A61K 49/227
Liposomes, lipoprotein vesicles
Official title: {Liposomes, lipoprotein vesicles, e.g. LDL or HDL lipoproteins, micelles, e.g. phospholipidic or polymeric}
A61K49/227 (Liposomes, lipoprotein vesicles) appears on 197 US grants and 171 published applications in this corpus.
Search patents in A61K- Granted patents
- 197
- Published applications
- 171
- Assignees
- 93
- Inventors
- 317
- Latest grant
- 21 Apr 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 2 | 0 |
| 1993 | 6 | 0 |
| 1994 | 5 | 0 |
| 1995 | 3 | 0 |
| 1996 | 7 | 0 |
| 1997 | 10 | 0 |
| 1998 | 12 | 0 |
| 1999 | 6 | 0 |
| 2000 | 11 | 0 |
| 2001 | 12 | 7 |
| 2002 | 7 | 9 |
| 2003 | 9 | 11 |
| 2004 | 4 | 7 |
| 2005 | 5 | 12 |
| 2006 | 8 | 3 |
| 2007 | 1 | 2 |
| 2008 | 5 | 6 |
| 2009 | 3 | 3 |
| 2010 | 3 | 2 |
| 2011 | 5 | 6 |
| 2012 | 1 | 8 |
| 2013 | 3 | 8 |
| 2014 | 9 | 7 |
| 2015 | 3 | 10 |
| 2016 | 8 | 6 |
| 2017 | 7 | 5 |
| 2018 | 2 | 12 |
| 2019 | 7 | 11 |
| 2020 | 6 | 11 |
| 2021 | 3 | 5 |
| 2022 | 9 | 6 |
| 2023 | 3 | 6 |
| 2024 | 6 | 4 |
| 2025 | 2 | 3 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Nanodroplet with layer-by-layer assembly21 Apr 2026US 12,605,470 B2Arizona Board of Regents on Behalf of the University of Arizona
- Fluorescent compound comprising a fluorophore conjugated to a pH-triggered polypeptide6 May 2025US 12,290,575 B2University of Rhode Island Board of Trustees
- Method of freeze drying surfactant-stabilized microbubbles6 May 2025US 12,290,577 B2Drexel University
- Methods for making ultrasound contrast agents10 Dec 2024US 12,161,730 B2Lantheus Medical Imaging, Inc.
- Methods and devices for preparation of ultrasound contrast agents24 Sep 2024US 12,097,270 B2Lantheus Medical Imaging, Inc.
- Freeze-dried nanodroplets with fluorinated compound26 Feb 2026US 2026/0053957 A1Bracco Suisse SA
- Methods for making ultrasound contrast agents22 May 2025US 2025/0161499 A1Lantheus Medical Imaging, Inc.
- Surface modification of micro-bubbles and nanoparticles based on poly(alkylcyanoacrylate)15 May 2025US 2025/0152756 A1Rheinisch-Westfälische Technische Hochschule (RWTH) Aachen
- Methods and devices for preparation of ultrasound contrast agents17 Apr 2025US 2025/0121101 A1Lantheus Medical Imaging, Inc.
- Irradiation amenable liposomal dye aggregates and methods of synthesis and use thereof21 Nov 2024US 2024/0382626 A1Board of Regents, The University of Texas System
Most cited
By later US patents
- Therapeutic drug delivery systems498US 5,580,575 AImaRx Pharmaceutical Corp. · 1996
- Gas and gaseous precursor filled microspheres as topical and subcutaneous delivery vehicles426US 5,733,572 AImaRx Pharmaceutical Corp. · 1998
- Therapeutic delivery systems related applications384US 5,542,935 AImaR.sub.x Pharmaceutical Corp. · 1996
- Methods of preparing gas-filled liposomes362US 5,469,854 AImaR.sub.x Pharmaceutical Corp. · 1995
- Lipisomes containing gas for ultrasound detection350US 4,900,540 ATrustees of the University of Massachusetts · 1990