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:
Jun. 11, 2002
Filed:
Jul. 13, 2000
Applicant:
Inventors:
Brian O'Hearn, Richmond Hill, CA;
Terrance Ronald Walton, Oakville, CA;
Assignee:
Lafarge Canada Inc., Quebec, CA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C04B 1/812 ;
U.S. Cl.
CPC ...
C04B 1/812 ;
Abstract
A binder for mine tailings and aggregate used as a backfill for an underground void comprises ferrous slag, and cement kiln dust, optionally with lime kiln dust; the binder displays strength characteristics better than or comparable to those achieved with conventional binders based on Portland cement and slag.