Patent · US Active

Process for preparing nanoparticles in the form of a powder comprising a bio-resorbable polyester

US11964058B2 · kind B2 · utility

0Cited by

0References

21Claims

0Family size

Assignee

Evonik Corporation · US

Inventors

David Fecher · Neuhaus, DE
Maria Camilla Operti · Darmstadt, DE
Rima Jaber · Frankfurt, DE
Andrea Engel · Birmingham, US
Silko Grimm · Roßdorf, DE
Min Yang · Daejeon, KR

Key dates

Filing date	Sep 25, 2020
Grant date	Apr 23, 2024
Priority date	—
Expiry date	Sep 25, 2040

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08J2467/04
WIPO fieldPharmaceuticals
WIPO sectorChemistry

Abstract

A process can be used for preparing nanoparticles containing at least one bio-resorbable polyester. The nanoparticles are in the form of a powder with a Z-Average particle size Dz in the range of 1 to 450 nm, and with a polydispersity index PDI in the range of 0.01 to 0.5. The process involves emulsion-solvent extraction or emulsion-solvent evaporation, and application of ultrasonic sound.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.