Patents by Inventor Md. Hasan Zahir
Md. Hasan Zahir 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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Publication number: 20200181346Abstract: A heat energy storage system may have a shape-stabilized composite prepared using an easy impregnation method involving a porous Ca2+-doped MgCO3 matrix and PEG as the functional phase. The heat storage capability, microstructures, and interactions with the PEG/CaMgCO3 composite can be characterized by DSC, SEM imaging, FT-IR spectroscopy, and TGA. Likely because of the synergistic phase change effect of CaMgCO3 and PEG, the PEG/CaMgCO3 composites can have high thermal enthalpies, and their enthalpy efficiencies are substantially higher than those of traditional shape stabilized PCMs. The functional material PEG can permeate porous CaMgCO3 matrices under capillary action. Liquid PEG can be stabilized within the porous matrix, and/or the CaMgCO3 matrix can improve the thermal stability of the PEG. The high heat energy storage properties and good thermal stability of such organic-inorganic composites offers utility in a range of applications, including thermal energy storage.Type: ApplicationFiled: February 19, 2020Publication date: June 11, 2020Applicant: King Fahd University of Petroleum and MineralsInventors: Md. Hasan Zahir, Mohammad Mizanur Rahman
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Patent number: 10646856Abstract: A hydrothermal method of preparing uniform, monodisperse ceramic lanthanum hydroxyl carbonate (LaCO3OH) having cherry-blossom-like nanogears and/or nanocubes is described. The method produced a hexagonal crystal with a crystal lattice in which at least on lanthanum ion is substituted with calcium ion. The ceramic nanoparticles produced by the method are good catalyst for the reduction of nitrogen oxides with a hydrocarbon. A method of reducing exhaust gases is described.Type: GrantFiled: April 23, 2019Date of Patent: May 12, 2020Assignee: King Fahd University of Petroleum and MineralsInventor: Md. Hasan Zahir
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Patent number: 10626238Abstract: A heat energy storage system may have a shape-stabilized composite prepared using an easy impregnation method involving a porous Ca2+-doped MgCO3 matrix and PEG as the functional phase. The heat storage capability, microstructures, and interactions with the PEG/CaMgCO3 composite can be characterized by DSC, SEM imaging, FT-IR spectroscopy, and TGA. Likely because of the synergistic phase change effect of CaMgCO3 and PEG, the PEG/CaMgCO3 composites can have high thermal enthalpies, and their enthalpy efficiencies are substantially higher than those of traditional shape stabilized PCMs. The functional material PEG can permeate porous CaMgCO3 matrices under capillary action. Liquid PEG can be stabilized within the porous matrix, and/or the CaMgCO3 matrix can improve the thermal stability of the PEG. The high heat energy storage properties and good thermal stability of such organic-inorganic composites offers utility in a range of applications, including thermal energy storage.Type: GrantFiled: July 27, 2018Date of Patent: April 21, 2020Assignee: King Fahd University of Petroleum and MineralsInventors: Md. Hasan Zahir, Mohammad Mizanur Rahman
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Publication number: 20200032020Abstract: A heat energy storage system may have a shape-stabilized composite prepared using an easy impregnation method involving a porous Ca2+-doped MgCO3 matrix and PEG as the functional phase. The heat storage capability, microstructures, and interactions with the PEG/CaMgCO3 composite can be characterized by DSC, SEM imaging, FT-IR spectroscopy, and TGA. Likely because of the synergistic phase change effect of CaMgCO3 and PEG, the PEG/CaMgCO3 composites can have high thermal enthalpies, and their enthalpy efficiencies are substantially higher than those of traditional shape stabilized PCMs. The functional material PEG can permeate porous CaMgCO3 matrices under capillary action. Liquid PEG can be stabilized within the porous matrix, and/or the CaMgCO3 matrix can improve the thermal stability of the PEG. The high heat energy storage properties and good thermal stability of such organic-inorganic composites offers utility in a range of applications, including thermal energy storage.Type: ApplicationFiled: July 27, 2018Publication date: January 30, 2020Applicant: King Fahd University of Petroleum and MineralsInventors: Md. Hasan Zahir, Mohammad Mizanur Rahman
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Patent number: 10512900Abstract: A hydrothermal method of preparing uniform, monodisperse ceramic lanthanum hydroxyl carbonate (LaCO3OH) having cherry-blossom-like nanogears and/or nanocubes is described. The method produced a hexagonal crystal with a crystal lattice in which at least on lanthanum ion is substituted with calcium ion. The ceramic nanoparticles produced by the method are good catalyst for the reduction of nitrogen oxides with a hydrocarbon. A method of reducing exhaust gases is described.Type: GrantFiled: April 23, 2019Date of Patent: December 24, 2019Assignee: King Fahd University of Petroleum and MineralsInventor: Md. Hasan Zahir
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Publication number: 20190270077Abstract: A hydrothermal method of preparing uniform, monodisperse ceramic lanthanum hydroxyl carbonate (LaCO3OH) having cherry-blossom-like nanogears and/or nanocubes is described. The method produced a hexagonal crystal with a crystal lattice in which at least on lanthanum ion is substituted with calcium ion. The ceramic nanoparticles produced by the method are good catalyst for the reduction of nitrogen oxides with a hydrocarbon. A method of reducing exhaust gases is described.Type: ApplicationFiled: April 23, 2019Publication date: September 5, 2019Applicant: King Fahd University of Petroleum and MineralsInventor: Md. Hasan Zahir
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Publication number: 20190270076Abstract: A hydrothermal method of preparing uniform, monodisperse ceramic lanthanum hydroxyl carbonate (LaCO3OH) having cherry-blossom-like nanogears and/or nanocubes is described. The method produced a hexagonal crystal with a crystal lattice in which at least on lanthanum ion is substituted with calcium ion. The ceramic nanoparticles produced by the method are good catalyst for the reduction of nitrogen oxides with a hydrocarbon. A method of reducing exhaust gases is described.Type: ApplicationFiled: April 23, 2019Publication date: September 5, 2019Applicant: King Fahd University of Petroleum and MineralsInventor: Md. Hasan ZAHIR
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Patent number: 10322409Abstract: A hydrothermal method of preparing uniform, monodisperse ceramic lanthanum hydroxyl carbonate (LaCO3OH) having cherry-blossom-like nanogears and/or nanocubes is described. The method produced a hexagonal crystal with a crystal lattice in which at least on lanthanum ion is substituted with calcium ion. The ceramic nanoparticles produced by the method are good catalyst for the reduction of nitrogen oxides with a hydrocarbon. A method of reducing exhaust gases is described.Type: GrantFiled: March 5, 2018Date of Patent: June 18, 2019Assignee: King Fahd University of Petroleum and MineralsInventor: Md. Hasan Zahir
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Patent number: 10105655Abstract: A semi-porous composite membrane and a method of manufacturing the semi-porous composite membrane. The semi-porous composite membrane includes a base supporting substrate comprising ?-Al2O3, an outer layer comprising silica, and an intermediate layer comprising crystalline fibers of boehmite, and at least one of a secondary metal oxide and a synthetic polymer, wherein the intermediate layer is disposed between the base supporting substrate and the outer layer. The crystalline fibers of boehmite are a length of 5-150 nm. The semi-porous composite membrane may be employed in membrane reactors.Type: GrantFiled: February 6, 2018Date of Patent: October 23, 2018Assignee: King Fahd University of Petroleum and MineralsInventors: Md. Hasan Zahir, Alhooshani Khalid
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Publication number: 20180161734Abstract: A semi-porous composite membrane and a method of manufacturing the semi-porous composite membrane. The semi-porous composite membrane includes a base supporting substrate comprising ?-Al2O3, an outer layer comprising silica, and an intermediate layer comprising crystalline fibers of boehmite, and at least one of a secondary metal oxide and a synthetic polymer, wherein the intermediate layer is disposed between the base supporting substrate and the outer layer. The crystalline fibers of boehmite are a length of 5-150 nm. The semi-porous composite membrane may be employed in membrane reactors.Type: ApplicationFiled: February 6, 2018Publication date: June 14, 2018Applicant: King Fahd University of Petroleum and MineralsInventors: Md. Hasan ZAHIR, Alhooshani Khalid
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Patent number: 9943808Abstract: A semi-porous composite membrane and a method of manufacturing the semi-porous composite membrane. The semi-porous composite membrane includes a base supporting substrate comprising ?-Al2O3, an outer layer comprising silica, and an intermediate layer comprising crystalline fibers of boehmite, and at least one of a secondary metal oxide and a synthetic polymer, wherein the intermediate layer is disposed between the base supporting substrate and the outer layer. The crystalline fibers of boehmite are a length of 5-150 nm. The semi-porous composite membrane may be employed in membrane reactors.Type: GrantFiled: June 8, 2016Date of Patent: April 17, 2018Assignee: King Fahd University of Petroleum and MineralsInventors: Md. Hasan Zahir, Alhooshani Khalid
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Publication number: 20170348633Abstract: A nanocomposite membrane including an ?-Al2O3 membrane support, a ?-Al2O3 intermediate layer that is 300-1200 nm thick and coats a surface of the membrane support, and a nanocomposite layer including SiO2 and Y2O3 that is 25-150 nm thick and coats a surface of the intermediate layer, wherein the nanocomposite layer is porous with an average largest radius micropore of 0.2-0.6 nm. A method of manufacturing the nanocomposite membrane, whereby the membrane support is coated with the ?-Al2O3, a silica source is hydrolyzed with a mixture of water, an alcohol solvent, and a Y source with a sol-gel technique to yield a Si/Y sol-gel, the membrane support is dip coated with the Si/Y sol-gel, and the nanocomposite membrane is calcined. A method of separating a mixture of gas, whereby the mixture of gas is introduced into a permeance cell and fed through the nanocomposite membrane.Type: ApplicationFiled: August 22, 2017Publication date: December 7, 2017Applicant: King Fahd University of Petroleum and MineralsInventor: Md. Hasan ZAHIR
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Patent number: 9821295Abstract: The present disclosure relates to a process for producing a finely divided metal-doped aluminogallate nanocomposite comprising mixing a carrier solvent with a bulk metal-doped aluminogallate nanocomposite to form a bulk metal-doped aluminogallate slurry and atomizing the bulk metal-doped aluminogallate slurry using a low temperature collision to produce a finely divided metal-doped aluminogallate nanocomposite, the composition of a nickel-doped aluminogallate nanocomposite (GAN), and a method of NO decomposition using the nickel-doped aluminogallate nanocomposite.Type: GrantFiled: June 27, 2017Date of Patent: November 21, 2017Assignee: KING FAHD UNIVERSITY OF PETROLEUM AND MINERALSInventors: Md Hasan Zahir, Alhooshani Khalid
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Patent number: 9815019Abstract: A nanocomposite membrane including ?-Al2O3 membrane support, a ?-Al2O3 intermediate layer that is 300-1200 nm thick and coats a surface of the membrane support, and a nanocomposite layer including SiO2 and Y2O3 that is 25-150 nm thick and coats a surface of the intermediate layer, wherein the nanocomposite layer is porous with an average largest radius micropore of 0.2-0.6 nm. A method of manufacturing the nanocomposite membrane, whereby the membrane support is coated with the ?-Al2O3, a silica source is hydrolyzed with a mixture of water, an alcohol solvent, and a Y source with a sol-gel technique yield a Si/Y sol-gel, the membrane support is dip coated with the Si/Y sol-gel, and the nanocomposite membrane is calcined. A method of separating a mixture of gas, whereby the mixture of gas is introduced into a permeance cell and fed through the nanocomposite membrane.Type: GrantFiled: August 22, 2017Date of Patent: November 14, 2017Assignee: King Fahd University of Petroleum and MineralsInventor: Md. Hasan Zahir
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Publication number: 20170291165Abstract: The present disclosure relates to a process for producing a finely divided metal-doped aluminogallate nanocomposite comprising mixing a carrier solvent with a bulk metal-doped aluminogallate nanocomposite to form a bulk metal-doped aluminogallate slurry and atomizing the bulk metal-doped aluminogallate slurry using a low temperature collision to produce a finely divided metal-doped aluminogallate nanocomposite, the composition of a nickel-doped aluminogallate nanocomposite (GAN), and a method of NO decomposition using the nickel-doped aluminogallate nanocomposite.Type: ApplicationFiled: June 27, 2017Publication date: October 12, 2017Applicant: KING FAHD UNIVERSITY OF PETROLEUM AND MINERALSInventors: Md Hasan Zahir, Alhooshani Khalid
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Patent number: 9770688Abstract: A nanocomposite membrane including an ?-Al2O3 membrane support, a ?-Al2O3 intermediate layer that is 300-1200 nm thick and coats a surface of the membrane support, and a nanocomposite layer including SiO2 and Y2O3 that is 25-150 nm thick and coats a surface of the intermediate layer, wherein the nanocomposite layer is porous with an average largest radius micropore of 0.2-0.6 nm. A method of manufacturing the nanocomposite membrane, whereby the membrane support is coated with the ?-Al2O3, a silica source is hydrolyzed with a mixture of water, an alcohol solvent, and a Y source with a sol-gel technique to yield a Si/Y sol-gel, the membrane support is dip coated with the Si/Y sol-gel, and the nanocomposite membrane is calcined. A method of separating a mixture of gas, whereby the mixture of gas is introduced into a permeance cell and fed through the nanocomposite membrane.Type: GrantFiled: October 22, 2015Date of Patent: September 26, 2017Assignee: King Fahd University of Petroleum and MineralsInventor: Md. Hasan Zahir
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Publication number: 20170239624Abstract: A semi-porous composite membrane and a method of manufacturing the semi-porous composite membrane. The semi-porous composite membrane includes a base supporting substrate comprising ?-Al2O3, an outer layer comprising silica, and an intermediate layer comprising crystalline fibers of boehmite, and at least one of a secondary metal oxide and a synthetic polymer, wherein the intermediate layer is disposed between the base supporting substrate and the outer layer. The crystalline fibers of boehmite are a length of 5-150 nm. The semi-porous composite membrane may be employed in membrane reactors.Type: ApplicationFiled: June 8, 2016Publication date: August 24, 2017Applicant: KING FAHD UNIVERSITY OF PETROLEUM AND MINERALSInventors: Md. Hasan ZAHIR, Alhooshani KHALID
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Publication number: 20170244126Abstract: Gadolinium-doped cerium oxide slurries used to form a patchwork type surface structure with nanoporous grain boundary prepared by mixing gadolinium-doped cerium oxide and a polymer binder to form a first mixture; wet-atomizing the first mixture under a pressure of at least 100 MPa to obtain a second mixture; coating the second mixture to a substrate to form in a coated substrate; and sintering the coated substrate. The patchwork type structure is a polygonal or honeycomb structure having a size of from 0.1 ?m to 3 ?m.Type: ApplicationFiled: April 17, 2017Publication date: August 24, 2017Applicant: KING FAHD UNIVERSITY OF PETROLEUM AND MINERALSInventors: Md Hasan ZAHIR, Haitham M. BAHAIDARAH
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Publication number: 20170239648Abstract: The present disclosure relates to a process for producing a finely divided metal-doped aluminogallate nanocomposite comprising mixing a carrier solvent with a bulk metal-doped aluminogallate nanocomposite to form a bulk metal-doped aluminogallate slurry and atomizing the bulk metal-doped aluminogallate slurry using a low temperature collision to produce a finely divided metal-doped aluminogallate nanocomposite, the composition of a nickel-doped aluminogallate nanocomposite (GAN), and a method of NO decomposition using the nickel-doped aluminogallate nanocomposite.Type: ApplicationFiled: February 19, 2016Publication date: August 24, 2017Applicant: KING FAHD UNIVERSITY OF PETROLEUM AND MINERALSInventors: Md Hasan ZAHIR, Alhooshani KHALID
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Patent number: 9737879Abstract: The present disclosure relates to a process for producing a finely divided metal-doped aluminogallate nanocomposite comprising mixing a carrier solvent with a bulk metal-doped aluminogallate nanocomposite to form a bulk metal-doped aluminogallate slurry and atomizing the bulk metal-doped aluminogallate slurry using a low temperature collision to produce a finely divided metal-doped aluminogallate nanocomposite, the composition of a nickel-doped aluminogallate nanocomposite (GAN), and a method of NO decomposition using the nickel-doped aluminogallate nanocomposite.Type: GrantFiled: February 19, 2016Date of Patent: August 22, 2017Assignee: King Fahd University of Petroleum and MineralsInventors: Md Hasan Zahir, Alhooshani Khalid