Patents by Inventor David Ketema JOHNSON
David Ketema JOHNSON 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).
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Patent number: 11749826Abstract: A heat to electricity converter including a working fluid and a pair of membrane electrode assemblies (MEA) is provided. Each MEA includes a pair of electrodes which are electron conductive and permeable to the working fluid, and a thin film electrolyte membrane sandwiched between the electrodes. The membrane is conductive of ions of the working fluid and has a thickness of 0.03 ?m to 10 ?m. At least one electrode of each MEA includes a non-porous and dense metal. One electrode of each MEA is in contact with the working fluid at a first, higher pressure, while the other electrode is in contact with the working fluid at a second, lower pressure. The first MEA is configured to compress the working fluid from the second pressure to the first pressure, while the second MEA is configured to expand the working fluid from the first pressure to the second pressure.Type: GrantFiled: August 24, 2021Date of Patent: September 5, 2023Assignee: JTEC ENERGY, INC.Inventors: Lonnie G. Johnson, David Ketema Johnson
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Publication number: 20230207928Abstract: A method of generating electrical energy using an electrochemical direct heat to electricity converter operating on the Rankine cycle is provided. The converter includes a working fluid, a high temperature electrochemical cell including a first membrane electrode assembly, a low temperature electrochemical cell including a second membrane electrode assembly, an evaporator coupled to the first electrochemical cell, a condenser coupled to the second electrochemical cell, and an external load. The method involves introducing the working fluid at the first membrane electrode assembly as a liquid, expanding the working fluid through the first membrane electrode assembly and evaporating it into a vapor, and cooling and condensing the vapor back into a liquid at the second membrane electrode assembly.Type: ApplicationFiled: May 21, 2021Publication date: June 29, 2023Inventor: David Ketema JOHNSON
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Publication number: 20230056025Abstract: A thermo-electrochemical converter is provided. The converter includes a working fluid, coupled first and second membrane electrode assemblies (MEA), first and second heat transfer members, a heat sink and a heat source. Each MEA includes a first porous electrode operating at a first pressure, a second porous electrode operating at a second pressure which is higher than the first pressure, and an ion conductive membrane sandwiched therebetween. The first MEA compresses the working fluid and the second MEA expands the working fluid. The first heat transfer member is coupled to and thermally interfaces with a low-pressure electrode of the first MEA. The second heat transfer member is coupled to and thermally interfaces with a lowpressure electrode of the second MEA. The heat sink is coupled to the low-pressure side of the first MEA and the heat source is coupled to the low-pressure side of the second MEA.Type: ApplicationFiled: February 12, 2021Publication date: February 23, 2023Applicant: JTEC Energy, Inc.Inventors: Lonnie G. JOHNSON, David Ketema JOHNSON, Andrew Ashford KNIGHT, Tedric D. CAMPBELL
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Patent number: 11417873Abstract: Solid-state batteries, battery components, and related processes for their production are provided. The battery electrodes or separators contain sintered electrochemically active material, inorganic solid particulate electrolyte having large particle size, and low melting point solid inorganic electrolyte which acts as a binder and/or a sintering aid in the electrode.Type: GrantFiled: October 3, 2019Date of Patent: August 16, 2022Assignee: JOHNSON IP HOLDING, LLCInventors: Lazbourne Alanzo Allie, Adrian M. Grant, Devon Lyman, Lonnie G. Johnson, David Ketema Johnson
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Publication number: 20220166063Abstract: A solid state Li battery and an all ceramic Li-ion battery are disclosed. The all ceramic battery has a solid state battery cathode comprised of a mixture of an active cathode material, an electronically conductive material, and a solid ionically conductive material. The cathode mixture is sintered. The battery also has a solid state battery anode comprised of a mixture of an active anode material, an electronically conductive material, and a solid ionically conductive material. The anode mixture is sintered. The battery also has a solid state separator positioned between said solid state battery cathode and said solid state battery anode. In the solid state Li battery the all ceramic anode is replaced with an evaporated thin film Li metal anode.Type: ApplicationFiled: February 8, 2022Publication date: May 26, 2022Inventors: Lonnie G. JOHNSON, Steve BUCKINGHAM, Davorin BABIC, David Ketema JOHNSON
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Publication number: 20220059859Abstract: A heat to electricity converter including a working fluid and a pair of membrane electrode assemblies (MEA) is provided. Each MEA includes a pair of electrodes which are electron conductive and permeable to the working fluid, and a thin film electrolyte membrane sandwiched between the electrodes. The membrane is conductive of ions of the working fluid and has a thickness of 0.03 ?m to 10 ?m. At least one electrode of each MEA includes a non-porous and dense metal. One electrode of each MEA is in contact with the working fluid at a first, higher pressure, while the other electrode is in contact with the working fluid at a second, lower pressure. The first MEA is configured to compress the working fluid from the second pressure to the first pressure, while the second MEA is configured to expand the working fluid from the first pressure to the second pressure.Type: ApplicationFiled: August 24, 2021Publication date: February 24, 2022Inventors: Lonnie G. Johnson, David Ketema JOHNSON
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Patent number: 10566611Abstract: Solid-state batteries, battery components, and related processes for their production are provided. The battery electrodes or separators contain sintered electrochemically active material, inorganic solid particulate electrolyte having large particle size, and low melting point solid inorganic electrolyte which acts as a binder and/or a sintering aid in the electrode.Type: GrantFiled: December 21, 2016Date of Patent: February 18, 2020Assignee: Johnson IP Holding, LLCInventors: Lazbourne Alanzo Allie, Adrian M. Grant, Devon Lyman, Lonnie G. Johnson, David Ketema Johnson
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Publication number: 20200036000Abstract: Solid-state batteries, battery components, and related processes for their production are provided. The battery electrodes or separators contain sintered electrochemically active material, inorganic solid particulate electrolyte having large particle size, and low melting point solid inorganic electrolyte which acts as a binder and/or a sintering aid in the electrode.Type: ApplicationFiled: October 3, 2019Publication date: January 30, 2020Inventors: Lazbourne Alanzo ALLIE, Adrian M. GRANT, Devon LYMAN, Lonnie G. JOHNSON, David Ketema JOHNSON
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Patent number: 10333123Abstract: A high capacity solid state composite cathode contains an active cathode material dispersed in an amorphous inorganic ionically conductive metal oxide, such as lithium lanthanum zirconium oxide and/or lithium carbon lanthanum zirconium oxide. A solid state composite separator contains an electronically insulating inorganic powder dispersed in an amorphous, inorganic, ionically conductive metal oxide. Methods for preparing the composite cathode and composite separator are provided.Type: GrantFiled: March 1, 2013Date of Patent: June 25, 2019Assignee: Johnson IP Holding, LLCInventors: Joykumar S. Thokchom, Davorin Babic, Lonnie G. Johnson, Lazbourne Alanzo Allie, David Ketema Johnson, William Rauch
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Publication number: 20180366707Abstract: Embodiments of solid-state batteries, battery components, and related construction methods are described. The components include one or more embodiments of a low melt temperature electrolyte bonded solid-state rechargeable battery electrode and one or more embodiments of a composite separator having a low melt temperature electrolyte component. Embodiments of methods for fabrication of solid-state batteries and battery components are described. These methods include co-extrusion, hot pressing and roll casting.Type: ApplicationFiled: August 22, 2018Publication date: December 20, 2018Inventors: Lonnie G. JOHNSON, David Ketema JOHNSON
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Patent number: 10084168Abstract: Embodiments of solid-state batteries, battery components, and related construction methods are described. The components include one or more embodiments of a low melt temperature electrolyte bonded solid-state rechargeable battery electrode and one or more embodiments of a composite separator having a low melt temperature electrolyte component. Embodiments of methods for fabrication of solid-state batteries and battery components are described. These methods include co-extrusion, hot pressing and roll casting.Type: GrantFiled: March 14, 2013Date of Patent: September 25, 2018Assignee: JOHNSON BATTERY TECHNOLOGIES, INC.Inventors: Lonnie G. Johnson, David Ketema Johnson
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Publication number: 20170179472Abstract: Solid-state batteries, battery components, and related processes for their production are provided. The battery electrodes or separators contain sintered electrochemically active material, inorganic solid particulate electrolyte having large particle size, and low melting point solid inorganic electrolyte which acts as a binder and/or a sintering aid in the electrode.Type: ApplicationFiled: December 21, 2016Publication date: June 22, 2017Inventors: Lazbourne Alanzo ALLIE, Adrian M. GRANT, Devon LYMAN, Lonnie G. JOHNSON, David Ketema JOHNSON
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Patent number: 9356317Abstract: Amorphous lithium lanthanum zirconium oxide (LLZO) is formed as an ionically-conductive electrolyte medium. The LLZO comprises by percentage of total number of atoms from about 0.1% to about 50% lithium, from about 0.1% to about 25% lanthanum, from about 0.1% to about 25% zirconium, from about 30% to about 70% oxygen and from 0.0% to about 25% carbon. At least one layer of amorphous LLZO may be formed through a sol-gel process wherein quantities of lanthanum methoxyethoxide, lithium butoxide and zirconium butoxide are dissolved in an alcohol-based solvent to form a mixture which is dispensed into a substantially planar configuration, transitioned through a gel phase, dried and cured to a substantially dry phase.Type: GrantFiled: October 31, 2014Date of Patent: May 31, 2016Assignee: Johnson IP Holding, LLCInventors: Davorin Babic, Lonnie G. Johnson, William Rauch, David Ketema Johnson, Stanley Jones, Lazbourne Alanzo Allie, Adrian M. Grant
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Publication number: 20150333307Abstract: A high capacity solid state composite cathode contains an active cathode material dispersed in an amorphous inorganic ionically conductive metal oxide, such as lithium lanthanum zirconium oxide and/or lithium carbon lanthanum zirconium oxide. A solid state composite separator contains an electronically insulating inorganic powder dispersed in an amorphous, inorganic, ionically conductive metal oxide. Methods for preparing the composite cathode and composite separator are provided.Type: ApplicationFiled: March 1, 2013Publication date: November 19, 2015Inventors: Joykumar S. THOKCHOM, Davorin BABIC, Lonnie G. JOHNSON, Lazbourne Alanzo ALLIE, David Ketema JOHNSON, William RAUCH
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Publication number: 20150056520Abstract: An impregnated solid state composite cathode is provided. The cathode contains a sintered porous active material, in which pores of the porous material are impregnated with an inorganic ionically conductive amorphous solid electrolyte. A method for producing the impregnated solid state composite cathode involves forming a pellet containing an active intercalation cathode material; sintering the pellet to form a sintered porous cathode pellet; impregnating pores of the sintered porous cathode pellet with a liquid precursor of an inorganic amorphous ionically conductive solid electrolyte; and curing the impregnated pellet to yield the composite cathode.Type: ApplicationFiled: March 1, 2013Publication date: February 26, 2015Inventors: Joykumar S. Thokchom, Davorin Babic, Lonnie G. Johnson, Lazbourne Alanzo Allie, David Ketema Johnson, William Rauch
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Publication number: 20150056518Abstract: Amorphous lithium lanthanum zirconium oxide (LLZO) is formed as an ionically-conductive electrolyte medium. The LLZO comprises by percentage of total number of atoms from about 0.1% to about 50% lithium, from about 0.1% to about 25% lanthanum, from about 0.1% to about 25% zirconium, from about 30% to about 70% oxygen and from 0.0% to about 25% carbon. At least one layer of amorphous LLZO may be formed through a sol-gel process wherein quantities of lanthanum methoxyethoxide, lithium butoxide and zirconium butoxide are dissolved in an alcohol-based solvent to form a mixture which is dispensed into a substantially planar configuration, transitioned through a gel phase, dried and cured to a substantially dry phase.Type: ApplicationFiled: October 31, 2014Publication date: February 26, 2015Applicant: JOHNSON IP HOLDING, LLCInventors: Davorin BABIC, Lonnie G. JOHNSON, William RAUCH, David Ketema JOHNSON, Stanley JONES, Lazbourne Alanzo ALLIE, Adrian M. GRANT
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Publication number: 20120196189Abstract: Amorphous lithium lanthanum zirconium oxide (LLZO) is formed as an ionically-conductive electrolyte medium. The LLZO comprises by percentage of total number of atoms from about 0.1% to about 50% lithium, from about 0.1% to about 25% lanthanum, from about 0.1% to about 25% zirconium, from about 30% to about 70% oxygen and from 0.0% to about 25% carbon. At least one layer of amorphous LLZO may be formed through a sol-gel process wherein quantities of lanthanum methoxyethoxide, lithium butoxide and zirconium butoxide are dissolved in an alcohol-based solvent to form a mixture which is dispensed into a substantially planar configuration, transitioned through a gel phase, dried and cured to a substantially dry phase.Type: ApplicationFiled: March 2, 2012Publication date: August 2, 2012Applicant: JOHNSON IP HOLDING, LLCInventors: Davorin BABIC, Lonnie G. JOHNSON, William RAUCH, David Ketema JOHNSON, Stanley JONES, Lazbourne Alanzo ALLIE, Adrian M. GRANT