2026/0042974 A1
- Compositions and methods to separate cannabinoids from impurities by crystallization4 Dec 2025US 2025/0368594 A1Natural Extraction Systems, LLC
Most cited
By later US patents
- Purification of phenol with reduced energy consumption24US 4,298,765 AAllied Corporation · 1981
- Phenolic compounds containing/neutral fractions extract and products derived therefrom from fractionated fast-pyrolysis oils23US 5,223,601 AMidwest Research Institute Ventures, Inc. · 1993
- Process for the preparation of tetrabromo-4,4'-alkylidenediphenols22US 5,068,463 A1991
- Process for the purification of bisphenol A19US 3,972,950 AShell Oil Company · 1976
- Removal and neutralization of acid catalyst from products of cumene hydroperoxide cleavage19US 5,510,543 AGeneral Electric Company · 1996