Patents by Inventor Jörg Eichholz

Jörg Eichholz 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).

  • Control circuit for controlling an electron-emitting device
    Patent number: 7095186
    Abstract: A control circuit for controlling an electron-emitting device is formed to draw, with a voltage applied, an excitation current being related to a number of electrons emitted. The inventive control circuit includes a first determinator for determining whether an amount of charge transported by the excitation current has reached a predetermined charge threshold value, a second determinator for determining whether a magnitude of the excitation current has reached a predetermined current threshold value, and a switch for switching off the excitation current as soon as the first determinator determines that the amount of charge has reached a predetermined charge threshold value, or as soon as the second determinator determines that the magnitude of the excitation current is smaller than the predetermined current threshold value.
    Type: Grant
    Filed: March 1, 2005
    Date of Patent: August 22, 2006
    Assignee: Fraunhofer-Gesellschaft zur Foerderung der angewandte Forschung e.V.
    Inventor: Jörg Eichholz