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:
Mar. 01, 1994
Filed:
Oct. 19, 1992
Unitika Ltd., Hyogo, JP;
Abstract
A shaped chitin body containing a high content of a physiologically active substance, such as a drug to be used for the cure or prevention of disease, is prepared by incorporating said physiologically active substance into a dope comprising (a) a water-insoluble chitin, (b) lithium chloride, and (c) N-methylpyrrolidone and/or dimethylacetamide, with the amount of said physiologically active substance incorporated being 0.5 wt. % or more with respect to the amount of the chitin contained in said dope, and thereafter coagulating the resulting mixture with a coagulant to obtain a shaped body. The high content of the physiologically active substance thus incorporated in the shaped chitin can be slowly released therefrom over a long period of time. The shaped-chitin of the present invention is characterized by long duration of the physiological activity of the active substance contained therein.