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:
Nov. 16, 1999
Filed:
May. 12, 1998
Applicant:
Inventor:
Alan Tat Cheng, Livingston, NJ (US);
Assignee:
Praxair Technology, Inc., Danbury, CT (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C12P / ;
U.S. Cl.
CPC ...
4352866 ; 4352867 ; 422224 ;
Abstract
A gas driven fermentation system wherein a gas such as air is passed heterogeneously upwardly through the fermentation broth to agitate and recirculate the broth, provide oxygen for fermentation and strip off carbon dioxide, and a second gas such as oxygen is passed homogeneously upwardly through the broth proximate the heterogeneous air flow to provide supplemental oxygen for fermentation.