Patents by Inventor Donald E. Booker

Donald E. Booker 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).

  • Chemical plating process
    Patent number: 4002778
    Abstract: A process for chemical plating of nickel or cobalt onto materials otherwise noncatalytic to the plating baths by pretreating the materials with a reducing agent such as sodium borohydride or dimethylamine borane prior to chemical plating. Treating the material with an oxidizing agent prior to the pretreatment is also useful, especially for plating copper. The invention is particularly desirable for plating nickel onto copper conductor patterns on polymeric substrate circuit boards. The copper is plated with nickel, and the substrate is not.
    Type: Grant
    Filed: December 15, 1975
    Date of Patent: January 11, 1977
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Harold E. Bellis, Donald E. Booker