C07C 31/22
Trihydroxylic alcohols
Official title: Trihydroxylic alcohols, e.g. glycerol
C07C31/22 (Trihydroxylic alcohols) appears on 84 US grants and 74 published applications in this corpus.
Search patents in C07C- Granted patents
- 84
- Published applications
- 74
- Assignees
- 63
- Inventors
- 182
- Latest grant
- 22 Apr 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 3 | 0 |
| 1981 | 3 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 2 | 0 |
| 1991 | 4 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 3 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 1 |
| 2002 | 1 | 0 |
| 2003 | 2 | 0 |
| 2004 | 0 | 2 |
| 2005 | 0 | 3 |
| 2006 | 1 | 3 |
| 2007 | 1 | 1 |
| 2008 | 4 | 3 |
| 2009 | 1 | 2 |
| 2010 | 3 | 1 |
| 2011 | 3 | 2 |
| 2012 | 3 | 5 |
| 2013 | 2 | 4 |
| 2014 | 2 | 2 |
| 2015 | 4 | 3 |
| 2016 | 2 | 3 |
| 2017 | 1 | 4 |
| 2018 | 4 | 7 |
| 2019 | 3 | 10 |
| 2020 | 6 | 6 |
| 2021 | 6 | 3 |
| 2022 | 0 | 1 |
| 2023 | 3 | 1 |
| 2024 | 2 | 2 |
| 2025 | 2 | 3 |
| 2026 | 0 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Dehydration and cracking of alpha-, beta-dihydroxy carbonyl compounds to lactic acid and other products22 Apr 2025US 12,281,067 B2Archer Daniels Midland Company
- Coated biological composition18 Feb 2025US 12,226,532 B2Vivex Biologics Group, Inc.
- Processes to create multiple value streams from biomass sources12 Nov 2024US 12,139,451 B2Intercontinental Great Brands LLC
- Polyglycolic acid resin and production process thereof20 Aug 2024US 12,065,531 B2Pujing Chemical Industry Co., Ltd.
- Processes to create multiple value streams from biomass sources12 Dec 2023US 11,840,500 B2Intercontinental Great Brands LLC
- Lithography method8 Oct 2026US 2026/0310079 A1Taiwan Semiconductor Manufacturing Company.Ltd
- Composition and process of making bio-based upcycled oils in flow reactors9 Jul 2026US 2026/0191749 A1RiKarbon, Inc.
- Direct conversion of glycerol to acrylic acid over wox/zrox and mixed metal oxide18 Dec 2025US 2025/0382254 A1
- Dehydration and cracking of alpha-, beta-dihydroxy carbonyl compounds to lactic acid and other products18 Sep 2025US 2025/0289777 A1Archer Daniels Midland Company
- Systems and methods for using glycerol-based scale inhibitors in waste streams14 Aug 2025US 2025/0257023 A1Cameron International Corporation
Most cited
By later US patents
- Guanine derivatives44US 5,075,445 ABeecham Group Limited · 1991
- Cycloalkyl-hydroxyl compounds and compositions for cholesterol management and related uses34US 7,405,226 B2Pfizer Inc. · 2008
- Hydrocracking of carbohydrates making glycerol, glycols and other polyols32US 5,026,927 AThe United States of America as represented by the United States Department of Energy · 1991
- Process for purifying crude glycerol30US 4,990,695 AUnilever Patent Holdings B.V. · 1991
- Hydroxyl compounds and compositions for cholesterol management and related uses29US 7,335,799 B2Esperion Therapeutics, Inc. · 2008