Betulin-containing birch bark extracts and their formulation

US11266660B2 · kind B2 · utility

Assignee

• Amryt Research Limited · IE

Inventors

• John Watson · Edgewood, US
• Sebastian Jäger · Wiernsheim, DE
• Tobias Zahn · Pforzheim, DE

Key dates

• Filing date: Aug 3, 2021
• Grant date: Mar 8, 2022
• Expiry date: Aug 3, 2041

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61L2300/30
• WIPO field: Pharmaceuticals
• WIPO sector: Chemistry

Abstract

The present disclosure relates to birch bark extracts, methods of producing such extracts, stable pharmaceutical compositions containing such extracts and methods of using of such extracts. The birch bark extracts of the present disclosure contain triterpenes, which are known to improve wound healing.