Patents by Inventor Salvatore J. Grisaffe

Salvatore J. Grisaffe 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).

  • Fused silicide coatings containing discrete particles for protecting niobium alloys
    Patent number: 3931447
    Abstract: Fused silicide coatings for protecting niobium alloy substrates are modified by providing dispersed nucleation sites in the form of discrete particles in the coating. The discrete particles have a thermal expansion coefficient lower than that of the fused silicide material. This alters the microstructure and reduces the thermal expansion coefficient of the coating so as to minimize the number of tensile cracks.
    Type: Grant
    Filed: May 4, 1973
    Date of Patent: January 6, 1976
    Assignee: The United States of America as represented by the United States National Aeronautics and Space Administration
    Inventors: Salvatore J. Grisaffe, Stanley R. Levine