C07C 37/56
By replacing a carboxyl or aldehyde group by a hydroxy group
Official title: by replacing a carboxyl or aldehyde group by a hydroxy group
C07C37/56 (By replacing a carboxyl or aldehyde group by a hydroxy group) appears on 46 US grants and 33 published applications in this corpus.
Search patents in C07C- Granted patents
- 46
- Published applications
- 33
- Assignees
- 40
- Inventors
- 124
- Latest grant
- 23 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 2 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 3 | 0 |
| 1984 | 3 | 0 |
| 1985 | 0 | 0 |
| 1986 | 2 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 2 | 0 |
| 1994 | 2 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 1 |
| 2009 | 0 | 0 |
| 2010 | 0 | 5 |
| 2011 | 2 | 0 |
| 2012 | 2 | 0 |
| 2013 | 2 | 4 |
| 2014 | 3 | 1 |
| 2015 | 0 | 0 |
| 2016 | 1 | 3 |
| 2017 | 0 | 0 |
| 2018 | 0 | 1 |
| 2019 | 1 | 2 |
| 2020 | 2 | 2 |
| 2021 | 1 | 4 |
| 2022 | 4 | 4 |
| 2023 | 1 | 2 |
| 2024 | 1 | 2 |
| 2025 | 1 | 2 |
| 2026 | 3 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- High purity 4-hydroxystyrene solution, method of producing the same, and method of producing 4-hydroxystyrene polymer23 Jun 2026US 12,662,443 B2Maruzen Petrochemical Co., Ltd.
- Phenol recovery of bisphenol-A mother liquor purge using purification train in the phenol production unit21 Apr 2026US 12,606,510 B2Sabic Global Technologies B.V.
- Production of aromatic acids and phenolics20 Jan 2026US 12,528,758 B2Nederlandse Organisatie voor toegepast-natuurwetenschappelijk onderzoek TNO
- Applications of known and novel cannabinoids18 Mar 2025US 12,252,477 B2Bessor Pharma, LLC
- Method for decomposing phenol-based by-product10 Sep 2024US 12,084,408 B2LG Chem.Ltd.
- Precursors of phenolic fragrant compounds31 Jul 2025US 2025/0243427 A1Givaudan SA
- Production of phenol from a biomass24 Apr 2025US 2025/0129004 A1Syensqo SA
- Rescorcinols, methods for their manufacture, and uses thereof1 Aug 2024US 2024/0254066 A1
- Production of aromatic acids and phenolics29 Feb 2024US 2024/0067593 A1Nederlandse Organisatie voor toegepast-natuurwetenschappelijk onderzoek TNO
- Phenol recovery of bisphenol-a mother liquor purge using purification train in the phenol production unit21 Dec 2023US 2023/0406797 A1Sabic Global Technologies B.V.
Most cited
By later US patents
- Preparation of polyphenols by oxidation of hydroxybenzaldehydes41US 4,435,601 ARhone-Poulenc Industries · 1984
- Propylene impact copolymer and method21US 7,935,766 B2Dow Global Technologies LLC · 2011
- Random propylene copolymer compositions, articles and process21US 8,106,138 B2Dow Global Technologies LLC · 2012
- Propylene-based polymer, articles, and process for producing same17US 8,263,692 B2Dow Global Technologies LLC · 2012
- Enhanced procatalyst composition and process9US 8,778,826 B2W. R. Grace & Co.-Conn. · 2014