Patents by Inventor Willem van Loo

Willem 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: 5084102
    Abstract: A cement based on blast-furnace slag and fly ash, characterized in that the cement is a homogeneous dry particulate mixture in ready-to-use form, which comprises blast-furnace slag having a specific surface area of 500-650 m.sup.2 /kg and fly ash in a weight ratio in the range of 20/80-60/40, 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).
    Type: Grant
    Filed: December 22, 1989
    Date of Patent: January 28, 1992
    Assignee: Eerste Nederlandse Cement Industrie (ENCI) N. V.
    Inventors: Seratius J. P. Brouns, Willem van Loo