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:
Jan. 19, 1993
Filed:
Mar. 11, 1991
Applicant:
Inventors:
William Rostoker, deceased, late of Homewood, IL (US);
Gareth Rostoker, Glenwood, IL (US);
Julius J Bonini, Munster, IN (US);
Gary W Klimczak, Lemont, IL (US);
Assignee:
Rostoker, Inc., Burnham, IL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C22B / ;
U.S. Cl.
CPC ...
75414 ; 75323 ; 75759 ;
Abstract
Waste materials containing metal oxides and/or metals and their salts are converted to useful products. The waste materials are combined in such proportions that when heated, they form a composite that becomes molten and pourable at temperatures below about 1600.degree. C. Provision is also made for converting some of the metal oxides in the molten material to free metal which is then separated from the molten material. A modified cupola can be used to generate the temperature and reducing conditions suitable for carrying out the process.