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:
Oct. 30, 2018
Filed:
Mar. 31, 2015
Applicant:
Nippon Paper Industries Co., Ltd., Tokyo, JP;
Inventors:
Assignee:
NIPPON PAPER INDUSTRIES CO., LTD., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
C01F 11/18 (2006.01); C09C 1/02 (2006.01); D21H 17/67 (2006.01); D21H 19/38 (2006.01); C08K 3/26 (2006.01); C08L 23/12 (2006.01); B01J 19/00 (2006.01);
U.S. Cl.
CPC ...
C01F 11/181 (2013.01); B01J 19/008 (2013.01); C08K 3/26 (2013.01); C08L 23/12 (2013.01); C09C 1/021 (2013.01); D21H 17/675 (2013.01); D21H 19/385 (2013.01); C01P 2004/03 (2013.01); C01P 2004/61 (2013.01); C01P 2004/62 (2013.01); C01P 2004/64 (2013.01); C01P 2006/12 (2013.01); C01P 2006/19 (2013.01); C08K 2003/265 (2013.01); C08L 2205/16 (2013.01);
Abstract
The present invention aims to provide techniques for efficiently preparing calcium carbonate particles having an average primary particle size of less than 1 μm. Calcium carbonate microparticles having an average primary particle size of less than 1 μm can be synthesized efficiently by synthesizing calcium carbonate in the presence of cavitation bubbles.