Patents by Inventor Michel Camus

Michel Camus has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Safety means, paper and document against falsification by chemical agent
    Patent number: 4618402
    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.
    Type: Grant
    Filed: July 24, 1985
    Date of Patent: October 21, 1986
    Assignee: Arjomari-Prioux
    Inventor: Michel Camus