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. 20, 2007
Filed:
Feb. 25, 2005
Emmanuel Garnier, Paris, FR;
Daniel Gourdain, Lagny sur Marne, FR;
Frederic Judas, Chatenay-Malabry, FR;
Patrick Le Bot, Vincennes, FR;
Frederic Staine, Le Plessis Trevise, FR;
Emmanuel Garnier, Paris, FR;
Daniel Gourdain, Lagny sur Marne, FR;
Frederic Judas, Chatenay-Malabry, FR;
Patrick Le Bot, Vincennes, FR;
Frederic Staine, Le Plessis Trevise, FR;
Abstract
A process and an apparatus for separating air by cryogenic distillation. The apparatus has a medium pressure column thermally coupled to a low pressure column. Compressed and purified air is cooled to cryogenic temperature in an exchanger, and sent at least partly to the medium pressure column. Streams enriched in oxygen and nitrogen are sent from the medium pressure column to the low pressure column and, streams enriched in nitrogen and oxygen are removed from the low pressure.