Patents Assigned to King Abdulaziz University
  • System and method for determining unknown radio frequencies
    Patent number: 11223432
    Abstract: An apparatus for determining unknown radio frequencies is described. The apparatus modulates a first optical signal from tunable optical source with RF signal that includes unknown center frequency value to generate modulated optical signal. The apparatus combines modulated optical signal with second optical signal to generate combined modulated optical signal. The apparatus receives output electrical signal from photodetector in response to receiving combined modulated optical signal at photodetector, splits output electrical signal into first output electrical signal and second output electrical signal, and filter first output electrical signal by applying first optical bandpass filter centered to generate first filtered RF signal. The apparatus tunes tunable optical source to first beat frequency value to determine unknown frequency value of RF signal.
    Type: Grant
    Filed: August 9, 2021
    Date of Patent: January 11, 2022
    Assignee: King Abdulaziz University
    Inventors: Abdulah Jeza Aljohani, Salman Ghafoor, Ammar Khalid
  • Intranasal MERS-CoV vaccine
    Patent number: 11219685
    Abstract: An immunogenic CD40-targeted trimeric MERS-CoV S1 fusion polypeptide as well as a corresponding polynucleotide encoding it and its use for safely inducing immune responses directed against MERS-CoV without inducing vaccine associated respiratory pathologies associated with non-targeted vaccines.
    Type: Grant
    Filed: September 24, 2021
    Date of Patent: January 11, 2022
    Assignee: King Abdulaziz University
    Inventor: Anwar M. Hashem
  • Dental cosmetic scalpel
    Patent number: 11219504
    Abstract: A scalpel that safely and efficiently removes excess dental composite from the surfaces of teeth. A method for removing excess dental composite from a dental surface using this dental scalpel.
    Type: Grant
    Filed: September 23, 2021
    Date of Patent: January 11, 2022
    Assignee: King Abdulaziz University
    Inventors: Fahad Ibrahim Fatiny, Helal M. Sunbol, Turki Y. Alhazzazi
  • Multi-angle spinneret for forming hollow fiber
    Patent number: 11220761
    Abstract: A multi-angle spinneret for forming hollow fibers is provided. The multi-angle spinneret includes a body defining a dope chamber, a bore needle channel, and multiple dope channels being oriented at a minimum of two distinct dope channel angles relative to the dope chamber. The body includes a bore needle disposed in the bore needle channel and oriented substantially perpendicular relative to the dope chamber. The bore needle extends though the dope chamber, such that a bore fluid flow through the bore needle is kept separate from a dope flow through the dope channels. A bore fluid outlet is positioned within a dope outlet of the dope chamber, such that a bore fluid flow out of the bore fluid outlet is substantially coaxial with and substantially centered within a dope flow out of the dope outlet.
    Type: Grant
    Filed: August 30, 2021
    Date of Patent: January 11, 2022
    Assignee: King Abdulaziz University
    Inventors: Iqbal Ahmed Moujdin, Rosli Bin Mohd Yunus
  • Hydraulically actuated solar energy tracking and harvesting system
    Patent number: 11223321
    Abstract: A photovoltaic system includes a photovoltaic cell including a sun tracker, a top surface configured to generate electrical energy from the incident sunlight, and a bottom surface configured to thermally dispel heat generated by the photovoltaic cell; at least one mirror including a reflective surface; a plurality of actuators securing the at least one mirror the photovoltaic cell; at least one actuator pump connected to the plurality of actuators and configured to extend or retract the plurality of actuators and adjust the distance of the at least one mirror from the top surface; a heat exchanger thermally coupled to the bottom surface of the photovoltaic cell; and a fluid pump connected to the heat exchanger and configured to circulate the fluid through the heat exchanger.
    Type: Grant
    Filed: August 4, 2021
    Date of Patent: January 11, 2022
    Assignee: King Abdulaziz University
    Inventor: Hussain Bassi
  • Method for contouring a dental restoration
    Patent number: 11219503
    Abstract: A scalpel that safely and efficiently removes excess dental composite from the surfaces of teeth. A method for removing excess dental composite from a dental surface using this dental scalpel.
    Type: Grant
    Filed: June 4, 2021
    Date of Patent: January 11, 2022
    Assignee: King Abdulaziz University
    Inventors: Fahad Ibrahim Fatiny, Helal M. Sunbol, Turki Y. Alhazzazi
  • Metal nanoparticle medicine with a mixture of natural ligands
    Patent number: 11219605
    Abstract: A nanomedicine for the treatment of obesity comprising either noble metal nanoparticles having surface ligands comprising a mixture comprising (+)-catechin (2R,3S) and gingerol or particles of a carbon nanomaterial having an adsorbed mixture comprising (+)-catechin (2R,3S) and gingerol. Also provided are a method for making the noble metal nanomedicine and the carbon nanomedicine. The nanomedicine is used in a method of treating obesity.
    Type: Grant
    Filed: August 20, 2021
    Date of Patent: January 11, 2022
    Assignee: King Abdulaziz University
    Inventors: Imran Kazmi, Syed Sarim Imam, Muhammad Afzal, Muhammad Shahid Nadeem, Fahad A. Al-Abbasi, Firoz Anwar
  • Microchip electrochemical cell assembly
    Patent number: 11221309
    Abstract: 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: Grant
    Filed: July 31, 2020
    Date of Patent: January 11, 2022
    Assignee: King Abdulaziz University
    Inventors: Abdullah Mohamed Asiri, Mohammed Muzibur Rahman
  • Method of determining an aqueous bisphenol-A concentration
    Patent number: 11215576
    Abstract: 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: Grant
    Filed: July 31, 2020
    Date of Patent: January 4, 2022
    Assignee: King Abdulaziz University
    Inventors: Abdullah Mohamed Asiri, Mohammed Muzibur Rahman
  • Communications device with antenna-based spectrum sensing without gaussian assumption
    Patent number: 11218885
    Abstract: A method for spectrum sensing for cognitive radio includes performing a process of local spectrum sensing using receive beamforming and energy detection at each of a plurality of secondary users included in a cognitive radio network, wherein the process of local spectrum sensing decides between two hypotheses corresponding to absence and presence of a primary user, the two hypotheses being formulated using a primary user signal, a plurality of co-channel interferences, and sensing noise, the primary user signal, the plurality of co-channel interferences, and the sensing noise being received at each of the plurality of secondary users, and a set of beamforming weights of the receive beamforming is determined by optimizing a probability of detection and constraining a probability of false alarm.
    Type: Grant
    Filed: June 25, 2021
    Date of Patent: January 4, 2022
    Assignee: King Abdulaziz University
    Inventors: Muhammed Moinuddin, Ubaid M. Al-Saggaf, Mohammed A. Alrefaei, Jawwad Ahmad
  • Method of treating colorectal cancer
    Patent number: 11214556
    Abstract: A compound of formula (I), wherein R1 is an optionally substituted aryl or an optionally substituted heteroaryl, R2 is an optionally substituted aryl or an optionally substituted heteroaryl, and R3 is an optionally substituted alkylamino, an optionally substituted cycloalkylamino, an optionally substituted arylamino, an optionally substituted heterocyclylamino, an optionally substituted heterocyclyl, and an optionally substituted dialkylamino. A pharmaceutical composition which includes the compound of formula (I) and a pharmaceutically acceptable carrier and/or excipient. A method of treating colorectal cancer in a subject, whereby a therapeutically effective amount of the compound of formula (I) is administered to the subject.
    Type: Grant
    Filed: September 24, 2021
    Date of Patent: January 4, 2022
    Assignee: King Abdulaziz University
    Inventors: Moustafa E. El-Araby, Abdelsattar M. Omar, Martin K. Safo, Radwan S. Elhaggar, Tamer M. Abdelghany, Mostafa H. Ahmed
  • Method for making anti-cancer compounds
    Patent number: 11214537
    Abstract: Therapeutic compounds containing a phenyl core and amide link(s). Also described are pharmaceutical compositions incorporating the therapeutic compounds and a method for treating cancer with the compounds. These compounds are cytotoxic to stomach, colon, breast, and leukemia cancer cell lines via dual inhibition of Src kinases and tubulin.
    Type: Grant
    Filed: July 16, 2021
    Date of Patent: January 4, 2022
    Assignee: King Abdulaziz University
    Inventors: Moustafa E. El-Araby, Abdelsattar M. Omar, Maan T. Khayat, Dhaval Shah, Martin K. Safo, Azizah M. Malebari, Farid Ahmed
  • Method of linear active disturbance rejection control for fractional order systems
    Patent number: 11215977
    Abstract: A fractional order Linear Active Disturbance Rejection Control (FOLADRC) system and a method thereof is disclosed. The FOLADRC system includes a fractional order state extended observer (FESO) controller circuit having a FESO controller. The FESO controller receives a process variable and plant output signal, estimates an input disturbance and an output disturbance and outputs disturbance cancelling feedback signals. The disturbance cancelling feedback signals are transmitted to multipliers present in a forward path of the FESO controller circuit. Further, the FESO controller has an observer gain vector and a cross over frequency bandwidth. The FESO controller incrementally changes the observer gain vector and the FESO controller bandwidth until a closed loop transfer function of the FESO controller converges, thus exhibiting an iso-damping property.
    Type: Grant
    Filed: June 15, 2021
    Date of Patent: January 4, 2022
    Assignee: King Abdulaziz University
    Inventors: Ubaid M. Al-Saggaf, Abdulrahman U. Alsaggaf, Muhammad Moinuddin, Maamar Bettayeb, Rachid Mansouri
  • Elastomeric iron/graphene nanocomposite
    Patent number: 11214671
    Abstract: A conductive nanocomposite which contains a mixed polymer matrix which contains a rubber and a polyether, carbon nanoparticles, and transition metal nanoparticles. The conductive nanocomposite has a nonlinear relationship between resistivity and temperature characterized by an exponential increase reaching a peak resistivity followed by an exponential decrease as temperature increases. Also disclosed is a method of forming the conductive nanocomposite involving mixing the components, aging, and pressing. The conductive nanocomposite forms a component of a heater that is self-regulating as a result of the nonlinear relationship between resistivity and temperature of the conductive nanocomposite. The nanocomposite also forms a component of a thermistor.
    Type: Grant
    Filed: March 12, 2021
    Date of Patent: January 4, 2022
    Assignees: King Abdulaziz University, King Khalid University
    Inventors: Ahmed A. Al-Ghamdi, Abdullah G. Al-Sehemi, Abul Kalam, Aysegul Dere, Fahrettin Yakuphanoglu
  • Polyester nanocomposites for protection from hazardous radiation used for medical applications
    Patent number: 11217354
    Abstract: A radiation shielding material is fabricated by providing a mixture of a polyester polymer and lead oxide. The material can be formed by the open mold cast technique. A nanocomposite material comprising at least 10% lead oxide is used to provide shielding for diagnostic or medium x-rays. A formulation comprising 40% of lead oxide nanofiller embedded in a polyester matrix performed best at attenuation of diagnostic and medium x-ray levels.
    Type: Grant
    Filed: October 6, 2020
    Date of Patent: January 4, 2022
    Assignee: King Abdulaziz University
    Inventor: Hossam Elsayed Donya
  • Thallium doped gadolinium chalcogenide nanocomposite
    Patent number: 11215559
    Abstract: A fluorescent nanocomposite which includes a thallium doped gadolinium chalcogenide having formula TlxGd1-xY, wherein x is 0.01 to 0.1, and Y is selected from the group consisting of S, Se, or Te, and a benzothiazolium salt bound to a surface of the thallium doped gadolinium chalcogenide. A method of detecting antimony ions in a fluid sample whereby the fluid sample is contacted with the fluorescent nanocomposite to form a mixture, and a fluorescence emission profile of the mixture is measured to determine a presence or absence of antimony ions in the fluid sample, wherein a reduction in intensity of a fluorescence emissions peak associated with the fluorescent nanocomposite indicates the presence of antimony ions in the fluid sample.
    Type: Grant
    Filed: July 16, 2021
    Date of Patent: January 4, 2022
    Assignee: King Abdulaziz University
    Inventors: Waleed Elsayed Mahmoud Elsayed, Ahmed Abdullah Salem Al-Ghamdi, Yusuf Abdulaziz Al-Turki
  • SHOE EXTENSION FOR PATIENT GAIT MODIFICATION
    Publication number: 20210401111
    Abstract: A shoe extension for gait modification includes a vamp section, a base section, an attachment strap, and a restraining mechanism. The vamp section is connected to a top surface of the base section forming a receiving slot. A toe box of a shoe worn on a healthy limb is slidably positioned into the receiving slot such that the base section is positioned along an outsole of the shoe. The attachment strap is utilized to establish a connection with the shoe. By increasing an overall length of the footwear worn on the healthy limb, a speed of motion of the healthy limb may be reduced in order to increase weight bearing on the unhealthy limb. The restraining mechanism, which is preferably integrated into a bottom surface of the base section, may also be used to reduce the speed of motion of the healthy limb.
    Type: Application
    Filed: June 26, 2020
    Publication date: December 30, 2021
    Applicant: King Abdulaziz University
    Inventors: Nazeeh ALOTHMANY, Ehab Hafiz WALI, Abdulhameed Fouad ALKHATEEB, Umar M. ALABASI, Mirza PASOVIC
  • Method for generating mechanical energy from sunlight
    Patent number: 11209194
    Abstract: A solar energy powered Stirling duplex cooler is presented which includes a Stirling engine and a Stirling cooler. The Stirling engine drives the Stirling cooler to produce cold temperatures for refrigeration or air conditioning. The Stirling duplex cooler includes a solar concentrator to focus high temperature solar radiation upon the Stirling engine expansion space. The Stirling duplex cooler further includes a thermal storage tank to receive and store heat rejected from the cooler expansion space. This stored heat is used to operate the cooler at night. A flywheel connected operatively to engine and cooler expansion space pistons and a crankshaft connected operatively to engine and cooler compression space pistons actuate the pistons to move a working fluid between the expansion and compression spaces.
    Type: Grant
    Filed: September 23, 2021
    Date of Patent: December 28, 2021
    Assignee: King Abdulaziz University
    Inventor: Majed Moalla Alhazmy
  • Quantum dot nanocomposite containing benzothiazolium
    Patent number: 11209366
    Abstract: A fluorescent nanocomposite which includes a thallium doped gadolinium chalcogenide having formula TlxGd1-xY, wherein x is 0.01 to 0.1, and Y is selected from the group consisting of S, Se, or Te, and a benzothiazolium salt bound to a surface of the thallium doped gadolinium chalcogenide. A method of detecting antimony ions in a fluid sample whereby the fluid sample is contacted with the fluorescent nanocomposite to form a mixture, and a fluorescence emission profile of the mixture is measured to determine a presence or absence of antimony ions in the fluid sample, wherein a reduction in intensity of a fluorescence emissions peak associated with the fluorescent nanocomposite indicates the presence of antimony ions in the fluid sample.
    Type: Grant
    Filed: August 23, 2021
    Date of Patent: December 28, 2021
    Assignee: King Abdulaziz University
    Inventors: Waleed Elsayed Mahmoud Elsayed, Ahmed Abdullah Salem Al-Ghamdi, Yusuf Abdulaziz Al-Turki
  • Center of gravity based control apparatus for research and education
    Patent number: 11210969
    Abstract: An educational tool for testing and demonstrating center of gravity based control. The educational tool includes a swing, a rod assembly operatively connected to the swing, a motor operatively connected to the rod assembly, at least one encoder for generating position signals, an interface box operatively connected to the motor and the encoder, and a computing device operatively connected to the interface box. The computing device receives the position signals from the interface box, analyze the position signals to determine a center of gravity of the swing and the rod assembly, and generate motor control signals to adjust the swing and the rod assembly to a stable pose. The interface box transmits the motor control signals to the motor and transmits the position signals from the encoder to the computing device.
    Type: Grant
    Filed: June 16, 2021
    Date of Patent: December 28, 2021
    Assignee: King Abdulaziz University
    Inventors: Ubaid M. Al-Saggaf, Abdulrahman U. Alsaggaf, Asmaa Ubaid Al-Saggaf, Ahmed Ubaid Al-Saggaf, Zahraa Ubaid Al-Saggaf