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:
Aug. 15, 1989
Filed:
Mar. 10, 1988
Applicant:
Inventors:
Yoshio Ota, Ogaki, JP;
Norifumi Goto, Ogaki, JP;
Iwao Motoyama, Ogaki, JP;
Tetsushi Iwashita, Ogaki, JP;
Kunio Nomura, Ogaki, JP;
Assignee:
Yabashi Industries Co., Ltd., Gifu, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C09C / ; C01F / ; C01F / ;
U.S. Cl.
CPC ...
423430 ; 106464 ;
Abstract
Disclosed is a novel process of producing plate-shaped calcium carbonate particles. The process comprises the steps of adding aqueous calcium hydrogen carbonate solution with a temperature of less than 50.degree. C. into an aqueous medium bath held at a temperature of not less than 50.degree. C. to generate plate-shaped calcium carbonate particles in the bath, the temperature of the bath being kept not less than 50.degree. C. during the addition of the aqueous calcium hydrogen carbonate solution; and recovering the generated plate-shape calcium carbonate particles.