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:
Dec. 21, 1976
Filed:
Nov. 01, 1974
Applicant:
Inventors:
Jacques Baudouin, Montelimar, F;
Jean-Pierre Caspar, Le Teil, F;
Assignee:
Lafarge (Societe Anonyme), Paris Cedex, F;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C09C / ;
U.S. Cl.
CPC ...
106306 ; 106102 ;
Abstract
A compound of calcium carbonate and of hydrated tobermorites, constituted of 70 to 15% tobermorites, which may contain free hydrated silica in amounts to 0 to 15% in weight expressed in SiO.sub.2, and of 30 to 85% calcium carbonate. The process includes completely hydrating white Portland cements between about 5 and 100.degree. C to form a paste having a dry extract of 5 to 70% by weight until at least a decrease in the pH-value occurs. The compound is an industrial charge particularly for paper-making and paint-making industries.