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. 04, 2000
Filed:
Dec. 03, 1998
Applicant:
Inventors:
Daniel Gary, Montigny le Bretonneux, FR;
Rene Lardeau, Saulx les Chartreux, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D / ;
U.S. Cl.
CPC ...
95130 ; 95138 ; 95139 ; 95140 ; 95143 ; 95148 ;
Abstract
Process for purifying an inert fluid, in particular argon or helium, with respect to at least one of its impurities nitrogen (N.sub.2), oxygen (O.sub.2), carbon dioxide (CO.sub.2), carbon monoxide (CO) and hydrocarbons, in which at least some of the impurities are removed using a first adsorbent of the X zeolite type having a silica to aluminum ratio less than or equal to 1.15, and a purified inert fluid containing at most 10 ppb, preferably at most 1 ppb of impurities is recovered.