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:
Apr. 18, 1989
Filed:
Jul. 20, 1987
Applicant:
Inventors:
David P Devonald, Oldham, GB;
Anthony J Nelson, Manchester, GB;
Peter M Quan, Rochdale, GB;
David Stewart, Royton, GB;
Assignee:
Imperial Chemical Industries PLC, London, GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D / ;
U.S. Cl.
CPC ...
540492 ; 540493 ; 540499 ; 548336 ; 548337 ; 548335 ; 548323 ; 544342 ;
Abstract
Metal values are extracted from aqueous solutions containing halide or pseudohalide anion using 1,1'-substituted 2,2'-biimidazole or bibenzimidazole compounds. Useful for the solvent extraction of zinc and copper from chloride leach solutions.
Devonald, David. (1989). Process for the extraction of metal values and novel metal extractants (U.S. Patent No. 4822880). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4822880
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile