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:
Sep. 25, 2001
Filed:
Nov. 09, 1999
Applicant:
Inventors:
Assignee:
Primary Examiner:
Int. Cl.
CPC ...
B01D 5/322 ; B01D 5/304 ;
U.S. Cl.
CPC ...
B01D 5/322 ; B01D 5/304 ;
Abstract
A method for delivering at least two working gases from a common air supply comprising the steps of depleting the air in O,in order to obtain a first gas mixture having an O,content less than or equal to t,; delivering at least a portion of this first gas mixture as a first working gas; depleting another portion of this first gas mixture in O,in order to obtain the second gas mixture having an O,content less than or equal to t,, wherein t,is greater than t,; and delivering the second gas mixture as a second working gas.