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.

Date of Patent:
Aug. 04, 1998

Filed:

Sep. 14, 1992
Applicant:
Inventors:

Yie W Chien, North Brunswick, NJ (US);

Guo-Shen Chen, Zheijiung, CN;

Te-Yen Chien, Branchburg, NJ (US);

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A61F / ;
U.S. Cl.
CPC ...
424449 ; 424448 ;
Abstract

Transdermal polymer dosage units are provided which comprise a backing layer and a reservoir layer. The reservoir layer can have multiple regions which contact the skin during use, optionally may have different pharmaceuticals, may provide variable rate of transdermal absorption, and may provide the pharmaceuticals in the form of microreservoirs or one or more macroreservoirs. The reservoir region can comprise a macroreservoir of one or more pharmaceuticals wherein the reservoir is bounded by a backing layer and a layer of a substantially non-porous permeability-regulating polymer membrane which directly or indirectly contacts the skin during transdermal administration. Also, provided is a process of transdermal administration of pharmaceuticals using the novel dosage units.


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Chien, Yie. (1998). Transdermal controlled delivery of pharmaceuticals at variable dosage (U.S. Patent No. 5788983). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5788983

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