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. 18, 1992
Filed:
Mar. 29, 1989
Applicant:
Inventors:
Toshiaki Shioya, Oume, JP;
Ryogo Hirano, Kawagoe, JP;
Assignee:
Snow Brand Milk Products Co., Ltd., Hokkaido, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A61K / ; A61K / ;
U.S. Cl.
CPC ...
424493 ; 424494 ; 514777 ; 514779 ; 514781 ; 514963 ;
Abstract
The present invention relates to a process for producing a microcapsule comprising a permeability-controllable membrane. This process comprises adjusting the ionic strength of a solution of a soluble chitin derivative, and then bringing this solution into contact with a solution of a polyanionic polysaccharide, its salt or a mixture thereof.