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:
Aug. 30, 1977
Filed:
Mar. 10, 1976
Applicant:
Inventors:
Harvey J Richards, Columbus, OH (US);
Bhupendra C Trivedi, Worthington, OH (US);
Assignee:
Ashland Oil, Inc., Ashland, KY (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07D / ;
U.S. Cl.
CPC ...
2602 / ; 423 24 ;
Abstract
A class of hydrocarbyl substituted 8-hydroxyquinolines wherein the indicated substituent arises through the direct alkylation of said quinolinol with a ketone obtained by condensing methyl ketone with a hindered aldehyde. These alkylates are useful metal collectors in hydrometallurgical extraction processes designed for the recovery of metal values from dilute aqueous solutions thereof.