Powders for inhalation

US5478578A · kind A · utility

Assignee

• Boehringer Ingelheim GmbH · DE

Inventors

• Klaus Arnold · Mandelbachtal, DE
• Peter Grass · Ingelheim am Rhein, DE
• Adolf Knecht · Mainz, DE
• Robert Roos · Bussum, NL
• Gerhard Sluke · Ingelheim am Rhein, DE
• Herbet Thieme · Ingelheim am Rhein, DE
• Joachim Wenzel · Ingelheim am Rhein, DE

Key dates

• Filing date: Aug 15, 1994
• Grant date: Dec 26, 1995
• Expiry date: Aug 15, 2014

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61K9/0075
• WIPO field: Pharmaceuticals
• WIPO sector: Chemistry

Abstract

In order to control and optimize the amount of inhalable active substance released when drugs are administered as inhalation powders, the invention calls for the use of auxiliaries consisting of mixtures of coarser particles (average particle size>20 .mu.m) and finer particles (average particle size<10 .mu.m).