Patents by Inventor Bertrand Bloch

Bertrand Bloch 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).

  • Polymers from certain conjugated organic compounds
    Patent number: 6051669
    Abstract: The invention relates to conjugated compounds of general formula (I) ##STR1## wherein X.sub.1 and X.sub.2 are, independently of one another, electron-withdrawing or electron-donating systems, and to a process for the preparation of these compounds.The invention also relates to any material which includes the compounds of general formula I and to the use of said compounds or of any material which includes them in electronic, optoelectronic, nonlinear optical and electrooptical devices.
    Type: Grant
    Filed: July 27, 1998
    Date of Patent: April 18, 2000
    Assignee: Office National d'Estudes et de Recherches Aerospatiales (ONERA)
    Inventors: Andre-Jean Attias, Bertrand Bloch, Chantal Cavalli
  • Conjugated organic compounds and preparation process
    Patent number: 5872255
    Abstract: The invention relates to conjugated compounds of general formula (I) ##STR1## wherein X.sub.1 and X.sub.2 are, independently of one another, electron-withdrawing or electron-donating systems, and to a process for the preparation of these compounds.The invention also relates to any material which includes the compounds of general formula I and to the use of said compounds or of any material which includes them in electronic, optoelectronic, nonlinear optical and electrooptical devices.
    Type: Grant
    Filed: October 3, 1997
    Date of Patent: February 16, 1999
    Assignee: Office National D'Etudes et de Recherche Aerospatiales (ONERA)
    Inventors: Andre-Jean Attias, Bertrand Bloch, Chantal Cavalli
  • Silane-type coupling agent, process for its preparation, and its use for the production of a conducting coating on glass
    Patent number: 5352797
    Abstract: The coupling agent is comprised of a pyrrolidyl group capable of being incorporated in the chain of an electroconducting polymer, and a silane group --Si(OR.sup.1).sub.3 which may be chemically bound to a glass substrate in order to form an adherent coating of said polymer. It is obtained by an addition reaction implementing an epoxide function and a primary or secondary amine function.
    Type: Grant
    Filed: March 30, 1993
    Date of Patent: October 4, 1994
    Assignee: Office National d'Etudes et de Recherches Aerospatiales
    Inventors: Bertrand Bloch, Andre Attias, Jacques Ancelle, Claude Andrieux, Pierre Audebert
  • Process for the production of a ceramic fiber/matrix composite material
    Patent number: 5196235
    Abstract: The matrix is formed by particles of ceramic material which are introduced into the empty spaces of a fibrous structure and are bonded to one another by bridges of ceramic material obtained by in situ pyrolysis of a liquid polymer.By means of this process, a composite material of low porosity, despite a high reduction in volume during pyrolysis, is obtained relatively rapidly.
    Type: Grant
    Filed: December 19, 1990
    Date of Patent: March 23, 1993
    Assignee: Office National d'Etudes et de Recherches Aerospatiales
    Inventors: Michel Parlier, Erick Bouillon, Claude Muller, Bertrand Bloch, Patrick Noireaux, Jean Jamet
  • Thermoset polymers and prepolymers with rapid curing, obtained by polycondensation of pyridine derivatives and aromatic dialdehydes and adding of phenolic compounds
    Patent number: 4642264
    Abstract: The object of the present invention are new thermoset resins having quickened curing, a process for their preparation, and their applications. The resins according to the invention consist, at least in part, of the products resulting from the polycondensation of one or more pyridine derivatives containing at least two methyl groups in the 2, 4 or 6 positions, with one or more aromatic dialdehydes, and the addition of one or more additives consisting of phenol compounds. These resins are used to the fabrication of composite materials.
    Type: Grant
    Filed: August 23, 1984
    Date of Patent: February 10, 1987
    Assignees: Societe Nationale des Poudres et Explosifs, Office National d'Etudes et de Recherches Aerospatiales
    Inventors: Marcel Ropars, Bertrand Bloch
  • Thermoset polymers and prepolymers obtained by polycondensation of alkyl pyridine with hydroxyl aromatic monoaldehydes
    Patent number: 4525573
    Abstract: The object of the invention are new thermoset polymers and prepolymers, a process for their preparation, and their uses. The new thermoset prepolymers consist, at least in part, of the polycondensation products of one or more pyridine derivatives containing at least two activated methyl groups with one or more aromatic monoaldehydes containing at least one hydroxyl group. These prepolymers are used to prepare composite materials, in particular laminates, that can be used at high temperatures.
    Type: Grant
    Filed: August 24, 1984
    Date of Patent: June 25, 1985
    Assignees: Societe Nationale des Poudres et Explosifs, Office National d'Etudes et de Recherches Aerospatiales
    Inventors: Marcel Ropars, Bertrand Bloch
  • Process for making an acrylic monomer
    Patent number: 4323695
    Abstract: The invention relates to a novel process for making phenyl fluoroacrylate monomer. The monomer is obtained by reaction of a fluoroacrylic salt with an halogenating agent, followed by condensation of the fluoroacryloyl halogenide with phenol and recovery of the phenyl fluoroacrylate. The obtained monomer is applicable to the manufacture of transparent polymers of high thermal stability.
    Type: Grant
    Filed: December 11, 1979
    Date of Patent: April 6, 1982
    Assignee: Office National d'Etudes et de Recherches
    Inventors: Bertrand Bloch, Chantal C. Meyer, Denis Charrier
  • Novel acrylic polymers and method of making same
    Patent number: 4297466
    Abstract: The invention relates to poly(phenyl fluoracrylate) a novel polymer.The polymer is useful for the manufacture of transparent materials with very high heat stability.
    Type: Grant
    Filed: December 11, 1979
    Date of Patent: October 27, 1981
    Assignee: Office National d'Etudes et de Recherches Aerospatiales
    Inventors: Bertrand Bloch, Chantal Cavalli born Meyer, Denis Charrier
  • Silane-type coupling agent, process for its preparation, and its use for the production of a conducting coating on glass
    Patent number: RE35802
    Abstract: The coupling agent is comprised of a pyrrolidyl group capable of being incorporated in the chain of an electroconducting polymer, and a silane group --Si(OR.sup.1).sub.3 which may be chemically bound to a glass substrate in order to form an adherent coating of said polymer. It is obtained by an addition reaction implementing an epoxide function and a primary or secondary amine function.
    Type: Grant
    Filed: October 4, 1996
    Date of Patent: May 19, 1998
    Assignee: Office National d'Etudes et de Recherches Aerospatiales
    Inventors: Bertrand Bloch, Andre Attias, Jacques Ancelle, Claude Andrieux, Pierre Audebert