Patents by Inventor Ingo Schwirtlich

Ingo Schwirtlich 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).

  • Process and apparatus for producing semi-conductor foils
    Patent number: 4670096
    Abstract: In the production of a semi-conductor foil by solidification of a liquid semi-conductor on a horizontal support, the improvement which comprises positioning a molding body on the horizontal support, supplying the liquid semi-conductor to the molding body, and effecting relative movement between the molding body and support in a direction parallel to the support. Thereby fault-free silicon foils can readily be produced.
    Type: Grant
    Filed: May 6, 1985
    Date of Patent: June 2, 1987
    Assignee: Bayer Aktiengesellschaft
    Inventors: Ingo Schwirtlich, Peter Woditsch
  • Process for the production of coarsely crystalline silicon
    Patent number: 4561930
    Abstract: A process for the production of columnarly grown blocks of silicon containing coarsely crystalline regions comprising cooling a silicon melt in a mold, selectively effecting solidification at the melt surface and advancing the solidification front downwardly. The blocks can be sawed into chips, useful for solar cells.
    Type: Grant
    Filed: March 13, 1984
    Date of Patent: December 31, 1985
    Assignee: Bayer Aktiengesellschaft
    Inventors: Ingo Schwirtlich, Peter Woditsch, Wolfgang Koch