Patents Assigned to King Abdulaziz University
  • APPARATUS WITH SAW-TOOTHED BLADE FOR CUTTING TISSUE
    Publication number: 20220039820
    Abstract: A tissue splitting device for splitting a harvested soft tissue to provide a layer of tissue having a uniform thickness and methods for tissue transplantation using uniform layers of tissue.
    Type: Application
    Filed: October 21, 2021
    Publication date: February 10, 2022
    Applicant: King Abdulaziz University
    Inventors: Talal Mansoor H. ZAHID, Abdulhameed F. ALKHATEEB, Mohameed Mansour NADERSHAH, Emad Ali KHAN, Zuhair Saleh NATTO, Sana Ghazi Alawi ALATTAS
  • Cooling system with temperature rise indication capability
    Patent number: 11243020
    Abstract: A defrost or thaw measuring device has a dumbbell or hourglass-shaped rotatable compartment with a cavity, the cavity being partly filled with at least two phase change materials having different melting points. The measuring device may determine the time period of thawing at two or more temperature intervals in the refrigeration space.
    Type: Grant
    Filed: August 27, 2021
    Date of Patent: February 8, 2022
    Assignee: King Abdulaziz University
    Inventor: Laila Ahmed Salim Bahammam
  • Urchin-shaped nanocrystalline material
    Patent number: 11242410
    Abstract: The invention is directed to a simple and economical method for producing nanocrystalline cellulose from microcrystalline cellulose by contacting frozen concentrated sulfuric acid with microcrystalline cellulose, diluting the mixture in water and hair-shaped ice to hydrolyze the microcrystalline cellulose, and separating the NCC. Another aspect of the invention pertains to an apparatus for conducting this method which includes an acid resistant hydrolysis container having a cooling jacket containing a hollow stirrer each of which may be filled with liquid nitrogen.
    Type: Grant
    Filed: October 26, 2021
    Date of Patent: February 8, 2022
    Assignee: King Abdulaziz University
    Inventor: Sherif Shawki Zaki Hindi
  • Substrate integrated waveguide having space apart radiating elements formed on a substrate and a superstrate including pairs of wings and a reconfigurable metasurface for beam scanning the radiating elements
    Patent number: 11245200
    Abstract: The suprastructure over a substrate integrated waveguide (SIW) can provide for beam scanning utilizing a reconfigurable metasurface. The reconfigurable metasurface will have a plurality of PIN diode arrays that can be turned ON and OFF. In one design, the length of the reconfigurable metasurface is effectively enlarged or reduced in size to achieve beam scanning. In another design the tilt angle of the reconfigurable metasurface is adjusted to achieve beam scanning. The suprastructure also can be modified with metallic offset wings, where two or more pairs of offset wing can form a horn shaped element. The presence of the wings or horn, as well as control of the size and number of the wings can improve the gain of the SIW. These two suprastructure improvements may be used in combination, and they may be used over classical slotted SIWs or over an SIW with curved sections between consecutive slots.
    Type: Grant
    Filed: March 8, 2021
    Date of Patent: February 8, 2022
    Assignee: King Abdulaziz University
    Inventors: Hatem Malek Rmili, Abdulah Jeza Aljohani, Abdelkhalek Nasri, Raj Mittra
  • Culture plate aid
    Patent number: 11241691
    Abstract: A multiwell plate cover is provided, wherein the cover comprises a frame configured for attachment to a multiwell plate; a first movable guide member having two elongated side members that extend across the width of the plate, wherein a gap between the side members is substantially equal to a diameter of a single well in the multiwell plate and wherein the first movable guide member is slidable along the length of the frame; and a second movable guide member having two elongated side members that extend across the length of the plate, wherein a gap between the side members is substantially equal to a diameter of a single well in the multiwell plate and wherein the second movable guide member is slidable along the width of the frame, wherein the first and second movable guide member are configured to move independently from each other.
    Type: Grant
    Filed: November 18, 2020
    Date of Patent: February 8, 2022
    Assignee: King Abdulaziz University
    Inventor: Laila Ahmed Bahammam
  • Adjustable support for panel
    Patent number: 11242952
    Abstract: An adjustable support for a panel is provided to allow control of the height and the tilt angle of the panel. The support includes a hollow cylindrical base having an outer diameter D1; a first hollow piston having an outer diameter D2 threadably engaged with the base; a second hollow piston having an outer diameter D3 threadably engaged with the first piston; a third piston having an outer diameter D4 threadably engaged with the second piston, such that D1>D2>D3>D4. A ball pod extends from the third piston and accommodates a ball attached to the panel. One or more stepper motors are provided, where each stepper motor is coupled to a bottom portion of a respective piston, and a rotor of each stepper motor is configured to rotate the corresponding piston, thereby causing the piston to move along a longitudinal axis of the support.
    Type: Grant
    Filed: November 11, 2020
    Date of Patent: February 8, 2022
    Assignee: King Abdulaziz University
    Inventor: Mohannad Bayoumi
  • Sulfate-grafted nanocrystalline cellulose
    Patent number: 11242411
    Abstract: The invention is directed to a simple and economical method for producing nanocrystalline cellulose from microcrystalline cellulose by contacting frozen concentrated sulfuric acid with microcrystalline cellulose, diluting the mixture in water and hair-shaped ice to hydrolyze the microcrystalline cellulose, and separating the NCC. Another aspect of the invention pertains to an apparatus for conducting this method which includes an acid resistant hydrolysis container having a cooling jacket containing a hollow stirrer each of which may be filled with liquid nitrogen.
    Type: Grant
    Filed: October 26, 2021
    Date of Patent: February 8, 2022
    Assignee: King Abdulaziz University
    Inventor: Sherif Shawki Zaki Hindi
  • Method for oxidative cracking of hydrocarbon
    Patent number: 11241672
    Abstract: A nanomaterial catalyst comprising a partially crystalline porous magnesium silicate support and gold nanoparticles, the catalyst being useful for oxidative cracking of hydrocarbons, specifically the production of light olefins from propane. Methods of producing the nanomaterial catalyst as well as a method of oxidative cracking of a hydrocarbon to produce light olefins are provided.
    Type: Grant
    Filed: October 20, 2021
    Date of Patent: February 8, 2022
    Assignee: King Abdulaziz University
    Inventors: Katabathini Narasimharao, Sulaiman Nasir Basahel, Abdulmohsen Al Shehri, Fawaz Saleh Al-Sultan
  • Method for detecting and measuring heavy metals
    Patent number: 11243169
    Abstract: A method of detecting one or more heavy metals in a sample solution is provided. The disclosure includes adding a dye to the sample solution having the one or more heavy metals to produce a color mixture. Mesoporous TiO2 NPs are added to the color mixture to preconcentrate metal-dye complex onto the surface of the mesoporous TiO2 NPs. Presence of the one or more heavy metals is detected by change in color within about 30 seconds via a naked eye. The disclosure further includes a method of determining concentration of one or more heavy metals in a sample solution by absorbance.
    Type: Grant
    Filed: February 22, 2021
    Date of Patent: February 8, 2022
    Assignee: KING ABDULAZIZ UNIVERSITY
    Inventors: Mohammad W. Kadi, Reda Mohamedy Mohamed, Adel Ali Ismail, Mohd Faisal
  • METHOD FOR MAKING PROPENAMIDE COMPOUND
    Publication number: 20220033368
    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: Application
    Filed: September 24, 2021
    Publication date: February 3, 2022
    Applicant: King Abdulaziz University
    Inventors: Moustafa E. EL-ARABY, Abdelsattar M. OMAR, Martin K. SAFO, Radwan S. ELHAGGAR, Tamer M. ABDELGHANY, Mostafa H. AHMED
  • SIGNAL DETECTION METHOD FOR NON-COHERENT DETECTION IN A CHIRP SPREAD SPECTRUM COMMUNICATION SYSTEM
    Publication number: 20220038134
    Abstract: A system and methods for transmission and non-coherent detection of data signals modulated by a plurality of overlapping chirps in a chirp spread spectrum communication system (CSS). Data signals input to an adaptive overlapping transmitter are modulated by a plurality of overlapping chirps and transmitted over a wireless communication system to a non-coherent receiver. The coherent receiver includes a chirp matched filter which matches the chirps to an internal chirp signal, a delay filter which delays each chirp, a multiplier which multiplies each delayed chirp by a next chirp, an integrator which sums the amplitudes of the chirps and decision circuitry which determines the polarity of each sum and outputs a stream of ones and zeroes representing the data signals.
    Type: Application
    Filed: July 21, 2021
    Publication date: February 3, 2022
    Applicant: King Abdulaziz University
    Inventor: Ahmed BARNAWI
  • INTERNET OF THINGS METHOD FOR CLASS-A END DEVICE COMMUNICATION
    Publication number: 20220038875
    Abstract: A LoRa device for communicating sensor signals in a low power wide area network (LPWAN) includes a physical layer using Hamming encoding and Gray indexing with chirp spread signal (CSS) modulation to encode and modulate the sensor signals and a medium access layer (MAC) including a compressive sensing sub-layer which reduces encoded, modulated signals to sparse vectors. A transmission packet is formed by combining the sparse vectors with a selected set of sparse vectors representing past measurements and the incoming velocity of the sensor signals. A receiver decompresses the transmission packet by reconstructing, at a sparse recovery sub-layer of a receiver MAC layer, the encoded, modulated sensor signals. A decoder path removes the CSS modulation and Gray indexing, and Hamming decodes the sensors signals.
    Type: Application
    Filed: August 11, 2021
    Publication date: February 3, 2022
    Applicant: King Abdulaziz University
    Inventors: Abdulah ALJOHANI, Waleed Alasmary
  • COMPRESSIVE SENSING-AIDED LPWAN MAC LAYER
    Publication number: 20220038874
    Abstract: A LoRa device for communicating sensor signals in a low power wide area network (LPWAN) includes a physical layer using Hamming encoding and Gray indexing with chirp spread signal (CSS) modulation to encode and modulate the sensor signals and a medium access layer (MAC) including a compressive sensing sub-layer which reduces encoded, modulated signals to sparse vectors. A transmission packet is formed by combining the sparse vectors with a selected set of sparse vectors representing past measurements and the incoming velocity of the sensor signals. A receiver decompresses the transmission packet by reconstructing, at a sparse recovery sub-layer of a receiver MAC layer, the encoded, modulated sensor signals. A decoder path removes the CSS modulation and Gray indexing, and Hamming decodes the sensors signals.
    Type: Application
    Filed: July 31, 2020
    Publication date: February 3, 2022
    Applicant: King Abdulaziz University
    Inventors: Abdulah ALJOHANI, Waleed Alasmary
  • Internet of things method for class-A end device communication
    Patent number: 11240650
    Abstract: A LoRa device for communicating sensor signals in a low power wide area network (LPWAN) includes a physical layer using Hamming encoding and Gray indexing with chirp spread signal (CSS) modulation to encode and modulate the sensor signals and a medium access layer (MAC) including a compressive sensing sub-layer which reduces encoded, modulated signals to sparse vectors. A transmission packet is formed by combining the sparse vectors with a selected set of sparse vectors representing past measurements and the incoming velocity of the sensor signals. A receiver decompresses the transmission packet by reconstructing, at a sparse recovery sub-layer of a receiver MAC layer, the encoded, modulated sensor signals. A decoder path removes the CSS modulation and Gray indexing, and Hamming decodes the sensors signals.
    Type: Grant
    Filed: August 11, 2021
    Date of Patent: February 1, 2022
    Assignee: King Abdulaziz University
    Inventors: Abdulah Aljohani, Waleed Alasmary
  • Signal detection method for non-coherent detection in a chirp spread spectrum communication system
    Patent number: 11239879
    Abstract: A system and methods for transmission and non-coherent detection of data signals modulated by a plurality of overlapping chirps in a chirp spread spectrum communication system (CSS). Data signals input to an adaptive overlapping transmitter are modulated by a plurality of overlapping chirps and transmitted over a wireless communication system to a non-coherent receiver. The coherent receiver includes a chirp matched filter which matches the chirps to an internal chirp signal, a delay filter which delays each chirp, a multiplier which multiplies each delayed chirp by a next chirp, an integrator which sums the amplitudes of the chirps and decision circuitry which determines the polarity of each sum and outputs a stream of ones and zeroes representing the data signals.
    Type: Grant
    Filed: July 21, 2021
    Date of Patent: February 1, 2022
    Assignee: King Abdulaziz University
    Inventor: Ahmed Barnawi
  • Method for making a noble metal nanomedicine
    Patent number: 11234940
    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 5, 2021
    Date of Patent: February 1, 2022
    Assignee: King Abdulaziz University
    Inventors: Imran Kazmi, Syed Sarim Imam, Muhammad Afzal, Muhammad Shahid Nadeem, Fahad A. Al-Abbasi, Firoz Anwar
  • Nanocomposite as an electrochemical sensor
    Patent number: 11237127
    Abstract: An electrochemical sensor is provided wherein the sensor includes a nanocomposite comprising zinc oxide nanoparticles, graphene oxide, and PEDOT:PSS binder polymer, wherein the nanocomposite is deposited as a film on a glassy carbon electrode. The sensor may be included in an electrochemical cell useful for methods of detecting phenylhydrazine in a solution.
    Type: Grant
    Filed: June 28, 2021
    Date of Patent: February 1, 2022
    Assignee: KING ABDULAZIZ UNIVERSITY
    Inventors: Mohammed Muzibur Rahman, Abdullah Mohamed Asiri, Muhammad Tariq Saeed Chani
  • Filtration system with macroporous support and gasketed membrane filter
    Patent number: 11235991
    Abstract: A membrane filter apparatus for splitting a feed into filtrate and retentate is provided. The apparatus comprises a body chamber, a feed inlet disposed on the body chamber, a retentate outlet located in the body chamber, a feed distribution tube connected to the feed inlet, and a filter assembly having a filter. The feed distribution tube has a length sufficient to cause the feed to enter the body chamber at a feed distance from the filter assembly of no greater than 50% of a total length of the body chamber. The feed flows across the filter in a direction parallel to a surface of the filter assembly. The filtrate passes through the filter assembly and the retentate flows through the body chamber in a direction antiparallel to the feed flow through the feed distribution tube and out through the retentate outlet.
    Type: Grant
    Filed: July 21, 2021
    Date of Patent: February 1, 2022
    Assignee: King Abdulaziz University
    Inventors: Hani Abdullah Abulkhair, Iqbal Ahmed Moujdin, Mohammad S. Albeiruti, Amer Ahmed Jamil Shaiban
  • Method for regenerating optical signals over free space optical links
    Patent number: 11239913
    Abstract: A method and system for regenerating free space optical (FSO) signal pulses over free space optical (FSO) links. The FSO signal pulses are received over a first FSO link by a receiver telescope. The FSO signal pulses are split into a first part and a second part. The first part of the FSO signal pulses is converted to an electrical signal. The electrical signal is low pass filtered, amplified, and inverted to generate a negative electric voltage. The amplitude of the second part of the FSO signal pulses is attenuated by an optical absorber based on the negative electric voltage, thus regenerating the FSO signal pulses. The regenerated FSO signal pulses are amplified and bandpass filtered. The amplified and filtered regenerated FSO signal pulses are transmitted on a second FSO link.
    Type: Grant
    Filed: June 11, 2021
    Date of Patent: February 1, 2022
    Assignee: King Abdulaziz University
    Inventors: Abdulah Aljohani, Salman Ghafoor, Jawad Mirza
  • Surface-modified emulsomes for intranasal delivery of drugs
    Patent number: 11234933
    Abstract: Emulsome compositions comprising phosphatidylcholine, cholesterol, tristearin, and one or more lipophilic bioactive agents such as vinpocetine are provided. The emulsomes may further comprise surface modifications of either [N-(carbonyl-methoxypropylethyleneglycol-2000)-1,2-distearoyl-sn-glycero-3-phosphoethanolamine, sodium salt] (MPEG-DSPE) for peglyation or stearylamine for cationization. Methods of improving brain delivery of lipophilic bioactive agents by intranasally administering such emulsome compositions are also provided.
    Type: Grant
    Filed: March 2, 2021
    Date of Patent: February 1, 2022
    Assignee: KING ABDULAZIZ UNIVERSITY
    Inventors: Hibah M. Aldawsari, Shaimaa M. Badr-Eldin, Nourah Y. Assiri, Abdelsattar Omar