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:
Jun. 19, 2001
Filed:
Mar. 26, 1998
Shigeru Tominaga, Saitama-ken, JP;
Toshio Takizawa, Saitama-ken, JP;
Masahiko Yamada, Saitama-ken, JP;
Meiji Seika Kaisha, Ltd., Tokyo-to, JP;
Abstract
A process for delivering the orally administered active ingredients which are safe even in their successive administrations for a long period to the large intestine without elution of the ingredients before reaching the large intestine is disclosed. The process according to the present invention comprises a step of administering orally to animals including human a composite comprising a core containing the active ingredients, an internal layer comprising chitosan with which the core is coated, and an external layer comprising a gastric acid resistant material with which the internal layer is coated, wherein all of the materials in the composite have the empirically established safety to humans. When a material having an iron cation scavenging ability, particularly phytin is used as the active ingredient, it is possible to treat colon cancer efficiently by the process according to the present invention.