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. 07, 2000
Filed:
Mar. 10, 1999
Applicant:
Inventors:
Francois De Bussy, Paris, FR;
Lasad Jaouani, Bobigny, FR;
Assignees:
Air Liquide America Corporation, Houston, TX (US);
L'Air Liquide Societe Anonyme pour L'Etude et L'Exploitation des, , US;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F25J / ;
U.S. Cl.
CPC ...
62647 ;
Abstract
In order to allow more flexible operation of a column for separating air by cryogenic distillation, a first air stream (6) exchanges heat with a liquid (16) which vaporizes, while a second air stream (7, 7A) is drawn off from an intermediate level in the exchange line and sent to a column in order to be distilled therein.