Patents by Inventor Kenneth James Wise

Kenneth James Wise 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).

  • Process for the preparation of discrete particles of calcium carbonate
    Patent number: 6294143
    Abstract: A product and a process for the preparation of discrete calcium carbonate particles that result from preparing an aqueous calcium carbonate slurry containing carbohydrates, carbonating the aqueous calcium carbonate slurry while maintaining the selected starting carbonation temperature. The product of the present invention is discrete particles of calcium carbonate which are especially useful in paints, plastics, paper coating, paper filling, and because of the purity level of the calcium carbonate particle may be used in cosmetics, pharmaceuticals and food applications.
    Type: Grant
    Filed: March 24, 1998
    Date of Patent: September 25, 2001
    Assignee: Minerals Technologies Inc.
    Inventors: Donald Richard Deutsch, Kenneth James Wise
  • Process for the preparation of discrete particles of calcium carbonate
    Patent number: 5741471
    Abstract: A process for the precipitation of discrete prismatic calcium carbonate particles by carbonation of aqueous calcium hydroxide containing a saccharide or polysaccharide or a saccaride or polysaccharide and a metal ion at temperatures of from about 8.degree. C. to about 64.degree. C. is disclosed. The resulting product has specific surface areas between about 10 m.sup.2 /g and about 120 m.sup.2 /g and is useful in paints, plastics, paper coating, paper filling, and pharmaceutical applications.
    Type: Grant
    Filed: December 5, 1995
    Date of Patent: April 21, 1998
    Assignee: Minerals Technologies Inc.
    Inventors: Donald Richard Deutsch, Kenneth James Wise