Patents by Inventor Jean-Claude Rene Nicaise

Jean-Claude Rene Nicaise 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).

  • Process for the preparation of copper phthalocyanine
    Patent number: 3985767
    Abstract: A process for the preparation of copper phthalocyanine which comprises heating 4 moles of phthalodinitrile with about 1 mole of cuprous chloride at a temperature of from 140.degree. to 300.degree.C. in the presence of 10% to 30%, with respect to the weight of phthalodinitrile, of an ammonium salt which decomposes at a temperature of from 30.degree. to 200.degree.C. with the liberation of ammonia; and copper phthalocyanine prepared by this process.
    Type: Grant
    Filed: June 11, 1974
    Date of Patent: October 12, 1976
    Assignee: Produits Chimiques Ugine Kuhlmann
    Inventors: Jean-Claude Rene Nicaise, Louis Antoine Cabut