Patents by Inventor Mark L. MacKenzie

Mark L. MacKenzie 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).

  • Cementitious composite material with vacuum integrity at elevated temperatures
    Patent number: 4891071
    Abstract: The temperatures at which the cementitious composite materials described in U.S. Pat. No. 4,482,385 can be used as tool or mold materials are extended by a treatment which comprises heating said composite materials to a temperature sufficient to expel free and adsorbed water from the concrete portion of the cementitious composite and thereafter refilling the resulting pores with an organic monomer or prepolymer and then crosslinking said impregnant to form an organic polymeric network in the inorganic composite material.
    Type: Grant
    Filed: November 21, 1984
    Date of Patent: January 2, 1990
    Assignee: Cemcom Corporation
    Inventors: Randall P. Bright, Sean Wise, Mark L. MacKenzie
  • Thermal treatment of concretes containing stainless steel
    Patent number: 4599211
    Abstract: The strength of the stainless steel containing cementitious composite material of U.S. Pat. No. 4,482,385 is improved by curing it according to a specific schedule which includes the steps of curing in a mold, steam curing after demolding, slow drying and dry thermal curing.
    Type: Grant
    Filed: November 21, 1984
    Date of Patent: July 8, 1986
    Assignee: Research One Limited Partnership
    Inventors: Sean Wise, Mark L. MacKenzie