Patents by Inventor Arthur R. Frederickson

Arthur R. Frederickson 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).

  • Radiation shield using electrical insulating materials and the spacecharge fields therein
    Patent number: 6476317
    Abstract: The invention provides improved shielding from high energy radiation, especially radiation in the form of electrons with kinetic energy from 0.1 to 10 million electron volts. The improvement is produced by the build-up of an electric field in the insulating material which acts to further attenuate or deflect the penetration of such radiation. The electric field builds up in the insulator and surrounding media because of the stopping of charge stemming from prior impinging radiation.
    Type: Grant
    Filed: September 7, 1999
    Date of Patent: November 5, 2002
    Assignee: The United States of America as represented by the Secretary of the Air Force
    Inventors: Arthur R. Frederickson, Stanley Woolf, John C. Garth
  • Process and apparatus for preventing the pulse discharge of insulators in ionizing radiation
    Patent number: 5160374
    Abstract: A semi-insulating coating or surface layer is applied over insulating materials such as a circuit board or wiring harness or feedthrough insulator. The paint is electrically fixed to ground and as a result leaks away charge buildup before large pulse discharges occur. For example, pure tin oxide particles in phenoxy resin binder forms a paintable application for the invention.
    Type: Grant
    Filed: July 24, 1990
    Date of Patent: November 3, 1992
    Assignee: The United States of America as represented by the Secretary of the Air Force
    Inventors: Arthur R. Frederickson, Joseph E. Nanevicz, Jeffrey S. Thayer, Dean B. Parkinson