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:
Mar. 04, 1980
Filed:
Dec. 20, 1978
Applicant:
Inventor:
Bruce W Davis, Fullerton, CA (US);
Assignee:
Chevron Research Company, San Francisco, CA (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
B02C / ; E21C / ;
U.S. Cl.
CPC ...
299-5 ; 241-1 ;
Abstract
A method of in-situ coal recovery in slurry form from a coal deposit by first contacting the coal with a gaseous mixture of an oxygen-containing gas containing vaporized NO.sub.2, then with an aqueous alkaline solution to slurry the coal, and then recovering the slurried coal from the deposit. The particular aqueous alkaline solution disclosed herein contains ethanolamine.