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:
Jul. 30, 1991
Filed:
Apr. 04, 1989
Applicant:
Inventors:
Yasuharu Saeki, Tsukuba, JP;
Noritoshi Koyama, Ibaraki, JP;
Sumio Watanabe, Aichi, JP;
Shigeru Aoki, Gifu, JP;
Assignee:
Eisai Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A61K / ;
U.S. Cl.
CPC ...
424480 ; 424465 ; 424482 ; 427-3 ;
Abstract
A peroral preparation of an acid-unstable compound comprises (1) a core containing the acid-unstable compound, (2) a first layer, coated on the core, comprising a hardly water-soluble, film-forming material and fine particles of a hardly water-soluble substance, suspended in the material, and (3) a second layer, coated on the first layer, of enteric film. The acid-unstable compound is a benzimidazole compound.