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. 21, 1986
Filed:
Jul. 24, 1985
Applicant:
Inventor:
Michel Camus, Charavines, FR;
Assignee:
Arjomari-Prioux, Paris Cedex, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
D21H / ;
U.S. Cl.
CPC ...
162140 ; 162158 ; 1621681 ; 1621812 ; 428199 ; 428915 ; 428916 ;
Abstract
The paper according to the invention contains a non-fluorescent means against chemical falsification, reacting to the oxidizing agent/reducing agent couple. The paper according to the invention contains iron(III) and a product giving a complex colored with iron(II). Any attempt to falsify by chemical means provokes the reduction of the iron(III) into iron(II) immediately followed by the formation of the colored complex. According to the invention, the complexing agent is preferably 2,2-bipyridyl. Another complexing agent is orthophenantroline.