A61K 31/41
Having five-membered rings with two or more ring hetero atoms, at least
Official title: having five-membered rings with two or more ring hetero atoms, at least one of which being nitrogen, e.g. tetrazole
A61K31/41 (Having five-membered rings with two or more ring hetero atoms, at least) appears on 18,275 US grants and 30,955 published applications in this corpus.
Search patents in A61K- Granted patents
- 18,275
- Published applications
- 30,955
- Assignees
- 8,119
- Inventors
- 50,979
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 73 | 0 |
| 1977 | 49 | 0 |
| 1978 | 56 | 0 |
| 1979 | 42 | 0 |
| 1980 | 50 | 0 |
| 1981 | 59 | 0 |
| 1982 | 38 | 0 |
| 1983 | 43 | 0 |
| 1984 | 49 | 0 |
| 1985 | 55 | 0 |
| 1986 | 35 | 0 |
| 1987 | 48 | 0 |
| 1988 | 53 | 0 |
| 1989 | 56 | 0 |
| 1990 | 84 | 0 |
| 1991 | 63 | 0 |
| 1992 | 104 | 0 |
| 1993 | 116 | 0 |
| 1994 | 100 | 0 |
| 1995 | 126 | 0 |
| 1996 | 185 | 0 |
| 1997 | 252 | 0 |
| 1998 | 210 | 0 |
| 1999 | 257 | 0 |
| 2000 | 245 | 0 |
| 2001 | 300 | 113 |
| 2002 | 301 | 467 |
| 2003 | 292 | 706 |
| 2004 | 208 | 869 |
| 2005 | 221 | 842 |
| 2006 | 278 | 762 |
| 2007 | 216 | 778 |
| 2008 | 228 | 804 |
| 2009 | 192 | 814 |
| 2010 | 328 | 946 |
| 2011 | 342 | 1048 |
| 2012 | 459 | 1021 |
| 2013 | 656 | 1351 |
| 2014 | 895 | 1609 |
| 2015 | 989 | 1677 |
| 2016 | 1018 | 1704 |
| 2017 | 1186 | 1584 |
| 2018 | 1036 | 1575 |
| 2019 | 1055 | 1634 |
| 2020 | 1069 | 1608 |
| 2021 | 891 | 1661 |
| 2022 | 839 | 1619 |
| 2023 | 758 | 1546 |
| 2024 | 747 | 1542 |
| 2025 | 788 | 1460 |
| 2026 | 535 | 1215 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Medication that protects the intestinal microbiota and their preparation methods and applications6 Oct 2026US 12,751,921 B2University of Science and Technology of China
- Stable pharmaceutical compositions of edaravone and dextrocamphol6 Oct 2026US 12,751,941 B2Jiangsu Simcere Pharmaceutical Co., Ltd.
- Methods of treating influenza and poxvirus viral infections6 Oct 2026US 12,751,942 B2Veru Inc.
- Injectable formulations in a method for treating pain6 Oct 2026US 12,751,943 B2Pelthos Therapeutics Inc.
- Methods and compositions for treating fungal infections6 Oct 2026US 12,751,944 B2Neoculi Pty Ltd
- Hyaluronic acid hydrogels with agent to enhance resorption8 Oct 2026US 2026/0306398 A1Boston Scientific Scimed, Inc.
- Drug-polymer amorphous solid dispersions using linear polyacrylic acid polymers8 Oct 2026US 2026/0306410 A1Lubrizol Advanced Materials, Inc.
- Compositions, Kits, and Methods Comprising Bioidentical D BHB With Optional Vitamin B6 for Neurological Wellness, Mood Stability, and Medication Taper Support8 Oct 2026US 2026/0306430 A1Global Ketone Limited
- Trem2 agonists for the stimulation of microglia and methods of identification8 Oct 2026US 2026/0306439 A1The Translational Genomics Research Institute
- Use of small molecules to increase hypoxia inducible factor (hif) activity8 Oct 2026US 2026/0306440 A1Brown University
Most cited
By later US patents
- Methods for treating multiple myeloma with 3-(4-amino-1-oxo-1,3-dihydro-isoindol-2-yl)-piperidine-2,6-dione after stem cell transplantation733US 9,101,621 B2Celgene Corporation · 2015
- Pharmaceutical composition for the controlled release of moguisteine in a liquid suspension648US 5,674,533 ARecordati S.A., Chemical and Pharmaceutical Company · 1997
- Amphoteric compositions and polymeric forms of alpha hydroxyacids, and their therapeutic use354US 5,091,171 A1992
- Therapeutic system for administering clonidine transdermally335US 4,201,211 AAlza Corporation · 1980
- Sustained release, comfort formulation for glaucoma therapy329US 4,911,920 AAlcon Laboratories, Inc. · 1990