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:
Nov. 20, 1984
Filed:
Feb. 07, 1983
Ono Pharmaceutical Co., Ltd., Kyoto, JP;
Abstract
The present invention provides new three-layered pharmaceutical film preparations which comprise one drug-storing middle layer composed of one or more (a) polyvinylpyrrolidone, (b) hydroxypropyl cellulose, (c) plasticizers and (d) organic acids, containing prostaglandin analogues, and two release-controlling layers on both sides of the said middle layer, composed of one or more (a) hydroxypropyl cellulose and (b) plasticizers, containing or not containing prostaglandin analogues, and which may release the drug at the desired concentration lastingly for an extended period of time, with great high biological availability, and can make this release 'zero-order release', and further have improved the stability of the drug contained therein, and in which the form of the preparation is not retained at the administered site after administration.