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:
Jul. 25, 1989
Filed:
Oct. 09, 1987
Applicant:
Inventors:
Giorgio Bornengo, Novara, IT;
Filippo M Carlini, Vicenza, IT;
Anna Marabini, Frascati, IT;
Vittorio Alesse, Rome, IT;
Assignee:
Consiglio Nazionale Delle Ricerche, Rome, IT;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B03D / ; C22B / ; C07C / ;
U.S. Cl.
CPC ...
75-2 ; 209166 ; 252 61 ; 558412 ; 564162 ; 564440 ;
Abstract
Ionic organic collecting agents for the selective flotation of lead and zinc ores, said agents having the following general formula ##STR1## wherein the symbols employed have the meaning given below: R represents H, CH.sub.3, C.sub.2 H.sub.5, or an alkoxyalkyl group,