Patents by Inventor Francis K. Didden

Francis K. 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).

  • Patent number: 10357782
    Abstract: Apparatus, such as a flotation separation device, features a flotation cell or column configured to receive a mixture of water, valuable material and unwanted material; receive polymer-based materials, including polymer bubbles or beads, configured to attach to the valuable material in the mixture; and provide enriched polymer-based materials, including enriched polymer bubbles or beads, having the valuable material attached thereon.
    Type: Grant
    Filed: May 25, 2012
    Date of Patent: July 23, 2019
    Assignee: CiDRA Corporate Services LLC
    Inventors: Paul J. Rothman, Mark R. Fernald, Francis K. Didden, Christian V. O'Keefe, Alan D. Kersey, Douglas H. Adamson
  • Publication number: 20190201914
    Abstract: A synthetic bead for use in mineral separation is described. The synthetic bead has a surface made of a synthetic material such as polymer and the synthetic material is functionalized with molecules having a functional group for attaching mineral particles to the surface in a separation process. The synthetic beads can be placed in flotation cell containing a mixture of water, valuable material and unwanted material or in a pipeline where the mixture is transported from one location to another. The enriched synthetic beads carrying the mineral particles are separated from the unwanted materials in the mixture. The mineral particles are then released from the synthetic beads by means of low pH treatment, ultrasonic agitation, thermal or electromagnetic treatment.
    Type: Application
    Filed: April 12, 2018
    Publication date: July 4, 2019
    Inventors: Paul J. ROTHMAN, Mark R. FERNALD, Francis K. DIDDEN, Christian V. O'KEEFE, Douglas H. ADAMSON
  • Patent number: 10245597
    Abstract: Apparatus is provided featuring a first and second cells. The first cell receives an ore slurry having mineral particles of interest, receives unexpanded polymer microspheres comprising a surface having mineral collector chemistry attached thereto with molecules for attaching the mineral particles of interest, causes the unexpanded polymer microspheres to expand substantially in volume into expanded polymer microspheres having a substantially increased sphere surface area, and provides an expanded polymer microsphere foam layer comprising the expanded polymer microspheres with attached mineral particles of interest. The second cell receives the expanded polymer microsphere foam layer, and causes the expanded polymer microspheres to collapse substantially in volume into collapsed polymer microspheres having a substantially reduced sphere surface area that results in a mechanical shearing off of the attached mineral particles of interest.
    Type: Grant
    Filed: April 1, 2013
    Date of Patent: April 2, 2019
    Assignee: CiDRA Corporate Services Inc.
    Inventors: Francis K. Didden, Alan D. Kersey, Michael A. Davis, Paul J. Rothman, Mark R. Fernald, Christian V. O'Keefe, Douglas H. Adamson
  • Patent number: 10099251
    Abstract: The present invention provides apparatus, including a pigging tool, that comprises a spraying mechanism configured to move along an inner surface of a pipeline, including a slurry transport pipeline in a minable oilsands facility or plant, and to spray a coating on the inner surface of the pipeline; and a curing source, including an ultraviolet (UV) light source, a microwave source or an RF source, configured to cure the coating sprayed on the inner surface of the pipeline in situ as the spray mechanism moves along the inner surface of the pipeline.
    Type: Grant
    Filed: May 1, 2017
    Date of Patent: October 16, 2018
    Assignee: CiDRA Corporate Services Inc.
    Inventors: Alan D. Kersey, Mark R. Fernald, John Viega, Francis K. Didden
  • Patent number: 10060570
    Abstract: Apparatus, including a pipeline, featuring at least one pipe liner or coating configured to line or coat a pipe for receiving a process fluid flow, configured with at least one chemical taggant or tracer, and also configured to respond to the process fluid flow, and provide an indication about a degree of liner or coating wear or a location of wear in the pipe. The apparatus may also include the pipe having the at least one pipe liner or coating configured therein.
    Type: Grant
    Filed: January 9, 2014
    Date of Patent: August 28, 2018
    Assignee: CiDRA CORPORATE SERVICES, INC.
    Inventors: Alan D. Kersey, Michael Puig, Francis K. Didden, Douglas H. Adamson
  • Publication number: 20180200730
    Abstract: Apparatus for use in, or forming part of, a separation process to be implemented in separation processor technology, the apparatus comprising synthetic bubbles or beads configured with a polymer or polymer-based material functionalized to attach to a valuable material in a mixture so as to form an enriched synthetic bubbles or beads having the valuable material attached thereto, and also configured to be separated from the mixture based at least partly on a difference in a physical property between the enriched synthetic bubbles or beads having the valuable material attached thereto and the mixture.
    Type: Application
    Filed: October 26, 2017
    Publication date: July 19, 2018
    Inventors: Paul J. ROTHMAN, Mark R. FERNALD, Francis K. DIDDEN, Christian V. O'KEEFE, Alan D. KERSEY, Douglas H. ADAMSON
  • Patent number: 9981272
    Abstract: Apparatus featuring synthetic bubbles or beads and a flotation stage. The synthetic bubbles or beads are configured with a polymer or polymer-based material functionalized to attach to the valuable material in a mixture to form at least some enriched synthetic bubbles or beads having the valuable material attached thereto, and also configured to be transported through the mixture based at least partly on a characteristic of the synthetic bubbles or beads. The flotation stage has the mixture containing valuable material, and is configured to receive the synthetic bubbles or beads and to provide the at least some enriched synthetic bubbles or beads having the valuable material attached thereto based at least partly the characteristic of the synthetic bubbles or beads.
    Type: Grant
    Filed: May 25, 2012
    Date of Patent: May 29, 2018
    Assignee: CiDRA CORPORATE SERVICES, INC.
    Inventors: Paul J. Rothman, Mark R. Fernald, Francis K. Didden, Douglas H. Adamson
  • Patent number: 9981271
    Abstract: A synthetic bead for use in mineral separation is described. The synthetic bead has a surface made of a synthetic material such as polymer and the synthetic material is functionalized with molecules having a functional group for attaching mineral particles to the surface in a separation process. The synthetic beads can be placed in flotation cell containing a mixture of water, valuable material and unwanted material or in a pipeline where the mixture is transported from one location to another. The enriched synthetic beads carrying the mineral particles are separated from the unwanted materials in the mixture. The mineral particles are then released from the synthetic beads by means of low pH treatment, ultrasonic agitation, thermal or electromagnetic treatment.
    Type: Grant
    Filed: May 25, 2012
    Date of Patent: May 29, 2018
    Assignee: CiDRA CORPORATE SERVICES LLC
    Inventors: Paul J. Rothman, Mark R. Fernald, Francis K. Didden, Christian V. O'keefe, Douglas H. Adamson
  • Patent number: 9943860
    Abstract: An apparatus and method for collecting mineral particles in the tailings is disclosed. The apparatus may take the form of a filter, a conveyor belt, a collection plate or an impeller configured to contact with tailings of a flotation process, before and/or after the tailings are discharged into a pond. The filter, conveyor belt, collection plate or impeller has a collection area or surface made of, or coated with, a synthetic material having a functional group, e.g., having an ionizing bond to attract the mineral particles of interest. Alternatively, the synthetic material has hydrophobic molecules to render the collection area hydrophobic. When the mineral particles of interest in the tailings are combined with collector molecules, the mineral particles of interest may also become hydrophobic. The hydrophobic mineral particles of interest are attracted to the hydrophobic collection area or surface.
    Type: Grant
    Filed: May 25, 2012
    Date of Patent: April 17, 2018
    Assignee: CiDRA Corporate Services Inc.
    Inventors: Paul J. Rothman, Mark R. Fernald, Francis K. Didden, Christian V. O'Keefe, Alan D. Kersey, Douglas H. Adamson
  • Publication number: 20170361333
    Abstract: A transportable modular system for enhanced minerals recovery from tailings lines and deposits, features two transportable mineral recovery modules (TMRM), each TMRM for transporting as a truck mounted module to a remote site as an independently-operable mineral recovery module, each TMRM to couple to another TMRM on-site at the remote site and used together to provide enhanced minerals recovery. One TMRM having a central engineered polymer mineral recovery module that receives tailings fluid having a mineral particle of interest, processes the tailings fluid using an engineered polymer configuration, and provides recovered mineral processing fluids having the mineral particle of interest and a tailings disposal fluid. One other TMRM is selected from a group of TMRMs that includes another central engineered polymer mineral recovery module, a tailings fluid management module, an additive/chemical treatment polymer management module, a tailings disposal module and a recovery mineral processing module.
    Type: Application
    Filed: December 17, 2015
    Publication date: December 21, 2017
    Inventors: Francis K. DIDDEN, Alan D. KERSEY, Mark R. FERNALD, Paul J. ROTHMAN
  • Patent number: 9827574
    Abstract: Apparatus for use in, or forming part of, a separation process to be implemented in separation processor technology, the apparatus comprising synthetic bubbles or beads configured with a polymer or polymer-based material functionalized to attach to a valuable material in a mixture so as to form an enriched synthetic bubbles or beads having the valuable material attached thereto, and also configured to be separated from the mixture based at least partly on a difference in a physical property between the enriched synthetic bubbles or beads having the valuable material attached thereto and the mixture.
    Type: Grant
    Filed: May 25, 2012
    Date of Patent: November 28, 2017
    Assignee: CiDRA CORPORATE SERVICES, INC.
    Inventors: Paul J. Rothman, Mark R. Fernald, Francis K. Didden, Christian V. O'Keefe, Alan D. Kersey, Douglas H. Adamson
  • Publication number: 20170234476
    Abstract: The present invention provides apparatus, including a pigging tool, that comprises a spraying mechanism configured to move along an inner surface of a pipeline, including a slurry transport pipeline in a minable oilsands facility or plant, and to spray a coating on the inner surface of the pipeline; and a curing source, including an ultraviolet (UV) light source, a microwave source or an RF source, configured to cure the coating sprayed on the inner surface of the pipeline in situ as the spray mechanism moves along the inner surface of the pipeline.
    Type: Application
    Filed: May 1, 2017
    Publication date: August 17, 2017
    Inventors: Alan D. KERSEY, Mark R. FERNALD, John VIEGA, Francis K. Didden
  • Patent number: 9731221
    Abstract: An apparatus for collecting mineral particles in a slurry or the tailings is disclosed, including a collection area or tank having one or more collection surfaces configured to contact with a mixture having water and valuable material, the valuable material having a plurality of mineral particles of interest; and a synthetic material provided at least on the one or more collection surfaces, the synthetic material having plurality of molecules with a siloxane functional group configured to attract the mineral particles of interest to the collection surfaces. The one or more collection surfaces includes a conveyor belt that is driven through the collection area or tank, through a release area or tank, back through the collection area or tank. The mixture includes a pulp slurry having ground ore with mineral particles of interest forming part thereof, including mineral particles of interest of about 500 microns or larger.
    Type: Grant
    Filed: May 13, 2014
    Date of Patent: August 15, 2017
    Assignee: CiDRA CORPORATE SERVICES, INC.
    Inventors: Paul J. Rothman, Mark R. Fernald, Francis K. Didden, Douglas H. Adamson
  • Patent number: 9352335
    Abstract: A synthetic bead for use in mineral separation is described. The synthetic bead has a surface made of a synthetic material such as polymer and the synthetic material is functionalized with molecules having a functional group for attracting mineral particles to the surface in a separation process. The synthetic beads can be placed in flotation cell containing a mixture of water, valuable material and unwanted material or in a pipeline where the mixture is transported from one location to another. The enriched synthetic beads carrying the mineral particles are separated from the unwanted materials in the mixture. The mineral particles are then released from the synthetic beads by means of low pH treatment, ultrasonic agitation, thermal or electromagnetic treatment.
    Type: Grant
    Filed: May 25, 2012
    Date of Patent: May 31, 2016
    Assignee: CiDRA Corporate Services Inc.
    Inventors: Paul J. Rothman, Mark R. Fernald, Francis K. Didden, Christian V. O'Keefe, Alan D. Kersey, Douglas H. Adamson
  • Patent number: 9327294
    Abstract: A synthetic bead for use in mineral separation is described. The synthetic bead has a surface made of or coated with a synthetic material such as a polymer that is naturally hydrophobic or a polymer that is hydrophobically modified. The synthetic bead can be made of glass having a coating or polysiloxane. The synthetic beads can be placed in flotation cell containing a mixture of water, collector molecules, valuable material and unwanted material or in a pipeline where the mixture is transported from one location to another. The collector chemical can be xanthates. The enriched synthetic beads carrying the mineral particles are separated from the unwanted materials in the mixture. The mineral particles are then released from the synthetic beads by means of low pH treatment, ultrasonic agitation, thermal or electromagnetic treatment.
    Type: Grant
    Filed: May 25, 2012
    Date of Patent: May 3, 2016
    Assignee: CiDRA Corporate Services Inc.
    Inventors: Paul J. Rothman, Mark R. Fernald, Francis K. Didden, Christian V. O'Keefe, Alan D. Kersey, Douglas H. Adamson
  • Patent number: 9302270
    Abstract: An apparatus for collecting mineral particles in a slurry or the tailings is disclosed. The apparatus may take the form of a filter, a conveyor belt or an impeller to be used in a processor to collect mineral particles in the slurry, or in a tailings pond to collect mineral particles in the tailings. The filter, conveyor belt or impeller has a collection area made of or coated with a synthetic material having a functional group, either anionic or cationic to attach to the mineral particles. Alternatively, the synthetic material has hydrophobic molecules to render the collection area hydrophobic. When the mineral particles in the slurry or tailings are combined with collector molecules, the mineral particles also become hydrophobic. The hydrophobic mineral particles are attracted to the hydrophobic collection area. The filter, conveyor belt and impeller may have a plurality of passage ways in order to increase the contacting surfaces.
    Type: Grant
    Filed: May 25, 2012
    Date of Patent: April 5, 2016
    Assignee: CiDRA Corporate Services Inc.
    Inventors: Paul J. Rothman, Mark R. Fernald, Francis K. Didden, Douglas H. Adamson
  • Publication number: 20160067631
    Abstract: An apparatus for collecting mineral particles in a slurry or the tailings is disclosed, including a collection area or tank having one or more collection surfaces configured to contact with a mixture having water and valuable material, the valuable material having a plurality of mineral particles of interest; and a synthetic material provided at least on the one or more collection surfaces, the synthetic material having plurality of molecules with a siloxane functional group configured to attract the mineral particles of interest to the collection surfaces. The one or more collection surfaces includes a conveyor belt that is driven through the collection area or tank, through a release area or tank, back through the collection area or tank. The mixture includes a pulp slurry having ground ore with mineral particles of interest forming part thereof, including mineral particles of interest of about 500 microns or larger.
    Type: Application
    Filed: May 13, 2014
    Publication date: March 10, 2016
    Inventors: Paul J. ROTHMAN, Mark R. FERNALD, Francis K. DIDDEN, Douglas H. ADAMSON
  • Publication number: 20150345688
    Abstract: Apparatus, including a pipeline, featuring at least one pipe liner or coating configured to line or coat a pipe for receiving a process fluid flow, configured with at least one chemical taggant or tracer, and also configured to respond to the process fluid flow, and provide an indication about a degree of liner or coating wear or a location of wear in the pipe. The apparatus may also include the pipe having the at least one pipe liner or coating configured therein.
    Type: Application
    Filed: January 9, 2014
    Publication date: December 3, 2015
    Applicant: CIDRA Corporate Services Inc.
    Inventors: Alan D. KERSEY, Michael PUIG, Francis K. DIDDEN, Douglas H. ADAMSON
  • Publication number: 20150209799
    Abstract: An apparatus and method for collecting mineral particles in the tailings is disclosed. The apparatus may take the form of a filter, a conveyor belt, a collection plate or an impeller configured to contact with tailings of a flotation process, before and/or after the tailings are discharged into a pond. The filter, conveyor belt, collection plate or impeller has a collection area or surface made of, or coated with, a synthetic material having a functional group, e.g., having an ionizing bond to attract the mineral particles of interest. Alternatively, the synthetic material has hydrophobic molecules to render the collection area hydrophobic. When the mineral particles of interest in the tailings are combined with collector molecules, the mineral particles of interest may also become hydrophobic. The hydrophobic mineral particles of interest are attracted to the hydrophobic collection area or surface.
    Type: Application
    Filed: May 25, 2012
    Publication date: July 30, 2015
    Applicant: CIDRA CORPORATE SERVICES INC.
    Inventors: Paul J. Rothman, Mark R. Fernald, Francis K. Didden, Christian V. O'Keefe, Alan D. Kersey, Douglas H. Adamson
  • Publication number: 20150140228
    Abstract: The present invention provides apparatus, including a pigging tool, that comprises a spraying mechanism configured to move along an inner surface of a pipeline, including a slurry transport pipeline in a minable oilsands facility or plant, and to spray a coating on the inner surface of the pipeline; and a curing source, including an ultraviolet (UV) light source, a microwave source or an RF source, configured to cure the coating sprayed on the inner surface of the pipeline in situ as the spray mechanism moves along the inner surface of the pipeline.
    Type: Application
    Filed: October 18, 2012
    Publication date: May 21, 2015
    Applicant: CiDRA CORPORATE SERVICES INC.
    Inventors: Alan D. Kersey, Mark R. Fernald, John Viega, Francis K. Didden