Patents Assigned to Siemens Katiengesellschaft
  • Induction coil in the form of a flat coil for crucible-free floating zone melting
    Patent number: 4506132
    Abstract: Flat induction heating coil for crucible-free floating zone melting a semiconductor crystalline rod having a turn annularly surrounding the semiconductor rod, the turn being formed with at least one passage therethrough for a cooling liquid, including an energy concentrator located at an inner side of the heating coil turn facing towards the semiconductor rod to be melted, the energy concentrator being subdivided into a plurality of segments electrically isolated from one another.
    Type: Grant
    Filed: September 29, 1982
    Date of Patent: March 19, 1985
    Assignee: Siemens Katiengesellschaft
    Inventor: Wolfgang Keller