A61K 47/541
Organic ions forming an ion pair complex with the pharmacologically or therapeutically
Official title: {Organic ions forming an ion pair complex with the pharmacologically or therapeutically active agent}
A61K47/541 (Organic ions forming an ion pair complex with the pharmacologically or therapeutically) appears on 122 US grants and 195 published applications in this corpus.
Search patents in A61K- Granted patents
- 122
- Published applications
- 195
- Assignees
- 140
- Inventors
- 441
- Latest grant
- 10 Feb 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1985 | 1 | 0 |
| 1986 | 2 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 2 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 3 | 0 |
| 1997 | 3 | 0 |
| 1998 | 3 | 0 |
| 1999 | 6 | 0 |
| 2000 | 2 | 0 |
| 2001 | 1 | 2 |
| 2002 | 3 | 4 |
| 2003 | 4 | 8 |
| 2004 | 2 | 2 |
| 2005 | 5 | 13 |
| 2006 | 2 | 5 |
| 2007 | 0 | 3 |
| 2008 | 1 | 2 |
| 2009 | 0 | 2 |
| 2010 | 1 | 3 |
| 2011 | 2 | 3 |
| 2012 | 3 | 6 |
| 2013 | 2 | 8 |
| 2014 | 4 | 8 |
| 2015 | 2 | 5 |
| 2016 | 6 | 11 |
| 2017 | 7 | 13 |
| 2018 | 5 | 11 |
| 2019 | 7 | 9 |
| 2020 | 3 | 9 |
| 2021 | 8 | 9 |
| 2022 | 5 | 11 |
| 2023 | 4 | 6 |
| 2024 | 6 | 17 |
| 2025 | 12 | 12 |
| 2026 | 2 | 13 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Self-assembled complex containing copper ions10 Feb 2026US 12,544,457 B2Korea University Research and Business Foundation
- Cationic lipid compositions for tissue-specific delivery13 Jan 2026US 12,521,447 B2Life Technologies Corporation
- Intravitreal corticosteroid extended release implant and methods of use7 Oct 2025US 12,433,900 B2Eyedea Bio, LLC
- Hydrophobic ion pairing and flash nanoprecipitation for formation of controlled-release nanocarrier formulations15 Jul 2025US 12,357,582 B2The Trustees of Princeton University
- Compositions comprising pharmaceutically acceptable salts of glucagon-like peptide-1 analogs and pharmaceutically acceptable salts of amylin analogs, and uses thereof8 Jul 2025US 12,350,320 B2I2O Therapeutics, Inc.
- Circular rna compositions and methods of use thereof for targeted delivery27 Aug 2026US 2026/0250349 A1
- Methods and related aspects for characterizing labeled nanoparticles27 Aug 2026US 2026/0251550 A1The Johns Hopkins University
- In vivo t cell gene editing6 Aug 2026US 2026/0226167 A1Genzyme Corporation
- Composition containing anionic long-chain lipid to be used for attenuating skin barrier function, and dispersion containing complex comprising cationic long-chain lipid, anionic long-chain lipid and drug dispersed therein9 Jul 2026US 2026/0191969 A1Kyushu University, National University Corporation
- Ionizable cationic lipids and lipid nanoparticles, and methods of synthesis and use thereof2 Jul 2026US 2026/0183418 A1Genzyme Corporation
Most cited
By later US patents
- Compositions and methods for enhanced drug delivery256US 5,607,691 AAffymax Technologies N.V. · 1997
- Compositions for oral delivery of active agents159US 5,650,386 AEmisphere Technologies, Inc. · 1997
- Sustained-release composition including amorphous polymer154US 6,613,358 B22003
- Pharmaceutical vehicles for exhancing penetration and retention in the skin149US 4,895,727 AChemex Pharmaceuticals, Inc. · 1990
- Permeability enhancers for negatively charged polynucleotides127US 5,583,020 ARibozyme Pharmaceuticals, Inc. · 1996