Patents by Inventor Abdelhak Bensaoula
Abdelhak Bensaoula 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).
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Patent number: 7094823Abstract: Maghnia or Mostaganem bentonites, are activated by contacting the Maghnia or Mostaganem bentonite with an acid solution of selected concentration and then drying the Maghnia or Mostaganem bentonite to form an activated bentonite catalyst. This activated bentonite catalyst may be used to polymerize a vinyl, acrylic, cyclic ether, aldehyde, lactone or olefin monomer. In a further embodiment, a perflourinated amine or diamine is synthesized by contacting a Maghnia or Mostaganem bentonite with an acid solution of selected concentration, drying the Maghnia or Mostaganem bentonite, and absorbing a secondary amine with the Maghnia or Mostaganem bentonite to form a perflouroamide iodide salt. The perflouramide idodide salt can then be extracted with a polar solvent and neutralized by the use of a basic solution.Type: GrantFiled: October 3, 2002Date of Patent: August 22, 2006Inventors: Mohammed Belbachir, Abdelhak Bensaoula
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Patent number: 6939775Abstract: A method for storing energy in a capacitor includes connecting a first conductor to a first electrode. A second conductor is connected to a second electrode. The second electrode is separated from the first electrode by a dielectric layer. The dielectric layer includes a layer of boron nitride, BN. The conductivity of the dielectric layer is lower than the conductivity of the first electrode or the second electrode. A voltage of at least 5 volts is applied between the first electrode and the second electrode. The voltage is applied by means of the first and second conductors.Type: GrantFiled: May 27, 2003Date of Patent: September 6, 2005Assignee: University of HoustonInventors: Abdelhak Bensaoula, Nacer Badi
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Publication number: 20050125976Abstract: A method for storing energy in a capacitor includes connecting a first conductor to a first electrode. A second conductor is connected to a second electrode. The second electrode is separated from the first electrode by a dielectric layer. The dielectric layer includes a layer of boron nitride, BN. The conductivity of the dielectric layer is lower than the conductivity of the first electrode or the second electrode. A voltage of at least 5 volts is applied between the first electrode and the second electrode. The voltage is applied by means of the first and second conductors.Type: ApplicationFiled: May 27, 2003Publication date: June 16, 2005Inventors: Abdelhak Bensaoula, Nacer Badi
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Patent number: 6881979Abstract: This disclosure describes one-chip micro-integrated optoelectronic sensors and methods for fabricating and using the same. The sensors may include an optical emission source, optical filter and a photodetector fabricated on the same transparent substrate using the same technological processes. Optical emission may occur when a bias voltage is applied across a metal-insulator-semiconductor Schottky contact or a p-n junction. The photodetector may be a Schottky contact or a p-n junction in a semiconductor. Some sensors can be fabricated on optically transparent substrate and employ back-side illumination. In the other sensors provided, the substrate is not transparent and emission occurs from the edge of a p-n junction or through a transparent electrode. The sensors may be used to measure optical absorption, optical reflection, scattering or fluorescence.Type: GrantFiled: August 18, 2003Date of Patent: April 19, 2005Assignee: University of HoustonInventors: David Starikov, Igor Berishev, Abdelhak Bensaoula
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Publication number: 20040080011Abstract: This disclosure describes one-chip micro-integrated optoelectronic sensors and methods for fabricating and using the same. The sensors may include an optical emission source, optical filter and a photodetector fabricated on the same transparent substrate using the same technological processes. Optical emission may occur when a bias voltage is applied across a metal-insulator-semiconductor Schottky contact or a p-n junction. The photodetector may be a Schottky contact or a p-n junction in a semiconductor. Some sensors can be fabricated on optically transparent substrate and employ back-side illumination. In the other sensors provided, the substrate is not transparent and emission occurs from the edge of a p-n junction or through a transparent electrode. The sensors may be used to measure optical absorption, optical reflection, scattering or fluorescence.Type: ApplicationFiled: August 18, 2003Publication date: April 29, 2004Applicant: UNIVERSITY OF HOUSTONInventors: David Starikov, Igor Berishev, Abdelhak Bensaoula
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Patent number: 6608360Abstract: This disclosure describes one-chip micro-integrated optoelectronic sensors and methods for fabricating and using the same. The sensors may include an optical emission source, optical filter and a photodetector fabricated on the same transparent substrate using the same technological processes. Optical emission may occur when a bias voltage is applied across a metal-insulator-semiconductor Schottky contact or a p-n junction. The photodetector may be a Schottky contact or a p-n junction in a semiconductor. Some sensors can be fabricated on optically transparent substrate and employ back-side illumination. In the other sensors provided, the substrate is not transparent and emission occurs from the edge of a p-n junction or through a transparent electrode. The sensors may be used to measure optical absorption, optical reflection, scattering or fluorescence.Type: GrantFiled: December 15, 2000Date of Patent: August 19, 2003Assignee: University of HoustonInventors: David Starikov, Igor Berishev, Abdelhak Bensaoula
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Patent number: 6570753Abstract: A method for storing energy in a capacitor includes connecting a first conductor to a first electrode. A second conductor is connected to a second electrode. The second electrode is separated from the first electrode by a dielectric layer. The dielectric layer includes a layer of boron nitride, BN. The conductivity of the dielectric layer is lower than the conductivity of the first electrode or the second electrode. A voltage of at least 5 volts is applied between the first electrode and the second electrode. The voltage is applied be means of the first and second conductors.Type: GrantFiled: May 25, 2001Date of Patent: May 27, 2003Assignee: University of HoustonInventors: Abdelhak Bensaoula, Nacer Badi
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Publication number: 20030069446Abstract: Maghnia or Mostaganem bentonites, are activated by contacting the Maghnia or Mostaganem bentonite with an acid solution of selected concentration and then drying the Maghnia or Mostaganem bentonite to form an activated bentonite catalyst. This activated bentonite catalyst may be used to polymerize a vinyl, acrylic, cyclic ether, aldehyde, lactone or olefin monomer. In a further embodiment, a perflourinated amine or diamine is synthesized by contacting a Maghnia or Mostaganem bentonite with an acid solution of selected concentration, drying the Maghnia or Mostaganem bentonite, and absorbing a secondary amine with the Maghnia or Mostaganem bentonite to form a perflouroamide iodide salt. The perflouramide idodide salt can then be extracted with a polar solvent and neutralized by the use of a basic solution.Type: ApplicationFiled: October 3, 2002Publication date: April 10, 2003Inventors: Mohammed Belbachir, Abdelhak Bensaoula
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Publication number: 20030035261Abstract: A method for storing energy in a capacitor includes connecting a first conductor to a first electrode. A second conductor is connected to a second electrode. The second electrode is separated from the first electrode by a dielectric layer. The dielectric layer includes a layer of boron nitride, BN. The conductivity of the dielectric layer is lower than the conductivity of the first electrode or the second electrode. A voltage of at least 5 volts is applied between the first electrode and the second electrode. The voltage is applied be means of the first and second conductors.Type: ApplicationFiled: May 25, 2001Publication date: February 20, 2003Inventors: Abdelhak Bensaoula, Nacer Badi
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Publication number: 20020074553Abstract: This disclosure describes one-chip micro-integrated optoelectronic sensors and methods for fabricating and using the same. The sensors may include an optical emission source, optical filter and a photodetector fabricated on the same transparent substrate using the same technological processes. Optical emission may occur when a bias voltage is applied across a metal-insulator-semiconductor Schottky contact or a p-n junction. The photodetector may be a Schottky contact or a p-n junction in a semiconductor. Some sensors can be fabricated on optically transparent substrate and employ back-side illumination. In the other sensors provided, the substrate is not transparent and emission occurs from the edge of a p-n junction or through a transparent electrode. The sensors may be used to measure optical absorption, optical reflection, scattering or fluorescence.Type: ApplicationFiled: December 15, 2000Publication date: June 20, 2002Inventors: David Starikov, Igor Berishev, Abdelhak Bensaoula
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Publication number: 20020002260Abstract: Maghnia or Mostaganem bentonites, are activated by contacting the Maghnia or Mostaganem bentonite with an acid solution of selected concentration and then drying the Maghnia or Mostaganem bentonite to form an activated bentonite catalyst. This activated bentonite catalyst may be used to polymerize a vinyl, acrylic, cyclic ether, aldehyde, lactone or olefin monomer. In a further embodiment, a perflourinated amine or diamine is synthesized by contacting a Maghnia or Mostaganem bentonite with an acid solution of selected concentration, drying the Maghnia or Mostaganem bentonite, and absorbing a secondary amine with the Maghnia or Mostaganem bentonite to form a perflouroamide iodide salt. The perflouramide idodide salt can then be extracted with a polar solvent and neutralized by the use of a basic solution.Type: ApplicationFiled: May 30, 2001Publication date: January 3, 2002Inventors: Mohammed Belbachir, Abdelhak Bensaoula
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Patent number: 6274527Abstract: Maghnia or Mostaganem bentonites, are activated by contacting the Maghnia or Mostaganem bentonite with an acid solution of selected concentration and then drying the Maghnia or Mostaganem bentonite to form an activated bentonite catalyst. This activated bentonite catalyst may be used to polymerize a vinyl, acrylic, cyclic ether, aldehyde, lactone or olefin monomer. In a further embodiment, a perflourinated amine or diamine is synthesized by contacting a Maghnia or Mostaganem bentonite with an acid solution of selected concentration, drying the Maghnia or Mostaganem bentonite, and absorbing a secondary amine with the Maghnia or Mostaganem bentonite to form a perflouroamide iodide salt. The perflouramide idodide salt can then be extracted with a polar solvent and neutralized by the use of a basic solution.Type: GrantFiled: March 27, 2000Date of Patent: August 14, 2001Inventors: Mohammed Belbachir, Abdelhak Bensaoula
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Patent number: 6218771Abstract: Field emitter as a source of electrons and method for making are provided. The emitter is formed by growth of a nitride compound of a group III element or alloys of group III elements on a substrate having a lattice mismatch with the thin film. The lattice mismatch causes columnar growth in the film. The micro columns have tips, thus forming an array of crystalline microtips of the low work function nitride material. The nitride compound is doped during growth. Gallium nitride grown on (111) silicon and doped with silicon produces a surface having low threshold electric field for emission and high current per unit area.Type: GrantFiled: June 26, 1998Date of Patent: April 17, 2001Assignee: University of HoustonInventors: Igor Berishev, Abdelhak Bensaoula
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Patent number: 6054333Abstract: A method is provided for determining etching characteristics during gas phase etching of thin film materials such as semiconductors during manufacture of devices. Etch end point, rate of etching, uniformity of etching and uniformity of growth of thin films can be determined. Isotopically enriched materials are deposited in layers which may be only a few nanometers thick at selected locations during growth of the thin films. The isotopes are removed during gas phase etching, carried by gas into an analysis chamber, condensed on a surface, and analyzed for isotopical composition. Mass spectroscopy of recoiled ions is a preferred detection technique.Type: GrantFiled: October 14, 1997Date of Patent: April 25, 2000Assignee: University of HoustonInventor: Abdelhak Bensaoula
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Patent number: 5927325Abstract: A valve to allow digitally addressable flow controllers is provided. An array of micromachined valves having a range of flow capacities and individually addressable while functioning in an On/Off mode allows flow controllers and similar devices high resolution, linearity and reproducibility. The incorporation of diamond or diamond-like materials in all flow paths extends the application of the valves to corrosive materials and permits higher process temperatures and lower particulate generation.Type: GrantFiled: October 25, 1996Date of Patent: July 27, 1999Assignee: Inpod, Inc.Inventors: Abdelhak Bensaoula, John Gregory Hollingshead, Lawrence Frank Latham, Jr.
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Patent number: 5851310Abstract: An indium phosphide photovoltaic cell is provided where one or more quantum wells are introduced between the conventional p-conductivity and n-conductivity indium phosphide layer. The approach allows the cell to convert the light over a wider range of wavelengths than a conventional single junction cell and in particular convert efficiently transparency losses of the indium phosphide conventional cell. The approach hence may be used to increase the cell current output.A method of fabrication of photovoltaic devices is provided where ternary InAsP and InGaAs alloys are used as well material in the quantum well region and results in an increase of the cell current output.Type: GrantFiled: December 6, 1995Date of Patent: December 22, 1998Assignee: University of HoustonInventors: Alexandre Freundlich, Philippe Renaud, Mauro Francisco Vilela, Abdelhak Bensaoula
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Patent number: 5800630Abstract: A monolithic, tandem photovoltaic device is provided having an indium phosphide tunnel junction lattice-matched to adjoining subcells and having high peak current densities and low electrical resistance. A method is provided for relatively low-temperature epitaxial growth of a tunnel junction and a subcell over the tunnel junction at temperatures which leave intact the desirable characteristics of the tunnel junction.Type: GrantFiled: December 5, 1994Date of Patent: September 1, 1998Assignee: University of HoustonInventors: Mauro F. Vilela, Abdelhak Bensaoula, Alexandre Freundlich, Philippe Renaud, Nasr-Eddine Medelci
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Patent number: 5407491Abstract: A monolithic, tandem photovoltaic device is provided having an indium gallium arsenide tunnel junction lattice-matched to adjoining subcells and having high peak current densities and low electrical resistance. A method is provided for relatively low-temperature epitaxial growth of a subcell over the tunnel junction at temperatures which leave intact the desirable characteristics of the tunnel junction.Type: GrantFiled: April 8, 1993Date of Patent: April 18, 1995Assignee: University of HoustonInventors: Alexandre Freundlich, Mauro F. Vilela, Abdelhak Bensaoula, Alex Ignatiev