Patents by Inventor Steven A Russell

Steven A Russell 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).

  • Circuit board material with barrier layer
    Patent number: 5689227
    Abstract: A circuit board material is disclosed which includes a support layer, at least one electrical resistance layer having a preselected resistivity adhered to the support layer, a barrier layer adhered to the electrical resistance layer, and a conductive layer adhered to the barrier layer. The barrier layer is capable of protecting the resistance layer from attack by alkaline ammoniacal copper etchants. A method of producing the circuit board material is also disclosed.
    Type: Grant
    Filed: January 17, 1996
    Date of Patent: November 18, 1997
    Assignee: Ohmega Electronics, Inc.
    Inventors: Phong Xuan Nguyen, Steven Russell Nissen