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. 11, 1992
Filed:
Sep. 20, 1990
Applicant:
Inventors:
Toshiyuki Niwa, Gifu, JP;
Yoshiaki Kawashima, Gifu, JP;
Hirofumi Takeuchi, Gifu, JP;
Yoji Ito, Toki, JP;
Assignees:
Showa Yakuhin Kako Co. Ltd., , JP;
Yoshiaki Kawashima, , JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A61K / ;
U.S. Cl.
CPC ...
424497 ; 424408 ; 424451 ; 424468 ; 424470 ; 424484 ; 424489 ;
Abstract
A granular medicine with slow drug-release characteristics that is sufficiently absorbed in the intestines, in which the granular medicine has a hollow spherical structure, a drug is dispersed in the shell, which mainly consists of an enteron-soluble polymer. The method for preparing the medicine includes the steps of: (a) mixing a hydrophilic or hydrophobic drug with an enteron-soluble polymer in a mixture of an aliphatic alcohol and a chlorohydrocarbon; and (b) pouring this mixture into water or an aqueous medium, and stirring the solution to precipitate the medicine.