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:
May. 09, 1995
Filed:
Dec. 22, 1992
Sekisui Chemical Co., Ltd., Osaka, JP;
Abstract
The present invention provides a pharmaceutical preparation for percutaneous absorption comprising a drug-impermeable substrate having provided thereon an adhesive layer comprising a drug and a drug dissolution aid, characterized in that said adhesive is composed of a copolymer essentially consisting of 5 to 35 wt % of N-vinyl-2-pyrrolidone and 65 to 95 wt % of an acrylic acid ester, 3 to 30 wt % of a homopolymer of N-vinyl-2-pyrrolidone is contained in said adhesive layer as the drug dissolution aid, and said drug is a hydrophilic drug having a saturation solubility of 6 to 50 wt % to N-vinyl-2-pyrrolidone. Where the hydrophilic drug is Piroxicam, it is preferred to use a polyoxyethylene alkyl ether and/or a fatty acid alkylolamide as an absorption enhancer in combination.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile