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Class Information
Number: 502/519
Name: Catalyst, solid sorbent, or support therefor: product or process of making > Reagent grade (e.g., ultra pure)
Description: Collection of art disclosing compositions of this class (generally sorbents) which are free of any components which could contaminate or interfere in subsequent chemical reactions or analysis.

Patents under this class:

Patent Number Title Of Patent Date Issued
6783576 Gas purifier system for removing trace impurities from a reactive fluid Aug. 31, 2004
6783577 Gas purifier system containing an ultra-low emission carbon material Aug. 31, 2004
6710012 Method for producing an ultra-low emission carbon material Mar. 23, 2004
6547861 Method and materials for purifying reactive gases using preconditioned ultra-low emission carbon material Apr. 15, 2003
6425946 Method and apparatus for removing trace impurities from a gas using superactivated carbon material Jul. 30, 2002
4248736 Fibrous adsorbent for hemoperfusion Feb. 3, 1981
4134857 Use of tannic or gallic acid to produce low beverage soluble iron content filter aid Jan. 16, 1979
3996162 Analytical sorbent and method of use Dec. 7, 1976

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