Patents by Inventor Thomas C. Babcock

Thomas C. Babcock 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).

  • Adhesion promoter for additively plated printed circuit boards
    Patent number: 4127438
    Abstract: Subsequent to the additive plating of copper circuitry on a substrate and prior to further steps such as lamination to form a multilayer printed circuit board, a sequence of etching and cleaning steps are used to improve the lamination strength of the additively plated copper. The circuitized substrate is dipped in an etchant bath and then baked at an elevated temperature for 2-4 hours. Following this the circuitized substrate is washed with an organic cleaner, water rinsed and air dried. Thereafter a chlorite oxide layer is added to the circuitized substrate and it is ready for further processing.
    Type: Grant
    Filed: November 7, 1977
    Date of Patent: November 28, 1978
    Assignee: International Business Machines Corporation
    Inventors: Thomas C. Babcock, Theron LaR. Ellis, Henry C. Majka