Patent · US Expired

Dermal therapeutic system made of a meltable poly (meth) acrylate

US5730999A · kind A · utility

74Cited by

10References

10Claims

0Family size

Assignee

Roehm GmbH Chemische Fabrik · DE

Inventors

Klaus Lehmann · Roßdorf, DE
Hans-Ulrich Petereit · Darmstadt, DE
Manfred Assmus · Emmelshausen, DE

Key dates

Filing date	May 17, 1996
Grant date	Mar 24, 1998
Priority date	—
Expiry date	May 17, 2016

Classification

Technology area (CPC A)Human Necessities
CPC primaryA61L2300/602
WIPO fieldPharmaceuticals
WIPO sectorChemistry

Abstract

A dermal therapeutic system which exhibits a prolonged release of a drug comprising at least one pharmaceutical agent combined with poly(meth)acrylates in the form of at least one layer of the therapeutic system, the poly(meth)acrylates being a mixture, which is produced from a melt, comprising (1) at least one (meth)acrylic polymer containing functional groups and (2) at least one (meth)acrylic polymer which regulates the flow behavior of the poly(meth)acrylate mixture and which contains no functional groups or only insignificant amounts of functional groups.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.