Transdermal therapeutic systems that contain sex steroids and dimethyl isosorbide

US5904931A · kind A · utility

Assignee

• SCHERING CORPORATION · US

Inventors

• Ralph Lipp · Berlin, DE
• Clemens Gunther · Waldkirch, DE
• Jutta Riedl · Berlin, DE
• Ulrich Tauber · Berlin, DE

Key dates

• Filing date: Nov 8, 1996
• Grant date: May 18, 1999
• Expiry date: Nov 8, 2016

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61P43/00
• WIPO field: Pharmaceuticals
• WIPO sector: Chemistry

Abstract

Transdermal therapeutic systems that contain sex steroids and optionally penetration-enhancers and crystallization inhibitors are described, which are characterized in that they contain dimethyl isosorbide, with the exception of systems that contain active ingredient-containing, non-free-flowing gel phases or 3-keto-desogestrel.