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. 13, 2001
Filed:
Aug. 25, 2000
Applicant:
Inventors:
James Robert Dray, Buffalo, NY (US);
Theodore Fringelin Fisher, Amherst, NY (US);
Assignee:
Prakair Technology, Inc., Danbury, CT (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F25J 1/00 ;
U.S. Cl.
CPC ...
F25J 1/00 ;
Abstract
A cryogenic rectification system comprising a rare gas concentrator column for producing a liquid having an enhanced concentration of krypton and xenon, and which processes atmospheric fluids and also produces gaseous oxygen and liquid nitrogen.