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:
Dec. 10, 1996
Filed:
Aug. 11, 1995
Applicant:
Inventors:
James T Shelton, deceased, late of Houston, TX (US);
Bao Ha, Vacaville, CA (US);
Assignee:
Liquid Air Engineering Corporation, Houston, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F25J / ; F25J / ;
U.S. Cl.
CPC ...
62643 ; 62647 ; 62648 ; 62900 ;
Abstract
A process for producing an ultra-high purity fluid product comprising the steps of collecting in the lower portion of a cryogenic fractionation zone an ultra-high purity fluid product; providing reboil to said fractionation zone by condensing a portion of a lesser purity composition of the same fluid product by indirect heat exchange in a first reboiler; and vaporizing said portion of said lesser purity composition by indirect heat exchange with a warmer stream of an impure fluid.