Patents by Inventor Walter M. Downs

Walter M. Downs 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).

  • Solder pad/circuit trace interface and a method for generating the same
    Patent number: 5024734
    Abstract: A circuit trace/solder pad interface for closely spaced circuit traces is presented in which solder must be deposited to form a solder pad upon the circuit trace and the solder not migrate onto the circuit trace upon solder reflow. Through the intentional selection of solderably incompatible metals for the circuit trace and the solder pad, the solder pad may be isolated from the circuit trace thereby retaining solder on the pad. Furthermore a method for fabricating this circuit trace/solder pad interface is presented.
    Type: Grant
    Filed: December 27, 1989
    Date of Patent: June 18, 1991
    Assignee: Westinghouse Electric Corp.
    Inventors: Walter M. Downs, Michael J. Ankrom