Patents by Inventor Abderrahim Maazouz

Abderrahim Maazouz 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).

  • Process and installation for molding an optical lens
    Patent number: 7950917
    Abstract: The object of the invention is a process for molding an optical element such as a lens (2). According to the invention, the element is obtained by a reaction injection molding process comprising the steps of mixing at least two polymerizing reactants and forcing the obtained reacting mixture by an injection duct (5) for filling under pressure a scaled mold cavity (4) having an entry side (43) provided with a casting opening (42) and an evacuation side (44) and providing a laminated flow of mixture in a spout (6) having a progressive enlarging transversal section between the outlet opening (52) of the injection duct (5) and the casting opening (42) of the mold cavity (4), for avoiding any turbulent area in said laminated flow, said evacuation side (44) being provided with means (45) for evacuating air contained in the mixture during mold filling. The invention also covers the molding installation adapted for using such a process.
    Type: Grant
    Filed: February 25, 2005
    Date of Patent: May 31, 2011
    Assignee: Institut National Des Sciences Appliquees (Insa)
    Inventors: Noémie Lesartre, Jérôme Dupuy, Abderrahim Maazouz, Jean-Pierre Pascault
  • Process and Installation for Molding an Optical Lens
    Publication number: 20080230931
    Abstract: The object of the invention is a process for molding an optical element such as a lens (2). According to the invention, the element is obtained by a reaction injection molding process comprising the steps of mixing at least two polymerizing reactants and forcing the obtained reacting mixture by an injection duct (5) for filling under pressure a scaled mold cavity (4) having an entry side (43) provided with a casting opening (42) and an evacuation side (44) and providing a laminated flow of mixture in a spout (6) having a progressive enlarging transversal section between the outlet opening (52) of the injection duct (5) and the casting opening (42) of the mold cavity (4), for avoiding any turbulent area in said laminated flow, said evacuation side (44) being provided with means (45) for evacuating air contained in the mixture during mold filling. The invention also covers the molding installation adapted for using such a process.
    Type: Application
    Filed: February 25, 2005
    Publication date: September 25, 2008
    Applicant: INSTITUT NATIONAL DES SCIENCES APPLIQUEES (INSA)
    Inventors: Noemie Lesartre, Jerome Dupuy, Abderrahim Maazouz, Jean-Pierre Pascault
  • Composition based on a heterogeneous PVDF and on an aromatic bis-imide, that can be crosslinked by ionizing radiation
    Publication number: 20040167282
    Abstract: The present invention relates to a composition based on a heterogeneous PVDF and on an aromatic bis-imide that can be crosslinked by ionizing radiation, in which the heterogeneous PVDF is a copolymer of vinylidene fluoride (VDF) and a comonomer, the said heterogeneous PVDF comprising:
    Type: Application
    Filed: December 22, 2003
    Publication date: August 26, 2004
    Inventors: Thierry Pascal, Abderrahim Maazouz