Patents by Inventor Ahmed A. Abdel-Hafez

Ahmed A. Abdel-Hafez 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).

  • Fuel-air mixer for use with a combustor assembly
    Patent number: 9115896
    Abstract: A fuel-air mixer for use with a combustor is provided. The fuel-air mixer includes an outer ring, an intermediate hub disposed coaxially within the outer ring such that a first plenum is formed therebetween, and an inner hub disposed coaxially within the intermediate hub such that a second plenum is formed therebetween. A first swirler including a plurality of first swirler vanes is positioned between the outer ring and the intermediate hub, wherein the first swirler is configured to rotate fluid flowing therethrough in a first direction. A second swirler including a plurality of second swirler vanes is positioned between the intermediate hub and the inner hub, wherein the second swirler is configured to rotate fluid flowing therethrough in a second direction. A plurality of fuel injection conduits are also defined within the fuel-air mixer for channeling fuel to the first and second plenums.
    Type: Grant
    Filed: July 31, 2012
    Date of Patent: August 25, 2015
    Assignee: General Electric Company
    Inventors: Ahmed A. Abdel-Hafez, Ahmed Mostafa EL Kady, Nan Zong, Richard Bradford Hook, Jr., Steven Handelsman
  • Fuel-Air Mixer For Use With A Combustor Assembly
    Publication number: 20140033722
    Abstract: A fuel-air mixer for use with a combustor is provided. The fuel-air mixer includes an outer ring, an intermediate hub disposed coaxially within the outer ring such that a first plenum is formed therebetween, and an inner hub disposed coaxially within the intermediate hub such that a second plenum is formed therebetween. A first swirler including a plurality of first swirler vanes is positioned between the outer ring and the intermediate hub, wherein the first swirler is configured to rotate fluid flowing therethrough in a first direction. A second swirler including a plurality of second swirler vanes is positioned between the intermediate hub and the inner hub, wherein the second swirler is configured to rotate fluid flowing therethrough in a second direction. A plurality of fuel injection conduits are also defined within the fuel-air mixer for channeling fuel to the first and second plenums.
    Type: Application
    Filed: July 31, 2012
    Publication date: February 6, 2014
    Applicant: GENERAL ELECTRIC COMPANY
    Inventors: Ahmed A. Abdel-Hafez, Ahmed Mostafa EL Kady, Nan Zong, Richard Bradford Hook, JR., Steven Handelsman
  • Alginases, systems containing alginases and methods of cloning, purifying and/or utilizing alginases
    Publication number: 20060128946
    Abstract: The present invention relates to cell wall degradative systems, in particular to systems containing enzymes that bind to and/or depolymerize cellulose. These systems have a number of applications.
    Type: Application
    Filed: June 1, 2005
    Publication date: June 15, 2006
    Inventors: Ronald Weiner, Steven Hutcheson, Ahmed Abdel-Hafez, Michael Howard, Larry Taylor, Nathan Ekborg