Patents Assigned to King Abdulaziz City for Science and Technology (KACST)
  • Patent number: 11091443
    Abstract: Provided herein are substituted haloimidazole crystals, the substituted haloimidazole crystal comprising a substituted haloimidazole compound wherein the substituents are selected from the group consisting of hydrogen, an alkyl, and a halogen. The substituted haloimidazole crystals may further comprise second substituted haloimidazole. The substituted haloimidazole crystals may be piezoelectric, ferroelectric, flexible, or any combination thereof. Also provided herein are methods for preparing substituted haloimidazole crystals.
    Type: Grant
    Filed: April 12, 2017
    Date of Patent: August 17, 2021
    Assignees: NORTHWESTERN UNIVERSITY, KING ABDULAZIZ CITY FOR SCIENCE AND TECHNOLOGY (KACST), UCHICAGO ARGONNE, LLC
    Inventors: Magdalena Owczarek, Karl A. Hujsak, Daniel P. Ferris, Aleksandrs Prokofjevs, Dravid P. Vinayak, James Fraser Stoddart, Daniel Seungbum Hong
  • Patent number: 11023680
    Abstract: The invention provides a method and system for automatically detecting semantic errors in a text. In order to detect the semantic errors in the text, the method generates a first set of features and a second set of features corresponding to each word in the text. A first set of features corresponds to statistical features of a word and a second set of features for a word corresponds to the features generated for a plurality of words surrounding the word in the text using matrix factorization techniques. The method, then, combines a first set of features and a second set of features to generate a third set of features corresponding to each word in the text. Thereafter, the method utilizes an Artificial Neural Network (ANN) model to detect semantic validity of each word based on a corresponding third set of features.
    Type: Grant
    Filed: February 17, 2016
    Date of Patent: June 1, 2021
    Assignee: THE KING ABDULAZIZ CITY FOR SCIENCE AND TECHNOLOGY (KACST)
    Inventors: Ibrahim A Almosallam, Manal N Almutery, Marwa M Khan, Lulwah M Al-Yahyan, Abdulrahman I Almuhareb, Mohamed I Alkanhal
  • Publication number: 20210122767
    Abstract: Provided herein are rigid macrocycles comprising a poly(peri-naphthalene) diimide (PPNDI) submit and a second diimide subunit having both high photoluminescent and electron accumulation activities. Also provided herein are methods of preparation of the rigid macrocycles and methods of using the same.
    Type: Application
    Filed: January 21, 2019
    Publication date: April 29, 2021
    Applicants: Northwestern University, King Abdulaziz City for Science and Technology (KACST)
    Inventors: Siva Krishna Mohan Nalluri, James Fraser Sioddart
  • Patent number: 10981792
    Abstract: A 3D structure of the graphite-titanium-nanocomposite complex and a method of preparing the graphite-titanium-nanocomposite complex are disclosed. The Graphite-titanium-nanocomposite complex includes a metal core associated with the two phases, amine functionalized graphite, and amine functionalized titanium. The method of preparation includes amine functionalizing of graphite and titanium with coupling agents to produce amine functionalized titanium and graphite, further mixing with a metal ion solution for synthesizing an ion complex. Trisodium citrate solution and sodium borohydride solution is added to the ion complex to prepare a 3D structure of the graphite-titanium-nanocomposite complex, employed as a catalyst.
    Type: Grant
    Filed: May 27, 2020
    Date of Patent: April 20, 2021
    Assignee: THE KING ABDULAZIZ CITY FOR SCIENCE AND TECHNOLOGY (KACST)
    Inventors: Nezar Hassan M Khdary, Waleed Saad Ibrahim Alkhuraiji
  • Publication number: 20210062365
    Abstract: Disclosed herein are crystalline compositions comprising tessellated rigid triangular macrocycles in a two-dimensional plane and methods of making the same.
    Type: Application
    Filed: August 28, 2020
    Publication date: March 4, 2021
    Applicants: NORTHWESTERN UNIVERSITY, King Abdulaziz City for Science and Technology (KACST)
    Inventors: James Fraser Stoddart, Yassine Beldjoudi
  • Patent number: 10870067
    Abstract: The invention provides a method and apparatus for purifying water. The apparatus includes a water still for receiving water and a hot air maintained in a heat-exchanging relationship to obtain a hot water and a cold air. The apparatus also includes one or more water purification units configured to receive the hot water from the water still in which the hot water is further heated using thermal energy received from one or more thermal energy sources to obtain steam and waste matter. A water purification unit of the one or more water purification units includes a waste matter remover for removing the waste matter from the water purification unit. The water still includes a heat-exchanging unit configured to receive the steam from the one or more water purification units. The steam received at the heat-exchanging unit is condensed to obtain purified water within the heat-exchanging unit using the cold air.
    Type: Grant
    Filed: October 19, 2015
    Date of Patent: December 22, 2020
    Assignee: KING ABDULAZIZ CITY FOR SCIENCE AND TECHNOLOGY (KACST)
    Inventor: Mazen A Ba-abbad
  • Patent number: 10727796
    Abstract: The invention provides a Low-voltage Differential Signaling (LVDS) receiver circuit that comprises a folded-cascode operational transconductance amplifier (OTA) that includes a pair of input branches and a pair of output branches. The pair of input branches of the folded-cascode OTA includes a p-channel metal-oxide semiconductor (PMOS) input transistor pair connected to a first supply voltage domain. The pair of output branches includes an output circuit connected to a second supply voltage domain. The LVDS receiver circuit further includes a common-mode feedback circuit connected to the pair of output branches of the folded-cascode OTA that controls the second supply voltage domain. The LVDS receiver circuit further includes a regenerative buffer circuit connected to the pair of output branches of the folded-cascode OTA and an output generated from the pair of output branches of the folded-cascode OTA directly operates the regenerative buffer circuit to produce a distortion-free output signal.
    Type: Grant
    Filed: August 17, 2016
    Date of Patent: July 28, 2020
    Assignee: THE KING ABDULAZIZ CITY FOR SCIENCE AND TECHNOLOGY (KACST)
    Inventors: Mohammed Sulaiman BenSaleh, Syed Arsalan Jawed, Yasir Mehmood Siddiqi, Waqas Siddiqi, Shahab Ahmed Najmi
  • Patent number: 10685835
    Abstract: A III-nitride tunnel junction with a modified p-n interface, wherein the modified p-n interface includes a delta-doped layer to reduce tunneling resistance. The delta-doped layer may be doped using donor atoms comprised of Oxygen (O), Germanium (Ge) or Silicon (Si); acceptor atoms comprised of Magnesium (Mg) or Zinc (Zn); or impurities comprised of Iron (Fe) or Carbon (C).
    Type: Grant
    Filed: November 1, 2016
    Date of Patent: June 16, 2020
    Assignees: THE REGENTS OF THE UNIVERSITY OF CALIFORNIA, KING ABDULAZIZ CITY FOR SCIENCE AND TECHNOLOGY (KACST)
    Inventors: Benjamin P. Yonkee, Erin C. Young, John T. Leonard, Tal Margalith, James S. Speck, Steven P. DenBaars, Shuji Nakamura
  • Patent number: 10627161
    Abstract: A laboratory equipment having an inlet and outlet tube for gas to enter and exit using specific shaped tubes with multi-outlet apertures in form of a network to allow the gas to enter the drying chamber to dry the material. The specific shaped tubes are in crescent shape and cross each other to have maximum surface area exposure to the drying chamber and effectively contact the material that is being dried. A gas inlet valve and outlet valve control the flow, pressure and temperature of the gas that is being used for drying the material to make nano material. A method of using the laboratory equipment with special gas inlet tubes is used for drying the material in form a slurry to make dry nano material.
    Type: Grant
    Filed: January 24, 2018
    Date of Patent: April 21, 2020
    Assignee: KING ABDULAZIZ CITY FOR SCIENCE AND TECHNOLOGY (KACST)
    Inventors: Mohammed Ahmad S. Alshamsi, Sulaiman Mohammed Alfadul
  • Patent number: 10576448
    Abstract: Disclosed is a device for automated synthesis of homogenous slurry of metal nanoparticles operating under redox controlled conditions by wet chemical reaction method. Device comprises a three-layer reactor unit, multi-feed covering unit, an electric stirring unit system and ground fixing foundation unit.
    Type: Grant
    Filed: June 28, 2017
    Date of Patent: March 3, 2020
    Assignee: THE KING ABDULAZIZ CITY FOR SCIENCE AND TECHNOLOGY (KACST)
    Inventors: Mohammed Ahmad S Alshamsi, Sulaiman Mohammed Alfadul, Ahmad S Alshamari
  • Patent number: 10450441
    Abstract: The invention provides a solid state dye laser and methods for preparing the solid state dye laser. The solid state dye laser includes a porous copolymer membrane of poly(vinylidenefloride-cohexafluoroproplyne (PVDF-HFP) and a laser dye. The laser dye is incorporated in pores of the copolymer membrane. The solid state dye laser is prepared using one of a phase inversion technique, a phase separation technique, and a breath figure technique.
    Type: Grant
    Filed: October 1, 2015
    Date of Patent: October 22, 2019
    Assignee: The King Abdulaziz City for Science and Technology (KACST)
    Inventors: Nezar Hassan Khdary, Mamdouh E Abdelsalam
  • Patent number: 10384172
    Abstract: A thin film composite membrane includes an active layer on a support membrane, wherein the active layer includes at least two chemically distinct first and second crosslinked polyamide film sub-layers. The first film sub-layer includes a polyamide unit; and the second film sub-layer includes a copolyamide with two chemically distinct polyamide units. The first film sub-layer is closer to the support than is the second film sub-layer.
    Type: Grant
    Filed: February 6, 2017
    Date of Patent: August 20, 2019
    Assignees: International Business Machines Corporation, King Abdulaziz City for Science and Technology (KACST)
    Inventors: Radwan A. Alrasheed, Blake W. Davis, Jacquana T. Diep, Geraud J. Dubois, Young-Hye Na, Majed S. Nassar, Ankit Vora
  • Patent number: 10295497
    Abstract: A disposable screen-printed microchip based on an organic membrane sensitive layer is presented. The microchip is highly responsive for the determination of Lead(II). The microchip is composed of a composite sensitive material which comprises carbon nano-tubes “CNTs” and titanium (IV) oxide nano-particles embedded in a PVC membrane which was deposited on the surface of a plastic screen printed micro-electrode using a new methodology. The prepared disposable microchip provides a linear response for Pb2+ ions covering the concentration range of 1×10?6 to 1×10?1 mole L?1 with high sensitivity (49 mV), a long life span (>4 months) and short response time (10 s). The merits offered by the micro-sensor or microchip include small size, simple fabrication, mass production, integration feasibility and cost effectiveness and automation.
    Type: Grant
    Filed: June 28, 2016
    Date of Patent: May 21, 2019
    Assignee: King Abdulaziz City for Science and Technology (KACST)
    Inventors: Hassan Abdou Arida, Mohammad Ateeq AlDosari
  • Publication number: 20190127331
    Abstract: Provided herein are substituted haloimidazole crystals, the substituted haloimidazole crystal comprising a substituted haloimidazole compound wherein the substituents are selected from the group consisting of hydrogen, an alkyl, and a halogen. The substituted haloimidazole crystals may further comprise second substituted haloimidazole. The substituted haloimidazole crystals may be piezoelectric, ferroelectric, flexible, or any combination thereof. Also provided herein are methods for preparing substituted haloimidazole crystals.
    Type: Application
    Filed: April 12, 2017
    Publication date: May 2, 2019
    Applicants: NORTHWESTERN UNIVERSITY, KING ABDULAZIZ CITY FOR SCIENCE AND TECHNOLOGY (KACST), UCHICAGO ARGONNE, LLC
    Inventors: Magdalena Owczarek, Karl A. Hujsak, Daniel P. Ferris, Aleksandrs Prokofjevs, Dravid P. Vinayak, James Fraser Stoddart, Daniel Seungbum Hong
  • Patent number: 10259913
    Abstract: Disclosed herein are nanoactuating rotaxanes comprising a threading component, the threading component comprising a oligoviologen, and at least two macrocylic components, wherein the oligoviologen is threaded through each of the macrocylic components. Also disclosed are methods for making and using the rotaxanes.
    Type: Grant
    Filed: January 30, 2017
    Date of Patent: April 16, 2019
    Assignees: Northwestern University, King Abdulaziz City for Science and Technology (KACST)
    Inventors: James Fraser Stoddart, Yuping Wang, Marco Frasconi, Junling Sun
  • Patent number: 10239044
    Abstract: A separation medium consisting of a cyclodextrin metal-organic framework (CD-MOF) for separating aromatic compounds and methods of preparing the same are presented. Bottom-up preparations include the following steps: (a) preparing a first mixture comprising a cyclodextrin, an alkali metal salt, water and an alcohol; (b) performing one of the following two steps: (i) stirring the first mixture; or (ii) adding an amount of a surfactant to the first mixture to form a second mixture; and (c) crystallizing the CD-MOF from the first mixture or the second mixture. Top-down preparations include the following steps: (a) preparing a first mixture comprising the cyclodextrin, an alkali metal salt, water and an alcohol; (b) crystallizing the CD-MOF from the first mixture; and (c) optionally performing particle size reduction of the crystallized CD-MOF. The CD-MOFs are amenable for use in methods for separating alkylaromatic and haloaromatic compounds from a mixture of hydrocarbons.
    Type: Grant
    Filed: June 8, 2015
    Date of Patent: March 26, 2019
    Assignees: Northwestern University, King Abdulaziz City for Science and Technology (KACST)
    Inventors: James M. Holcroft, Karel J. Hartlieb, James Fraser Stoddart
  • Publication number: 20190077804
    Abstract: Provided herein are rigid macrocycles comprising a first redox-active subunit and a second redox-active subunit, wherein the first redox-active unit and the second redox-active unit are different subunits. Also provided herein are methods of preparation of the rigid macrocycles and use thereof, for example, in the first of energy generation and storage.
    Type: Application
    Filed: March 16, 2017
    Publication date: March 14, 2019
    Applicants: Northwestern University, KING ABDULAZIZ CITY FOR SCIENCE AND TECHNOLOGY (KACST)
    Inventors: James Fraser STODDART, Siva Krishna Mohan NALLURI, Zhichang LIU
  • Patent number: 10228343
    Abstract: An electrochemical sensor for an analyte is provided. The electrochemical sensor includes CDMOF-2. The CDMOF-2 is capable of binding reversibly to CO2 as an analyte, thereby quantitatively detecting the analyte in a mixture. The CDMOF-2 is formed from reaction of ?-cyclodextrin with RbOH in the presence of methanol.
    Type: Grant
    Filed: September 3, 2015
    Date of Patent: March 12, 2019
    Assignees: Northwestern University, King Abdulaziz City for Science and Technology (KACST)
    Inventors: James Fraser Stoddart, Jeremiah J. Gassensmith, Nak Cheon Jeong, Omar K. Farha
  • Patent number: 10078877
    Abstract: The invention provides a method and system for embedding a watermark in a digital image and recovering the watermark from the digital image. The method includes representing the plurality of binary bits in the watermark using a plurality of symbols, wherein each symbol of the plurality of symbols represents at least two binary bits. The plurality of symbols are then transformed into a plurality of pseudo noise (PN) sequences, wherein a symbol transformed into a PN sequence represents one or more PN sequence vectors from a set of PN sequence vectors. Once the transformation is done, the plurality of PN sequences are embedded in the digital image to generate a watermarked image. During recovery, the watermark is recovered from the watermarked image by identifying the plurality of PN sequences in the watermarked image for recovering the corresponding plurality of symbols associated with the watermark.
    Type: Grant
    Filed: November 23, 2015
    Date of Patent: September 18, 2018
    Assignee: THE KING ABDULAZIZ CITY FOR SCIENCE AND TECHNOLOGY (KACST)
    Inventors: Norah Alquwayfili, Amr Alasaad
  • Patent number: 9973441
    Abstract: The invention provides a method and system for routing broadcast messages by managing a plurality of observation tables in a wireless ad-hoc network having a plurality of nodes. The method includes receiving one or more broadcast messages from one or more second nodes at a first node and stores information received from the broadcast messages pertaining to the one or more second nodes in one or more observation tables at the first node. A maximum aposteriori probability of connectivity is then computed for the one or more second nodes based on the information in the one or more observation tables maintained at the first node utilizing Bayesian approach. Thereafter, the first node transmits broadcast messages to the one or more second nodes based on the maximum aposteriori probability of connectivity computed for the one or more second nodes from the first node.
    Type: Grant
    Filed: November 7, 2015
    Date of Patent: May 15, 2018
    Assignee: King Abdulaziz City of Science and Technology (KACST)
    Inventors: Amr Alasaad, Wafaa Alkhabbaz, Meshal Alshayea, Ammar Hazzazy