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. 01, 1986
Filed:
Aug. 03, 1984
Applicant:
Inventor:
Robert H Friedman, Houston, TX (US);
Assignee:
Getty Oil Company, Houston, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C01G / ; C01G / ; C01G / ;
U.S. Cl.
CPC ...
423 66 ; 423 68 ; 423140 ; 423150 ;
Abstract
Metals such as nickel and vanadium can be recovered from scrubber waste by first lowering the pH of the waste to a level at which its major metal constituents will be substantially solubilized, and then raising the pH in increments to successively precipitate the metals it contains.