Patents by Inventor Andrew R. WELFORD

Andrew R. WELFORD 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).

  • White functional additives derived from filtration spent cake containing diatomite
    Patent number: 11565940
    Abstract: This disclosure concerns flux-calcined products manufactured from filtration waste streams, and methods for manufacturing the same. In particular, it concerns functional additives produced from spent cake comprising diatomite filtration media which are suitable for use in paints, plastic films and elastomers for control of optical and surface properties, and processes which are suitable for manufacture of such products. It further concerns the recovery of energy from spent cakes during the regeneration process.
    Type: Grant
    Filed: August 4, 2017
    Date of Patent: January 31, 2023
    Assignee: EP Minerals, LLC
    Inventors: Scott Kevin Palm, Peter E. Lenz, Andrew R. Welford, George A. Nyamekye, Kara Linn Evanoff
  • WHITE FUNCTIONAL ADDITIVES DERIVED FROM FILTRATION SPENT CAKE CONTAINING DIATOMITE
    Publication number: 20200339428
    Abstract: This disclosure concerns flux-calcined products manufactured from filtration waste streams, and methods for manufacturing the same. In particular, it concerns functional additives produced from spent cake comprising diatomite filtration media which are suitable for use in paints, plastic films and elastomers for control of optical and surface properties, and processes which are suitable for manufacture of such products. It further concerns the recovery of energy from spent cakes during the regeneration process.
    Type: Application
    Filed: August 4, 2017
    Publication date: October 29, 2020
    Applicant: EP Minerals, LLC
    Inventors: Scott Kevin PALM, Peter E. LENZ, Andrew R. WELFORD, George A. NYAMEKYE, Kara Linn EVANOFF