Patents by Inventor Roy E. Olson

Roy E. Olson 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).

  • Rounded-end protuberances for field-emission cathodes
    Patent number: 4551649
    Abstract: Protuberances, or posts 14, for field-emission cathodes, the posts 14 having rounded emitting tips 12. Control of the radius R, of the emitting tips 12 controls the factor 10.sup.8 /.beta.V upon which the current density of each post 14 depends. Proper radius selection for a given value of applied voltage, V, keeps the operating point of the cathode 10 on a region of the current density vs 10.sup.8 /.beta.V curve well below the region of impedance collapse, CG.
    Type: Grant
    Filed: December 8, 1983
    Date of Patent: November 5, 1985
    Assignee: Rockwell International Corporation
    Inventor: Roy E. Olson