A61K 31/558
Having heterocyclic rings containing oxygen as the only ring hetero atom
Official title: having heterocyclic rings containing oxygen as the only ring hetero atom, e.g. thromboxanes
A61K31/558 (Having heterocyclic rings containing oxygen as the only ring hetero atom) appears on 218 US grants and 266 published applications in this corpus.
Search patents in A61K- Granted patents
- 218
- Published applications
- 266
- Assignees
- 112
- Inventors
- 392
- Latest grant
- 7 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 2 | 0 |
| 1995 | 3 | 0 |
| 1996 | 9 | 0 |
| 1997 | 8 | 0 |
| 1998 | 6 | 0 |
| 1999 | 7 | 0 |
| 2000 | 11 | 0 |
| 2001 | 14 | 7 |
| 2002 | 13 | 14 |
| 2003 | 7 | 11 |
| 2004 | 6 | 10 |
| 2005 | 2 | 7 |
| 2006 | 3 | 7 |
| 2007 | 1 | 6 |
| 2008 | 3 | 4 |
| 2009 | 0 | 9 |
| 2010 | 2 | 5 |
| 2011 | 7 | 10 |
| 2012 | 7 | 9 |
| 2013 | 8 | 14 |
| 2014 | 8 | 16 |
| 2015 | 11 | 13 |
| 2016 | 11 | 16 |
| 2017 | 6 | 10 |
| 2018 | 13 | 10 |
| 2019 | 8 | 13 |
| 2020 | 6 | 14 |
| 2021 | 4 | 14 |
| 2022 | 4 | 9 |
| 2023 | 6 | 10 |
| 2024 | 7 | 12 |
| 2025 | 7 | 5 |
| 2026 | 5 | 11 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Biodegradable drug-polymer conjugate7 Jul 2026US 12,673,064 B2Polyactiva Pty Ltd
- Pharmaceutical use14 Apr 2026US 12,599,612 B2Lucolas-M.D. Ltd.
- Compositions and methods for hair follicle regeneration24 Mar 2026US 12,582,649 B2Washington University
- Disease-site-specific liposomal formulation10 Mar 2026US 12,569,437 B2Cuorips Inc.
- Liposome compositions comprising weak acid drugs and uses thereof17 Feb 2026US 12,551,437 B2Pharmosa Biopharm Inc.
- Combination therapy for pulmonary hypertension8 Oct 2026US 2026/0306461 A1Vivus, Inc.
- Improving glymphatic-lymphatic efflux13 Aug 2026US 2026/0232693 A1University of Rochester
- Composition for ophthalmic use containing sepetaprost2 Jul 2026US 2026/0183309 A1Ono Pharmaceutical Co., Ltd.
- Polyunsaturated fatty acid-bound alpha fetoprotein promotes immune suppression by altering human dendritic cell metabolism18 Jun 2026US 2026/0166115 A1Parker Institute for Cancer Immunotherapy
- Liposome compositions comprising weak acid drugs and uses thereof28 May 2026US 2026/0144751 A1Pharmosa Biopharm Inc.
Most cited
By later US patents
- Treatment of female sexual dysfunction239US 5,877,216 AVivus, Inc. · 1999
- Treatment of female sexual dysfunction233US 6,294,550 B1Asivi, LLC · 2001
- Treatment of female sexual dysfunction212US 6,306,841 B1Asivi, LLC · 2001
- Non-acidic cyclopentane heptanoic acid,2-cycloalkyl or arylalkyl derivatives as therapeutic agents177US 6,403,649 B1Allergan Sales, Inc. · 2002
- Treatment of female sexual dysfunction using phosphodiesterase inhibitors112US 6,469,016 B1Vivus, Inc. · 2002