Patents by Inventor Helga Weis

Helga Weis 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).

  • High-T.sub.c superconductor or precursor material for the oxide-powder-in-tube method (OPIT)
    Patent number: 6043198
    Abstract: The present invention relates to a process for preparing a high-T.sub.c superconductor as a precursor material for the oxide-powder-in-tube method, which involves mixing the oxides of the elements Bi, Sr, Ca and Cu and completely melting them at temperatures of .gtoreq.1000.degree. C., then casting the melt onto a substrate which is kept at room temperature, and disintegrating the cooled melt block and grinding it into a powder.
    Type: Grant
    Filed: August 15, 1997
    Date of Patent: March 28, 2000
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Marc Neubacher, Joachim Bock, Christoph Lang, Eberhard Preisler, Helga Weis
  • (Bi,Pb)SrCaCuO precursor material for the oxide powder in tube method (OPIT)
    Patent number: 5670434
    Abstract: Process for preparing a high-T.sub.c superconductor as a precursor material for the oxide-powder-in-tube method (OPIT). The present invention relates to a process for preparing a high-T.sub.c superconductor as a precursor material for the oxide-powder-in-tube method, which involves mixing the oxides of the elements Bi, Sr, Ca and Cu and completely melting them at temperatures of >1000.degree. C., then casting the melt onto a substrate which is kept at room temperature, and disintegrating the cooled melt block and grinding it into a powder.
    Type: Grant
    Filed: January 30, 1996
    Date of Patent: September 23, 1997
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Marc Neubacher, Joachim Bock, Christoph Lang, Eberhard Preisler, Helga Weis
  • Process for preparing a high-TC superconductor as a precursor material for the oxide-powder-in-tube method (OPIT)
    Patent number: 5541154
    Abstract: Process for preparing a high-T.sub.c superconductor as a precursor material for the oxide-powder-in-tube method (OPIT). The present invention relates to a process for preparing a high-T.sub.c superconductor as a precursor material for the oxide-powder-in-tube method, which involves mixing the oxides of the elements Bi, Sr, Ca and Cu and completely melting them at temperatures of .gtoreq.1000.degree. C., then casting the melt onto a substrate which is kept at room temperature, and disintegrating the cooled melt block and grinding it into a powder.
    Type: Grant
    Filed: February 16, 1994
    Date of Patent: July 30, 1996
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Marc Neubacher, Joachim Bock, Christoph Lang, Eberhard Preisler, Helga Weis