Patents by Inventor James R. Griffth

James R. Griffth 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).

  • Alkanediamide-linked polyphthalocyanines coordinated with SnCl.sub.2
    Patent number: 4195166
    Abstract: A polphthalocyanine with the structure formula: ##STR1## prepared by mixing SnCl.sub.2.2H.sub.2 O with N, N'-bis(3,4-dicyanophenyecane diamide of which the structural formula is: ##STR2## heating the mixture to a temperature from about 175.degree. C. to about 185.degree. C. for about 15 to 20 minutes to form a resin; and curing the resin at a temperature from about 190.degree. C. to about 230.degree. C. The polyphthalocyanine is useful as an adhesive, as a matrix for glass or carbon-fiber reinforced composites, and as structural material.
    Type: Grant
    Filed: October 23, 1978
    Date of Patent: March 25, 1980
    Assignee: The United State of America as represented by the Secretary of the Navy
    Inventors: James R. Griffth, Jacques G. O'Rear