Patents by Inventor James Nathan Ashcraft

James Nathan Ashcraft 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).

  • Publication number: 20180057366
    Abstract: Systems and methods are presented for removing an ionic material from a fluid using a capture polymer that sequesters the ionic material and an anchor particle bearing a tethering polymer. The tethering polymer complexes with the capture polymer after the capture polymer has sequestered the ionic material, thereby affixing a complex of capture polymer and ionic material to the anchor particle to form a removable complex. The removable material can be segregated from the fluid via a removal system, thereby removing the ionic material from the fluid.
    Type: Application
    Filed: August 1, 2017
    Publication date: March 1, 2018
    Inventors: David S. Soane, James Nathan Ashcraft
  • Publication number: 20170101332
    Abstract: Disclosed herein are systems for removing particulate matter from a fluid, comprising a particle functionalized by attachment of at least one activating group or amine functional group, wherein the modified particle complexes with the particulate matter within the fluid to form a removable complex therein. The particulate matter has preferably been contacted, complexed or reacted with a tethering agent. The system is particularly advantageous to removing particulate matter from a fluid waste stream following mining or ore processing operations.
    Type: Application
    Filed: October 20, 2016
    Publication date: April 13, 2017
    Inventors: David S. Soane, William Ware, JR., Robert P. Mahoney, James Nathan Ashcraft