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

Patent 5730999 Issued on March 24, 1998. Estimated Expiration Date:

May 17, 2016. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Abstract Claims Description Full Text

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Inventors

Application

No. 650025 filed on 05/17/1996

US Classes:

424/443, Web, sheet or filament bases; compositions of bandages; or dressings with incorporated medicaments424/449Transdermal or percutaneous

Examiners

Primary: Kulkosky, Peter F.

Attorney, Agent or Firm

Oblon, Spivak, McClelland, Maier & Neustadt, P.C.

Foreign Patent References

0 315 218 EP. 05/12/1989
0 394 956 EP. 10/12/1990
415 055 EP. 03/12/1991
32 08 853 DE. 09/12/1982
856 501 GB. 12/12/1960
1 462 356 GB. 01/12/1977

International Class

A61K 009/70

Foreign Application Priority Data

1993-03-27 DE

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.