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:
Jun. 06, 2000
Filed:
Jan. 22, 1998
Applicant:
Inventor:
John Terence Lavin, Guildford, GB;
Assignee:
The BOC Group plc, Windlesham, GB;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
F25J / ;
U.S. Cl.
CPC ...
62640 ; 62643 ;
Abstract
A product cryogenic liquid mixture comprising oxygen and nitrogen having a chosen mole fraction of oxygen is produced by expanding, typically through a valve, a pressurized stream of a precursor fluid mixture, which may be liquid air, having a mole fraction of oxygen greater than said chosen mole fraction, and thereby forming a vapor phase depleted of oxygen and a liquid phase enriched in oxygen. The vapor phase is disengaged from the liquid phase in a phase separator. A stream of the vapor phase is condensed in a condenser. The condensate is collected in a storage vessel as the product cryogenic liquid mixture.