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:
Jul. 19, 1994
Filed:
Dec. 04, 1992
Applicant:
Inventors:
Brian C Fiedler, East Amherst, NY (US);
James J Maloney, Tonawanda, NY (US);
James R Handley, East Amherst, 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 22 ; 62 31 ; 62 40 ; 62 11 ;
Abstract
A cryogenic helium production system wherein a feed which includes carbon dioxide is processed in a dual temperature system including an upstream higher temperature and higher pressure column or dephlegmator, thus eliminating the need for a separate non-cryogenic carbon dioxide removal step.