Patents by Inventor Stéphane Jacob

Stéphane Jacob 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).

  • Proton-conductive membranes and layers and methods for their production
    Patent number: 7470761
    Abstract: This invention relates to a silane-resin composition that can be obtained by at least partial hydrolytic condensation of at least the following components: (1) one or more sulfonic acid group-containing silane(s) with at least one group that can be cleaved under hydrolytic conditions, (2) one or more styryl-functionalized silane(s) and (3) one or more silane(s) that carry a nitrogen-containing heterocyclic compound, an amine group or a sulfonamide group with at least one group that can be cleaved under hydrolytic conditions, and mixing of the components before, during or after the hydrolytic condensation, as well as a process for the production of this composition. With the silane resin that is obtained, proton-conductive, organically cross-linked heteropolysiloxanes can be produced that are suitable for PEMFC in a layer or membrane form as proton-conductive systems. Their proton conductivity can be further increased by the addition of suitable liquids.
    Type: Grant
    Filed: August 23, 2005
    Date of Patent: December 30, 2008
    Assignee: Fraunhofer-Gesellschaft zur Forderung der Angewandten Forschung E.V.
    Inventors: Stéphane Jacob, Lothar Fröhlich, Konrad Olma, Michael Popall, Frank Kahlenberg
  • Silane-based resins that can be photochemically and/or thermally structured single-step method for their production, parent compounds and production methods that can be used for said resins
    Patent number: 7348393
    Abstract: A silane resin that can be structured photochemically and/or thermally is obtained by at least partial condensation of a mixture of a) at least one silane compound RaR2bSiX4-a-b wherein R is a group polymerizable photochemically and/or thermally via an organic rest by radical or cationic polymerization; R2 is a straight-chain, branched, or cyclic C1-C12 alkyl group; X is identical or different and is a leaving group; a is 1 or 2; b is 0 or 1; a+b is not more than 2; and b) at least one silanediol R12Si(OH)2 wherein R1 is identical or different and is a straight-chain, branched, or cyclic C1-C12 alkyl group or a group polymerizable photochemically and/or thermally via an organic rest by radical or cationic polymerization, provided the group does not contain aryl. The silane resins have dielectric properties useful in extremely high frequency applications.
    Type: Grant
    Filed: October 4, 2002
    Date of Patent: March 25, 2008
    Assignee: Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
    Inventors: Lothar Fröhlich, Stéphane Jacob, Michael Popall, Ruth Houbertz-Krauss
  • Method for preparing styryl-functionalized silanes
    Patent number: 6984747
    Abstract: The invention relates to a method for preparing silanes comprising styryl groups, said silanes being represented by the general formula (I): (St)bSiR?aR4?a?b with improved yields through a reaction with magnesium in a solvent mixture comprising from 30:70 to 70:30 (v/v) of diethyl ether and tetrahydrofuran.
    Type: Grant
    Filed: December 6, 2002
    Date of Patent: January 10, 2006
    Assignee: Fraunhofer-Gesellschaft zur Forderung der Angewandten Forschung e.V.
    Inventors: Stéphane Jacob, Lothar Fröhlich, Konrad Olma, Michael Popall, Frank Kahlenberg
  • Proton-conductive membranes and layers and methods for their production
    Patent number: 6949616
    Abstract: This invention relates to a silane-resin composition that can be obtained by at least partial hydrolytic condensation of at least the following components: (1) one or more sulfonic acid group-containing silane(s) with at least one group that can be cleaved under hydrolytic conditions, (2) one or more styryl-functionalized silane(s) and (3) one or more silane(s) that carry a nitrogen-containing heterocyclic compound, an amine group or a sulfonamide group with at least one group that can be cleaved under hydrolytic conditions, and mixing of the components before, during or after the hydrolytic condensation, as well as a process for the production of this composition. With the silane resin that is obtained, proton-conductive, organically cross-linked heteropolysiloxanes can be produced that are suitable for PEMFC in a layer or membrane form as proton-conductive systems. Their proton conductivity can be further increased by the addition of suitable liquids.
    Type: Grant
    Filed: December 20, 2002
    Date of Patent: September 27, 2005
    Inventors: Stéphane Jacob, Lothar Fröhlich, Konrad Olma, Michael Popall, Frank Kahlenberg