Patents by Inventor Paul R. Blankenhorn

Paul R. Blankenhorn 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).

  • Process for impregnating concrete with polymers
    Patent number: 4109033
    Abstract: A process for drying concrete to the appropriate moisture content for proper impregnation of the concrete with a polymer or a monomer for in situ polymerization. This is accomplished by heating the concrete until its temperature at the desired depth of polymer penetration is at least about 230.degree. F. In another embodiment of the invention the dried concrete is impregnated with a monomer composition capable of polymerization and is polymerized within the concrete.
    Type: Grant
    Filed: February 14, 1977
    Date of Patent: August 22, 1978
    Inventors: Paul R. Blankenhorn, Philip D. Cady, Donald E. Kline, Richard E. Weyers
  • Resin impregnation of siliceous materials
    Patent number: 3980604
    Abstract: A process for improving the physical properties and chemical resistance of concrete, brick and like materials by impregnation with an epoxy resin and comprising the steps ofA. drying the material to a moisture level below about 5% by weight,B. impregnating the dried material under conditions of vacuum and/or pressure with an epoxy resin composition comprising a mixture of an epoxy resin, from about 10 to about 50 parts per one hundred parts of resin of a reactive diluent for epoxy resins, and a curing agent having a substantial pot life, andC. curing the resin impregnated within the material.The invention also embodies the epoxy resin-impregnated material so obtained.
    Type: Grant
    Filed: June 8, 1973
    Date of Patent: September 14, 1976
    Inventors: David A. Whiting, Paul R. Blankenhorn, Donald E. Kline