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. 26, 1978
Filed:
Aug. 12, 1977
Applicant:
Inventors:
Oliver W Crinkelmeyer, Kilgore, TX (US);
Earl F Morris, Wagoner, OK (US);
Assignee:
The Dow Chemical Company, Midland, MI (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C04B / ; C04B / ;
U.S. Cl.
CPC ...
260 175 ; 106 89 ; 106 90 ; 252 / ; 260 / ;
Abstract
An aqueous hydraulic cement slurry is provided which has low fluid loss properties at elevated temperatures. In addition to water and a hydraulic cement the hydraulic cement slurry contains a polyamine compound; a lignoamine and/or lignosulfonate; a borate ion releasing compound; and a carbonate and/or bicarbonate.