Method of producing microscopic particles made of hydrolytically decomposable polymers and containing active substances

US5424076A · kind A · utility

Assignee

• Schwarz Pharma Ltd. · DE

Inventors

• Elke Gorissen · Offenburg, DE
• Heike Biskup · Langenfeld, DE
• Hannelore Schneider · Düsseldorf, DE

Key dates

• Filing date: Jun 22, 1993
• Grant date: Jun 13, 1995
• Expiry date: Jun 22, 2013

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/2987
• WIPO field: Pharmaceuticals
• WIPO sector: Chemistry

Abstract

The invention concerns a method for the production of microscopic particles made of hydrolytically decomposable polymers, in particular copolymers, and containing active substances, using fluid gas with a uniform particle-size distribution and by the addition of biologically compatible amino acids. The microscopic particles produced by this method can be used as drugs for the treatment of humans or animals.