Patents by Inventor Guenter Petzow

Guenter Petzow 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 for increasing the pinning force of superconducting Bi-Sr-Ca-Cu-O ceramic moldings
    Patent number: 5716909
    Abstract: Process for increasing the pinning force of superconducting Bi-Sr-Ca-Cu-O ceramic moldings, which comprises heating the pure-phase 2212 phase of a Bi-Sr-Ca-Cu-O ceramic molding under pure oxygen or an oxygen-containing gas for from 1 to 40 minutes to a temperature of from 825.degree. to 900.degree. C. and generating secondary-phase precipitates in the process.
    Type: Grant
    Filed: October 1, 1996
    Date of Patent: February 10, 1998
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Peter Majewski, Guenter Petzow, Fritz Aldinger, Bernhard Hettich, Steffen Elschner