Patents by Inventor Abdullah Mohamed Asiri
Abdullah Mohamed Asiri 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: 10317356Abstract: A resistance-based humidity sensor including a moisture sensitive composite comprising a cellulose acetate and copper(II) oxide and a first electrode and a second electrode each in direct contact with the composite. Each electrode is connected to a circuit which can correlate a resistance of the composite to a measurement of a relative humidity. The method by which the sensor may measure a relative humidity in an environment includes applying a frequency through the first electrode, across the moisture sensitive composite, and through a second electrode to measure a change in the frequency that correlates to a resistance of the moisture sensitive composite and correlates to the relative humidity of the environment. A method of producing a resistance-based humidity sensor in the form of a film or in the form of a cell.Type: GrantFiled: March 13, 2017Date of Patent: June 11, 2019Assignee: King Abdulaziz UniversityInventors: Abdullah Mohamed Asiri, Muhammad Tariq Saeed Chani
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Publication number: 20180259471Abstract: A resistance-based humidity sensor including a moisture sensitive composite comprising a cellulose acetate and copper(II) oxide and a first electrode and a second electrode each in direct contact with the composite. Each electrode is connected to a circuit which can correlate a resistance of the composite to a measurement of a relative humidity. The method by which the sensor may measure a relative humidity in an environment includes applying a frequency through the first electrode, across the moisture sensitive composite, and through a second electrode to measure a change in the frequency that correlates to a resistance of the moisture sensitive composite and correlates to the relative humidity of the environment. A method of producing a resistance-based humidity sensor in the form of a film or in the form of a cell.Type: ApplicationFiled: March 13, 2017Publication date: September 13, 2018Applicant: King Abdulaziz UniversityInventors: Abdullah Mohamed ASIRI, Muhammad Tariq Saeed CHANI
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Patent number: 9976975Abstract: The method of making thin film humidity sensors uses thermal vapor deposition or drop casting techniques to fabricate nickel phthalocyanine-fullerene-based (NiPc-C60) quick response humidity sensors with negligible hysteresis. Prior to the deposition of aluminum electrodes, a glass substrate is cleaned by using acetone in an ultrasonic bath for 10 minutes. After cleaning, the substrate is washed with de-ionized water and then dried. A gap is created between two electrodes by masking the glass substrate with copper wire. This assembly is plasma-cleaned for 5 minutes in a thermal evaporator. Subsequently aluminum (Al) thin films are deposited on the assembly. Next, a mixture of equal parts NiPc-C60 is deposited onto the gap between the Al electrodes by thermal vapor deposition or by drop casting. A method of forming NiPc-graphene oxide (NiPc-GO) humidity sensors without using instrumentation drop casts an NiPc-GO suspension onto aluminum foil electrodes taped to a substrate.Type: GrantFiled: July 24, 2015Date of Patent: May 22, 2018Assignee: KING ABDULAZIZ UNIVERSITYInventors: Abdullah Mohamed Asiri, Muhammad Tariq Saeed Chani, Sher Bahadar Khan
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Publication number: 20180120257Abstract: An electrochemical cell that includes a working electrode, which comprises of is made of gold, with gold-coated carbon nanotubes secured thereon via a conductive binder, wherein the electrochemical cell is utilized to detect the presence of bisphenol-A, or to determine a concentration of bisphenol-A in a solution. Various embodiments of the electrochemical cell, a method of producing the electrochemical cell, and a method of using the electrochemical cell for determining a concentration of bisphenol-A in a solution are also provided.Type: ApplicationFiled: November 3, 2016Publication date: May 3, 2018Applicant: King Abdulaziz UniversityInventors: Abdullah Mohamed ASIRI, Mohammed Muzibur RAHMAN
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Patent number: 9847151Abstract: A method of fabricating and using of flexible elastic photo-thermoelectric or thermoelectric cells is being presented, where the thermoelectric materials have been used in nanohybrid (pristine form). The casing of the cells is made up of flexible elastic materials (plastic, rubber). The casing may have different shapes as rod, semi-circular, wave-form, spiral etc., that makes them easy for practical applications and the thermoelectric cells can potentially provide high efficiency. The flexible thermoelectric cells based on carbon nano-tubes (CNT) and its blend with cobalt oxide/graphene oxide nanohybrid have been made and tested.Type: GrantFiled: July 8, 2014Date of Patent: December 19, 2017Assignee: King Abdulaziz UniversityInventors: Abdullah Mohamed Asiri, Sher Bahadar Khan, Muhammad Tariq Saeed Chani, Khasan Karimov
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Publication number: 20170148969Abstract: A method of fabricating and using of flexible elastic photo-thermoelectric or thermoelectric cells is being presented, where the thermoelectric materials have been used in nanohybrid (pristine form). The casing of the cells is made up of flexible elastic materials (plastic, rubber). The casing may have different shapes as rod, semi-circular, wave-form, spiral etc., that makes them easy for practical applications and the thermoelectric cells can potentially provide high efficiency. The flexible thermoelectric cells based on carbon nano-tubes (CNT) and its blend with cobalt oxide/graphene oxide nanohybrid have been made and tested.Type: ApplicationFiled: July 8, 2014Publication date: May 25, 2017Inventors: ABDULLAH MOHAMED ASIRI, SHER BAHADAR KHAN, Muhammad Tariq Saeed Chani, Khasan Karimov
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Patent number: 9631989Abstract: The method of making a flexible elastic conductive material for strain sensor and resistance applications using rubbing-in technology is shown. The thin rubber or any conductive material (substrates) is fixed at strained condition on the solid plate, by rubbing-in technology. Nanopowder of nanomaterials (organic semiconductors, carbon nanotubes, copper doped tin oxide, manganese doped tin oxide) at room temperature are embedded into the rubber conductive material to make built-in structure of conductive flexible elastic substrates that can be used for strain sensors, gages and resistance applications. The resultant product showed good sensitivity, stability and reliability during and after the rubbing-in operation.Type: GrantFiled: February 15, 2016Date of Patent: April 25, 2017Assignee: King Abdulaziz UniversityInventors: Abdullah Mohamed Asiri, Sher Bahadar Khan, Khasan S Karimov
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Publication number: 20170023508Abstract: The method of making thin film humidity sensors uses thermal vapor deposition or drop casting techniques to fabricate nickel phthalocyanine-fullerene-based (NiPc-C60) quick response humidity sensors with negligible hysteresis. Prior to the deposition of aluminum electrodes, a glass substrate is cleaned by using acetone in an ultrasonic bath for 10 minutes. After cleaning, the substrate is washed with de-ionized water and then dried. A gap is created between two electrodes by masking the glass substrate with copper wire. This assembly is plasma-cleaned for 5 minutes in a thermal evaporator. Subsequently aluminum (Al) thin films are deposited on the assembly. Next, a mixture of equal parts NiPc-C60 is deposited onto the gap between the Al electrodes by thermal vapor deposition or by drop casting. A method of forming NiPc-graphene oxide (NiPc-GO) humidity sensors without using instrumentation drop casts an NiPc-GO suspension onto aluminum foil electrodes taped to a substrate.Type: ApplicationFiled: July 24, 2015Publication date: January 26, 2017Inventors: ABDULLAH MOHAMED ASIRI, MUHAMMAD TARIQ SAEED CHANI, SHER BAHADAR KHAN
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Patent number: 9538924Abstract: A strain sensor fabrication and its use as flexible elastic heart strain sensors in form of a Wheatstone bridge are described. All arms of the bridge are nanocomposite based strain sensors. The silver selenide nanocomposite is especially developed by simple rubbing in method where the nanomaterials such as carbon nanotubes (CNTs) and Ag2Se nanoparticles are embedded into a porous rubber. This is a low cost easy to make strain sensor that has excellent resistance to humidity and temperature.Type: GrantFiled: September 22, 2015Date of Patent: January 10, 2017Assignee: King Abdulaziz UniversityInventors: Abdullah Mohamed Asiri, Sher Bahadar Khan, Muhammad Tariq Saeed Chani, Khasan S Karimov
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Patent number: 8940183Abstract: A novel composition for a photocatalyst Fe doped ZnO nano-particle photocatalyst that enables the decontamination process by degrading toxic organic material such as brilliant cresyl blue, indigo carmine and gentian blue by using solar light is described. In the current disclosure method of making a specific size of the nano photocatalyst is described. Characterization of the photocatalyst, optimal working conditions and efficient use of solar light has been described to show that this photocatalyst is unique. The process described to use the photocatalyst to degrade toxic organic material using the solar light to activate the photocatalyst is cost efficient and cheap to clean our water resources.Type: GrantFiled: March 6, 2014Date of Patent: January 27, 2015Assignee: King Abdulaziz UniversityInventors: Abdullah Mohamed Asiri, Sher Bahadar Khan, Khalid Ahmad Alamry, Mohammed M Rahman, Mohamed Saeed Alamoodi
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Publication number: 20140183404Abstract: A novel composition for a photocatalyst Fe doped ZnO nano-particle photocatalyst that enables the decontamination process by degrading toxic organic material such as brilliant cresyl blue, indigo carmine and gentian blue by using solar light is described. In the current disclosure method of making a specific size of the nano photocatalyst is described. Characterization of the photocatalyst, optimal working conditions and efficient use of solar light has been described to show that this photocatalyst is unique. The process described to use the photocatalyst to degrade toxic organic material using the solar light to activate the photocatalyst is cost efficient and cheap to clean our water resources.Type: ApplicationFiled: March 6, 2014Publication date: July 3, 2014Applicant: KING ABDULAZIZ UNIVERSITYInventors: ABDULLAH MOHAMED ASIRI, SHER BAHADAR KHAN, KHALID AHMAD ALAMRY, MOHAMMED M. RAHMAN, MOHAMED SAEED ALAMOODI
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Patent number: 8709262Abstract: Toxic organic materials contaminate water resources and one need to find an easy and energy efficient way to decontaminate water resources. The current invention discloses a photocatalyst Fe doped ZnO nano-particle photocatalyst that enables the decontamination process by degrading toxic organic material such as brilliant cresyl blue, indigo carmine and gentian blue by using solar light. In the current disclosure many examples of characterization of the photocatalyst, optimal working conditions and efficient use of solar light has been described. The process described to use the photocatalyst to degrade toxic organic material using the solar light to activate the photocatalyst is cost efficient and cheap to clean our water resources.Type: GrantFiled: January 9, 2013Date of Patent: April 29, 2014Assignee: King Abdulaziz UniversityInventors: Abdullah Mohamed Asiri, Sher Bahadar Khan, Khalid Ahmad Alamry, Mohammed M Rahman, Mohamed Saeed Alamoodi
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Patent number: 8258300Abstract: The azo dyes relate to thiophene azo dyes of the general formula: where R1 is Cyano or C1-C5 alkoxy carbonyl; R2 is hydrogen, halogene, C1-C2 alkyl, phenyl, or substituted phenyl; and R3 is C1-C5 alkoxy carbonyl, C1-C4 alkanoyl, benzoyl, phenyl, alkyl substituted phenyl, or alkoxy phenyl; or R2 and R3 are fused cycloalkane with C3-C5.Type: GrantFiled: September 29, 2008Date of Patent: September 4, 2012Assignee: King Abdulaziz UniversityInventor: Abdullah Mohamed Asiri
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Publication number: 20100081823Abstract: The azo dyes relate to thiophene azo dyes of the general formula: where R1 is Cyano or C1-C5 alkoxy carbonyl; R2 is hydrogen, halogene, C1-C2 alkyl, phenyl, or substituted phenyl; and R3 is C1-C5 alkoxy carbonyl, C1-C4 alkanoyl, benzoyl, phenyl, alkyl substituted phenyl, or alkoxy phenyl; or R2 and R3 are fused cycloalkane with C3-C5.Type: ApplicationFiled: September 29, 2008Publication date: April 1, 2010Inventor: Abdullah Mohamed Asiri