Patents by Inventor Thomas H. Hager

Thomas H. Hager 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 for manufacturing ohmic contacts having low transfer resistances
    Patent number: 4894350
    Abstract: A method for manufacturing ohmic contacts having low transfer resistances on doped semiconductor material, whereby the doping is implanted self-aligning using mask technique and the metallization is applied and, after removal of the mask layer, a temperature-time cycle occurs for simultaneous annealing the doping and alloying in the metallization.
    Type: Grant
    Filed: September 23, 1988
    Date of Patent: January 16, 1990
    Assignee: Siemens Aktiengesellschaft
    Inventors: Hans P. Zwicknagl, Helmut Tews, Thomas H. Hager