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. 22, 2008
Filed:
Mar. 27, 2003
Applicants:
Kouichi Yokoyama, Kitakyushu, JP;
Sadaji Narituka, Kitakyushu, JP;
Kiyoshi Yamamoto, Yokohama, JP;
Hachiro Hirano, Tokyo, JP;
Inventors:
Kouichi Yokoyama, Kitakyushu, JP;
Sadaji Narituka, Kitakyushu, JP;
Kiyoshi Yamamoto, Yokohama, JP;
Hachiro Hirano, Tokyo, JP;
Assignee:
Asahi Glass Company, Limited, Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
C01D 1/32 (2006.01);
U.S. Cl.
CPC ...
Abstract
A method for producing sodium hydrogencarbonate crystal particles having a low caking property, which comprises lowering the potassium concentration in sodium hydrogencarbonate crystal particles having a mean particle diameter of from 50 to 500 μm to a level of at most 50 mass ppm.