Patents Assigned to Vontech International Corporation
  • Interground fiber cement
    Patent number: 5298071
    Abstract: A fiber-hydratable cement composition comprising a uniform dispersion of from 0.0001 to 10 volume percent interground fiber in hydratable cement powder is prepared by introducing fiber precursors and cement clinker to a grinding mill and grinding the mixture until the clinker has been reduced to a fine powder. The fiber can be steel, alkaline resistant glass, ceramic, carbon or organic polymer, and preferably are steel, polyolefin or mixtures thereof.
    Type: Grant
    Filed: July 16, 1993
    Date of Patent: March 29, 1994
    Assignee: Vontech International Corporation
    Inventor: Gary L. Vondran