Patents by Inventor Wilson J. Barnes

Wilson J. Barnes 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).

  • Electrocoating compositions and electrocoating method
    Patent number: 4257861
    Abstract: Electrocoating compositions are provided in the form of aqueous dispersions of particulated polyimide. In addition, a method is also described for electrocoating metallic conductors, such as copper wire or aluminum strip. The particulated polyimide aqueous dispersions can be electrodeposited at significantly lower voltages than the corresponding polyamide acid salts.
    Type: Grant
    Filed: December 3, 1979
    Date of Patent: March 24, 1981
    Assignee: General Electric Company
    Inventors: John H. Lupinski, Wilson J. Barnes
  • Method for making aqueous polyimide electrocoating mixtures
    Patent number: 4065420
    Abstract: A method is provided for making stable electrocoatable polyimide mixtures having a high water content. A solution of polyimide in a dipolar aprotic solvent is heated in the presence of base resulting in a transitory viscosity decrease. Major amounts of water can thereafter be added to the mixture during its reduced viscosity state to produce a stable aqueous mixture.
    Type: Grant
    Filed: December 17, 1975
    Date of Patent: December 27, 1977
    Assignee: General Electric Company
    Inventors: John H. Lupinski, Edith M. Boldebuck, Wilson J. Barnes