Patents by Inventor Ali Abdel-Rahman Mohammad Othman

Ali Abdel-Rahman Mohammad Othman 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: 9334386
    Abstract: The copolymer of styrene and methylmethacrylate containing reduced graphene oxide/silver nanoparticles (PS-PMMA/RGO/AgNPs) nanocomposite were prepared via in situ bulk polymerization method using two different preparation techniques. In the first approach, a mixture of graphene oxide (GO), styrene (S) and methylmethacrylate monomers (MMA) were polymerized using a bulk polymerization method with a free radical initiator. After the addition silver nitrate (AgNO3), the product was reduced via microwave irradiation (MWI) in presence of the reducing agent hydrazine hydrate (HH), to obtain R-(GO-(PS-PMMA))/AgNPs nanocomposite. This nanocomposite was then used to create a material that had antimicrobial properties to be used in medical devices or medical related implants.
    Type: Grant
    Filed: February 16, 2014
    Date of Patent: May 10, 2016
    Assignee: Alfaisal University
    Inventors: Edreese Housni Alsharaeh, Mohammad Ateeq Aldosari, Ali Abdel-Rahman Mohammad Othman, Mohammed Faour Qasem Al-Hindawi, Khaled Bin Bandar Alsaud
  • Publication number: 20150065601
    Abstract: The copolymer of styrene and methylmethacrylate containing reduced graphene oxide/silver nanoparticles (PS-PMMA/RGO/AgNPs) nanocomposite were prepared via in situ bulk polymerization method using two different preparation techniques. In the first approach, a mixture of graphene oxide (GO), styrene (S) and methylmethacrylate monomers (MMA) were polymerized using a bulk polymerization method with a free radical initiator. After the addition silver nitrate (AgNO3), the product was reduced via microwave irradiation (MWI) in presence of the reducing agent hydrazine hydrate (HH), to obtain R-(GO-(PS-PMMA))/AgNPs nanocomposite. This nanocomposite was then used to create a material that had antimicrobial properties to be used in medical devices or medical related implants.
    Type: Application
    Filed: February 16, 2014
    Publication date: March 5, 2015
    Applicant: ALFAISAL UNIVERSITY
    Inventors: Edreese Housni Alsharaeh, Mohammad Ateeq Aldosari, ALI ABDEL-RAHMAN MOHAMMAD OTHMAN, MOHAMMED FAOUR QASEM AL-HINDAWI, Khaled Bin Bandar Alsaud
  • Publication number: 20140323607
    Abstract: A novel nanocomposite having graphene sheets is described. The nanocomposite may be used for medical devices such as bone cement, dentures, paper, paint and automotive industries. A novel Microwave irradiation (MWI) was used to obtain R-(GO-(STY-co-MMA)). The results indicate that the nanocomposite obtained using the MWI had a better morphology and dispersion with enhanced thermal stability compared with the nanocomposite prepared without MWI. An average increase of 136% in hardness and 76% in elastic modulus were achieved through the addition of only 2.0 wt % of RGO nanocomposite obtained via the MWI method.
    Type: Application
    Filed: September 4, 2013
    Publication date: October 30, 2014
    Applicant: ALFAISAL UNIVERSITY
    Inventors: Edreese H. Alsharaeh, Mohammad AlDosari, Ali Abdel-Rahman Mohammad Othman
  • Patent number: 8557916
    Abstract: A dual approach with slight modification was used to produce a nanocomposite using graphene sheets. The nanocomposite may be used for medical devices such as bone cement, dentures, paper, paint and automotive industries. A novel Microwave irradiation (MWI) was used to obtain R-(GO-(STY-co-MMA)). The results indicate that the nanocomposite obtained using the MWI had a better morphology and dispersion with enhanced thermal stability compared with the nanocomposite prepared without MWI. An average increase of 136% in hardness and 76% in elastic modulus were achieved through the addition of only 2.0 wt % of RGO nanocomposite obtained via the MWI method.
    Type: Grant
    Filed: April 30, 2013
    Date of Patent: October 15, 2013
    Assignee: Alfaisal University
    Inventors: Edreese H Alsharaeh, Mohammad AlDosari, Ali Abdel-Rahman Mohammad Othman