Patents by Inventor Vincent E. Chirico

Vincent E. Chirico 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).

  • Measurement of carbon black dispersion
    Patent number: 4220042
    Abstract: A method is disclosed for determining the dispersion of carbon black in elastomeric slabs by cutting a slab to form a planar surface and moving a height measuring transducer stylus over the planar surface. The transducer stylus provides an output current at a voltage which varies in correspondence to the relative height of roughness peaks on the planar surface. Accordingly, the size of the peaks determines the size of carbon black agglomerates and the frequency of peaks for a predetermined range of height is determinative of percent dispersion of the carbon black.
    Type: Grant
    Filed: March 26, 1979
    Date of Patent: September 2, 1980
    Assignee: Columbian Chemicals Company
    Inventors: Paul C. Vegvari, William M. Hess, Vincent E. Chirico