Patents by Inventor Michael D. Obara

Michael D. Obara 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).

  • Method for improving electromagnetic shielding performance of composite materials by electroplating
    Patent number: 5413694
    Abstract: A method of improving the electromagnetic (EM) shielding performance of a mposite material is provided. The composite material has conductive and semi-conductive filler particles suspended in a non-conductive resin. The filler particles can be up to 40 weight percent of the composite material. The composite material is electroplated with a conductive material onto a portion of its surface to improve the electrical connection between the conductive material and a portion of the filler particles. EM shielding performance can be further enhanced by injecting an exponentially decaying electromagnetic pulse through the composite material that has been electroplated.
    Type: Grant
    Filed: July 30, 1993
    Date of Patent: May 9, 1995
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: David S. Dixon, Michael D. Obara, James V. Masi, William G. Bradley