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. 05, 1985
Filed:
Feb. 14, 1983
Applicant:
Inventors:
Samuel A Gardner, Lakeland, FL (US);
Thomas E Ban, South Euclid, OH (US);
Assignee:
Davy McKee Corporation, Lakeland, FL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C01B / ; C01F / ;
U.S. Cl.
CPC ...
423168 ; 423178 ; 423542 ; 423638 ; 432 72 ;
Abstract
Phosphogypsum is mixed with fine coal, balled, and charged to a travelling grate where the charge is heated under reducing conditions to evolve sulfur and/or sulfur dioxide for conversion into sulfuric acid.