Patents Assigned to Suh Kyung Suk
  • Portland cement, process for preparing same, and compositions containing same
    Patent number: 4537633
    Abstract: An improved Portland cement composition and process for producing same comprising dry powder of Portland cement and very fine particles of carbon black, wherein the dry powder of Portland cement is coated with an asphalt film prior to the addition of the carbon black.
    Type: Grant
    Filed: June 10, 1983
    Date of Patent: August 27, 1985
    Assignee: Suh Kyung Suk
    Inventor: Won P. Hong