A61K 51/0453
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}
A61K51/0453 (Having five-membered rings with two or more ring hetero atoms, at least) appears on 204 US grants and 355 published applications in this corpus.
Search patents in A61K- Granted patents
- 204
- Published applications
- 355
- Assignees
- 171
- Inventors
- 785
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 2 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 2 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 2 | 0 |
| 1998 | 1 | 0 |
| 1999 | 2 | 0 |
| 2000 | 2 | 0 |
| 2001 | 1 | 2 |
| 2002 | 1 | 1 |
| 2003 | 1 | 3 |
| 2004 | 1 | 6 |
| 2005 | 3 | 6 |
| 2006 | 0 | 7 |
| 2007 | 2 | 5 |
| 2008 | 4 | 9 |
| 2009 | 2 | 8 |
| 2010 | 5 | 21 |
| 2011 | 3 | 16 |
| 2012 | 7 | 16 |
| 2013 | 16 | 25 |
| 2014 | 12 | 19 |
| 2015 | 13 | 23 |
| 2016 | 9 | 27 |
| 2017 | 17 | 14 |
| 2018 | 18 | 23 |
| 2019 | 15 | 21 |
| 2020 | 12 | 21 |
| 2021 | 19 | 14 |
| 2022 | 7 | 16 |
| 2023 | 5 | 10 |
| 2024 | 9 | 15 |
| 2025 | 1 | 16 |
| 2026 | 7 | 11 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Radioligands for pretargeted PET imaging and methods of their therapeutic use15 Sep 2026US 12,734,258 B2Memorial Sloan Kettering Cancer Center
- Markers, conjugates, compositions and methods for hypoxia imaging, mapping, and therapy14 Apr 2026US 12,600,742 B2WWIKY Biosciences Inc.
- PSMA imaging agents24 Mar 2026US 12,583,887 B2Siemens Medical Solutions USA, Inc.
- Carbonic anhydrase IX-targeting radioactive diagnostic and therapeutic medicament and method for preparing same3 Mar 2026US 12,564,650 B2Norroy Bioscience Co., Ltd.
- PSMA imaging agents24 Feb 2026US 12,559,521 B2Siemens Medical Solutions USA, Inc.
- Compounds useful for in vivo imaging of protein oxidation and/or cancer treatment1 Oct 2026US 2026/0295098 A1Wake Forest University Health Sciences
- Fluorinated mu-opioid receptor agonists10 Sep 2026US 2026/0265205 A1The United State of America, as represented by the Secretary, Department of Health and Human
- Targeting lysosomal lipid in alzheimer's disease3 Sep 2026US 2026/0256960 A1The University of North Carolina at Chapel Hill
- Epitope-Independent Pretargeted Therapy of Cancers Using Bacteria3 Sep 2026US 2026/0256964 A1University of Cincinnati
- Small molecule tracers binding to alpha-synuclein aggregates and their uses23 Jul 2026US 2026/0207795 A1Fudan University
Most cited
By later US patents
- Composition and method for tumor imaging123US 5,688,488 APurdue Research Foundation · 1997
- Androgenic directed compositions95US 5,656,651 ABiophysica, Inc. · 1997
- Non-steroidal radiolabeled agonist/antagonist compounds and their use in prostate cancer imaging74US 6,019,957 AThe University of Tennessee Research Corporation · 2000
- Tritium labelled N-mustard type compounds and a process for their production60US 4,795,627 AUniversity of Pittsburgh · 1989
- Amyloid plaque aggregation inhibitors and diagnostic imaging agents50US 6,696,039 B2The Trustees of the University of Pennsylvania · 2004