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:
Jan. 09, 2007
Filed:
Oct. 02, 2003
Applicant:
Leslie A. Jardine, Salem, MA (US);
Inventor:
Leslie A. Jardine, Salem, MA (US);
Assignee:
W.R. Grace & Co.-Conn., Columbia, MD (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C04B 24/12 (2006.01);
U.S. Cl.
CPC ...
Abstract
An exemplary method of the invention comprises introducing into a grinding mill, wherein cement clinker is ground to provide cement powder, a diamine such as tetrahydroxylethylethylene diamine, and an alkanolamine such as triethanolamine or triisopropanolamine. The combination of the diamine and alkanolamine provides superior grinding efficiency compared to diamine or alkanolamine added separately.