Patents by Inventor Cathleen Joyce Webb

Cathleen Joyce Webb 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).

  • Method and composition to reduce the amounts of arsenic in water
    Patent number: 7790653
    Abstract: The present invention relates to a method for removing arsenic in arsenic contaminated water, especially for small drinking water systems such as those used in individual homes, rural areas, and small communities, by simply contacting arsenic-contaminated water with an arsenic removal medium. The present invention also relates to the composition of the arsenic removal medium, which comprises particles of calcium carbonate minerals and magnesium carbonate aggregates.
    Type: Grant
    Filed: November 21, 2005
    Date of Patent: September 7, 2010
    Assignee: South Dakota School of Mines & Technology
    Inventors: Cathleen Joyce Webb, Arden Duane Davis, David John Dixon