Patents by Inventor Rachid Kerboua

Rachid Kerboua 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).

  • Thermally crosslinked polymers
    Patent number: 7166244
    Abstract: Crosslinking between polymer chains having olefin groups occurs by heating the polymer chains in the presence of a catalyst. Mixtures of polymer and catalyst can be dried and cast into films at ambient temperatures and remain non-crosslinked and soluble for extended periods. However, upon heating of the polymer to temperatures of about 300° C. or greater in the presence of a catalyst, the polymer chains of the film are cured to produce an insoluble crosslinked matrix. The sudden and relatively complete nature of the crosslinking between the polymers under specific conditions is particularly useful to allow chromophores poled in a noncrosslinked polymer mixture to retain their uniform orientation after crosslinking has occurred.
    Type: Grant
    Filed: July 26, 2005
    Date of Patent: January 23, 2007
    Assignee: General Electric Company
    Inventors: James Anthony Cella, Rachid Kerboua
  • Thermally crosslinked polymers
    Publication number: 20050258407
    Abstract: Crosslinking between polymer chains having olefin groups occurs by heating the polymer chains in the presence of a catalyst. Mixtures of polymer and catalyst can be dried and cast into films at ambient temperatures and remain non-crosslinked and soluble for extended periods. However, upon heating of the polymer to temperatures of about 300° C. or greater in the presence of a catalyst, the polymer chains of the film are cured to produce an insoluble crosslinked matrix. The sudden and relatively complete nature of the crosslinking between the polymers under specific conditions is particularly useful to allow chromophores poled in a noncrosslinked polymer mixture to retain their uniform orientation after crosslinking has occurred.
    Type: Application
    Filed: July 26, 2005
    Publication date: November 24, 2005
    Inventors: James Cella, Rachid Kerboua
  • Curable silicone adhesive compositions
    Patent number: 6602551
    Abstract: A silicone composition is provided which comprises a vulcanizable adhesive formulation which comprises at least one oxygen-substituted allyl aromatic compound, a vinyl-containing polydiorganosiloxane, a hydrogen-containing polysiloxane, and a catalytic amount of a hydrosilylation catalyst. Further embodiments of the present invention include the oxygen-substituted allyl aromatic compound which provides adhesion to a substrate when present in a silicone composition and a method to provide cohesive failure to a silicone composition and a polyamide substrate.
    Type: Grant
    Filed: July 2, 2001
    Date of Patent: August 5, 2003
    Assignee: General Electric Company
    Inventors: Rachid Kerboua, Judith Stein
  • Curable silicone adhesive compositions
    Publication number: 20030049465
    Abstract: A silicone composition is provided which comprises a vulcanizable adhesive formulation which comprises at least one oxygen-substituted allyl aromatic compound, a vinyl-containing polydiorganosiloxane, a hydrogen-containing polysiloxane, and a catalytic amount of a hydrosilylation catalyst. Further embodiments of the present invention include the oxygen-substituted allyl aromatic compound which provides adhesion to a substrate when present in a silicone composition and a method to provide cohesive failure to a silicone composition and a polyamide substrate.
    Type: Application
    Filed: July 2, 2001
    Publication date: March 13, 2003
    Applicant: General Electric Company
    Inventors: Rachid Kerboua, Judith Stein
  • Polyimides, process for the preparation thereof and use thereof as alignment films for liquid crystal devices
    Patent number: 6500913
    Abstract: The present invention relates to a novel polyimide of the general formula (1) and a process for the preparation thereof.
    Type: Grant
    Filed: March 13, 2001
    Date of Patent: December 31, 2002
    Assignees: Council of Scientific and Industrial Research, Laboratoire des Materiaux Organiques a Proprietes Speciques
    Inventors: Jinu Suju Mathew, Subhash Pundlik Vernekar, Reges Mercier, Rachid Kerboua
  • Novel polyimides, process for the preparation thereof and use thereof as alignment films for liquid crystal devices
    Publication number: 20020142110
    Abstract: The present invention relates to a novel polyimide of the general formula (1) 1
    Type: Application
    Filed: March 13, 2001
    Publication date: October 3, 2002
    Applicant: COUNCIL OF SCIENTIFIC AND INDUSTRIAL RESEARCH
    Inventors: Jinu Suju Mathew, Subhash Pundlik Vernekar, Reges Mercier, Rachid Kerboua