Patents by Inventor Willem P. C. Duyvesteyn

Willem P. C. Duyvesteyn 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: 20200001407
    Abstract: A method for fabricating an article from an aluminum alloy is provided. The method includes providing an aluminum alloy containing at least 0.04 wt % Sc, at least 0.5 wt % Mn, at least 0.5 wt % Zr, at least 0.05 wt % Mg, and at least 90 wt % Al; casting the alloy into a sheet; subjecting the cast alloy to a thermal cycle which includes raising the temperature of the alloy along a first temperature gradient, holding the temperature of the alloy at a temperature T for a period of time t, and reducing the temperature of the alloy along a second temperature gradient; and utilizing the sheet in a brazing operation.
    Type: Application
    Filed: June 26, 2019
    Publication date: January 2, 2020
    Inventor: Willem P.C. Duyvesteyn
  • Patent number: 10450634
    Abstract: A method (101) is provided for making a scandium-containing alloy. The method includes providing a molten metal (103), and mixing the molten metal with a scandium-containing precursor (113) which undergoes thermal decomposition at the temperature of the molten metal to produce scandium oxide, thereby producing a scandium-containing alloy.
    Type: Grant
    Filed: July 31, 2017
    Date of Patent: October 22, 2019
    Assignee: Scandium International Mining Corporation
    Inventor: Willem P. C. Duyvesteyn
  • Patent number: 10378085
    Abstract: A method is provided for recovering scandium values from scandium-bearing ores. The method includes providing a scandium-bearing ore; subjecting the scandium-bearing ore to atmospheric pressure acid leaching with sulfuric acid, thereby producing a first, scandium-bearing solution containing ferric (Fe3+) ions; subjecting the first solution to hydrothermal processing, thereby precipitating from the first solution a material selected from the group consisting of hematite and basic iron sulfates and generating a second, scandium-bearing solution; and recovering scandium values from the second solution.
    Type: Grant
    Filed: May 9, 2018
    Date of Patent: August 13, 2019
    Assignee: Scandium International Mining Corp.
    Inventor: Willem P. C. Duyvesteyn
  • Publication number: 20190161827
    Abstract: A method is provided for extracting scandium values from an ore feedstock. The method includes providing a feedstock of a copper ore which contains scandium values; extracting scandium values from the ore with a leaching solution, thereby obtaining a pregnant leachate; contacting the pregnant leachate with an ion exchange resin, thereby extracting scandium values from the pregnant leachate and forming a loaded extractant; stripping the scandium values from the loaded extractant with a stripping solution, thereby forming a loaded stripping solution; and precipitating the scandium values from the loaded stripping solution as a scandium-containing precipitate.
    Type: Application
    Filed: November 21, 2018
    Publication date: May 30, 2019
    Inventor: Willem P.C. Duyvesteyn
  • Patent number: 10260127
    Abstract: A method for isolating scandium values is provided. The method includes providing a scandium-bearing ore; subjecting the scandium-bearing ore to an acid leaching process, thereby obtaining a leachate, wherein the pH of the leachate is less than 1.
    Type: Grant
    Filed: April 26, 2018
    Date of Patent: April 16, 2019
    Assignee: Scandium International Mining Corporation
    Inventor: Willem P. C. Duyvesteyn
  • Publication number: 20180312940
    Abstract: A method for isolating scandium values is provided. The method includes providing a scandium-bearing ore; subjecting the scandium-bearing ore to an acid leaching process, thereby obtaining a leachate, wherein the pH of the leachate is less than 1.
    Type: Application
    Filed: April 26, 2018
    Publication date: November 1, 2018
    Applicant: Scandium International Mining Corp.
    Inventor: Willem P.C. Duyvesteyn
  • Publication number: 20180282840
    Abstract: A method is provided for recovering scandium values from scandium-bearing ores. The method includes providing a scandium-bearing ore; subjecting the scandium-bearing ore to atmospheric pressure acid leaching with sulfuric acid, thereby producing a first, scandium-bearing solution containing ferric (Fe3+) ions; subjecting the first solution to hydrothermal processing, thereby precipitating from the first solution a material selected from the group consisting of hematite and basic iron sulfates and generating a second, scandium-bearing solution; and recovering scandium values from the second solution.
    Type: Application
    Filed: May 9, 2018
    Publication date: October 4, 2018
    Inventor: Willem P.C. Duyvesteyn
  • Patent number: 9982326
    Abstract: A method for isolating scandium values is provided. The method includes extracting scandium values from a leachate with an organic solvent, thereby obtaining a scandium-loaded organic solvent, wherein the leachate contains iron and scandium ions, and wherein the organic solvent contains a primary amine. The scandium values are then stripped from the scandium-loaded solvent with a stripping solution containing an acid and a salt.
    Type: Grant
    Filed: December 21, 2015
    Date of Patent: May 29, 2018
    Assignee: Scandium International Mining Corp.
    Inventor: Willem P. C. Duyvesteyn
  • Patent number: 9982325
    Abstract: Methods are provided for the recovery of scandium from scandium-bearing ores. The methods included leaching under atmospheric conditions using various acids. Solution impurities are removed from the leachate and scandium values are then recovered from the leachate.
    Type: Grant
    Filed: November 5, 2015
    Date of Patent: May 29, 2018
    Assignee: Scandium International Mining Corp.
    Inventor: Willem P. C. Duyvesteyn
  • Publication number: 20180030577
    Abstract: A method (101) is provided for making a scandium-containing alloy. The method includes providing a molten metal (103), and mixing the molten metal with a scandium-containing precursor (113) which undergoes thermal decomposition at the temperature of the molten metal to produce scandium oxide, thereby producing a scandium-containing alloy.
    Type: Application
    Filed: July 31, 2017
    Publication date: February 1, 2018
    Inventor: Willem P.C. Duyvesteyn
  • Publication number: 20160289795
    Abstract: A method is provided for extracting scandium values from a scandium bearing laterite ore. The method includes providing a portion of a scandium bearing laterite ore having an average particle size of no more than 200 mesh, leaching the ore to produce a leachate, and recovering scandium values from the leachate.
    Type: Application
    Filed: February 10, 2016
    Publication date: October 6, 2016
    Applicant: Scandium International Mining Corporation
    Inventor: Willem P.C. Duyvesteyn
  • Publication number: 20160177420
    Abstract: A method for isolating scandium values is provided. The method includes extracting scandium values from a leachate with an organic solvent, thereby obtaining a scandium-loaded organic solvent, wherein the leachate contains iron and scandium ions, and wherein the organic solvent contains a primary amine. The scandium values are then stripped from the scandium-loaded solvent with a stripping solution containing an acid and a salt.
    Type: Application
    Filed: December 21, 2015
    Publication date: June 23, 2016
    Inventor: Willem P.C. Duyvesteyn
  • Publication number: 20160153070
    Abstract: Methods are provided for the recovery of scandium from scandium-bearing ores. The methods included leaching under atmospheric conditions using various acids. Solution impurities are removed from the leachate and scandium values are then recovered from the leachate.
    Type: Application
    Filed: November 5, 2015
    Publication date: June 2, 2016
    Inventor: Willem P.C. Duyvesteyn
  • Patent number: 8877044
    Abstract: Methods for preparing solvent-dry, stackable tailings. The method can include the steps of adding a first quantity of first solvent to a bitumen material to form a first mixture, separating a first quantity of bitumen-enriched solvent from the first mixture and thereby creating first solvent-wet tailings, adding a quantity of second solvent to first solvent-wet tailings to separate a first quantity of first solvent component from the first solvent-wet tailings and thereby producing second solvent-wet tailings, and adding a quantity of water to the second solvent-wet tailings to separate a first quantity of second solvent component from the second solvent-wet tailings and thereby forming solvent-dry, stackable tailings.
    Type: Grant
    Filed: November 30, 2010
    Date of Patent: November 4, 2014
    Assignee: Shell Canada Energy Cheveron Canada Limited
    Inventors: Willem P. C. Duyvesteyn, Mahendra Joshi, Julian Kift, Dominic J. Zelnik, Whip C. Thompson, Cherish M. Hoffman
  • Patent number: 8864982
    Abstract: A method of extracting bitumen from bituminous material. In some embodiments, the method may include loading a bitumen material in a column, followed by feeding a first quantity of first solvent into the column. The method may also include collecting the bitumen-enriched solvent exiting the column. A quantity of the bitumen-enriched solvent may then be fed into the column. In some embodiments, the method may include simultaneously loading bitumen material and a first solvent in a column, followed by feeding additional first solvent into the column. The method may also include collecting bitumen-enriched solvent exiting the column, and feeding a quantity of the bitumen-enriched solvent into the column.
    Type: Grant
    Filed: December 28, 2009
    Date of Patent: October 21, 2014
    Assignee: Shell Canada Energy Cheveron Canada Limited
    Inventors: Willem P. C. Duyvesteyn, Julian Kift, Cherish M. Hoffman, Whip C. Thompson
  • Patent number: 8679325
    Abstract: Embodiments of a method and a system for recovering energy, materials or both from asphaltene-containing tailings are disclosed. The asphaltene-containing tailings can be generated, for example, from a process for recovering hydrocarbons from oil sand. Embodiments of the method can include a flotation separation and a hydrophobic agglomeration separation. Flotation can be used to separate the asphaltene-containing tailings into an asphaltene-rich froth and an asphaltene-depleted aqueous phase. The asphaltene-rich froth, or an asphaltene-rich slurry formed from the asphaltene-rich froth, then can be separated into a heavy mineral concentrate and a light tailings. Hydrophobic agglomeration can be used to recover an asphaltene concentrate from the light tailings. Another flotation separation can be included to remove sulfur-containing minerals from the heavy mineral concentrate. Oxygen-containing minerals also can be recovered from the heavy mineral concentrate.
    Type: Grant
    Filed: March 13, 2009
    Date of Patent: March 25, 2014
    Assignee: Shell Oil Company
    Inventors: Willem P. C. Duyvesteyn, Julian Kift, Raymond L. Morley
  • Patent number: 8663462
    Abstract: Methods for extracting bitumen from bituminous material through the use of a polar solvent. The method may include a primary leaching or extraction process that separates most of the bitumen from a material comprising bitumen and produces first solvent-wet tailings. A polar solvent is added to the first solvent-wet tailings in order to remove the first solvent (plus any entrained bitumen) from the tailings. A mixture of polar solvent and first solvent produced by the addition of the polar solvent to the first solvent-wet tailings may be phase separated by maintaining the polar solvent-first solvent mixture for a period of time. Alternatively, the polar solvent and first solvent may leave the tailings in a phase separated state. Phase separation may occur due to the presence of water in the polar solvent-first solvent mixture. Water may also be added to the mixture of solvents to serve as an antisolvent and initiate phase separation. The separated solvents may then be recovered and reused in the method.
    Type: Grant
    Filed: September 16, 2009
    Date of Patent: March 4, 2014
    Assignee: Shell Canada Energy Cheveron Canada Limited
    Inventor: Willem P. C. Duyvesteyn
  • Patent number: 8658029
    Abstract: Methods for preparing solvent-dry, stackable tailings. The methods may include a primary leaching or extraction process that separates most of the bitumen from a material comprising bitumen and produces first solvent-wet tailings. The first solvent-wet tailings are washed with a second solvent that removes the first solvent from the tailings. Second solvent remaining in the tailings is removed to thereby produce solvent-dry, stackable tailings.
    Type: Grant
    Filed: August 13, 2012
    Date of Patent: February 25, 2014
    Assignee: Marathon Oil Canada Corporation
    Inventors: Willem P. C. Duyvesteyn, Julian Kift
  • Patent number: 8529687
    Abstract: A method for processing asphaltenes is disclosed. The method can include separating asphaltenes from an asphaltene-containing composition and oxidizing the separated asphaltenes to form oxidation products. Alternatively, the method can include oxidizing asphaltenes within an asphaltene-containing composition without first separating the asphaltenes. Once formed, the oxidation products can be combined with other hydrocarbons. The amount of oxidation can be limited to an amount sufficient to produce a mixture suitable for the desired application. This method can be used to upgrade asphaltenes from a variety of sources, including oil sands. The oxidation step can be performed, for example, by introducing an oxidizing agent and, in some cases, a catalyst into the asphaltenes. A solvent or miscibility agent also can be introduced to improve mixing between the oxidizing agent and the asphaltenes.
    Type: Grant
    Filed: August 26, 2010
    Date of Patent: September 10, 2013
    Assignee: Marathon Oil Canada Corporation
    Inventors: Willem P. C. Duyvesteyn, Raymond L. Morley
  • Patent number: 8449763
    Abstract: Embodiments of a nozzle reactor of the type useable to inject a first material feed stock and a second material feed stock to cause interaction between the first material feed stock and second material feed stock are described herein. According to some embodiments, the nozzle reactor may crack residual oil produced by other processing units in a refinery process. Furthermore, nozzle reactors may replace traditional processing units of a refinery process, such as cokers, hydrocrackers and deasphalting units.
    Type: Grant
    Filed: April 15, 2010
    Date of Patent: May 28, 2013
    Assignee: Marathon Canadian Oil Sands Holding Limited
    Inventor: Willem P. C. Duyvesteyn