Patents by Inventor Kristian Brok

Kristian Brok 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 producing superconducting tapes with a high current density
    Patent number: 6182351
    Abstract: The inventive method for producing a superconductor is accomplished by longitudinally pulling a metal pipe having a cavity filled with a metal oxide mixture in polycrystalline powder to reduce the outer diameter of the pipe, sintering the metal oxide mixture to form a workpiece, and progressively flattening the workpiece in a succession of pressings. The flattening step is conducted with a pair of coordinately operated clamping jaws, each of which having a work surface which is curvilinear with distinct opposite ends. The clamping jaws are mounted to hinged brackets connected by eccentric arms to rotatable shafts arranged for providing power transmission to the clamping jaws such that, during each of the pressings, each eccentric arm extends at an angle to a respective hinged bracket which is approximately 0° or approximately 180° when power transmission to the workpiece is maximal.
    Type: Grant
    Filed: May 2, 1996
    Date of Patent: February 6, 2001
    Assignee: NKT Research Center A/S
    Inventors: Qi Li, Kristian Brok, Torsten Freltoft, Leif Dalum