Patents Assigned to Khalifa University of Science and Technology
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Patent number: 11672504Abstract: The present disclosure is generally directed to a method for driving an ultrasonic transducer. The method includes coupling a driving electrode and a ground electrode of the ultrasonic transducer to a power supply and a ground, respectively, during a first time period based on a received drive signal. The method further includes decoupling the driving electrode and the ground electrode of the ultrasonic transducer from the power supply and the ground, respectively, to float the driving electrode and the ground electrode of the ultrasonic transducer during a second time period based on the received drive signal to store a charge between the driving electrode to the ground electrode.Type: GrantFiled: October 28, 2021Date of Patent: June 13, 2023Assignee: KHALIFA UNIVERSITY OF SCIENCE AND TECHNOLOGYInventors: Jerald Yoo, Judyta B. Tillak
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Patent number: 11666855Abstract: Apparatus, methods and uses for separating gas mixtures of at least two different gases under magnetic field and employing a membrane are described.Type: GrantFiled: July 14, 2017Date of Patent: June 6, 2023Assignee: Khalifa University of Science and TechnologyInventors: Georgios Karanikolos, Evangelos P. Favvas, Nikolaos S. Heliopoulos, Sergios K. Papageorgiou
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Patent number: 11666214Abstract: Methods and systems for measuring the intraocular pressure of an eye in a human. The methods include directing an acoustic incident wave at the surface of the eye to generate a reflected wave, measuring the coefficient of reflection of the incident and reflected waves, and determining the intraocular pressure of the eye from the coefficient of reflection. Also disclosed are methods of diagnosing glaucoma and/or intraocular hypertension.Type: GrantFiled: September 15, 2021Date of Patent: June 6, 2023Assignees: KHALIFA UNIVERSITY OF SCIENCE AND TECHNOLOGY, THE UNIVERSITY OF BIRMINGHAMInventors: Haider Butt, Khamis Essa, Matt Soanes, Nader Vahdati
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Patent number: 11655427Abstract: Described are methods for shortening the combustion delay of ammonia fuels and reducing the amount of NO formed during the combustion process. The methods include mixing ammonia with hydrogen peroxide and water to form a fuel mixture and then combusting the fuel mixture. Methods of powering an internal combustion engine with ammonia fuels are also described.Type: GrantFiled: November 9, 2021Date of Patent: May 23, 2023Assignee: KHALIFA UNIVERSITY OF SCIENCE AND TECHNOLOGYInventors: Dimitrios Kyritsis, Dimitrios Goussis
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Patent number: 11609174Abstract: A method for determining permeability of a porous medium is described which comprises the steps: a) obtaining a three-dimensional picture of the porous medium by an imaging system, b) dividing the three-dimensional picture into a number n of two-dimensional parallel slices, wherein n is an integer of 2 or more, c) identifying one or more pores in a first outermost slice (n1) using a grid which defines image pixels, d) identifying one or more pores in a second slice (n2) directly neighboring the first outermost slice (n1) using the same grid which defines image pixels as for the first outermost slice (n1), and e) labelling the one or more pores in the second slice (n2) as connected if at least one of its neighbours in the first outermost slice (n1) is a pore to give a number of connected pores as a connectivity result. Also described is a system comprising means for carrying out such a method.Type: GrantFiled: November 6, 2017Date of Patent: March 21, 2023Assignee: KHALIFA UNIVERSITY OF SCIENCE AND TECHNOLOGYInventors: Hasan Al Marzouqi, Sandra Vega, Huafeng Sun
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Patent number: 11586674Abstract: This invention relates to methods and systems for searching. It is particularly applicable to methods of searching which enable efficient identification of compatible portfolios. Embodiments of the invention propose methods of searching which address the huge search space issue associated with identifying compatible portfolios. In particular, embodiments of the invention start their search operations simultaneously from both sides by both trying to form valid portfolios from candidate products until a valid solution is found and trying to find conflicts from the defined compatibility rules until a conflict is found which leads to the conclusion that no valid solution exists. A conclusion from either process will stop the whole searching process which can significantly reduce blind and unnecessary searching in the whole search space.Type: GrantFiled: December 28, 2016Date of Patent: February 21, 2023Assignees: Khalifa University of Science and Technology, British Telecommunications plc, Emirates Telecommunications CorporationInventors: Di Wang, Ivan Boyd, Ahmad Al-Rubaie, Jason Ng
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Patent number: 11550100Abstract: Structures for a wavelength-division multiplexing filter and methods of forming a structure for a wavelength-division multiplexing filter. A waveguide core of the wavelength-division multiplexing filter includes a first bend having a first curvature and a second bend having a second curvature different than the first curvature. The structure further includes a waveguide core region having a first end surface, a second end surface, and a bend arranged between the first and second end surfaces. The bend is positioned over the first bend of the waveguide core in an overlapping relationship.Type: GrantFiled: March 16, 2021Date of Patent: January 10, 2023Assignees: GlobalFoundries U.S. Inc., Khalifa University of Science and TechnologyInventors: Yusheng Bian, Michal Rakowski, Roderick A. Augur, Marios Papadovasilakis, Sujith Chandran, Jaime Viegas, Yonas Gebregiorgis
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Patent number: 11504687Abstract: Described herein are coated chloride salt particles, including NaCl/TiO2 and NaCl/SiO2 core/shell particles, along with methods of making and using the same.Type: GrantFiled: October 11, 2017Date of Patent: November 22, 2022Assignees: Khalifa University of Science and Technology, National Center of MeteorologyInventors: Linda Yuan Zou, Mustapha Jouiad, Abdelali Zaki, Nabil El Hadri, Haoran Liang
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Patent number: 11506380Abstract: The location and morphology of an electrostatically manipulated flame can be controlled through the action of an electrostatic field on the flame, virtually independently of overall mixture composition and imposed strain rate. An electrostatically controlled burner can manipulate a position of a flame between an oxidizer source and a fuel source by way of one or more electrodes configured to produce an electrostatic field proximate to one of the fuel source and the oxidizer source.Type: GrantFiled: June 2, 2020Date of Patent: November 22, 2022Assignee: Khalifa University of Science and TechnologyInventor: Dimitrios C. Kyritsis
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Patent number: 11499101Abstract: The present invention relates to a method for the extraction of mercury from a mercury-containing hydrocarbon feed, and to the use of a hydrophilic deep eutectic solvent for the extraction of a mercury source from a hydrocarbon feed.Type: GrantFiled: November 28, 2017Date of Patent: November 15, 2022Assignee: KHALIFA UNIVERSITY OF SCIENCE AND TECHNOLOGYInventors: Cornelis J. Peters, Maaike Kroon, Samah Warrag, Donald Reinalda
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Patent number: 11480695Abstract: Devices, systems, and methods of using one or more memristors as a radiation sensor are enabled. A memristor can be attractive as a sensor due to its passive low power characteristics. Medical and environment monitoring are contemplated use cases. Sensing radiation as part of a security system (at an airport for example) and screening food for radiation exposure are also possible uses. The memristor as a radiation sensor may possibly provide an inexpensive and easy alternative to personal thermoluminescent dosimeters (TLD). Memristor devices with high current and low power operation may be attached with wearable plastic substrates. An example device includes two metal strips with a 50 ?m thick layer of TiO2 memristor material. The device may be made large relative to traditional memristors which are nanometers in scale but its increased thickness can significantly increase the probability of radiation interaction with the memristor material.Type: GrantFiled: July 15, 2021Date of Patent: October 25, 2022Assignee: Khalifa University of Science and TechnologyInventors: Baker Mohammad, Maguy Abi Jaoude, Heba Abunahla, Mahmoud Al-Qutayri, Curtis O'Kelly
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Patent number: 11478798Abstract: A 3D microfluidic device for use as an in vitro lymph node is described. The microfluidic device has a body with a semi-circular inner wall and a first channel located adjacent along the semi-circular inner wall, the first channel corresponding to a subcapsular sinus region of a lymph node, a second channel located adjacent the first channel, the second channel corresponding to a reticular network, and a bottom cavity and top cavity, centrally located, corresponding to a paracortex and follicle of a lymph node, respectively. The various compartments of the device are separated by circumferentially and horizontally located rows of micro-pillars. A lab-on-a-chip device incorporating the microfluidic device is also described.Type: GrantFiled: October 2, 2018Date of Patent: October 25, 2022Assignee: Khalifa University of Science and TechnologyInventors: Jeremy C M Teo, Cesare Stefanini, Amal Abdullah, Bisan Samara, Aya Shanti
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Patent number: 11472044Abstract: A variable stiffness joint and method to alter the stiffness of the joint with multiple stiffness levels is described wherein a plurality of stiffness bits (m) are used for enabling 2 m stiffness level variations for the joint. Each stiffness bit comprises an elastic element in mechanical connection with a clutch (21, 22, 23). The joint revolves with zero stiffness level when all the clutches (21, 22, 23) are disengaged whereas a clutch (21, 22, 23) involves one of the elastic elements which alter the stiffness of the joint. Engaging other clutches (21, 22, 23) involve more elastic elements for altering the joint stiffness and the resultant joint stiffness is determined by adding the stiffness values of all the involved springs (6, 7, 8).Type: GrantFiled: August 26, 2018Date of Patent: October 18, 2022Assignee: KHALIFA UNIVERSITY OF SCIENCE AND TECHNOLOGYInventors: Mohammad Awad, Dongming Gan, Jorge Dias, Lakmal Seneviratne
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Patent number: 11427767Abstract: The present invention relates to a method for the extraction of mercury from a mercury-containing hydrocarbon feed, and to the use of a hydrophilic deep eutectic solvent for the extraction of a mercury source from a hydrocarbon feed.Type: GrantFiled: November 28, 2017Date of Patent: August 30, 2022Assignee: KHALIFA UNIVERSITY OF SCIENCE AND TECHNOLOGYInventors: Cornelis J. Peters, Maaike Kroon, Samah Warrag, Donald Reinalda
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Patent number: 11397228Abstract: The present invention discloses imaging antenna and array by designing the system in the Ultra-high frequency (UHF) band 300 MHz-3 GHz with resolution comparable to high-frequency microwave imagers (i.e., super-resolution). To obtain high resolution at relatively low system cost and complexity, a novel modulated antenna array element design is disclosed. The antenna is basically small loop loaded with spiral resonator. The selection of the SR as a resonator provides for adequate miniaturization rate at the lower end of the microwave frequency range. A non-modulated version of this antenna has been conceived and yielded a resolution comparable to the 24 GHz antennas while operating at 426 MHz. The disclosed antenna element operating at 426 MHz produced images with very comparable attributes to the one obtained at 24 GHz.Type: GrantFiled: December 26, 2019Date of Patent: July 26, 2022Assignee: Khalifa University of Science and TechnologyInventor: Mohamed Abou-Khousa
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Patent number: 11346770Abstract: A fiber-optic salinity and temperature measurement includes a first Fabry-Perot interferometer and a second Fabry-Perot interferometer. Each of the Fabry-Perot interferometers includes a first optical fiber fusion spliced to a second optical fiber such that a relatively large cavity is formed between the fibers. The relatively large cavity forms the measurement chamber for each Fabry-Perot interferometer. The input port on each of the Fabry-Perot interferometers is coupled to an optical splitter such that a single optical signal input is provided to each Fabry-Perot interferometer. The output port on each of the Fabry-Perot interferometers is coupled to an optical combiner that combines the interference signal received from each of the Fabry-Perot interferometers. An optical signal analyzer coupled to an output port of the optical combiner determines the salinity and temperature of a sample material in the large cavity of the second Fabry-Perot interferometer.Type: GrantFiled: March 28, 2019Date of Patent: May 31, 2022Assignee: Khalifa University of Science and TechnologyInventors: Jaime Viegas, Raquel Flores, Ricardo Janeiro
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Patent number: 11318419Abstract: The present invention discloses a pressure converter system for sustainably forcing saline water through a semi-permeable membrane, comprising a hydraulic oil pump, a hydraulic oil cylinder comprising pressurized oil generated from the hydraulic oil pump, a sustainable energy source for powering the hydraulic oil pump, a saline water cylinder containing saline water, wherein the hydraulic oil cylinder and the saline water cylinder are connected using a piston and an electrical circuit for determining a direction of movement of the piston. This system may be developed to a stand-alone desalination facility comprising a ducted windmill that can harvest energy from a wide range of wind speeds, especially very low wind speeds. Because of the above, the present invention successfully converts mechanical energy to high pressure that is required to produce fresh water from saline water.Type: GrantFiled: November 12, 2019Date of Patent: May 3, 2022Assignee: Khalifa University of Science and TechnologyInventors: Emad Alhseinat, Rawdha Alhammadi, Ohoud Alyammahi, Shatha AlMarri, Bashar El-Khasawneh
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Patent number: 11320590Abstract: Structures for a polarizer and methods of fabricating a structure for a polarizer. A waveguide crossing includes a first arm and a second arm. A waveguide loop couples the first arm of the waveguide crossing to the second arm of the waveguide crossing. The waveguide crossing and the waveguide loop provide a structure for the polarizer.Type: GrantFiled: March 31, 2020Date of Patent: May 3, 2022Assignees: GlobalFoundries U.S. Inc., Khalifa University of Science and TechnologyInventors: Yusheng Bian, Sujith Chandran, Jaime Viegas, Humarira Zafar, Ajey Poovannummoottil Jacob
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Patent number: 11311855Abstract: An example method of removing hydrogen sulfide from an input gas includes exposing an adsorbent material to an input gas to obtain an output gas. A concentration of hydrogen sulfide of the output gas is less than a concentration of hydrogen sulfide of the input gas. The adsorbent material includes copper oxide, magnesium oxide, and aluminum oxide. An atomic ratio of copper to magnesium to aluminum of the adsorbent material is X:Y:Z, where X is greater than or equal to 0.6 and less than or equal to 0.9, where Y is greater than or equal to 0 and less than or equal to 0.2, where Z is greater than or equal to 0 and less than or equal to 0.2, and where X+Y+Z is equal to 1.Type: GrantFiled: October 13, 2015Date of Patent: April 26, 2022Assignees: Regents of the University of Minnesota, Khalifa University of Science and TechnologyInventors: Michael Tsapatsis, Veerappan Vaithilingam Balasubramanian, Yasser Al Wahedi, Saleh Al Hashimi
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Patent number: 11286831Abstract: Described herein are catalytic converter substrates or cores based on triply periodic minimal surfaces (TPMS) geometries, along with methods of making and using the same.Type: GrantFiled: May 2, 2017Date of Patent: March 29, 2022Assignee: Khalifa University of Science and TechnologyInventors: Rashid Kamel Abu Al-Rub, Oraib Gheath Al-Ketan