Patents by Inventor Peter Grunberg

Peter Grunberg 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).

  • Magnetic field sensor with ferromagnetic thin layers having magnetically antiparallel polarized components
    Patent number: 4949039
    Abstract: A magnetic field sensor comprises a stack of ferromagnetic layers advantageously separated by an intermediate layer of proper material and so arranged that the ferromagnetic layers are with one component in an antiparallel magnetization direction. The sensor is provided with terminals for passing an electric current through the stack and for detecting a voltage drop across the stack. The magnetic resistance change with such a stack is substantially greater than in systems which do not provide an antiparallel magnetization or do not have the intermediate layer.
    Type: Grant
    Filed: June 14, 1989
    Date of Patent: August 14, 1990
    Assignee: Kernforschungsanlage Julich GmbH
    Inventor: Peter Grunberg