A61K 31/4427
Containing further heterocyclic ring systems
Official title: containing further heterocyclic ring systems
A61K31/4427 (Containing further heterocyclic ring systems) appears on 7,434 US grants and 13,710 published applications in this corpus.
Search patents in A61K- Granted patents
- 7,434
- Published applications
- 13,710
- Assignees
- 3,723
- Inventors
- 26,713
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 2 | 0 |
| 1995 | 8 | 0 |
| 1996 | 12 | 0 |
| 1997 | 39 | 0 |
| 1998 | 61 | 0 |
| 1999 | 71 | 0 |
| 2000 | 90 | 0 |
| 2001 | 136 | 45 |
| 2002 | 105 | 171 |
| 2003 | 93 | 232 |
| 2004 | 83 | 292 |
| 2005 | 77 | 277 |
| 2006 | 83 | 269 |
| 2007 | 71 | 236 |
| 2008 | 81 | 244 |
| 2009 | 77 | 282 |
| 2010 | 124 | 382 |
| 2011 | 138 | 388 |
| 2012 | 179 | 399 |
| 2013 | 305 | 585 |
| 2014 | 385 | 734 |
| 2015 | 505 | 762 |
| 2016 | 475 | 767 |
| 2017 | 588 | 764 |
| 2018 | 530 | 732 |
| 2019 | 543 | 744 |
| 2020 | 502 | 746 |
| 2021 | 418 | 734 |
| 2022 | 357 | 719 |
| 2023 | 331 | 724 |
| 2024 | 357 | 832 |
| 2025 | 335 | 892 |
| 2026 | 267 | 758 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- A61K 31/4439Containing a five-membered ring with nitrogen as a ring hetero atom4,928
- A61K 31/444Containing a six-membered ring with nitrogen as a ring heteroatom2,417
- A61K 31/4436Containing a heterocyclic ring having sulfur as a ring hetero atom468
- A61K 31/443Containing a five-membered ring with oxygen as a ring hetero atom460
- A61K 31/4433Containing a six-membered ring with oxygen as a ring hetero atom343
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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
- Liquid delivery compositions268US 5,780,044 AAtrix Laboratories, Inc. · 1998
- Liquid delivery compositions243US 5,744,153 AAtrix Laboratories, Inc. · 1998
- Albumin fusion proteins comprising GLP-1 polypeptides198US 7,141,547 B2Human Genome Sciences, Inc. · 2006
- Nitrogen-containing condensed cyclic compound having a pyrazolyl group as a substituent group and pharmaceutical composition thereof170US 7,074,801 B1Eisai Co., Ltd. · 2006