The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 24, 2015
Filed:
May. 02, 2006
Thomas Langguth, Jena, DE;
Stefan Bracht, Glienicke Nordbahn, DE;
Thomas Langguth, Jena, DE;
Stefan Bracht, Glienicke Nordbahn, DE;
Bayer Intellectual Property GmbH, Berlin, DE;
Abstract
The UV-stable solid transdermal therapeutic system (TTS) with UV absorber for photosensitive active pharmaceutical ingredients has a backing layer (), at least one active ingredient-containing matrix (), and a detachable protective film (). Optionally an adhesive layer () and a separating layer () are introduced between the backing layer () and the at least one active ingredient-containing matrix (). At least one hydroxyphenyltriazine compound acting as UV absorber is embedded in the backing layer (), in the active ingredient-containing matrix (), or in the adhesive layer (). The TTS according to the invention achieves high stability at low concentrations of UV absorber, preferably 0.5 to 3% (m/m), so as to reduce or avoid skin irritation.