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. 12, 1998
Filed:
Aug. 15, 1995
Shin-Etsu Chemical Co., Ltd., , JP;
Abstract
A cellulosic enteric base is dissolved in an organic solvent capable of being admixed with water in any rate or a mixed solvent of the organic solvent and water to give a polymer solution, followed by mixing the polymer solution with water, then removing the organic solvent to give a concentrate; adding an anionic surfactant to the concentrate and then drying to give polymer powder. The polymer powder is introduced into water to give an emulsion containing polymer particles having an average particle size of not more than 1 .mu.m and the emulsion is dispersed in water containing a plasticizer to give a coating liquid. A drug is coated with the coating liquid to give a solid enteric pharmaceutical preparation.