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. 21, 2014
Filed:
Apr. 17, 2012
Hiroshi Nagata, Shunan, JP;
Akinori Nakamura, Shunan, JP;
Hiroyoshi Kato, Shunan, JP;
Takashi Chabayashi, Shunan, JP;
Daihachi Kitayama, Shunan, JP;
Hiroshi Nagata, Shunan, JP;
Akinori Nakamura, Shunan, JP;
Hiroyoshi Kato, Shunan, JP;
Takashi Chabayashi, Shunan, JP;
Daihachi Kitayama, Shunan, JP;
Tokuyama Corporation, Shunan-Shi, JP;
Abstract
A cement clinker which can be sintered at 1,300 to 1,400° C. which is lower than the conventional sintering temperature and develops excellent strength characteristics such as mortar compression strength. The cement clinker has a total content of CA and CAF calculated by Bogue's formulas of 22 mass % or more, a CS content calculated by Bogue's formula of 60 mass % or more and an iron modulus (I.M.) of 1.3 or less, preferably 1.0 to 1.3. Since the total content of CA and CAF is 22 mass % or more, the cement clinker can be sintered at a low temperature and the reduction of strength when a cement composition is cured can be prevented by reducing the iron modulus of the cement clinker.