Patents by Inventor Julie Chi-Sun Yang

Julie Chi-Sun Yang 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).

  • Thermal shock resistant asbestos-cement compositions and their preparation
    Patent number: 3933515
    Abstract: A thermal shock resisting asbestos-cement composition is prepared by adding a finely divided porosity increasing additive as a partial or complete replacement for silica flour in an asbestos-cement composition containing asbestos fibers, portland cement, and silica flour. The composition is shaped and cured to form the final thermal shock resistant product.
    Type: Grant
    Filed: September 6, 1974
    Date of Patent: January 20, 1976
    Assignee: Johns-Manville Corporation
    Inventor: Julie Chi-Sun Yang