Patents by Inventor Sean Dingman

Sean Dingman 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 of brightening ground calcium carbonate
    Patent number: 10590003
    Abstract: A chemical processing method to increase the brightness of a naturally sourced GCC. The process described herein employs a persulfate under certain heating and stirring conditions to effect a brightness change which can be on the order of about 8 points on the GE brightness scale and can move a GCC which is under a GE level of 80 to above a GE level of 80.
    Type: Grant
    Filed: August 24, 2018
    Date of Patent: March 17, 2020
    Assignee: Mississippi Lime Company
    Inventors: Sean Dingman, Kory Mueller