A61K 8/4913
Having five membered rings
Official title: {having five membered rings, e.g. pyrrolidone carboxylic acid}
A61K8/4913 (Having five membered rings) appears on 1,100 US grants and 1,253 published applications in this corpus.
Search patents in A61K- Granted patents
- 1,100
- Published applications
- 1,253
- Assignees
- 481
- Inventors
- 2,423
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 6 | 0 |
| 1977 | 4 | 0 |
| 1978 | 4 | 0 |
| 1979 | 3 | 0 |
| 1980 | 4 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 2 | 0 |
| 1984 | 2 | 0 |
| 1985 | 2 | 0 |
| 1986 | 5 | 0 |
| 1987 | 2 | 0 |
| 1988 | 9 | 0 |
| 1989 | 23 | 0 |
| 1990 | 14 | 0 |
| 1991 | 17 | 0 |
| 1992 | 19 | 0 |
| 1993 | 18 | 0 |
| 1994 | 17 | 0 |
| 1995 | 20 | 0 |
| 1996 | 23 | 0 |
| 1997 | 61 | 0 |
| 1998 | 38 | 0 |
| 1999 | 32 | 0 |
| 2000 | 26 | 0 |
| 2001 | 37 | 16 |
| 2002 | 31 | 55 |
| 2003 | 51 | 68 |
| 2004 | 39 | 68 |
| 2005 | 14 | 49 |
| 2006 | 22 | 29 |
| 2007 | 24 | 39 |
| 2008 | 15 | 31 |
| 2009 | 9 | 35 |
| 2010 | 16 | 38 |
| 2011 | 16 | 22 |
| 2012 | 9 | 46 |
| 2013 | 26 | 35 |
| 2014 | 30 | 60 |
| 2015 | 36 | 54 |
| 2016 | 35 | 76 |
| 2017 | 30 | 50 |
| 2018 | 41 | 56 |
| 2019 | 40 | 57 |
| 2020 | 34 | 76 |
| 2021 | 49 | 62 |
| 2022 | 44 | 57 |
| 2023 | 24 | 51 |
| 2024 | 28 | 36 |
| 2025 | 27 | 54 |
| 2026 | 22 | 33 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Tooth whitening film, process of manufacturing thereof and a method of using such a film6 Oct 2026US 12,751,906 B2Bsolve Limited
- Cosmetic composition29 Sep 2026US 12,746,193 B2Ajinomoto Co., Inc.
- Bioactive phytochemicals in Zizyphus and guarana29 Sep 2026US 12,747,206 B2Phytoquest Limited
- Surfactant containing formulation of pseudo-ceramides22 Sep 2026US 12,740,928 B2Symrise AG
- Topical cosmetic composition, use of the composition and tonic for facial application11 Aug 2026US 12,702,637 B2Natura Cosmeticos S.A.
- Adhesive photoprotective compounds and uses thereof8 Oct 2026US 2026/0306380 A1Skinosive
- Agent for oxidatively dyeing keratin fibers8 Oct 2026US 2026/0306381 A1Henkel AG & Co. KGaA
- Anti-wrinkle agent24 Sep 2026US 2026/0283917 A1Shiseido Company, Ltd.
- Agent for oxidative dyeing of keratin fibers, containing isatin and at least one defined polymer17 Sep 2026US 2026/0272805 A1Henkel AG & Co. KGaA
- Cosmetic skin formulations and methods of using thereof3 Sep 2026US 2026/0256685 A1Olaplex, Inc.
Most cited
By later US patents
- Amphoteric compositions and polymeric forms of alpha hydroxyacids, and their therapeutic use354US 5,091,171 A1992
- Cosmetic composition containing a mixture of metal oxide nanopigments and melanine pigments142US 5,695,747 AL'oreal · 1997
- Topical anti-acne composition117US 6,433,024 B12002
- Method for treatment of acne and/or the effects of ageing using HMG-coenzyme A-reductase inhibitor and compositions for performing the same110US 5,733,558 AL'oreal · 1998
- Amphoteric compostion and polymeric forms of alpha hydroxyacids, and their therapeutic use105US 5,886,042 ATristrata Technology, Inc. · 1999