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:
Apr. 17, 2001
Filed:
Mar. 25, 1999
Applicant:
Inventors:
Jingnian Zhang, Schaumburg, IL (US);
Roberta L. McMahon, Winnetka, IL (US);
Assignee:
Zellweger Analytics, Inc., Lincolnshire, IL (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01N 2/178 ; G01J 1/50 ;
U.S. Cl.
CPC ...
G01N 2/178 ; G01J 1/50 ;
Abstract
A substrate such as a porous tape coated with an adsorbent and impregnated with a processing solution which includes a silver salt, an organic acid such as benzenetricarboxylic acid or benzenesulfonic acid (with or without the addition of nitric acid) and a glycol is a sensitive detecting means for hydride gases and is stable upon exposure to light.