Patents by Inventor Vaughn R. Liljenquist

Vaughn R. Liljenquist 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).

  • Cement compositions and admixtures therefore
    Patent number: 6893496
    Abstract: Blended cement compositions for mixture with aggregate and water to prepare cementitious products. Such blended cement compositions contain cement, calcined diatomaceous earth, calcined kaolin, fiberous material and reactive vinyl acetate co-polymers, with or without talc and/or bentonite or their functional equivalents. Admixtures for blending into cement to create such blended cements or their read-mix equivalents contain calcined kaolin, calcined diatomaceous earth, fiberous material and reactive vinyl acetate co-polymers, with or without talc and/or bentonite or their functional equivalents.
    Type: Grant
    Filed: December 16, 2002
    Date of Patent: May 17, 2005
    Assignee: Universal White Cement Company, Inc.
    Inventor: Vaughn R. Liljenquist