A61K 49/1812
Liposomes, polymersomes
Official title: {liposomes, polymersomes, e.g. immunoliposomes}
A61K49/1812 (Liposomes, polymersomes) appears on 135 US grants and 174 published applications in this corpus.
Search patents in A61K- Granted patents
- 135
- Published applications
- 174
- Assignees
- 119
- Inventors
- 421
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 2 | 0 |
| 1991 | 1 | 0 |
| 1992 | 4 | 0 |
| 1993 | 3 | 0 |
| 1994 | 5 | 0 |
| 1995 | 9 | 0 |
| 1996 | 5 | 0 |
| 1997 | 7 | 0 |
| 1998 | 4 | 0 |
| 1999 | 3 | 0 |
| 2000 | 5 | 0 |
| 2001 | 4 | 0 |
| 2002 | 5 | 5 |
| 2003 | 2 | 6 |
| 2004 | 1 | 4 |
| 2005 | 0 | 6 |
| 2006 | 0 | 3 |
| 2007 | 2 | 17 |
| 2008 | 0 | 5 |
| 2009 | 0 | 4 |
| 2010 | 4 | 9 |
| 2011 | 6 | 14 |
| 2012 | 3 | 8 |
| 2013 | 5 | 6 |
| 2014 | 6 | 13 |
| 2015 | 6 | 10 |
| 2016 | 4 | 5 |
| 2017 | 8 | 6 |
| 2018 | 5 | 6 |
| 2019 | 1 | 9 |
| 2020 | 4 | 6 |
| 2021 | 5 | 11 |
| 2022 | 5 | 8 |
| 2023 | 2 | 4 |
| 2024 | 1 | 3 |
| 2025 | 1 | 6 |
| 2026 | 3 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- MRI contrast agent for use in the diagnosis of early changes in the endothelium of blood vessels15 Sep 2026US 12,734,256 B2Lipid Systems Sp. Z O.O.
- Liposomal nanocarrier delivery system for targeting active CD44 molecule, preparation method therefor, and uses thereof2 Jun 2026US 12,642,875 B2Beijing Inno Medicine Co., Ltd.
- Nanocarrier systems for imaging and delivery of active agents6 Jan 2026US 12,514,935 B2Kansas State University Research Foundation
- Multiple CEST contrast imaging of nose-to-brain drug delivery using CT-contrast agent-loaded liposomes13 May 2025US 12,295,699 B2City University of Hong Kong
- Dual mode gadolinium nanoparticle contrast agents24 Sep 2024US 12,097,269 B2
- Mapping glutathione deficiency and/or dysfunction of mitochondria4 Dec 2025US 2025/0371713 A1
- Systems and methods for monitoring of delivery of label-free drugs18 Sep 2025US 2025/0288206 A1City University of Hong Kong
- Targeted contrast agents for mri of amyloid deposition11 Sep 2025US 2025/0281652 A1Texas Children’s Hospital
- Liposomal nanocarrier delivery system for targeting active cd44 molecule, preparation method therefor, and uses thereof29 May 2025US 2025/0170279 A1Beijing Inno Medicine Co., Ltd.
- Liposomal nanocarrier delivery system for targeting active cd44 molecule, preparation method therefor, and uses thereof29 May 2025US 2025/0170280 A1Beijing Inno Medicine Co., Ltd.
Most cited
By later US patents
- Masking of liposomes from RES recognition611US 4,501,728 ATechnology Unlimited, Inc. · 1985
- Diagnostic media413US 4,647,447 ASchering Corporation · 1987
- Method of enhancing NMR imaging using chelated paramagnetic ions bound to biomolecules213US 5,021,236 ASchering Corporation · 1991
- Delivery vehicles with amphiphile-associated active ingredient130US 5,320,906 AVestar, Inc. · 1994
- Contrast agents for NMR imaging128US 4,728,575 AVestar, Inc. · 1988