A61K 31/56
Compounds containing cyclopenta[a]hydrophenanthrene ring systems
Official title: Compounds containing cyclopenta[a]hydrophenanthrene ring systems; Derivatives thereof, e.g. steroids
A61K31/56 (Compounds containing cyclopenta[a]hydrophenanthrene ring systems) appears on 9,399 US grants and 17,232 published applications in this corpus.
Search patents in A61K- Granted patents
- 9,399
- Published applications
- 17,232
- Assignees
- 5,230
- Inventors
- 23,537
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 25 | 0 |
| 1977 | 27 | 0 |
| 1978 | 24 | 0 |
| 1979 | 19 | 0 |
| 1980 | 19 | 0 |
| 1981 | 25 | 0 |
| 1982 | 22 | 0 |
| 1983 | 16 | 0 |
| 1984 | 18 | 0 |
| 1985 | 23 | 0 |
| 1986 | 24 | 0 |
| 1987 | 21 | 0 |
| 1988 | 25 | 0 |
| 1989 | 56 | 0 |
| 1990 | 60 | 0 |
| 1991 | 43 | 0 |
| 1992 | 48 | 0 |
| 1993 | 59 | 0 |
| 1994 | 52 | 0 |
| 1995 | 65 | 0 |
| 1996 | 116 | 0 |
| 1997 | 126 | 0 |
| 1998 | 160 | 0 |
| 1999 | 182 | 0 |
| 2000 | 143 | 0 |
| 2001 | 163 | 73 |
| 2002 | 172 | 298 |
| 2003 | 167 | 473 |
| 2004 | 99 | 535 |
| 2005 | 99 | 522 |
| 2006 | 118 | 555 |
| 2007 | 111 | 526 |
| 2008 | 98 | 518 |
| 2009 | 113 | 516 |
| 2010 | 183 | 546 |
| 2011 | 216 | 566 |
| 2012 | 274 | 602 |
| 2013 | 312 | 639 |
| 2014 | 439 | 823 |
| 2015 | 437 | 823 |
| 2016 | 448 | 851 |
| 2017 | 534 | 904 |
| 2018 | 493 | 845 |
| 2019 | 533 | 907 |
| 2020 | 569 | 929 |
| 2021 | 485 | 910 |
| 2022 | 456 | 873 |
| 2023 | 404 | 898 |
| 2024 | 400 | 812 |
| 2025 | 438 | 712 |
| 2026 | 240 | 576 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Nanostructure or microstructure and method for producing same6 Oct 2026US 12,751,923 B2The University of Tokyo
- Compositions and methods of treating lupus nephritis6 Oct 2026US 12,752,005 B2Genentech, Inc.
- Methods of treating fibrotic liver diseases or conditions with indeglitazar29 Sep 2026US 12,746,225 B2Pleiogenix Inc.
- Compositions and methods comprising endothelin a receptor antagonists and androgen therapies29 Sep 2026US 12,746,239 B2The United States Government as represented by the Department of Veterans Affairs
- Method of treating SCLC and managing neutropenia29 Sep 2026US 12,746,240 B2Pharma Mar, S. A.
- Composition for removing and inhibiting senescent cells, and uses thereof8 Oct 2026US 2026/0306460 A1Lifeceutix Co., Ltd.
- Prolyl hydroxylase domain-containing protein (phd) inhibitors, combinations and uses thereof8 Oct 2026US 2026/0306471 A1Insilico Medicine IP Limited
- Inhaled statins as bronchodilators to improve lung function in respiratory diseases8 Oct 2026US 2026/0306477 A1Beth Israel Deaconess Medical Center, Inc.
- Compositions and methods for the treatment of congenital adrenal hyperplasia8 Oct 2026US 2026/0306485 A1Crinetics Pharmaceuticals, Inc.
- Combination of capivasertib, a cdk4/6 inhibitor and fulvestrant for use in the treatment of breast cancer8 Oct 2026US 2026/0306495 A1
Most cited
By later US patents
- Wound dressing with conformable elastomeric wound contact layer1,263US 5,445,604 ASmith and Nephew Associated Companies Limited · 1995
- Method of treating androgen independent prostate cancer1,091US 9,040,574 B2Natrogen Therapeutics International, Inc. · 2015
- Anti-angiogenic compositions and methods of use968US 5,716,981 AAngiogenesis Technologies, Inc. · 1998
- Solid carriers for improved delivery of active ingredients in pharmaceutical compositions930US 6,248,363 B1Lipocine Inc. · 2001
- 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