Patents by Inventor Francis DIDDEN

Francis DIDDEN 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).

  • OPEN CELL OR RETICULATED FOAM HAVING 3-DIMENSIONAL OPEN-NETWORK STRUCTURE MADE OF A HYDROPHOBIC MATERIAL FOR SELECTIVE SEPARATION OF MINERAL PARTICLES
    Publication number: 20210379603
    Abstract: An engineered collection medium for use in mineral separation is described. The engineered collection medium has a solid phase body configured with a three-dimensional open-cell structure like foam or sponge to provide collection surfaces. The three-dimensional surface structure is made of a hydrophobic material which is a reaction product of isocyanate and polyol promotes the attraction of mineral particles to the collection surfaces as a hydrophobic foam. The hydrophobic foam can be in the form of a cube, sphere, or sheet and can be used in a filter or conveyor belt in a processor.
    Type: Application
    Filed: February 7, 2019
    Publication date: December 9, 2021
    Inventors: Paul J. ROTHMAN, Mark R. FERNALD, Francis DIDDEN, Christian V. O'KEEFE, Douglas H. ADAMSON, Paul DOLAN, Timothy J. BAILEY, Michael Stephen RYAN, Weiguo HUANG, Kevin Rodney LASSILA, Michael D. COPPOLA, Allison K. GREENE
  • Recovery media for mineral processing
    Patent number: 10835905
    Abstract: An engineered collection medium for use in mineral separation is described. The engineered collection medium has a solid phase body configured with a three-dimensional open-cell structure like foam or sponge to provide collection surfaces. The surfaces are functionalized with a hydrophobic chemical having molecules with a functional group for attaching mineral particles to the collection surfaces. The engineered collection medium can be a foam block, a filter or conveyor belt to be placed in a slurry to collect mineral particles in the slurry. The engineered collection medium carrying the mineral particles is provided to a release apparatus where the mineral particles can be released by using mechanical agitation, sonic agitation and so forth.
    Type: Grant
    Filed: January 9, 2017
    Date of Patent: November 17, 2020
    Assignee: CIDRA CORPORATE SERVICES INC.
    Inventors: Paul J. Rothman, Mark R. Fernald, Francis Didden, Christian V. O'Keefe, Douglas H. Adamson, Paul Dolan, Timothy J. Bailey, Michael Ryan
  • RECOVERY MEDIA FOR MINERAL PROCESSING, USING OPEN CELL OR RETICULATED FOAM HAVING 3-DIMENSIONAL FUNCTIONALIZED OPEN-NETWORK STRUCTURE FOR SELECTIVE SEPARATION OF MINERAL PARTICLES IN AN AQUEOUS SYSTEM
    Publication number: 20170232451
    Abstract: An engineered collection medium for use in mineral separation is described. The engineered collection medium has a solid phase body configured with a three-dimensional open-cell structure like foam or sponge to provide collection surfaces. The surfaces are functionalized with a hydrophobic chemical having molecules with a functional group for attaching mineral particles to the collection surfaces. The engineered collection medium can be a foam block, a filter or conveyor belt to be placed in a slurry to collect mineral particles in the slurry. The engineered collection medium carrying the mineral particles is provided to a release apparatus where the mineral particles can be released by using mechanical agitation, sonic agitation and so forth.
    Type: Application
    Filed: January 9, 2017
    Publication date: August 17, 2017
    Inventors: Paul J. ROTHMAN, Mark R. FERNALD, Francis DIDDEN, Christian V. O'KEEFE, Douglas H. ADAMSON, Paul DOLAN, Timothy J. BAILEY, Michael RYAN