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:
Dec. 13, 1976
Filed:
Jul. 02, 1975
Applicant:
Inventor:
Gunnar Hannestad, Skedsmokorset, NO;
Assignee:
Forskningsgruppe For Sjeldne, Jordarter, Oslo, NO;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B01F / ; B01D / ;
U.S. Cl.
CPC ...
210319 ; 2326 / ; 2327 / ; 210 / ; 210320 ;
Abstract
An apparatus for countercurrent extraction of a dissolved material from a first liquid phase to a second liquid phase is disclosed. The apparatus comprises overflow provision for each of the liquid phases with preferably adjustable overflow for the lower liquid phase whereby desired control of interface level can be obtained.