Microparticles containing active ingredients, agents containing these microparticles, their use for ultrasound-controlled release of active ingredients, as well as a process for their production

US6068857A · kind A · utility

Assignee

• SCHERING CORPORATION · US

Inventors

• Werner Weitschies · Neuenkirchen, DE
• Dieter Heldmann · Munich, DE
• Peter Hauff · Berlin, DE
• Thomas Fritzsch · Berlin, DE
• Harald Stahl · Berlin, DE

Key dates

• Filing date: Aug 5, 1996
• Grant date: May 30, 2000
• Expiry date: Aug 5, 2016

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S977/929
• WIPO field: Pharmaceuticals
• WIPO sector: Chemistry

Abstract

The invention relates to new microparticles containing active ingredients, which contain at least one gas or a gaseous phase in addition to the active ingredient(s), agents containing these particles (microparticulate systems), their use for ultrasound-controlled in vivo release of active ingredients, as well as a process for the production of particles and agents.