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. 20, 1976
Filed:
Sep. 11, 1974
Applicant:
Inventors:
John E Ashton, Fort McMurray, CA;
H James Davitt, Edmonton, CA;
Assignee:
Great Canadian Oil Sands Limited, Toronto, CA;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B01D / ;
U.S. Cl.
CPC ...
210 83 ; 208 13 ;
Abstract
An environmentally attractive method for storing sludge containing water, mineral matter, bitumen, and liquid hydrocarbon formed in a retention pond used to store effluent discharge waste streams associated with aqueous extraction of bitumen from tar sands comprising inserting the sludge below the surface of an unpolluted pond.