Patents by Inventor Lance S. Mitchell

Lance S. Mitchell 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).

  • Pigment extenders
    Patent number: 5486233
    Abstract: A pigment composition includes a pigment extender which optionally contains a pigment, and further includes a non-hydrogenated phospholipid material, such as non-hydrogenated lecithin, and a surface modifying agent. Suitable modifying agents are selected from fatty acids, fatty acid esters or fatty acid triglycerides, silicones and mixtures thereof.
    Type: Grant
    Filed: October 28, 1993
    Date of Patent: January 23, 1996
    Assignee: Western Mining Corporation Limited
    Inventors: Lance S. Mitchell, Mary Ann Nordhauser, Justin M. Willis