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. 23, 1993
Filed:
Mar. 26, 1992
Applicant:
Inventors:
Raymond F Drnevich, Clarence Center, NY (US);
Gerald A Paolino, Williamsville, NY (US);
Assignee:
Praxair Technology, Inc., Danbury, CT (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F25J / ;
U.S. Cl.
CPC ...
62 24 ; 62 28 ; 62 29 ; 62 30 ; 62 31 ; 62 41 ; 62 43 ; 62 44 ;
Abstract
A cryogenic rectification system wherein oxygen-enriched liquid from a higher pressure column is vaporized against condensing nitrogen-containing fluid which is employed as additional reflux in the lower pressure column thus increasing the column L/V ratio and the product recovery.