Patents by Inventor Mohammed Cherkaoui
Mohammed Cherkaoui 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: 9180000Abstract: A based device for use as tissue repair includes a median part between two end parts. The median and end parts have a different tensile stiffness.Type: GrantFiled: January 20, 2012Date of Patent: November 10, 2015Assignees: CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE, ASSOCIATION POUR LA RECHERCHE ET LE DEVELOPPEMENT DE METHODES ET PROCESSUS INDUSTRIELS “ARMINES”, GEORGIA TECH RESEARCH CORPORATION—GEORGIA INSTITUTE OF TECHNOLOGYInventors: Sabine Cantournet, Laurent Corte, Fabrice Detrez, David N. Ku, Mohammed Cherkaoui, Frances Baxter, Jason Bach
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Publication number: 20140039620Abstract: A based device for use as tissue repair includes a median part between two end parts. The median and end parts have a different tensile stiffness.Type: ApplicationFiled: January 20, 2012Publication date: February 6, 2014Applicant: GEORGIA TECH RESEARCH CORPORATION -GEORGIA INSTITTUTE OF TECHNOLOGYInventors: Sabine Cantournet, Laurent Corte, Fabrice Detrez, David N. Ku, Mohammed Cherkaoui, Frances Baxter, Jason Bach
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Patent number: 8557922Abstract: A diamine compound of formula (I) is proposed as well as polymers, copolymers, polyamic acids, polyamic acid esters, or polyimides based on such compound.Type: GrantFiled: September 14, 2012Date of Patent: October 15, 2013Assignee: Rolic AGInventors: Thomas Bachels, Zoubair Mohammed Cherkaoui, Guy Marck, Olivier Muller, Joachim Reichardt, Andreas Schuster, Hubert Seiberle, Peggy Studer, Thomas Peglow, Jean-Francois Eckert
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Publication number: 20130004679Abstract: A diamine compound of formula (I) is proposed as well as polymers, copolymers, polyamic acids, polyamic acid esters, or polyimides based on such compound.Type: ApplicationFiled: September 14, 2012Publication date: January 3, 2013Applicant: ROLIC AGInventors: Thomas BACHELS, Zoubair Mohammed CHERKAOUI, Guy MARCK, Olivier MULLER, Joachim REICHARDT, Andreas SCHUSTER, Hubert SEIBERLE, Peggy STUDER, Thomas PEGLOW, Jean-Francois ECKERT
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Patent number: 8329823Abstract: A diamine compound of formula (I) is proposed as well as polymers, copolymers, polyamic acids, polyamic acid esters, or polyimides based on such compound.Type: GrantFiled: December 1, 2011Date of Patent: December 11, 2012Assignee: ROLIC AGInventors: Thomas Bachels, Zoubair Mohammed Cherkaoui, Guy Marck, Olivier Muller, Joachim Reichardt, Andreas Schuster, Hubert Seiberle, Peggy Studer, Thomas Peglow, Jean-Francois Eckert
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Patent number: 8173749Abstract: A diamine compound of formula (I) is proposed as well as polymers, copolymers, polyamic acids, polyamic acid esters, or polyimides based on such compound.Type: GrantFiled: December 19, 2006Date of Patent: May 8, 2012Assignee: Rolic AGInventors: Thomas Bachels, Zoubair Mohammed Cherkaoui, Guy Marck, Olivier Muller, Joachim Reichardt, Andreas Schuster, Hubert Seiberle, Peggy Studer, Thomas Peglow, Jean-Francois Eckert
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Publication number: 20120076952Abstract: A diamine compound of formula (I) is proposed as well as polymers, copolymers, polyamic acids, polyamic acid esters, or polyimides based on such compound.Type: ApplicationFiled: December 1, 2011Publication date: March 29, 2012Applicant: ROLIC AGInventors: Thomas BACHELS, Zoubair Mohammed CHERKAOUI, Guy MARCK, Olivier MULLER, Joachim REICHARDT, Andreas SCHUSTER, Hubert SEIBERLE, Peggy STUDER, Thomas PEGLOW, Jean-François ECKERT
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Patent number: 8105662Abstract: The present invention relates to mesogenic, cross-linkable mixtures comprising (i) a cross-linkable liquid crystalline host compound comprising at least one cross-linkable liquid crystalline compound, and (ii) at least one chiral or achiral rod shaped additive component, wherein said additive component has a rigid core and comprises at least two fused or linked, optionally substituted, non-aromatic, aromatic, carbocyclic or heterocyclic groups, and also comprises at least one optionally substituted alkyl residue, and at least one polymerizable group and wherein the additive component has a transition temperature to the isotropic state of 40° C. or lower.Type: GrantFiled: November 25, 2004Date of Patent: January 31, 2012Assignee: Rolic AGInventors: Zoubair Mohammed Cherkaoui, Teodor Lukac, Joachim Reichardt, Klaus Schmitt
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Patent number: 8053039Abstract: The present invention is directed towards polymerizable dichroic azo dyes comprising azo-chromophores having at least one standard mesogenic ring system attached to said chromophores and at least one polymerizable group leading to dyes having sufficient solubilty and a very high order parameter.Type: GrantFiled: March 23, 2004Date of Patent: November 8, 2011Assignee: Rolic AGInventors: Thomas Peglow, Franco Moia, Zoubair Mohammed Cherkaoui, Mario Schwab
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Patent number: 7959990Abstract: The present invention concerns functionalized photoreactive compounds of formula (I), that are particularly useful in materials for the alignment of liquid crystals. Due to the adjunction of an electron withdrawing group to specific molecular systems bearing an unsaturation directly attached to two unsaturated ring systems, exceptionally high photosensitivities, excellent alignment properties as well as good mechanical robustness could be achieved in materials comprising said functionalized photoreactive compounds of the invention.Type: GrantFiled: September 15, 2006Date of Patent: June 14, 2011Assignee: Rolic AGInventors: Zoubair Mohammed Cherkaoui, Peggy Studer, Joachim Reichardt, Hubert Seiberle
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Patent number: 7687118Abstract: A diamine compound is proposed as well as polymers, copolymers, polyamic acids, polyamic acid esters, or polyimides based on such compound. The compound is represented by one of the general formulae (Ia) and (Ib). It could be shown that such structures, in particular for a specific choice of the residue B, provide, if e.g. used as orientation layers, a photostable, vertically aligning material with an improved VHR.Type: GrantFiled: October 5, 2005Date of Patent: March 30, 2010Assignee: Rolic AGInventors: Zoubair Mohammed Cherkaoui, Thomas Bachels, Guy Marck, Olivier Müller, Andreas Schuster, Hubert Seiberle
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Publication number: 20080293888Abstract: A diamine compound of formula (I) is proposed as well as polymers, copolymers, polyamic acids, polyamic acid esters, or polyimides based on such compound.Type: ApplicationFiled: December 19, 2006Publication date: November 27, 2008Applicant: ROLIC AGInventors: Thomas Bachels, Zoubair Mohammed Cherkaoui, Guy Marck, Olivier Muller, Joachim Reichardt, Andreas Schuster, Hubert Seiberle, Peggy Studer, Thomas Peglow, Jean-Francois Eckert
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Patent number: 6905739Abstract: A compound is of formula (I), in which: A1 to A4, E1 and E2 each independently represent hydrogen or an optionally-substituted hydrocarbon group; B1 and B2 each independently represent a single bond, an oxygen atom or an optionally-substituted hydrocarbon group; MG1 and MG2 each independently represent an optionally-substituted ring system; CG is a divalent or polyvalent chiral group. The optically active compound may be used as a doping agent for liquid crystals for a wide range of applications including solid state cholesteric filters for projection displays, circular polarisers, optical filters, etc.Type: GrantFiled: December 20, 2000Date of Patent: June 14, 2005Assignee: Rolic AGInventors: Zoubair Mohammed Cherkaoui, Klaus Schmitt
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Patent number: 6746729Abstract: Compounds of formula I: wherein the variables are defined as explained in the disclosure. The invention also provides liquid crystalline mixtures and optical or electro-optical devices including compounds of formula (I).Type: GrantFiled: October 17, 2001Date of Patent: June 8, 2004Assignee: Rolic AGInventors: Zoubair Mohammed Cherkaoui, Carsten Benecke, Klaus Schmitt
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Patent number: 6630076Abstract: A compound of formula (I): wherein MG1 and MG3 each independently represent an optionally-substituted aliphatic group with 1 to 80 C-atoms, in which one or more C-atoms may be replaced by a heteroatom, in such a way that oxygen atoms are not linked to one another; or an optionally-substituted aromatic or non-aromatic carbocyclic or heterocyclic ring system, with 1 to 80 C-atoms; and MG2 represents a group comprising at least two and up to four optionally-substituted aromatic or non-aromatic carbocyclic or heterocyclic ring systems, with 1 to 80 C-atoms, wherein, when MG2 represents a group comprising four optionally-substituted ring systems, at least three of the ring systems are aligned in between B1 and B2. The groups MG1, MG2 and MG3 in these new “staircase molecules” may be selected so that each one has one or more of the properties which are required in an LCP material prepared by polymerizing the compound.Type: GrantFiled: April 10, 2001Date of Patent: October 7, 2003Assignee: Rolic AGInventors: Zoubair Mohammed Cherkaoui, Carsten Benecke
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Patent number: 6607677Abstract: Optically active butane-1,2,3,4-tetraol derivatives of formula (I). The compounds may be used as doping agents for liquid crystals for a wide range of applications, such as solid state cholesteric filters for projection displays, circular polarizers, and optical filters.Type: GrantFiled: December 11, 2000Date of Patent: August 19, 2003Assignee: Rolic AGInventors: Richard Buchecker, Zoubair Mohammed Cherkaoui, Klaus Schmitt
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Patent number: 6534135Abstract: The invention relates to a process of preparing a discotic liquid crystalline compound by intramolecular oxidative cyclisation of a diaryl compound in an organic solvent in the presence of a strong acid, characterized in that an oxidative agent comprising a chrom(VI)oxide derivative is used, to discotic liquid crystalline compounds obtainable from said process, to liquid crystalline media, (co)polymers or polymer networks with columnar phases comprising said discotic liquid crystalline compounds, and to the use of said discotic liquid crystalline compounds, liquid crystalline media or liquid crystalline (co)polymers with columnar phases for liquid crystal displays, optical elements like polarizers, compensators or colour filters, chemical sensors, charge transport materials, optical storage media, nonlinear optics, decorative pigments, adhesive or synthetic resins with anisotropic mechanical properties.Type: GrantFiled: September 14, 2000Date of Patent: March 18, 2003Assignee: Merck Patent GesellschaftInventor: Mohammed Cherkaoui
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Publication number: 20030028048Abstract: A compound is of formula (I), in which: A1 to A4, E1 and E2 each independently represent hydrogen or an optionally-substituted hydrocarbon group; B1 and B2 each independently represent a single bond, an oxygen atom or an optionally-substituted hydrocarbon group; MG1 and MG2 each independently represent an optionally-substituted ring system; CG is a divalent or polyvalent chiral group. The optically active compound may be used as a doping agent for liquid crystals for a wide range of applications including solid state cholesteric filters for projection displays, circular polarisers, optical filters, etc.Type: ApplicationFiled: June 20, 2002Publication date: February 6, 2003Inventors: Zoubair Mohammed Cherkaoui, Klaus Schmitt