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:
Oct. 29, 1991
Filed:
Feb. 05, 1991
Applicant:
Inventors:
Dominique Thoraval, Candiac DT, CA;
John W Bovenkamp, Kanata, CA;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01N / ;
U.S. Cl.
CPC ...
436104 ; 436120 ; 436167 ; 8506 ; 8639 ;
Abstract
There is provided a new and useful paper type G and or type V chemical agent detector comprising a paper base including, associated with the base, at least one dye chosen from 4-((4-(phenylazo)phenyl)azo)-phenol (D.Y. 23), p-ethoxyphenyl-azo-.alpha.-hydroxynaphthoic acid (PEN), or 3', 3', 5', 5'-tetrabromophenolphthalein ethyl ester (TBPE).