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. 26, 1980
Filed:
Apr. 02, 1979
Applicant:
Inventors:
Hiroji Shibazaki, Takarazuka, JP;
Setsuji Edagawa, Nishinomiya, JP;
Yoshinaga Okamoto, Nishinomiya, JP;
Assignee:
Shiraishi Kogyo Kaisha, Ltd., Hyogo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B05D / ;
U.S. Cl.
CPC ...
427215 ; 423267 ; 423274 ; 423268 ; 260 4214 ; 106306 ; 1063 / ; 1063 / ; 427220 ; 427213 ;
Abstract
A method for improving calcium carbonate by causing calcium carbonate particles to undergo contact reaction with an acid gas capable of reacting with calcium carbonate for finely uniformizing the calcium carbonate particle size and, at the same time, coating the surface of the calcium carbonate particles with the calcium salt of the acid of the acid gas.