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:
May. 27, 2003
Filed:
May. 03, 2002
Applicant:
Inventors:
Zbigniew Tadeusz Fidkowski, Macungie, PA (US);
Paul Higginbotham, Guildford, GB;
Assignee:
Air Products and Chemicals, Inc., Allentown, PA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F25J 3/00 ;
U.S. Cl.
CPC ...
F25J 3/00 ;
Abstract
A method and system for producing nitrogen and/or oxygen by air separation. The system includes at least one high pressure column, at least one low pressure column, and a reboiler-condenser. The method includes generating a high pressure nitrogen stream from the high pressure column and using energy from the high pressure nitrogen stream to provide nitrogen reflux to the high pressure column.