Patents by Inventor Roger Heymann

Roger Heymann 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).

  • Spray gun for a direct-vision image storage tube and an image-storage tube using this gun
    Patent number: 4185226
    Abstract: A quadripolar lens incorporated in the spray gun of direct vision image storage tubes enables the density of electrons in the spray beam to be controlled, over a wide range, by acting on the potential of the control grid of the gun, without varying the acceleration potentials.
    Type: Grant
    Filed: March 23, 1978
    Date of Patent: January 22, 1980
    Assignee: Thomson-CSF
    Inventor: Roger Heymann