Patents by Inventor Abdellah Ajji

Abdellah Ajji 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: 11987700
    Abstract: The present application relates to polymer compositions that provide barrier properties to oxygen, water vapor and/or hydrocarbons, to polymer film or sheet comprising the polymer composition and to their use in the manufacture or preparation of plastic material and/or plastic packaging. The present application also relates to a method of reducing oxygen water vapor and/or hydrocarbons permeability in plastic material and/or plastic packaging.
    Type: Grant
    Filed: July 20, 2020
    Date of Patent: May 21, 2024
    Assignee: POLYVALOR, LIMITED PARTNERSHIP
    Inventors: Ebrahim Jalali Dil, Abdellah Ajji
  • Publication number: 20230383098
    Abstract: A composition of matter having oxygen scavenging properties comprises a blend of a base polymer, a butadiene polymer, and titanium dioxide in an amount sufficient to catalyze reaction of oxygen with the butadiene polymer. In further aspects, methods for making the compositions herein and packaging film structures comprising the compositions herein, and packaging articles formed of the same, are also provided.
    Type: Application
    Filed: August 1, 2023
    Publication date: November 30, 2023
    Inventors: Zahra Kordjazi, Abdellah Ajji
  • Patent number: 11713388
    Abstract: A composition of matter having oxygen scavenging properties comprises a blend of a base polymer, a butadiene polymer, and titanium dioxide in an amount sufficient to catalyze reaction of oxygen with the butadiene polymer. In further aspects, methods for making the compositions herein and packaging film structures comprising the compositions herein, and packaging articles formed of the same, are also provided.
    Type: Grant
    Filed: October 28, 2020
    Date of Patent: August 1, 2023
    Assignee: POLYVALOR, LIMITED PARTNERSHIP
    Inventors: Zahra Kordjazi, Abdellah Ajji
  • Publication number: 20220403327
    Abstract: A three-dimensional (3D) cell culture system comprising: a solid porous polymeric support, preferably comprising a biocompatible polymer; a first type of cells bound to the solid porous polymeric support; and a biocompatible hydrogel comprising a second type of cells, wherein biocompatible hydrogel is in physical contact with the solid porous polymeric support, is described. Methods for preparing this 3D cell culture system, as well as uses of this system for example for anticancer drug screening, are also described.
    Type: Application
    Filed: November 6, 2020
    Publication date: December 22, 2022
    Inventors: Abdellah AJJI, Bernard NISOL, Derek Hadar ROSENZWEIG, Michael Robert WERTHEIMER, Mansoureh MOHSENI GARAKANI
  • Publication number: 20220251380
    Abstract: The present application relates to polymer compositions that provide barrier properties to oxygen, water vapor and/or hydrocarbons, to polymer film or sheet comprising the polymer composition and to their use in the manufacture or preparation of plastic material and/or plastic packaging. The present application also relates to a method of reducing oxygen water vapor and/or hydrocarbons permeability in plastic material and/or plastic packaging.
    Type: Application
    Filed: July 20, 2020
    Publication date: August 11, 2022
    Applicant: POLYVALOR, SOCIÉTÉ EN COMMANDITE
    Inventors: Ebrahim JALALI DIL, Abdellah AJJI
  • Patent number: 11371992
    Abstract: An assay device is provided for use in determining the presence of a target analyte in a sample. The assay device comprises a solid platform comprising a fibrous mat, the solid platform impregnated with a first FRET chromophore. An antibody-FRET chromophore conjugate is immobilized on a surface of the solid platform, wherein the antibody-FRET chromophore conjugate comprises an antibody affixed to a second FRET chromophore. The first FRET chromophore and the second FRET chromophore are selected to provide an energy transfer from one to another when located within a Förster distance with respect to each other, thereby forming a FRET donor-acceptor chromophore pair. In a further aspect, a method of detecting a target analyte in a sample is provided. In yet a further aspect, packaging sheet materials and packaging articles employing the assay device under certain conditions are provided.
    Type: Grant
    Filed: October 1, 2019
    Date of Patent: June 28, 2022
    Assignee: POLYVALOR, LIMITED PARTNERSHIP
    Inventors: Bentolhoda Heli, Abdellah Ajji
  • Publication number: 20210130588
    Abstract: A composition of matter having oxygen scavenging properties comprises a blend of a base polymer, a butadiene polymer, and titanium dioxide in an amount sufficient to catalyze reaction of oxygen with the butadiene polymer. In further aspects, methods for making the compositions herein and packaging film structures comprising the compositions herein, and packaging articles formed of the same, are also provided.
    Type: Application
    Filed: October 28, 2020
    Publication date: May 6, 2021
    Inventors: Zahra Kordjazi, Abdellah Ajji
  • Publication number: 20200103404
    Abstract: An assay device is provided for use in determining the presence of a target analyte in a sample. The assay device comprises a solid platform comprising a fibrous mat, the solid platform impregnated with a first FRET chromophore. An antibody-FRET chromophore conjugate is immobilized on a surface of the solid platform, wherein the antibody-FRET chromophore conjugate comprises an antibody affixed to a second FRET chromophore. The first FRET chromophore and the second FRET chromophore are selected to provide an energy transfer from one to another when located within a Förster distance with respect to each other, thereby forming a FRET donor-acceptor chromophore pair. In a further aspect, a method of detecting a target analyte in a sample is provided. In yet a further aspect, packaging sheet materials and packaging articles employing the assay device under certain conditions are provided.
    Type: Application
    Filed: October 1, 2019
    Publication date: April 2, 2020
    Inventors: Bentolhoda Heli, Abdellah Ajji
  • Patent number: 8318618
    Abstract: A mat having a highly uniform porosity distribution is produced by consolidating 15 or more layers of melt blown webs (or the like) having different orientations. Control over the porosity is provided by using webs that exhibit a narrow, unimodal distribution of fiber diameters over the bulk of its distribution, such as in the top 80%. A compliance of the mats can be chosen by selecting a number and orientation of the webs. It is thus possible to produce mats that are good candidates for vascular grafts, for example. The uniformity of the porosity within the range of 6 ?m to 30 ?m permits seeding of the vascular graft with endothelial and smooth muscle cells. The mats have the demonstrated ability to retain, and support growth of, smooth muscle cells and endothelial cells.
    Type: Grant
    Filed: May 21, 2008
    Date of Patent: November 27, 2012
    Assignee: National Research Council of Canada
    Inventors: Abdellah Ajji, Marie Moreno, Martin Bureau
  • Publication number: 20120276367
    Abstract: There is provided a method for controlling the morphology of a cast film. The method comprises extruding a cast film by controlling a cooling rate of the cast film by applying on the film a gas at a gas cooling rate of at least about 0.4 cm3/s per kg/hr in accordance with the extrudate flow rate.
    Type: Application
    Filed: June 18, 2010
    Publication date: November 1, 2012
    Inventors: Pierre Carreau, Seyed Hesamoddin Tabatabaei, Abdellah Ajji
  • Publication number: 20120141553
    Abstract: The present invention relates to a neuroimplant. The neuroimplant comprises biocompatible polymer fibres; the polymer fibres are grouped in a parallel arrangement, and the group of fibres is flexible. The present invention also relates to the use of the neuroimplant to facilitate the repair of damaged brain tissue.
    Type: Application
    Filed: June 30, 2010
    Publication date: June 7, 2012
    Inventors: Abdellah Ajji, Mahmud Bani, Marianna Sikorska
  • Publication number: 20100305687
    Abstract: A mat having a highly uniform porosity distribution is produced by consolidating 15 or more layers of melt blown webs (or the like) having different orientations. Control over the porosity is provided by using webs that exhibit a narrow, unimodal distribution of fiber diameters over the bulk of its distribution, such as in the top 80%. A compliance of the mats can be chosen by selecting a number and orientation of the webs. It is thus possible to produce mats that are good candidates for vascular grafts, for example. The uniformity of the porosity within the range of 6 ?m to 30 ?m permits seeding of the vascular graft with endothelial and smooth muscle cells. The mats have the demonstrated ability to retain, and support growth of, smooth muscle cells and endothelial cells.
    Type: Application
    Filed: May 21, 2008
    Publication date: December 2, 2010
    Inventors: Abdellah Ajji, Marie Moreno, Martin Bureau
  • Patent number: 5864403
    Abstract: A system and apparatus for the measurement of absolute biaxial birefringence of plastic materials is described. The materials which must be at least partially transparent can be constituted of one or several similar or dissimilar layers. In the latter case, the birefringence of each material can be determined. The technique uses a multiwavelength white light source that provides at least two beams projected at different angles of incidence on the sample. The beams pass through first polarizers before they are incident on the sample and through second polarizers after they have passed through the sample. The beams are then directed to a detector for measuring each beam intensity or transmittance as a function of wavelength for the incident angles at different times, and are analyzed using nonlinear regressions to determine retardation. By the knowledge of the thickness of the material, the absolute biaxial birefringences are calculated for any specific wavelength.
    Type: Grant
    Filed: February 23, 1998
    Date of Patent: January 26, 1999
    Assignee: National Research Council of Canada
    Inventors: Abdellah Ajji, Jacques Guevremont
  • Patent number: 5695698
    Abstract: A process and apparatus for the continuous solid state forming of semicrystalline polymers using roll-drawing is disclosed. The output of an extruded thick polymer profile is stabilized by a gear pump. The profile is passed through a die for the desired geometry and a cooling calibrator. The profile is heat conditioned in heating tunnels to a temperature below the melting point prior to deformation between sets of rolls. A plurality, e.g. four pairs of rolls apply both compression and tension to the polymer profile. The tension applied on the profile, the roll gap, the linear speed of the profile and its temperature are monitored and controlled for the amount of polymer deformation and relaxation allowed. High tensile modulus and strength, both in the longitudinal and transverse direction of the polymeric strip, can be achieved.
    Type: Grant
    Filed: January 30, 1996
    Date of Patent: December 9, 1997
    Inventors: Abdellah Ajji, Michel M. Dumoulin, Jacques Dufour