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:
Apr. 27, 2021
Filed:
Dec. 08, 2017
Jfe Mineral Company, Ltd., Tokyo, JP;
Yuko Echizenya, Tokyo, JP;
Yoshimi Nakata, Tokyo, JP;
Etsurou Udagawa, Tokyo, JP;
Osamu Yamamoto, Yamagata, JP;
JFE MINERAL COMPANY, LTD., Tokyo, JP;
Abstract
An inorganic composition that is useful as an active ingredient for pharmaceuticals and has excellent stability comprises hydrozincite-containing zinc carbonate hydroxide hydrate produced by drying a precipitate. The precipitate is obtained by adding aqueous zinc nitrate solution, aqueous zinc sulfate solution or aqueous zinc chloride solution and aqueous sodium hydroxide solution dropwise to aqueous sodium hydrogen carbonate solution, a pH of the aqueous sodium hydrogen carbonate solution being maintained within a range of 6.5 to 9 by means of a pH controller. The hydrozincite-containing zinc carbonate hydroxide hydrate has an amount of dissolved Znions of not less than 0.1 μg/mbut not more than 7.33 μg/mand pH of not less than 7.2 and less than 8.3 after a dissolution test using stirring method.