Patents by Inventor Rikkert J. Vos

Rikkert J. Vos 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).

  • Treatment process for contaminated waste
    Patent number: 5898093
    Abstract: A process for treating contaminated waste to stabilize environmentally harmful heavy metal. The contaminated waste is contacted with a mixture of (i) inorganic sulfide, (ii) calcium phosphate to prevent oxidation of the sulfide and (iii) calcium carbonate, the last acting as a base. Water is added to enhance mass transfer during the mixing. The calcium carbonate may be mixed with calcium oxide, to provide an additional base.
    Type: Grant
    Filed: March 25, 1997
    Date of Patent: April 27, 1999
    Assignee: Solucorp Industries, Ltd.
    Inventor: Rikkert J. Vos