Patents by Inventor SHERIF SHAWKI ZAKI HINDI

SHERIF SHAWKI ZAKI HINDI 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).

  • Patent number: 11548192
    Abstract: An apparatus, and a system for manufacturing a bioplastic material from a blend solution of gum arabica (GA) and polyvinyl alcohol (PVA) is provided. The apparatus includes a panel having a first end, a second end distal to the first end, and a plurality of walls extending from a periphery of the panel, the panel configured to accommodate the blend solution. The apparatus further includes a plurality of support members coupled to the first end and the second end of the panel and configured to adjust a slope angle of the panel; and one or more vibration generating units coupled to the plurality of support members and configured to vibrate the panel when the blend solution flows from the first end to the second end of the panel. A method of preparing the bioplastic material is also disclosed.
    Type: Grant
    Filed: April 19, 2022
    Date of Patent: January 10, 2023
    Assignee: King Abdulaziz University
    Inventors: Sherif Shawki Zaki Hindi, Mona Othman I. Albureikan
  • Patent number: 11338261
    Abstract: A Fenton apparatus of the present disclosure includes a reactor vessel, gas injection inlets that allow ejection of aeration coolant perpendicular to axis of the reactor vessel to agitate a reaction composition present in the reactor vessel under vortex conditions, a jacket cooling loop encasing the reactor vessel to allow circulation of a jacket coolant selected from a group consisting of forced air, nitrogen gas, and water, a coil cooling loop coiling around the reactor vessel to allow circulation of a coil coolant selected from a group consisting of forced air, nitrogen gas, water, and carbon dioxide. Multiple programmable solenoid valves are provided to individually control injection of the aeration coolant, the jacket coolant, and the coil coolant. A controller is provided to communicate with a temperature sensor and each programmable solenoid valve.
    Type: Grant
    Filed: August 10, 2021
    Date of Patent: May 24, 2022
    Assignee: King Abdulaziz University
    Inventors: Sherif Shawki Zaki Hindi, Uthman Mohammed Ahmed Dawoud
  • Patent number: 11306434
    Abstract: The present invention involves an environmentally friendly process and apparatus for the delignification of lignin-containing materials, such as cardboard newspaper or agricultural or tree pruning wastes. This process produces cellulose using low temperatures and low concentrations of hydrogen peroxide. It can be performed using a column fitted with a semipermeable gasket that pressurizes the column by retaining oxygen released by action of the hydrogen peroxide on a lignin-containing material.
    Type: Grant
    Filed: August 20, 2021
    Date of Patent: April 19, 2022
    Assignee: King Abdulaziz University
    Inventor: Sherif Shawki Zaki Hindi
  • Publication number: 20220041760
    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: Application
    Filed: October 26, 2021
    Publication date: February 10, 2022
    Applicant: King Abdulaziz University
    Inventor: Sherif Shawki Zaki HINDI
  • Publication number: 20220041759
    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: Application
    Filed: October 26, 2021
    Publication date: February 10, 2022
    Applicant: King Abdulaziz University
    Inventor: Sherif Shawki Zaki Hindi
  • 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
  • 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
  • Publication number: 20210381163
    Abstract: The present invention involves an environmentally friendly process and apparatus for the delignification of lignin-containing materials, such as cardboard newspaper or agricultural or tree pruning wastes. This process produces cellulose using low temperatures and low concentrations of hydrogen peroxide. It can be performed using a column fitted with a semipermeable gasket that pressurizes the column by retaining oxygen released by action of the hydrogen peroxide on a lignin-containing material.
    Type: Application
    Filed: August 20, 2021
    Publication date: December 9, 2021
    Applicant: King Abdulaziz University
    Inventor: Sherif Shawki Zaki HINDI
  • Patent number: 11161918
    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: September 15, 2020
    Date of Patent: November 2, 2021
    Assignee: King Abdulaziz University
    Inventor: Sherif Shawki Zaki Hindi
  • Patent number: 11141705
    Abstract: A Fenton apparatus of the present disclosure includes a reactor vessel, gas injection inlets that allow ejection of aeration coolant perpendicular to axis of the reactor vessel to agitate a reaction composition present in the reactor vessel under vortex conditions, a jacket cooling loop encasing the reactor vessel to allow circulation of a jacket coolant selected from a group consisting of forced air, nitrogen gas, and water, a coil cooling loop coiling around the reactor vessel to allow circulation of a coil coolant selected from a group consisting of forced air, nitrogen gas, water, and carbon dioxide. Multiple programmable solenoid valves are provided to individually control injection of the aeration coolant, the jacket coolant, and the coil coolant. A controller is provided to communicate with a temperature sensor and each programmable solenoid valve.
    Type: Grant
    Filed: March 22, 2021
    Date of Patent: October 12, 2021
    Assignee: King Abdulaziz University
    Inventors: Sherif Shawki Zaki Hindi, Uthman Mohammed Ahmed Dawoud
  • Patent number: 11136715
    Abstract: The present invention involves an environmentally friendly process and apparatus for the delignification of lignin-containing materials, such as cardboard newspaper or agricultural or tree pruning wastes. This process produces cellulose using low temperatures and low concentrations of hydrogen peroxide. It can be performed using a column fitted with a semipermeable gasket that pressurizes the column by retaining oxygen released by action of the hydrogen peroxide on a lignin-containing material.
    Type: Grant
    Filed: May 6, 2021
    Date of Patent: October 5, 2021
    Assignee: King Abdulaziz University
    Inventor: Sherif Shawki Zaki Hindi
  • Publication number: 20210269973
    Abstract: The present invention involves an environmentally friendly process and apparatus for the delignification of lignin-containing materials, such as cardboard newspaper or agricultural or tree pruning wastes. This process produces cellulose using low temperatures and low concentrations of hydrogen peroxide. It can be performed using a column fitted with a semipermeable gasket that pressurizes the column by retaining oxygen released by action of the hydrogen peroxide on a lignin-containing material.
    Type: Application
    Filed: May 6, 2021
    Publication date: September 2, 2021
    Applicant: King Abdulaziz University
    Inventor: Sherif Shawki Zaki HINDI
  • Patent number: 11078624
    Abstract: The present invention involves an environmentally friendly process and apparatus for the delignification of lignin-containing materials, such as cardboard newspaper or agricultural or tree pruning wastes. This process produces cellulose using low temperatures and low concentrations of hydrogen peroxide. It can be performed using a column fitted with a semipermeable gasket that pressurizes the column by retaining oxygen released by action of the hydrogen peroxide on a lignin-containing material.
    Type: Grant
    Filed: September 21, 2018
    Date of Patent: August 3, 2021
    Assignee: King Abdulaziz University
    Inventor: Sherif Shawki Zaki Hindi
  • Patent number: 11060208
    Abstract: A system for manufacturing purified shellac floss from crude shellac includes a spinner unit, and a rotatable head with a cavity to accommodate the crude shellac. A microwave generator unit is configured to supply microwave radiation to the spinner unit. A collection unit has a side wall and an end wall defining an interior volume and is configured to collect the purified shellac floss.
    Type: Grant
    Filed: March 22, 2021
    Date of Patent: July 13, 2021
    Assignee: KING ABDULAZIZ UNIVERSITY
    Inventors: Sherif Shawki Zaki Hindi, Uthman Mohammed Ahmed Dawoud, Khalid Ali Mohammed Asiry
  • Publication number: 20210040237
    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: Application
    Filed: September 15, 2020
    Publication date: February 11, 2021
    Applicant: King Abdulaziz University
    Inventor: Sherif Shawki Zaki HINDI
  • Patent number: 10808045
    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: September 21, 2018
    Date of Patent: October 20, 2020
    Assignee: King Abdulaziz University
    Inventor: Sherif Shawki Zaki Hindi
  • Publication number: 20200095728
    Abstract: The present invention involves an environmentally friendly process and apparatus for the delignification of lignin-containing materials, such as cardboard newspaper or agricultural or tree pruning wastes. This process produces cellulose using low temperatures and low concentrations of hydrogen peroxide. It can be performed using a column fitted with a semipermeable gasket that pressurizes the column by retaining oxygen released by action of the hydrogen peroxide on a lignin-containing material.
    Type: Application
    Filed: September 21, 2018
    Publication date: March 26, 2020
    Applicant: King Abdulaziz University
    Inventor: Sherif Shawki Zaki Hindi
  • Publication number: 20200095342
    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: Application
    Filed: September 21, 2018
    Publication date: March 26, 2020
    Applicant: King Abdulaziz University
    Inventor: Sherif Shawki Zaki Hindi
  • Patent number: 10144786
    Abstract: The method of making nanocrystalline cellulose is a flash lyophilized-acidic hydrolysis method for converting cellulosic fibers into nanocrystalline cellulose. Cellulosic fibers are initially ground in a high-speed, rotary grinder to produce ground cellulose fiber. The ground cellulose fiber is then dried to produce dried, ground cellulose, which is then freeze-dried to yield lyophilized cellulose. Pure concentrated sulfuric acid is then added to the lyophilized cellulose at a liquid/solid ratio of 1:1 (vol/wt) to form a cellulosic paste. The cellulosic paste is diluted in either water or absolute ethanol at a liquid/solid ratio of 1:1 (vol/wt) to form a cellulosic solution, which is then filtered under cooling by liquid nitrogen-vapor. The nanocrystalline cellulose precipitate is then washed until neutralization and dried to yield nanocrystalline cellulose.
    Type: Grant
    Filed: April 6, 2016
    Date of Patent: December 4, 2018
    Assignee: King Abdulaziz University
    Inventors: Sherif Shawki Zaki Hindi, Refaat Atalla Abohassan
  • Publication number: 20170291962
    Abstract: The method of making nanocrystalline cellulose is a flash lyophilized-acidic hydrolysis method for converting cellulosic fibers into nanocrystalline cellulose. Cellulosic fibers are initially ground in a high-speed, rotary grinder to produce ground cellulose fiber. The ground cellulose fiber is then dried to produce dried, ground cellulose, which is then freeze-dried to yield lyophilized cellulose. Pure concentrated sulfuric acid is then added to the lyophilized cellulose at a liquid/solid ratio of 1:1 (vol/wt) to form a cellulosic paste. The cellulosic paste is diluted in either water or absolute ethanol at a liquid/solid ratio of 1:1 (vol/wt) to form a cellulosic solution, which is then filtered under cooling by liquid nitrogen-vapor. The nanocrystalline cellulose precipitate is then washed until neutralization and dried to yield nanocrystalline cellulose.
    Type: Application
    Filed: April 6, 2016
    Publication date: October 12, 2017
    Inventors: SHERIF SHAWKI ZAKI HINDI, REFAAT ATALLA ABOHASSAN