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:
Feb. 17, 1987
Filed:
Aug. 05, 1985
Applicant:
Inventor:
Murray M Young, Waterloo, CA;
Assignee:
University of Waterloo, Waterloo, CA;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C12M / ; C12M / ; C12M / ;
U.S. Cl.
CPC ...
435252 ; 435254 ; 435314 ; 435315 ; 435804 ; 435818 ; 422227 ; 422231 ; 261123 ; 261124 ;
Abstract
Multiphase contacting between gas, solid and liquid phases is effected using a novel apparatus comprising a cylindrical vessel, a draft tube, a conical bottom and a gas-sparger system. Mild and uniform mixing is achieved within the novel apparatus while stagnant zones and zones of high shear within the vessel are eliminated. Gas-liquid mass transfer is achieved at rates comparable to conventional high-shear mechanically-stirred devices while the efficiency of liquid mixing in the vessel is better than conventional low-shear pneumatically-stirred devices. The apparatus is preferably used in fermentation processes.