Controlled release formulation

US5591452A · kind A · utility

Assignee

• Euro-Celtique S.A. · LU

Inventors

• Ronald Brown Miller · Basel, CH
• Stewart T. Leslie · Cambridge, GB
• Sandra Therese Antoinette Malkowska · Cambridge, GB
• Kevin John Smith · Cambridge, GB
• Walter Wimmer · Limburg, DE
• Horst Winkler · Linter, DE
• Udo Hahn · Nentershausen, DE
• Derek Allan Prater · Westfield, GB

Key dates

• Filing date: May 10, 1994
• Grant date: Jan 7, 1997
• Expiry date: May 10, 2014

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61P29/02
• WIPO field: Pharmaceuticals
• WIPO sector: Chemistry

Abstract

A controlled release preparation for oral administration contains tramadol, or a pharmaceutically acceptable salt thereof, as active ingredient.