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. 04, 1979
Filed:
Apr. 06, 1978
Applicant:
Inventors:
Walton W Welna, Saint Paul, MN (US);
Lowell C Frank, Saint Paul, MN (US);
Assignee:
Minnesota Mining & Manufacturing Company, St. Paul, MN (US);
Primary Examiner:
Int. Cl.
CPC ...
C04B / ;
U.S. Cl.
CPC ...
106 67 ; 106 71 ; 106900 ; 405130 ;
Abstract
A stabilizing agent and backfill composition for providing a thermally stable environment for buried electrical equipment comprising from about 90 to about 99 percent by weight soil and from about 1 to about 10 percent by weight of the stabilizing agent, which is comprised of a mixture of clay and a dispersing agent therefor, wherein the dispersing agent comprises at least about 0.25 percent by weight of the stabilizing agent.