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:
Mar. 19, 1991
Filed:
Dec. 02, 1988
Applicant:
Inventors:
Lawrence J Lake, Edgerton, OH (US);
Charles R Rumpeltin, Plainsboro, NJ (US);
William R Herberger, Freehold, NJ (US);
Assignee:
Quigley Company Inc., New York, NY (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C04B / ;
U.S. Cl.
CPC ...
501108 ; 501109 ; 501110 ; 501117 ;
Abstract
A refractory composition is disclosed which consists essentially of sized refractory aggregate including at least 10%, based on the total weight of the composition, MgO containing grain having at least 50% MgO and passing a 5 mesh screen, from about 0.1 to about 1.5%, on the dehydrated basis, of chrome sulfate or sodium sulfate, from about 0.1 to about 1.5% of an organic acid or salt thereof; and up to about 1.1% of a plasticizer.