Patents by Inventor David William Keith

David William Keith 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: 12583756
    Abstract: Techniques for growing crystalline calcium carbonate solids such that the crystalline calcium carbonate solids include a volume of 0.0005 mm3 to 5 mm3, include a slaker to react quicklime (CaO) and a low carbonate content fluid to yield a slurry of primarily slaked lime (Ca(OH)2); a fluidized-bed reactive crystallizer that encloses a solid bed mass and includes an input for a slurry of primarily slaked lime, an input for an alkaline solution and carbonate, and an output for crystalline calcium carbonate solids that include particles and an alkaline carbonate solution; a dewatering apparatus that includes an input coupled to the crystallizer and an output to discharge a plurality of separate streams that each include a portion of the crystalline calcium carbonate solids and alkaline carbonate solution; and a seed transfer apparatus to deliver seed material into the crystallizer to maintain a consistent mass of seed material.
    Type: Grant
    Filed: July 1, 2024
    Date of Patent: March 24, 2026
    Assignee: Carbon Engineering ULC
    Inventors: Kenton Robert Heidel, David William Keith, Jane Anne Ritchie, Nicholas Vollendorf, Eric Fessler
  • Publication number: 20250002364
    Abstract: Techniques for growing crystalline calcium carbonate solids such that the crystalline calcium carbonate solids include a volume of 0.0005 mm3 to 5 mm3, include a slaker to react quicklime (CaO) and a low carbonate content fluid to yield a slurry of primarily slaked lime (Ca(OH)2); a fluidized-bed reactive crystallizer that encloses a solid bed mass and includes an input for a slurry of primarily slaked lime, an input for an alkaline solution and carbonate, and an output for crystalline calcium carbonate solids that include particles and an alkaline carbonate solution; a dewatering apparatus that includes an input coupled to the crystallizer and an output to discharge a plurality of separate streams that each include a portion of the crystalline calcium carbonate solids and alkaline carbonate solution; and a seed transfer apparatus to deliver seed material into the crystallizer to maintain a consistent mass of seed material.
    Type: Application
    Filed: July 1, 2024
    Publication date: January 2, 2025
    Inventors: Kenton Robert Heidel, David William Keith, Jane Anne Ritchie, Nicholas Vollendorf, Eric Fessler
  • Patent number: 12054399
    Abstract: Techniques for growing crystalline calcium carbonate solids such that the crystalline calcium carbonate solids include a volume of 0.0005 mm3 to 5 mm3, include a slaker to react quicklime (CaO) and a low carbonate content fluid to yield a slurry of primarily slaked lime (Ca(OH)2); a fluidized-bed reactive crystallizer that encloses a solid bed mass and includes an input for a slurry of primarily slaked lime, an input for an alkaline solution and carbonate, and an output for crystalline calcium carbonate solids that include particles and an alkaline carbonate solution; a dewatering apparatus that includes an input coupled to the crystallizer and an output to discharge a plurality of separate streams that each include a portion of the crystalline calcium carbonate solids and alkaline carbonate solution; and a seed transfer apparatus to deliver seed material into the crystallizer to maintain a consistent mass of seed material.
    Type: Grant
    Filed: April 20, 2023
    Date of Patent: August 6, 2024
    Assignee: Carbon Engineering ULC
    Inventors: Kenton Robert Heidel, David William Keith, Jane Anne Ritchie, Nicholas Vollendorf, Eric Fessler
  • Publication number: 20230331576
    Abstract: Techniques for growing crystalline calcium carbonate solids such that the crystalline calcium carbonate solids include a volume of 0.0005 mm3 to 5 mm3, include a slaker to react quicklime (CaO) and a low carbonate content fluid to yield a slurry of primarily slaked lime (Ca(OH)2); a fluidized-bed reactive crystallizer that encloses a solid bed mass and includes an input for a slurry of primarily slaked lime, an input for an alkaline solution and carbonate, and an output for crystalline calcium carbonate solids that include particles and an alkaline carbonate solution; a dewatering apparatus that includes an input coupled to the crystallizer and an output to discharge a plurality of separate streams that each include a portion of the crystalline calcium carbonate solids and alkaline carbonate solution; and a seed transfer apparatus to deliver seed material into the crystallizer to maintain a consistent mass of seed material.
    Type: Application
    Filed: April 20, 2023
    Publication date: October 19, 2023
    Inventors: Kenton Robert HEIDEL, David William Keith, Jane Anne Ritchie, Nicholas Vollendorf, Eric Fessler
  • Patent number: 11667538
    Abstract: Techniques for growing crystalline calcium carbonate solids such that the crystalline calcium carbonate solids include a volume of 0.0005 mm3 to 5 mm3, include a slaker to react quicklime (CaO) and a low carbonate content fluid to yield a slurry of primarily slaked lime (Ca(OH)2); a fluidized-bed reactive crystallizer that encloses a solid bed mass and includes an input for a slurry of primarily slaked lime, an input for an alkaline solution and carbonate, and an output for crystalline calcium carbonate solids that include particles and an alkaline carbonate solution; a dewatering apparatus that includes an input coupled to the crystallizer and an output to discharge a plurality of separate streams that each include a portion of the crystalline calcium carbonate solids and alkaline carbonate solution; and a seed transfer apparatus to deliver seed material into the crystallizer to maintain a consistent mass of seed material.
    Type: Grant
    Filed: April 21, 2021
    Date of Patent: June 6, 2023
    Assignee: Carbon Engineering Ltd.
    Inventors: Kenton Robert Heidel, David William Keith, Jane Anne Ritchie, Nicholas Vollendorf, Eric Fessler
  • Publication number: 20210284545
    Abstract: Techniques for growing crystalline calcium carbonate solids such that the crystalline calcium carbonate solids include a volume of 0.0005 mm3 to 5 mm3, include a slaker to react quicklime (CaO) and a low carbonate content fluid to yield a slurry of primarily slaked lime (Ca(OH)2); a fluidized-bed reactive crystallizer that encloses a solid bed mass and includes an input for a slurry of primarily slaked lime, an input for an alkaline solution and carbonate, and an output for crystalline calcium carbonate solids that include particles and an alkaline carbonate solution; a dewatering apparatus that includes an input coupled to the crystallizer and an output to discharge a plurality of separate streams that each include a portion of the crystalline calcium carbonate solids and alkaline carbonate solution; and a seed transfer apparatus to deliver seed material into the crystallizer to maintain a consistent mass of seed material.
    Type: Application
    Filed: April 21, 2021
    Publication date: September 16, 2021
    Inventors: Kenton Robert HEIDEL, David William Keith, Jane Anne Ritchie, Nicholas Vollendorf, Eric Fessler
  • Patent number: 11014823
    Abstract: Techniques for growing crystalline calcium carbonate solids such that the crystalline calcium carbonate solids include a volume of 0.0005 mm3 to 5 mm3, include a slaker to react quicklime (CaO) and a low carbonate content fluid to yield a slurry of primarily slaked lime (Ca(OH)2); a fluidized-bed reactive crystallizer that encloses a solid bed mass and includes an input for a slurry of primarily slaked lime, an input for an alkaline solution and carbonate, and an output for crystalline calcium carbonate solids that include particles and an alkaline carbonate solution; a dewatering apparatus that includes an input coupled to the crystallizer and an output to discharge a plurality of separate streams that each include a portion of the crystalline calcium carbonate solids and alkaline carbonate solution; and a seed transfer apparatus to deliver seed material into the crystallizer to maintain a consistent mass of seed material.
    Type: Grant
    Filed: December 5, 2019
    Date of Patent: May 25, 2021
    Assignee: Carbon Engineering Ltd.
    Inventors: Kenton Robert Heidel, David William Keith, Jane Anne Ritchie, Nicholas Vollendorf, Eric Fessler
  • Publication number: 20200109059
    Abstract: Techniques for growing crystalline calcium carbonate solids such that the crystalline calcium carbonate solids include a volume of 0.0005 mm3 to 5 mm3, include a slaker to react quicklime (CaO) and a low carbonate content fluid to yield a slurry of primarily slaked lime (Ca(OH)2); a fluidized-bed reactive crystallizer that encloses a solid bed mass and includes an input for a slurry of primarily slaked lime, an input for an alkaline solution and carbonate, and an output for crystalline calcium carbonate solids that include particles and an alkaline carbonate solution; a dewatering apparatus that includes an input coupled to the crystallizer and an output to discharge a plurality of separate streams that each include a portion of the crystalline calcium carbonate solids and alkaline carbonate solution; and a seed transfer apparatus to deliver seed material into the crystallizer to maintain a consistent mass of seed material.
    Type: Application
    Filed: December 5, 2019
    Publication date: April 9, 2020
    Inventors: Kenton Robert HEIDEL, David William Keith, Jane Anne Ritchie, Nicholas Vollendorf, Eric Fessler
  • Patent number: 10557338
    Abstract: A method for reducing a carbon emissions intensity of a fuel includes producing a first hydrocarbon fluid; capturing a carbon dioxide (CO2) fluid from the first hydrocarbon fluid production; and injecting the captured carbon dioxide into a subterranean zone from one or more wellbores to enhance a production of a second hydrocarbon fluid from the zone, at least one of the first or the second hydrocarbon fluids processable into a hydrocarbon fuel that includes a low carbon intensity fuel based, at least in part, on the captured and injected CO2 fluid.
    Type: Grant
    Filed: September 18, 2014
    Date of Patent: February 11, 2020
    Assignee: 1234 10th Street LLC
    Inventors: James Rhodes, David William Keith
  • Patent number: 10519041
    Abstract: Techniques for growing crystalline calcium carbonate solids such that the crystalline calcium carbonate solids include a volume of 0.0005 mm3 to 5 mm3, include a slaker to react quicklime (CaO) and a low carbonate content fluid to yield a slurry of primarily slaked lime (Ca(OH)2); a fluidized-bed reactive crystallizer that encloses a solid bed mass and includes an input for a slurry of primarily slaked lime, an input for an alkaline solution and carbonate, and an output for crystalline calcium carbonate solids that include particles and an alkaline carbonate solution; a dewatering apparatus that includes an input coupled to the crystallizer and an output to discharge a plurality of separate streams that each include a portion of the crystalline calcium carbonate solids and alkaline carbonate solution; and a seed transfer apparatus to deliver seed material into the crystallizer to maintain a consistent mass of seed material.
    Type: Grant
    Filed: December 6, 2016
    Date of Patent: December 31, 2019
    Assignee: Carbon Engineering Ltd.
    Inventors: Kenton Robert Heidel, David William Keith, Jane Anne Ritchie, Nicholas Vollendorf, Eric Fessler
  • Patent number: 10006275
    Abstract: Techniques for reducing a carbon emissions intensity of a fuel includes injecting a carbon dioxide fluid into a first wellbore; producing a hydrocarbon fluid from a second wellbore to a terranean surface; and producing a fuel from the produced hydrocarbon fluid, the fuel including a low-carbon fuel and assigned an emissions credit based on a source of the carbon dioxide fluid.
    Type: Grant
    Filed: October 9, 2015
    Date of Patent: June 26, 2018
    Assignee: 1234 10th Street LLC
    Inventors: David William Keith, James Rhodes
  • Patent number: 9975100
    Abstract: Techniques for converting a portion of a carbonate to hydroxide include receiving an alkaline carbonate solution that includes between 0.1M (moles per liter of solution) to 4.0M hydroxide and between 0.1M to 4.1M carbonate; reacting, in a slaking process, quicklime (CaO) and a low carbonate content fluid to yield a slurry of primarily slaked lime (Ca(OH)2); and reacting the Ca(OH)2 slurry and the alkaline carbonate solution to grow calcium carbonate (CaCO3) crystal aggregates of 0.0005 mm3 to 5 mm3 in volume in a fluidized-bed reactive crystallizer.
    Type: Grant
    Filed: May 9, 2014
    Date of Patent: May 22, 2018
    Assignee: Carbon Engineering Ltd.
    Inventors: Kenton Robert Heidel, Jane Anne Ritchie, Arvinder Pal Singh Kainth, David William Keith
  • Patent number: 9894735
    Abstract: Systems and methods of the disclosed subject matter provide to detect the signature of a light source through either electrical signature on a circuit or external light signatures output by the light source, and a switch can change modes and features to match the capabilities of the connected light source. Embodiments of the disclosed subject matter provide a light source, a sensor to determine a type of the light source, and a switch, including a processor, to determine a set of operations according to the determined type of light source, and to control the light source to perform a selected operation from the determined set of operations.
    Type: Grant
    Filed: November 17, 2016
    Date of Patent: February 13, 2018
    Assignee: GOOGLE LLC
    Inventor: David William Keith
  • Patent number: 9637393
    Abstract: Techniques for growing crystalline calcium carbonate solids such that the crystalline calcium carbonate solids include a volume of 0.0005 mm3 to 5 mm3, include a slaker to react quicklime (CaO) and a low carbonate content fluid to yield a slurry of primarily slaked lime (Ca(OH)2); a fluidized-bed reactive crystallizer that encloses a solid bed mass and includes an input for a slurry of primarily slaked lime, an input for an alkaline solution and carbonate, and an output for crystalline calcium carbonate solids that include particles and an alkaline carbonate solution; a dewatering apparatus that includes an input coupled to the crystallizer and an output to discharge a plurality of separate streams that each include a portion of the crystalline calcium carbonate solids and alkaline carbonate solution; and a seed transfer apparatus to deliver seed material into the crystallizer to maintain a consistent mass of seed material.
    Type: Grant
    Filed: May 19, 2014
    Date of Patent: May 2, 2017
    Assignee: Carbon Engineering Limited Partnership
    Inventors: Kenton Robert Heidel, David William Keith, Jane Anne Ritchie, Nicholas Vollendorf, Eric Fessler
  • Publication number: 20170081207
    Abstract: Techniques for growing crystalline calcium carbonate solids such that the crystalline calcium carbonate solids include a volume of 0.0005 mm3 to 5 mm3, include a slaker to react quicklime (CaO) and a low carbonate content fluid to yield a slurry of primarily slaked lime (Ca(OH)2); a fluidized-bed reactive crystallizer that encloses a solid bed mass and includes an input for a slurry of primarily slaked lime, an input for an alkaline solution and carbonate, and an output for crystalline calcium carbonate solids that include particles and an alkaline carbonate solution; a dewatering apparatus that includes an input coupled to the crystallizer and an output to discharge a plurality of separate streams that each include a portion of the crystalline calcium carbonate solids and alkaline carbonate solution; and a seed transfer apparatus to deliver seed material into the crystallizer to maintain a consistent mass of seed material.
    Type: Application
    Filed: December 6, 2016
    Publication date: March 23, 2017
    Inventors: Kenton Robert HEIDEL, David William Keith, Jane Anne Ritchie, Nicholas Vollendorf, Eric Fessler
  • Publication number: 20170071047
    Abstract: Systems and methods of the disclosed subject matter provide to detect the signature of a light source through either electrical signature on a circuit or external light signatures output by the light source, and a switch can change modes and features to match the capabilities of the connected light source. Embodiments of the disclosed subject matter provide a light source, a sensor to determine a type of the light source, and a switch, including a processor, to determine a set of operations according to the determined type of light source, and to control the light source to perform a selected operation from the determined set of operations.
    Type: Application
    Filed: November 17, 2016
    Publication date: March 9, 2017
    Inventor: David William Keith
  • Patent number: 9532434
    Abstract: Systems and methods of the disclosed subject matter provide to detect the signature of a light source through either electrical signature on a circuit or external light signatures output by the light source, and a switch can change modes and features to match the capabilities of the connected light source. Embodiments of the disclosed subject matter provide a light source, a sensor to determine a type of the light source, and a switch, including a processor, to determine a set of operations according to the determined type of light source, and to control the light source to perform a selected operation from the determined set of operations.
    Type: Grant
    Filed: December 30, 2014
    Date of Patent: December 27, 2016
    Assignee: GOOGLE INC.
    Inventor: David William Keith
  • Publication number: 20160265324
    Abstract: Techniques for reducing a carbon emissions intensity of a fuel includes injecting a carbon dioxide fluid into a first wellbore; producing a hydrocarbon fluid from a second wellbore to a terranean surface; and producing a fuel from the produced hydrocarbon fluid, the fuel including a low-carbon fuel and assigned an emissions credit based on a source of the carbon dioxide fluid.
    Type: Application
    Filed: October 9, 2015
    Publication date: September 15, 2016
    Inventors: David William Keith, James Rhodes
  • Publication number: 20160222774
    Abstract: A method for reducing a carbon emissions intensity of a fuel includes producing a first hydrocarbon fluid; capturing a carbon dioxide (CO2) fluid from the first hydrocarbon fluid production; and injecting the captured carbon dioxide into a subterranean zone from one or more wellbores to enhance a production of a second hydrocarbon fluid from the zone, at least one of the first or the second hydrocarbon fluids processable into a hydrocarbon fuel that includes a low carbon intensity fuel based, at least in part, on the captured and injected CO2 fluid.
    Type: Application
    Filed: September 18, 2014
    Publication date: August 4, 2016
    Inventors: James RHODES, David William KEITH
  • Publication number: 20160192458
    Abstract: Systems and methods of the disclosed subject matter provide to detect the signature of a light source through either electrical signature on a circuit or external light signatures output by the light source, and a switch can change modes and features to match the capabilities of the connected light source. Embodiments of the disclosed subject matter provide a light source, a sensor to determine a type of the light source, and a switch, including a processor, to determine a set of operations according to the determined type of light source, and to control the light source to perform a selected operation from the determined set of operations.
    Type: Application
    Filed: December 30, 2014
    Publication date: June 30, 2016
    Inventor: David William Keith