Patents by Inventor Mohamed Elsayed El-Hefnawy

Mohamed Elsayed El-Hefnawy 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).

  • Protic asphaltene ionic liquids as asphaltene stabilizer
    Patent number: 10815433
    Abstract: Protic asphaltene ionic liquids comprising chemically modified asphaltenes are provided. The asphaltenes are modified via carboxylation and formation of alkyl and/or aryl imidazole derivatives. Chemical modification of the asphaltenes results in their stabilization e.g. in heavy petroleum crude, and prevents their aggregation and precipitation.
    Type: Grant
    Filed: October 15, 2019
    Date of Patent: October 27, 2020
    Assignee: King Abdulaziz University
    Inventors: Ali Issa Ismail, Ayman Mohamady Atta, Mohamed Hassan El-Newehy, Mohamed Elsayed EL-Hefnawy
  • Protic asphaltene ionic liquids as asphaltene stabilizer
    Patent number: 10723957
    Abstract: Protic asphaltene ionic liquids comprising chemically modified asphaltenes are provided. The asphaltenes are modified via carboxylation and formation of alkyl and/or aryl imidazole derivatives. Chemical modification of the asphaltenes results in their stabilization e.g. in heavy petroleum crude, and prevents their aggregation and precipitation.
    Type: Grant
    Filed: April 16, 2020
    Date of Patent: July 28, 2020
    Assignee: King Abulaziz University
    Inventors: Ali Issa Ismail, Ayman Mohamady Atta, Mohamed Hassan El-Newehy, Mohamed Elsayed El-Hefnawy