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:
Mar. 22, 1988
Filed:
Oct. 01, 1986
Applicant:
Inventors:
Ravi Jain, North Plainfield, NJ (US);
Steven L Lerner, Berkeley Heights, NJ (US);
Robert A Mostello, Somerville, NJ (US);
Donald L MacLean, Annandale, NJ (US);
Assignee:
The BOC Group, Inc., Montvale, NJ (US);
Primary Examiner:
Int. Cl.
CPC ...
B01D / ;
U.S. Cl.
CPC ...
55 26 ; 55 27 ; 55 31 ; 55 58 ; 55 62 ; 55 66 ; 55 75 ; 62 18 ;
Abstract
Argon and nitrogen are produced in a basic two step process. In a first step, oxygen is removed from a compressed air feed using low temperature PSA (pressure swing adsorption). In the second step, argon and nitrogen mixture is separated by cryogenic distillation. The process yields crude liquid argon and very high purity gaseous nitrogen.