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:
Jun. 03, 1980
Filed:
May. 05, 1978
Applicant:
Inventors:
Clifford M Detz, White Plains, NY (US);
George Barvinchak, Chappagua, NY (US);
Assignee:
Union Carbide Corporation, New York, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07G / ;
U.S. Cl.
CPC ...
435267 ; 435282 ; 209-9 ; 210-7 ;
Abstract
A process for the removal of pyrite from coal wherein an aqueous slurry containing finely-divided coal particles is subjected to the action of iron and sulfur oxidizing microorganisms selected from the Thiobacillus ferrooxidans group in a concentration range of between about 3.times.10.sup.10 and 1.times.10.sup.12 cells per gram of pyrite present in the coal slurry.