Patents by Inventor Tarek Kassem

Tarek Kassem 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).

  • Polyphenolic bioprecursors
    Patent number: 9067908
    Abstract: Cosmetic and therapeutic, in particular dermatological bioprecursors have the formula [A]n-PP-[B]m wherein PP is a polyphenol radical in which each hydroxyl function is protected by a group A or a group B, A is a saturated or unsaturated, substituted or unsubstituted alkyl radical having 1 to 20 carbon atoms which is bonded to the polyphenol, n is an integer not less than 1, and B is a precursor of a biologically active molecule, which is also bonded to the polyphenol, and m is an integer also not less than 1.
    Type: Grant
    Filed: June 16, 2006
    Date of Patent: June 30, 2015
    Assignees: RHODIA CHIMIE, CHANEL PARFUMS BEAUTE
    Inventors: Sabine Delaire, Adrien Adao, Jean-Roger Desmurs, Mirjana Gelo-Pujic, Laurent Saint-Jalmes, Tarek Kassem
  • Poly (vinyl alcohol) polymers, uses and preparation thereof
    Patent number: 8198364
    Abstract: There are provided poly(vinyl alcohol) polymers and copolymers containing vinyl alcohol or vinyl acetate and derivatives thereof such as poly(ethylene glycol)-grafted poly(vinyl alcohol) polymers or polyether-grafted poly(vinyl alcohol) polymers. These polymers can contain various functional groups. Such polymers can be use as polymer matrix or solid support for various chemical substrates such as organic substrates and reagents. Cross-linked poly(vinyl alcohol) polymers and copolymers are also provided. Methods for preparing such polymers as well as several of their uses are also included.
    Type: Grant
    Filed: June 14, 2007
    Date of Patent: June 12, 2012
    Assignee: Valorisation-Recherche, Limited Partnership
    Inventors: Julian Xiao-Xia Zhu, Pardin Christophe, Juntao Luo, William A. Lubell, Tarek Kassem
  • Poly (Vinyl Alcohol) Polymers, Uses and Preparation Thereof
    Publication number: 20100038297
    Abstract: There are provided poly(vinyl alcohol) polymers and copolymers containing vinyl alcohol or vinyl acetate and derivatives thereof such as poly(ethylene glycol)-grafted poly(vinyl alcohol) polymers or polyether-grafted poly(vinyl alcohol) polymers. These polymers can contain various functional groups. Such polymers can be use as polymer matrix or solid support for various chemical substrates such as organic substrates and reagents. Cross-linked poly(vinyl alcohol) polymers and copolymers are also provided. Methods for preparing such polymers as well as several of their uses are also included.
    Type: Application
    Filed: June 14, 2007
    Publication date: February 18, 2010
    Inventors: Julian Xiao-Xia Zhu, Pardin Christophe, Juntao Luo, William A. Lubell, Tarek Kassem
  • Polyphenolic Bioprecursors
    Publication number: 20090215881
    Abstract: Cosmetic and therapeutic, in particular dermatological bioprecursors have the formula [A]n—PP—[B]m wherein PP is a polyphenol radical in which each hydroxyl function is protected by a group A or a group B, A is a saturated or unsaturated, substituted or unsubstituted alkyl radical having 1 to 20 carbon atoms which is bonded to the polyphenol, n is an integer not less than 1, and B is a precursor of a biologically active molecule, which is also bonded to the polyphenol, and m is an integer also not less than 1.
    Type: Application
    Filed: June 16, 2006
    Publication date: August 27, 2009
    Applicants: CHANEL PARFUMS BEAUTE
    Inventors: Sabine Delaire, Adrien Adao, Jean-Roger Desmurs, Mirjana Gelo-Pujic, Laurent Saint-Jalmes, Tarek Kassem