Patents by Inventor Patrick D. Canavan

Patrick D. Canavan 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).

  • Paper coating kaolin pigments their preparation and use
    Patent number: 5411587
    Abstract: Paper coating pigments comprising mechanically delaminated kaolin particles. The pigments possess the opacification, smoothness and printability advantages of conventional delaminated kaolin pigments but have desirably low viscosity and gloss not characteristic of conventional delaminated kaolin pigments. Crude kaolins of specified physical characteristics for production of these pigments by controlled delamination.
    Type: Grant
    Filed: April 12, 1994
    Date of Patent: May 2, 1995
    Assignee: Engelhard Corporation
    Inventors: Mitchell J. Willis, Patrick D. Canavan, Fred M. Allen, Jordan K. Lampert
  • Paper coating kaolin pigments there preparation and use
    Patent number: 5169443
    Abstract: Paper coating pigments comprising mechanically delaminated kaolin particles. The pigments possess the opacification, smoothness and printability advantages of conventional delaminated kaolin pigments but have desirably low viscosity and gloss not characteristic of conventional delaminated kaolin pigments.
    Type: Grant
    Filed: November 13, 1991
    Date of Patent: December 8, 1992
    Assignee: Engelhard Corporation
    Inventors: Mitchell J. Willis, Patrick D. Canavan