Patents by Inventor Douglass S. Darrow

Douglass S. Darrow 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 of sustaining a radial electric field and poloidal plasma rotation over most of the cross-section of a tokamak
    Patent number: H757
    Abstract: A radial electric field of a desired magnitude and configuration is created hroughout a substantial portion of the cross-section of the plasma of a tokamak. The radial electric field is created by injection of a unidirectional electron beam. The magnitude and configuration of the radial electric field may be controlled by the strength of the toroidal magnetic field of the tokamak.
    Type: Grant
    Filed: May 12, 1989
    Date of Patent: March 6, 1990
    Assignee: The United States of America as represented by the Department of Energy
    Inventors: Douglass S. Darrow, Masayuki Ono