Patents Represented by Attorney Charles W. Vanacek

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  • Carbon black-filled foam
    Patent number: 4795763
    Abstract: A closed cell, rigid, polymer foam containing as filler at least about 2 percent by weight of carbon black, based on the weight of the polymer in the foam, the carbon black being uniformly dispersed throughout the foam so that there is present in the cell walls of the foam an amount of carbon black which reduces the aged k-factor of the foam to below the aged k-factor of the corresponding unfilled foam.
    Type: Grant
    Filed: April 18, 1988
    Date of Patent: January 3, 1989
    Assignee: The Celotex Corporation
    Inventors: David G. Gluck, Thomas G. Soukup, William J. Moore