Patents by Inventor Soren B. Larsen

Soren B. Larsen 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 composition and methods for producing same
    Patent number: 5362321
    Abstract: A cement composition comprising 1) a cement containing water-soluble chromate and 2) at least one manganese(II) compound in an amount sufficient to reduce the amount of water-soluble chromate to at the most 2 mg of Cr(VI) per kg of the cement, the determination of the chromate content being carried out by elution of the composition in water for 15 minutes at a water/cement ratio 1, filtration and determination of the chromate content in the filtrate.
    Type: Grant
    Filed: November 12, 1992
    Date of Patent: November 8, 1994
    Assignee: Aalborg Portland A/S
    Inventor: Soren B. Larsen