Patents by Inventor Abdelrahman O. Ezzat

Abdelrahman O. Ezzat 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: 11969708
    Abstract: Modified chemical structures of cardanol extracted from cashew nut shell oil, and the use of the same to prepare imidazolium ionic liquids (IILs). The IILs can be used to prepare different types of silica, magnetite and calcium carbonate nanoparticles (NPs) as multifunctional oilfield chemicals for use in various oil spill collection, de-emulsification, viscosity improvement, asphaltene dispersant, and enhanced oil recovery applications.
    Type: Grant
    Filed: June 20, 2023
    Date of Patent: April 30, 2024
    Assignee: KING SAUD UNIVERSITY
    Inventors: Ayman M. Atta, Hamad A. Al-Lohedan, Abdelrahman O. Ezzat, Ali K. Aldalbahi
  • Patent number: 10202548
    Abstract: The modification of sand with superhydrophobic silica/wax nanoparticles may provide for water storage, applicable, for example, in desert environments. In particular, highly thermal stable superhydrophobic coats for sand are made of nanoparticles composed of superhydrophobic silica capped with paraffin wax. Superhydrophobic sand modified by such nanoparticles addresses issues of water storage in desert environments, capitalizing on sand resource utilization. Superhydrophobic sand, as modified, has excellent water repellency and great water-holding capacity. The superhydrophobic sand modified with superhydrophobic silica/wax nanoparticles can be applied for the desert water storage for agriculture and planting.
    Type: Grant
    Filed: April 4, 2018
    Date of Patent: February 12, 2019
    Assignee: King Saud University
    Inventors: Ayman M. Atta, Mahmood M. S. Abdullah, Hamad A. Al-Lohedan, Abdelrahman O. Ezzat, Mohamed Hasan Wahby
  • Patent number: 9850389
    Abstract: A method of synthesizing bimetallic oxide nanocomposites includes the steps of: providing a first metal salt solution; adding an oxidizing agent to the first metal salt solution while degassing the solution with an inert gas; heating the first metal salt solution; adding a second metal salt solution to the heated first metal salt solution to form a reaction mixture; adding a solution comprising a poly (ionic liquid) into the reaction mixture; adding a first base into the reaction mixture; adding a second base while stirring and maintaining a temperature ranging from about 40° C. to about 65° C. to provide a solution including a bimetallic oxide nanocomposite precipitate. The first metallic salt solution can include FeCl3 dissolved in water. The second metallic salt solution can include CuCl2 dissolved in water. The bimetallic oxide nanocomposites can be combined with epoxy resin to coat a steel stubstrate.
    Type: Grant
    Filed: March 22, 2017
    Date of Patent: December 26, 2017
    Assignee: KING SAUD UNIVERSITY
    Inventors: Ayman M. Atta, Hamad A. Al-Lohedan, Abdelrahman O. Ezzat, Mahmood M. S. Abdullah
  • Patent number: 9828445
    Abstract: Synthesis of modified chitosan particles for oral insulin delivery includes amidation of chitosan with a fatty acid, a modified fatty acid, and/or an amino acid. The amidated chitosan can be grafted with N-isopropylacrylamide (NIPAm) and cross-linked to provide the modified chitosan particles.
    Type: Grant
    Filed: December 13, 2016
    Date of Patent: November 28, 2017
    Assignee: KING SAUD UNIVERSITY
    Inventors: Ayman M. Atta, Hamad A. Al-Lohedan, Abdelrahman O. Ezzat