A61K 31/191
Having two or more hydroxy groups
Official title: having two or more hydroxy groups, e.g. gluconic acid
A61K31/191 (Having two or more hydroxy groups) appears on 503 US grants and 752 published applications in this corpus.
Search patents in A61K- Granted patents
- 503
- Published applications
- 752
- Assignees
- 400
- Inventors
- 1,239
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 2 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 4 | 0 |
| 1996 | 22 | 0 |
| 1997 | 37 | 0 |
| 1998 | 6 | 0 |
| 1999 | 14 | 0 |
| 2000 | 5 | 0 |
| 2001 | 7 | 4 |
| 2002 | 6 | 9 |
| 2003 | 6 | 14 |
| 2004 | 9 | 17 |
| 2005 | 3 | 12 |
| 2006 | 4 | 17 |
| 2007 | 3 | 13 |
| 2008 | 3 | 12 |
| 2009 | 2 | 13 |
| 2010 | 11 | 24 |
| 2011 | 9 | 25 |
| 2012 | 17 | 28 |
| 2013 | 12 | 31 |
| 2014 | 21 | 29 |
| 2015 | 21 | 43 |
| 2016 | 19 | 46 |
| 2017 | 29 | 42 |
| 2018 | 31 | 45 |
| 2019 | 28 | 44 |
| 2020 | 25 | 51 |
| 2021 | 35 | 46 |
| 2022 | 23 | 40 |
| 2023 | 23 | 45 |
| 2024 | 25 | 39 |
| 2025 | 26 | 31 |
| 2026 | 14 | 32 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
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Most cited
By later US patents
- Amphoteric compositions and polymeric forms of alpha hydroxyacids, and their therapeutic use354US 5,091,171 A1992
- Medicament preparation and treatment devices, methods, and systems259US 10,478,544 B2NxStage Medical, Inc. · 2019
- Microbiologically sound and stable solutions of gamma-hydroxybutyrate salt for the treatment of narcolepsy117US 8,263,650 B2Jazz Pharmaceuticals, Inc. · 2012
- Amphoteric compostion and polymeric forms of alpha hydroxyacids, and their therapeutic use105US 5,886,042 ATristrata Technology, Inc. · 1999
- Method of using beta hydroxy acids for treating wrinkles98US 5,889,054 ATristrata Technology, Inc. · 1999