Patents by Inventor XIAOFENG CHANG

XIAOFENG CHANG 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: 10323318
    Abstract: Ag/C crystalline nanocomposite films and a method of forming the films with controllable Ag/C molar ratios using a concurrent excimer laser-induced ablation of a silver target and a hydrocarbon gas under a vacuum atmosphere. Metal/Carbon nanocomposites prepared by concurrent irradiation of a metal target, in the presence of a hydrocarbon gas, during an excimer laser induced process.
    Type: Grant
    Filed: October 15, 2018
    Date of Patent: June 18, 2019
    Assignee: King Fahd University of Petroleum and Minerals
    Inventors: Mohammed Ashraf Gondal, Radek Fajgar, Zain Hassan Abdallah Yamani, Xiaofeng Chang
  • Publication number: 20190048461
    Abstract: Ag/C crystalline nanocomposite films and a method of forming the films with controllable Ag/C molar ratios using a concurrent excimer laser-induced ablation of a silver target and a hydrocarbon gas under a vacuum atmosphere. Metal/Carbon nanocomposites prepared by concurrent irradiation of a metal target, in the presence of a hydrocarbon gas, during an excimer laser induced process.
    Type: Application
    Filed: October 15, 2018
    Publication date: February 14, 2019
    Applicant: KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS
    Inventors: Mohammed Ashraf Gondal, Radek Fajgar, Zain Hassan Abdallah Yamani, Xiaofeng Chang
  • Patent number: 10174418
    Abstract: Ag/C crystalline nanocomposite films and a method of forming the films with controllable Ag/C molar ratios using a concurrent excimer laser-induced ablation of a silver target and a hydrocarbon gas under a vacuum atmosphere. Metal/Carbon nanocomposites prepared by concurrent irradiation of a metal target, in the presence of a hydrocarbon gas, during an excimer laser induced process.
    Type: Grant
    Filed: October 10, 2018
    Date of Patent: January 8, 2019
    Assignee: King Fahd University of Petroleum and Minerals
    Inventors: Mohammed Ashraf Gondal, Radek Fajgar, Zain Hassan Abdallah Yamani, Xiaofeng Chang
  • Patent number: 10125418
    Abstract: Ag/C crystalline nanocomposite films and a method of forming the films with controllable Ag/C molar ratios using a concurrent excimer laser-induced ablation of a silver target and a hydrocarbon gas under a vacuum atmosphere. Metal/Carbon nanocomposites prepared by concurrent irradiation of a metal target, in the presence of a hydrocarbon gas, during an excimer laser induced process.
    Type: Grant
    Filed: January 7, 2016
    Date of Patent: November 13, 2018
    Assignee: King Fahd University of Petroleum and Minerals
    Inventors: Mohammed Ashraf Gondal, Radek Fajgar, Zain Hassan Abdallah Yamani, Xiaofeng Chang
  • Patent number: 9505635
    Abstract: The wastewater filtration system and method relates to systems and methods that use Ruba Al-Khali Saudi sand as the filtration media in systems for treating industrial wastewater. Ruba Al-Khali Saudi sand is effective in removing organic dyes, particularly rhodamine B, from the wastewater. The method includes bringing wastewater having an organic dye constituent into contact with the Saudi sand for a period of time sufficient to adsorb the organic dye. The system may include a batch reactor, such as a fixed bed or moving bed reactor, or a continuous flow reactor, such as a column reactor. When a batch reactor is used, the method may benefit from shaking or agitating the filtration media, particularly in the dark or under low ambient light conditions. The method may include regenerating the Saudi sand after use by heating the filtration media.
    Type: Grant
    Filed: December 22, 2014
    Date of Patent: November 29, 2016
    Assignee: KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS
    Inventors: Mohammed Ashraf Gondal, Xiaofeng Chang, Mohammad Ashraf Ali, Mohamed Abdulkader Dastageer, Syed M. Zubair, John H. Lienhard, V
  • Publication number: 20160222502
    Abstract: Ag/C crystalline nanocomposite films and a method of forming the films with controllable Ag/C molar ratios using a concurrent excimer laser-induced ablation of a silver target and a hydrocarbon gas under a vacuum atmosphere. Metal/Carbon nanocomposites prepared by concurrent irradiation of a metal target, in the presence of a hydrocarbon gas, during an excimer laser induced process.
    Type: Application
    Filed: January 7, 2016
    Publication date: August 4, 2016
    Applicant: KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS
    Inventors: Mohammed Ashraf GONDAL, Radek FAJGAR, Zain Hassan Abdallah YAMANI, Xiaofeng CHANG
  • Publication number: 20150175444
    Abstract: The wastewater filtration system and method relates to systems and methods that use Ruba Al-Khali Saudi sand as the filtration media in systems for treating industrial wastewater. Ruba Al-Khali Saudi sand is effective in removing organic dyes, particularly rhodamine B, from the wastewater. The method includes bringing wastewater having an organic dye constituent into contact with the Saudi sand for a period of time sufficient to adsorb the organic dye. The system may include a batch reactor, such as a fixed bed or moving bed reactor, or a continuous flow reactor, such as a column reactor. When a batch reactor is used, the method may benefit from shaking or agitating the filtration media, particularly in the dark or under low ambient light conditions. The method may include regenerating the Saudi sand after use by heating the filtration media.
    Type: Application
    Filed: December 22, 2014
    Publication date: June 25, 2015
    Applicants: MASSACHUSETTS INSTITUTE OF TECHNOLOGY, KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS
    Inventors: MOHAMMED ASHRAF GONDAL, XIAOFENG CHANG, MOHAMMAD ASHRAF ALI, MOHAMED ABDULKADER DASTAGEER, SYED M. ZUBAIR, JOHN H. LIENHARD, V
  • Publication number: 20150174567
    Abstract: The hybrid photocatalyst for wastewater remediation is a composite of rhodamine B and BiOBr. The rhodamine B has a concentration between about 0.1 wt % and about 1 wt % of the overall photocatalyst. The hybrid photocatalyst is made by immersing a BiOBr semiconductor in an aqueous rhodamine B solution to form the hybrid photocatalyst by sorption of the rhodamine B by the BiOBr semiconductor. In use, the hybrid photocatalyst is added to wastewater containing at least one contaminant, such as methyl orange (sodium 4-[(4-dimethylamino)phenyldiazenyl]benzenesulfonate), to form a suspension of the hybrid photocatalyst and the at least one contaminant. The suspension is then exposed to visible to light to form a slurry containing a reaction mixture in the wastewater. The slurry is then filtered to remove the reaction mixture.
    Type: Application
    Filed: December 22, 2014
    Publication date: June 25, 2015
    Applicants: MASSACHUSETTS INSTITUTE OF TECHNOLOGY, KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS
    Inventors: MOHAMMED ASHRAF GONDAL, XIAOFENG CHANG, MOHAMMAD ASHRAF ALI, MOHAMED ABDULKADER DASTAGEER, SYED M. ZUBAIR, JOHN H. LIENHARD, V