Patents by Inventor Amjad Ashfaque Shaikh

Amjad Ashfaque Shaikh 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).

  • DETERMINATION OF POLYCYCLIC AROMATIC HYDROCARBONS IN WATER USING NANOPOROUS MATERIAL PREPARED FROM WASTE AVIAN EGG SHELL
    Publication number: 20150377752
    Abstract: Nanoporous polymorphic crystals of CaCO3 were used as sorbent and were applied in the dispersive micro-solid-phase extraction of selected polycyclic aromatic hydrocarbons as target analytes. After separation of the analytes on gas chromatography, they were successfully quantified with external calibration using flame ionization detection. Performance of the dispersive micro-solid-phase extraction was compared with a previously optimized solid-phase extraction technique.
    Type: Application
    Filed: September 4, 2015
    Publication date: December 31, 2015
    Applicant: King Fahd University of Petroleum and Minerals
    Inventors: Abdulmumin A. Nuhu, Chanbasha Basheer, Amjad Ashfaque Shaikh, Abdul Rahman Al-Arfaj
  • Dispersive micro solid phase extraction of polycyclic aromatic hydrocarbons from an aqueous sample
    Patent number: 9222858
    Abstract: Nanoporous polymorphic crystals of CaCO3 were used as sorbent and were applied in the dispersive micro-solid-phase extraction of selected polycyclic aromatic hydrocarbons as target analytes. After separation of the analytes on gas chromatography, they were successfully quantified with external calibration using flame ionization detection. Performance of the dispersive micro-solid-phase extraction was compared with a previously optimized solid-phase extraction technique.
    Type: Grant
    Filed: September 4, 2015
    Date of Patent: December 29, 2015
    Assignee: King Fahd University of Petroleum and Minerals
    Inventors: Abdulmumin A. Nuhu, Chanbasha Basheer, Amjad Ashfaque Shaikh, Abdul Rahman Al-Arfaj
  • Determination of polycyclic aromatic hydrocarbons in water using nanoporous material prepared from waste avian egg shell
    Patent number: 9146228
    Abstract: Nanoporous polymorphic crystals of CaCO3 were used as sorbent and were applied in the dispersive micro-solid-phase extraction of selected polycyclic aromatic hydrocarbons as target analytes. After separation of the analytes on gas chromatography, they were successfully quantified with external calibration using flame ionization detection. Performance of the dispersive micro-solid-phase extraction was compared with a previously optimized solid-phase extraction technique.
    Type: Grant
    Filed: October 9, 2013
    Date of Patent: September 29, 2015
    Assignee: King Fahd University of Petroleum and Minerals
    Inventors: Abdulmumin A. Nuhu, Chanbasha Basheer, Amjad Ashfaque Shaikh, Abdul Rahman Al-Arfaj
  • DETERMINATION OF POLYCYCLIC AROMATIC HYDROCARBONS IN WATER USING NANOPOROUS MATERIAL PREPARED FROM WASTE AVIAN EGG SHELL
    Publication number: 20150099308
    Abstract: Nanoporous polymorphic crystals of CaCO3 were used as sorbent and were applied in the dispersive micro-solid-phase extraction of selected polycyclic aromatic hydrocarbons as target analytes. After separation of the analytes on gas chromatography, they were successfully quantified with external calibration using flame ionization detection. Performance of the dispersive micro-solid-phase extraction was compared with a previously optimized solid-phase extraction technique.
    Type: Application
    Filed: October 9, 2013
    Publication date: April 9, 2015
    Applicant: KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS
    Inventors: Abdulmumin A. NUHU, CHANBASHA BASHEER, AMJAD ASHFAQUE SHAIKH, ABDUL RAHMAN AL-ARFAJ
  • Method of forming encapsulated carbon nanotubes
    Publication number: 20110266493
    Abstract: The method of forming encapsulated carbon nanotubes includes first forming a calcium chloride solution and a sodium hydrogen carbonate solution. A volume of carbon nanotubes are added to the calcium chloride solution and the calcium chloride solution and the volume of carbon nanotubes are then mixed with the sodium hydrogen carbonate solution to form a supersaturated calcium carbonate solution. Carbon nanotubes embedded in calcium carbonate crystals are precipitated from the supersaturated calcium carbonate solution. The carbon nanotubes embedded in the calcium carbonate crystals, forming the precipitate, are then filtered from the solution. The filtered carbon nanotubes embedded in the calcium carbonate crystals are washed and then dried, producing a usable volume of carbon nanotubes encapsulated within calcium carbonate crystals.
    Type: Application
    Filed: May 3, 2010
    Publication date: November 3, 2011
    Inventors: Amjad Ashfaque Shaikh, Muataz Ali Atieh, Tahar Laoui