Patent · US Active

Sterilization of biodegradable hydrogels

US9278139B2 · kind B2 · utility

5Cited by

1References

17Claims

0Family size

Assignee

ASCENDIS PHARMA A/S · DK

Inventors

Harald Rau · Würzburg, DE
Tobias Voigt · Heidelberg, DE
Ulrich Hersel · Heidelberg, DE

Key dates

Filing date	Jan 26, 2015
Grant date	Mar 8, 2016
Priority date	—
Expiry date	Jan 26, 2035

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08L2203/02
WIPO fieldPharmaceuticals
WIPO sectorChemistry

Abstract

The present invention relates to a terminal sterilization process for biodegradable PEG-based insoluble hydrogels using irradiation. The presence of a protective solvent ensures that the hydrogel remains intact with functionally preserved three-dimensional and physicochemical properties.

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