Patents by Inventor M. Shahine

M. Shahine 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: 10889751
    Abstract: A stimulation fluid including (i) an aqueous solution of an ammonium salt capable of being exothermally oxidized to produce heat and gas, (ii) an aqueous solution of an oxidizing agent capable of oxidizing the ammonium salt; (iii) a water-soluble inorganic acid salt and/or an organic carboxylic acid salt of a tertiary amine; (iv) a low molecular weight carboxylic acid; and (v) a high salinity brine containing divalent metal ions; and (vi) optionally, a surfactant.
    Type: Grant
    Filed: August 29, 2016
    Date of Patent: January 12, 2021
    Assignee: Liberty Oilfield Services, LLC
    Inventors: Ahmed M. Shahin, Bilu Cherian
  • Publication number: 20170081584
    Abstract: A stimulation fluid including (i) an aqueous solution of an ammonium salt capable of being exothermally oxidized to produce heat and gas, (ii) an aqueous solution of an oxidizing agent capable of oxidizing the ammonium salt; (iii) a water-soluble inorganic acid salt and/or an organic carboxylic acid salt of a tertiary amine; (iv) a low molecular weight carboxylic acid; and (v) a high salinity brine containing divalent metal ions; and (vi) optionally, a surfactant.
    Type: Application
    Filed: August 29, 2016
    Publication date: March 23, 2017
    Inventors: Ahmed M. Shahin, Bilu Cherian
  • Publication number: 20160244659
    Abstract: A self-initiating, self-reactive treatment fluid for treating a hydrocarbon-bearing reservoir in a formation includes (a) an ammonium salt capable of being exothermally oxidized to produce heat and nitrogen gas; (b) an oxidizing agent capable of oxidizing the ammonium salt; and (c) a free tertiary amine salt or a compound which reacts to form a free tertiary amine salt in situ. The treatment fluid may be placed in the reservoir during a controlled initiation phase, and a rapid reaction phase may initiate once placed in the desired location.
    Type: Application
    Filed: February 2, 2016
    Publication date: August 25, 2016
    Applicant: SANJEL CANADA LTD.
    Inventors: Ahmed M. SHAHIN, Markus C. WEISSENBERGER, Sally LAWRENCE, Peyman KHALAFPOUR
  • Patent number: 8703084
    Abstract: A method and apparatus for eliminating COS and/or CS2 from a hydrocarbon-containing feed stream, and further eliminating H2S from such feed stream or converting all sulfur species in such feed stream to H2S and SO2 to allow for easy subsequent conversion of such H2S and SO2 to elemental sulfur in a Claus reaction. The method comprises: (i) injecting water so that the feed stream contains greater than 10 vol % (water equivalent); (ii) passing the feed stream through catalyst means which hydrogenates COS and/or CS2 to H2S; (iii) injecting O2 so that the stoichiometric ratio of O2 to H2S is at least 0.5:1.0; (iv) passing the stream though a reaction zone having oxidation catalyst means which oxidizes H2S to elemental sulfur or SO2 (depending on the amount of oxygen and water added); where the temperature of the reaction zone is above the elemental sulfur dew point.
    Type: Grant
    Filed: February 17, 2012
    Date of Patent: April 22, 2014
    Assignee: Archon Technologies Ltd.
    Inventors: Conrad Ayasse, Ahmed M. Shahin, Alan Ayasse
  • Patent number: 8597411
    Abstract: An acid-gas sorbent comprising an amine-composite. The present composite may comprise a first component comprising an amine compound at a concentration of from about 1 wt % to about 75 wt %; a second component comprising a hydrophilic polymer and/or a pre-polymer compound at a concentration of from about 1 wt % to about 30 wt %; and a third component comprising a cross-linking agent, and/or a coupling agent at a concentration of from about 0.01 wt % to about 30 wt %.
    Type: Grant
    Filed: February 17, 2012
    Date of Patent: December 3, 2013
    Assignee: Archon Technologies Ltd.
    Inventors: Ahmed M. Shahin, Conrad Ayasse
  • Publication number: 20130217944
    Abstract: A method and apparatus for eliminating COS and/or CS2 from a hydrocarbon-containing feed stream, and further eliminating H2S from such feed stream or converting all sulfur species in such feed stream to H2S and SO2 to allow for easy subsequent conversion of such H2S and SO2 to elemental sulfur in a Claus reaction. The method comprises: (i) injecting water so that the feed stream contains greater than 10 vol % (water equivalent); (ii) passing the feed stream through catalyst means which hydrogenates COS and/or CS2 to H2S; (iii) injecting O2 so that the stoichiometric ratio of O2 to H2S is at least 0.5:1.0; (iv) passing the stream though a reaction zone having oxidation catalyst means which oxidizes H2S to elemental sulfur or SO2 (depending on the amount of oxygen and water added); where the temperature of the reaction zone is above the elemental sulfur dew point.
    Type: Application
    Filed: February 17, 2012
    Publication date: August 22, 2013
    Applicant: ARCHON TECHNOLOGIES LTD.
    Inventors: Conrad AYASSE, Ahmed M. SHAHIN, Alan AYASSE
  • Publication number: 20130216460
    Abstract: A method of reducing sulfur compounds from an incoming gas stream, comprising flowing the gas stream over a hydrolysis catalyst to convert COS and CS2 to H2S and reduce SO2 to elemental sulfur to form an effluent stream; providing an acidic gas removal unit comprising an absorbent; flowing said effluent stream over said absorbent to produce a stream free of acidic gases; applying an acidic-gas desorption mode to said acidic-gas rich absorbent to produce an acidic gas stream; introducing oxygen to said acidic gas-rich stream; providing a direct oxidation vessel containing catalyst suitable for catalyzing the oxidation of the H2S to sulfur wherein the temperature of the vessel is at or above the sulfur dew point at the reaction pressure; and flowing said acidic gas-rich stream over said catalyst to produce a processed stream having a reduced level of sulfur compounds.
    Type: Application
    Filed: July 10, 2012
    Publication date: August 22, 2013
    Applicant: ARCHON TECHNOLOGIES LTD.
    Inventors: Alan AYASSE, Ahmed M. SHAHIN, Conrad AYASSE
  • Publication number: 20130213229
    Abstract: An acid-gas sorbent comprising an amine-composite. The present composite may comprise a first component comprising an amine compound at a concentration of from about 1 wt % to about 75 wt %; a second component comprising a hydrophilic polymer and/or a pre-polymer compound at a concentration of from about 1 wt % to about 30 wt %; and a third component comprising a cross-linking agent, and/or a coupling agent at a concentration of from about 0.01 wt % to about 30 wt %.
    Type: Application
    Filed: February 17, 2012
    Publication date: August 22, 2013
    Applicant: ARCHON TECHNOLOGIES LTD.
    Inventors: AHMED M. SHAHIN, CONRAD AYASSE
  • Patent number: 8501135
    Abstract: A method of reducing sulfur compounds from an incoming gas stream, comprising flowing the gas stream over a hydrolysis catalyst to convert COS and CS2 to H2S and reduce SO2 to elemental sulfur to form an effluent stream; providing an acidic gas removal unit comprising an absorbent; flowing said effluent stream over said absorbent to produce a stream free of acidic gases; applying an acidic-gas desorption mode to said acidic-gas rich absorbent to produce an acidic gas stream; introducing oxygen to said acidic gas-rich stream; providing a direct oxidation vessel containing catalyst suitable for catalyzing the oxidation of the H2S to sulfur wherein the temperature of the vessel is at or above the sulfur dew point at the reaction pressure; and flowing said acidic gas-rich stream over said catalyst to produce a processed stream having a reduced level of sulfur compounds.
    Type: Grant
    Filed: July 10, 2012
    Date of Patent: August 6, 2013
    Assignee: Archon Technologies Ltd.
    Inventors: Alan Ayasse, Ahmed M. Shahin, Conrad Ayasse
  • Publication number: 20070237194
    Abstract: The present invention provides a compact analog directly modulated laser configuration that is suitable for use in the field that uses electrical feedback to compensate for non-linearity in real time, such that no matter how the LI curve changes, the electrical feedback compensates for non-linearity by amplifying a portion of the output analog optical signal and combining it with the input analog electrical signal using the standard control method of negative feedback. When the gain of the feedback loop is relatively high, the overall transfer function of the system is primarily dependent on the feedback loop gain block, which is substantially linear. This is accomplished by incorporating a relatively large bandwidth photo-detector at the back facet of the laser that both monitors the output power of the system and provides a feedback signal to the linearization control circuit, as well as an amplifier.
    Type: Application
    Filed: April 5, 2006
    Publication date: October 11, 2007
    Inventor: M. Shahine
  • Patent number: 6188861
    Abstract: Apparatus and method for creating quality pictorial color images include a charging device for uniformly charging a photoconductive member of a first tri-level xerographic module to a predetermined voltage level; using a controller and a ROS device for creating tri-level latent electrostatic images including CAD image areas and DAD image areas having different voltage levels respectively; developing the CAD image areas and the DAD image areas with yellow (Y) and a first black (K1) marking materials respectively to form a first composite color separation image of a desired final pictorial image; transferring the first composite color separation image onto an intermediate transfer member; similarly forming and developing a second composite color separation image on a second tri-level xerographic module using Magenta (M) and a second black (K2) marking material; transferring the second composite color separation image, in registration with the first composite color separation image, onto the intermediate transfe
    Type: Grant
    Filed: March 3, 2000
    Date of Patent: February 13, 2001
    Assignee: Xerox Corporation
    Inventors: Delmer G. Parker, Michael M. Shahin
  • Patent number: 6163672
    Abstract: Apparatus and method for creating highly registered quality pictorial color images include a first tri-level xerographic module using first and second color marking materials for creating and developing a first tri-level image including custom CAD and custom DAD image areas having different voltage levels respectively to form a first composite color separation image; a transfer station for transferring the first composite color separation image onto an intermediate transfer member; a second tri-level xerographic module using third and fourth color marking materials for similarly creating and developing a second tri-level image including custom CAD and custom DAD image areas having different voltage levels respectively to form a second composite color image; a transfer station for transferring the second composite color separation image, in registration onto the intermediate transfer member; a third tri-level xerographic module using fifth and sixth color marking materials for similarly creating and developing
    Type: Grant
    Filed: June 30, 1999
    Date of Patent: December 19, 2000
    Assignee: Xerox Corporation
    Inventors: Delmer G. Parker, Michael M. Shahin
  • Patent number: 5983065
    Abstract: A method including:providing a facility with at least one controlled access electronic printing machine;printing original documents with the controlled access electronic printing machine, wherein printed images formed thereby arise from marking materials containing at least one photoactive additive;equipping all uncontrolled access reprographic devices within the facility with a secure illumination source capable of exposing an object document with sufficient intensity to activate the photoactive additive; andilluminating the object document with the secure illumination source of the uncontrolled access reprographic device, wherein the object documents having original document images printed thereon cannot be copied or scanned in a normal copy or scan illumination interval.
    Type: Grant
    Filed: July 23, 1997
    Date of Patent: November 9, 1999
    Assignee: Xerox Corporation
    Inventors: Jeffrey J. Folkins, Michael M. Shahin, Craig A. Smith, Michael A. Parisi, Lingappa K. Mestha
  • Patent number: 5923834
    Abstract: In one embodiment, a server electrically connected to an image processing machine provides local data access and includes a monitor component, an analysis and prediction component to analyze data to track machine trends and predict machine subsytem and element faults, a diagnostic component capable of machine diagnostics at a higher level, components, and a communication component to provide a remote communication link. In a second embodiment, a first level of server modules are directly connected to given machines, a second level of server modules with trend analysis and diagnostic capability are connected to a network and associated with a set of machines on the network, and a third level of server modules are associated with a plurality of sets of machines on the network with the analysis and prediction components and diagnostic components providing trend data, fault prediction data, and machine corrective data for the plurality of sets of machines.
    Type: Grant
    Filed: June 17, 1996
    Date of Patent: July 13, 1999
    Assignee: Xerox Corporation
    Inventors: Tracy E. Thieret, Charles P. Holt, Michael M. Shahin, Robert P. Siegel
  • Patent number: 5514505
    Abstract: Disclosed is a process which comprises (a) providing a migration imaging member comprising (1) a substrate and (2) a softenable layer comprising a softenable material and a photosensitive migration marking material present in the softenable layer as a monolayer of particles situated at or near the surface of the softenable layer spaced from the substrate; (b) uniformly charging the imaging member; (3) imagewise exposing the charged imaging member to activating radiation at a wavelength to which the migration marking material is sensitive; (d) subsequent to step (c), causing the softenable material to soften and enabling a first portion of the migration marking material to migrate through the softenable material toward the substrate in an imagewise pattern while a second portion of the migration marking material remains substantially unmigrated within the softenable layer; and (e) contacting the second portion of the migration marking material with a transparentizing agent which transparentizes migration marki
    Type: Grant
    Filed: May 15, 1995
    Date of Patent: May 7, 1996
    Assignee: Xerox Corporation
    Inventors: William W. Limburg, Joseph Mammino, George Liebermann, Clifford H. Griffiths, Michael M. Shahin, Shadi L. Malhotra, Liqin Chen, Marie-Eve Perron
  • Patent number: 5510879
    Abstract: A process for charging layered imaging members by the transfer of ions thereto from an ionically conductive medium.
    Type: Grant
    Filed: May 27, 1994
    Date of Patent: April 23, 1996
    Assignee: Xerox Corporation
    Inventors: John S. Facci, Richard B. Lewis, Milan Stolka, Martin A. Abkowitz, Michael J. Levy, Joseph Mammino, Michael M. Shahin
  • Patent number: 5166016
    Abstract: A photoconductive imaging member comprised of a supporting substrate and thereover a charge transfer complex comprised of a polysilylene donor polymer and an electron acceptor.
    Type: Grant
    Filed: August 1, 1991
    Date of Patent: November 24, 1992
    Assignee: Xerox Corporation
    Inventors: Santokh S. Badesha, Michael M. Shahin, Damodar M. Pai
  • Patent number: 4333730
    Abstract: Novel meta-phenylenediamines are provided for use as couplers with dye bases in hair dye compositions. These meta-phenylenediamines have the formula: ##STR1## in which n is 2, 3 or 4. Their acid addition salts may also be used.
    Type: Grant
    Filed: April 18, 1980
    Date of Patent: June 8, 1982
    Assignee: Societe Anonyme dite: L'Oreal
    Inventors: Andree Bugaut, Majdi M. Shahin, Jean-Jacques H. Vandenbossche, Gregoire Kalopissis
  • Patent number: 4330292
    Abstract: The invention resides in the use of the compounds having the formula given below, or an acid salt thereof, as couplers in dyeing compositions for keratin fibres which contain an oxidation base: ##STR1## in which formula n is equal to 2, 3 or 4 and R.sub.1 and R.sub.2 are identical or different and represent an alkyl group having from 1 to 4 carbon atoms.
    Type: Grant
    Filed: December 11, 1980
    Date of Patent: May 18, 1982
    Assignee: L'Oreal
    Inventors: Andree Bugaut, Jean-Jacques M. Vandenbossche, Majdi M. Shahin, Gregoire Kalopissis