C07C 37/84
By crystallisation
Official title: by crystallisation
C07C37/84 (By crystallisation) appears on 232 US grants and 157 published applications in this corpus.
Search patents in C07C- Granted patents
- 232
- Published applications
- 157
- Assignees
- 123
- Inventors
- 598
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 7 | 0 |
| 1977 | 3 | 0 |
| 1978 | 5 | 0 |
| 1979 | 3 | 0 |
| 1980 | 5 | 0 |
| 1981 | 7 | 0 |
| 1982 | 3 | 0 |
| 1983 | 2 | 0 |
| 1984 | 11 | 0 |
| 1985 | 8 | 0 |
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 2 | 0 |
| 1989 | 1 | 0 |
| 1990 | 7 | 0 |
| 1991 | 3 | 0 |
| 1992 | 6 | 0 |
| 1993 | 4 | 0 |
| 1994 | 8 | 0 |
| 1995 | 7 | 0 |
| 1996 | 3 | 0 |
| 1997 | 3 | 0 |
| 1998 | 6 | 0 |
| 1999 | 3 | 0 |
| 2000 | 2 | 0 |
| 2001 | 4 | 1 |
| 2002 | 1 | 2 |
| 2003 | 3 | 3 |
| 2004 | 9 | 7 |
| 2005 | 4 | 8 |
| 2006 | 8 | 4 |
| 2007 | 1 | 1 |
| 2008 | 1 | 6 |
| 2009 | 3 | 4 |
| 2010 | 2 | 5 |
| 2011 | 5 | 4 |
| 2012 | 4 | 2 |
| 2013 | 3 | 2 |
| 2014 | 4 | 2 |
| 2015 | 2 | 1 |
| 2016 | 0 | 7 |
| 2017 | 4 | 3 |
| 2018 | 2 | 10 |
| 2019 | 10 | 11 |
| 2020 | 18 | 14 |
| 2021 | 7 | 10 |
| 2022 | 7 | 14 |
| 2023 | 6 | 8 |
| 2024 | 8 | 9 |
| 2025 | 3 | 15 |
| 2026 | 2 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Process configuration for a single phenol purification train for production of phenol and bisphenol-A in an integrated process25 Aug 2026US 12,715,830 B2Sabic Global Technologies B.V.
- Processes and systems for converting cannabinoids into cannabinoid derivatives and isolating the same5 May 2026US 12,616,728 B2Super Critical IP, LLC
- Synthesis and purification of cannabigerol and its application9 Dec 2025US 12,491,145 B2Symrise AG
- Methods to separate cannabinoids from impurities by crystallization19 Aug 2025US 12,391,637 B2Natural Extraction Systems, LLC
- Process for reducing by-products in bisphenol A reaction system1 Jul 2025US 12,344,575 B1Tianjin University
- Method of purifying cannabinoid components from plant extracts10 Sep 2026US 2026/0265167 A1
- Process for the purification of cannabidiol from herbal material30 Apr 2026US 2026/0115212 A1A2W Pharma Limited
- Synthesis and purification of cannabigerol and its application5 Mar 2026US 2026/0060906 A1Symrise AG
- Method for degrading polycarbonate5 Feb 2026US 2026/0035535 A1Nan Ya Plastics Corporation
- Compositions and methods to separate cannabinoids from impurities by crystallization4 Dec 2025US 2025/0368594 A1Natural Extraction Systems, LLC
Most cited
By later US patents
- Process for manufacture of bisphenol31US 5,783,733 AGeneral Electric Company · 1998
- Polycarbonate compositions having improved barrier properties25US 4,304,899 AGeneral Electric Company · 1981
- Process for crystallizing an adduct of 2,2-di(4-hydroxyphenyl) propane and phenol23US 4,209,646 ARhone-Poulenc Industries · 1980
- Countercurrent multi-stage water crystallization of aromatic compounds23US 4,861,919 AThe Dow Chemical Company · 1989
- Process and composition23US 5,243,093 AGeneral Electric Company · 1993