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:
Apr. 10, 1979
Filed:
Nov. 01, 1977
Applicant:
Inventors:
John Hughes, Arlington Heights, IL (US);
Peter L Maul, Addison, IL (US);
Assignee:
American Colloid Company, Skokie, IL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C04B / ;
U.S. Cl.
CPC ...
106 67 ;
Abstract
This invention relates to a method for making brick from shale or a mixture of clay and shale by adding to the shale or shale mixture an additive containing sodium bentonite, a water soluble anionic polyelectrolyte polymer, and, preferably, a water soluble dispersant. The additive increases the plasticity and the green strength of the shale or shale mixture so that high quality bricks can be produced from such raw material.