Patents by Inventor W. van Loo

W. van Loo 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, method of preparing such cement and method of making products using such cement
    Patent number: 5482549
    Abstract: A homogeneous dry particulate cement mixture in ready-to-use form is provided, which comprises ground blast-furnace slag having a specific surface area of 500-750 m.sup.2 /kg and ground fly ash having a specific surface area of 500-750 m.sup.2 /kg, in a weight ratio in the range of 20/80-70/30, and further comprises the following components in the amounts indicated, calculated on the total mixture: at least 2% by weight of portland cement clinker and 2-12% by weight of sodium silicate (calculated as Na.sub.2 O+SiO.sub.2). When processed, the cement mixture yields a mortar or a concrete having improved strength properties as well as a good resistance against an acidic environment.
    Type: Grant
    Filed: April 4, 1994
    Date of Patent: January 9, 1996
    Assignee: ENCI Nederland B.V.
    Inventors: J. Blaakmeer, W. van Loo, P. R. M. Meekels