Patents by Inventor Christophe Bureau

Christophe Bureau 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).

  • Publication number: 20070288088
    Abstract: The present invention provides a drug eluting stent including a metallic stent framework, an electro-grafted primer coating disposed on the stent framework; and a biodegradable polymer coating hosting a drug disposed on the electro-grafted primer coating and a method of manufacturing said biodegradable drug eluting stent.
    Type: Application
    Filed: June 13, 2007
    Publication date: December 13, 2007
    Inventors: Christophe Bureau, Ferial Haroun, Elodie Henault
  • Publication number: 20070281148
    Abstract: The invention relates to a method for forming a polymer film on a surface that conducts or semiconducts electricity by means of electrografting. Said method uses an electrolytic solution containing a selected quantity of Brönsted acid. The invention also relates to the electrically conductive or semiconductive surfaces obtained by means of said method.
    Type: Application
    Filed: September 28, 2004
    Publication date: December 6, 2007
    Inventors: Christophe Bureau, Jose Gonzalez, Guy Deniau
  • Publication number: 20070209943
    Abstract: The invention relates to a method for grafting an organic film onto an electically conductive or semiconductive surface by electro-reduction of a solution, wherein the solution comprises one diazonium salt and one monomer bearing at least one chain polymerizable functional group. During the electrolyzing process, at least one protocole consisting of an electrical polarization of the surface by applying a variable potential over at least a range of values which are more cathodic that the reduction or peak potential of all diazonium salts in said solution is applied. The invention also relates to an electrically conducting or semiconducting surface obtained by implementing this method. The invention further relates to electrolytic compositions.
    Type: Application
    Filed: February 28, 2007
    Publication date: September 13, 2007
    Inventor: Christophe Bureau
  • Patent number: 7247226
    Abstract: The present invention concerns a lining support comprising a plurality of conductive pads (12) associated with a shared addressing contact (18) and means of selecting at least one pad to be lined by electrochemical means among the plurality of pads. In accordance with the invention, the selection means comprise means (20) of shifting a polarisation voltage, connected between the shared addressing contact and at least one pad to be addressed. Application to the lining of conductive pads.
    Type: Grant
    Filed: August 26, 2003
    Date of Patent: July 24, 2007
    Assignee: Alchimer S.A.
    Inventors: Christophe Bureau, François Perruchot, Christophe Kergueris
  • Patent number: 7196385
    Abstract: An electromechanical microstructure including a first mechanical part formed in a first electrically conductive material, and which includes a zone deformable in an elastic manner having a thickness value and an exposed surface, and a first organic film having a thickness, present on all of the exposed surface of the deformable zone. The thickness of the first film is such that the elastic response of the deformable zone equipped with the first film does not change by more than 5% compared to the response of the bare deformable zone, or the thickness of the first film is less than ten times the thickness of the deformable zone.
    Type: Grant
    Filed: August 25, 2003
    Date of Patent: March 27, 2007
    Assignees: Alchimer S.A., Tronic's Microsystems
    Inventors: Christophe Bureau, Christophe Kergueris, Francois Perruchot
  • Patent number: 7119030
    Abstract: The present invention relates to a method for cladding a simple or complex surface, electrically conducting or semiconducting, by means of an organic film from at least one precursor of said organic film, characterized in that the cladding of the surface by the organic film is carried out by electro-initiated grafting of said, at least one, precursor of said surface by applying at least one potential sweep on this surface carried out in such a way that at any point of said surface the maximum potential of each potential sweep, in absolute value and relative to a reference electrode, is greater than or equal to the value of the potential (vbloc) from which the curves of a graph expressing the quantity of electro-grafted precursor on a surface identical to said surface in function of the number of potential sweeps are all superposed and independent of this vbloc potential.
    Type: Grant
    Filed: August 25, 2003
    Date of Patent: October 10, 2006
    Assignee: Commissariat a l'Energie Atomique
    Inventors: Christophe Bureau, Guy Deniau, Serge Palacin
  • Publication number: 20060211236
    Abstract: The present invention relates to a process for coating a surface of a substrate with a seed film of a metallic material, the said surface being an electrically conductive or semiconductive surface and having recesses and/or projections. The process comprises the following: an organic film is placed on the said surface, the said film having a thickness such that the free face of this film conformally follows the recesses and/or projections of the said electrically conductive or semiconductive surface on which it is placed; a precursor of the metallic material is inserted within the said organic film placed on the said surface at the same time as, or after, the step consisting in placing the said organic film on the said surface; and the said precursor of the metallic material inserted within the said organic film is converted into the said metallic material. This process allows integrated circuits, interconnects in microelectronics and microsystems to be fabricated.
    Type: Application
    Filed: February 13, 2004
    Publication date: September 21, 2006
    Applicant: ALCHIMER S.A. 15, rue du Buisson aux Fraises- ZI
    Inventors: Christophe Bureau, Paul-Henri Haumesser, Sylvain Maitrejean, Thierry Mourier
  • Publication number: 20060141156
    Abstract: The invention relates to the deposition or attachment of materials to surfaces. It relates to a process for coating a surface with a first material and a second material, comprising the following steps: placing the first material on the said surface, inserting into the first material placed on the said surface precursor molecules of the second material, converting the said precursor molecules of the second material inserted into the first material into the said second material such that this second material becomes formed on the said surface to be coated and within the said first material placed on the said surface. The object of the process of the invention is to allow the deposition of materials of any type onto surfaces of any type.
    Type: Application
    Filed: February 13, 2004
    Publication date: June 29, 2006
    Applicant: Commissariat A L'Energie Atomique
    Inventors: Pascal Viel, Sami Ameur, Christophe Bureau
  • Publication number: 20060110929
    Abstract: The present invention relates to a method for cladding a simple or complex surface, electrically conducting or semiconducting, by means of an organic film from at least one precursor of said organic film, characterised in that the cladding of the surface by the organic film is carried out by electro-initiated grafting of said, at least one, precursor of said surface by applying at least one potential sweep on this surface carried out in such a way that at any point of said surface the maximum potential of each potential sweep, in absolute value and relative to a reference electrode, is greater than or equal to the value of the potential (vbloc) from which the curves of a graph expressing the quantity of electro-grafted precursor on a surface identical to said surface in function of the number of potential sweeps are all superposed and independent of this vbloc potential.
    Type: Application
    Filed: August 25, 2003
    Publication date: May 25, 2006
    Inventors: Christophe Bureau, Guy Deniau, Serge Palacin
  • Publication number: 20060103018
    Abstract: The present invention concerns a lining support comprising a plurality of conductive pads (12) associated with a shared addressing contact (18) and means of selecting at least one pad to be lined by electrochemical means among the plurality of pads. In accordance with the invention, the selection means comprise means (20) of shifting a polarisation voltage, connected between the shared addressing contact and at least one pad to be addressed. Application to the lining of conductive pads.
    Type: Application
    Filed: August 26, 2003
    Publication date: May 18, 2006
    Applicant: Alchimer S.A.
    Inventors: Christophe Bureau, Francois Perruchot, Christophe Kergueris
  • Publication number: 20050272143
    Abstract: The invention concerns a solid support comprising a functionalized electricity conductor or semiconductor surface coated with a functionalized electrografted organic layer wherein at least 90% of the number of functional groups of interest is accessible. The invention also concerns the method for preparing such a support and uses thereof, in particular as adhesive primer for fixing molecules of interest or objects bearing a complementary function (molecular adhesive).
    Type: Application
    Filed: June 16, 2003
    Publication date: December 8, 2005
    Inventors: Christophe Bureau, Brigitte Mouanda, Sami Ameur, Julienne Charlier, Serge Palacin
  • Publication number: 20050255631
    Abstract: The invention relates to a method of bonding a polymer surface to an electrically conductive or semiconductive surface, which method is characterized in that it comprises: a) the electrografting of an organic film onto the conductive or semiconductive surface; and then b) an operation of bonding the polymer surface to the conductive or semiconductive surface thus grafted. It also relates to applications of this method and to structures obtained by its implementation.
    Type: Application
    Filed: August 25, 2003
    Publication date: November 17, 2005
    Applicants: Commissariat a L'Energie Atomique, Alchimer S.A.
    Inventors: Christophe Bureau, Julienne Charlier
  • Publication number: 20050253206
    Abstract: An electromechanical microstructure including a first mechanical part formed in a first electrically conductive material, and which includes a zone deformable in an elastic manner having a thickness value and an exposed surface, and a first organic film having a thickness, present on all of the exposed surface of the deformable zone. The thickness of the first film is such that the elastic response of the deformable zone equipped with the first film does not change by more than 5% compared to the response of the bare deformable zone, or the thickness of the first film is less than ten times the thickness of the deformable zone.
    Type: Application
    Filed: August 25, 2003
    Publication date: November 17, 2005
    Applicants: Alchimer S.A., Tronic's Microsystems
    Inventors: Christophe Bureau, Christophe Kergueris, Francois Perruchot
  • Publication number: 20050170195
    Abstract: The invention relates to a method of fixing macro-objects to an electricity conducting- or semi-conducting surface by means of electrografting. The invention also relates to the electricity conducting- or semi-conducting-surfaces obtained using the aforementioned method and to the applications of same.
    Type: Application
    Filed: March 19, 2003
    Publication date: August 4, 2005
    Inventors: Christophe Bureau, Guy Deniau, Jose Gonzalez, Serge Palacin
  • Publication number: 20050106566
    Abstract: The present invention relates to a substrate coated with a transparent organic film, to a process for the manufacture of this substrate coated with the transparent organic film and to its use. The substrate coated with a film is characterized in that the film is an electrical insulator organic polymer which is transparent in at least one wavelength range and in that the said film is combined with a label which emits at least in the said wavelength range. It has an application in particular in a means for the detection of a chemical entity, for example a biochip, in a process for the quality control, a process for the certification or a process for the authentication of an object.
    Type: Application
    Filed: October 16, 2002
    Publication date: May 19, 2005
    Inventors: Francois Breniaux, Christophe Bureau, Patrick Chaton, Stephane Getin
  • Publication number: 20040248428
    Abstract: The present invention relates to a process for grafting and growing a conductive organic film on(to) an electrically conductive or semiconductive surface in which the grafting and growing of the film are performed simultaneously by electro-reduction of a diazonium salt that is a precursor of the said film on(to) the said surface cathodically polarized at a potential greater than or equal, in absolute value, to the electro-reduction potential of the diazonium salt relative to a reference electrode.
    Type: Application
    Filed: February 23, 2004
    Publication date: December 9, 2004
    Inventors: Christophe Bureau, Edouard Levy, Pascal Viel
  • Publication number: 20040081900
    Abstract: The invention concerns a mask-free localised grafting of organic molecules capable of being electrically activated, on a composite surface comprising conductive and/or semiconductive portions, by contacting said organic molecules with said composite surface, whereby the grafting is carried out electrochemically in one single step on specific selected zones of said conductive and/or semiconductive portions, said zones being brought to a potential not less than an electric potential threshold determined relative to a reference electrode, said electric potential threshold being the potential beyond which the grafting of said organic molecules occurs.
    Type: Application
    Filed: August 6, 2003
    Publication date: April 29, 2004
    Inventors: Christophe Bureau, Serge Palacin, Jean-Philippe Bourgoin, Sami Ameur, Julienne Charlier
  • Publication number: 20040082120
    Abstract: A process for mask-free localized grafting of organic molecules capable of being electrically activated, onto a composite surface comprising conductive and/or semiconductive portions, by placing said organic molecules in contact with said composite surface, in which said grafting is performed electrochemically in a single step on chosen, defined areas of said conductive and/or semiconductive portions, said areas being brought to a potential higher than or equal to a threshold electrical potential determined relative to a reference electrode, said threshold electrical potential being the potential above which grafting of said organic molecules takes place.
    Type: Application
    Filed: July 8, 2003
    Publication date: April 29, 2004
    Applicant: COMMISSARIAT A L'ENERGIE ATOMIQUE
    Inventors: Christophe Bureau, Serge Palacin, Jean-Philippe Bourgoin, Sami Ameur, Julienne Charlier
  • Publication number: 20030149122
    Abstract: The present invention relates to a complexing structure, to a method for treating liquid effluent using said complexing structure, and to a device for implementing the method of the invention. The structure comprises a film of a polymer or of an electrically neutral organic copolymer.
    Type: Application
    Filed: February 4, 2003
    Publication date: August 7, 2003
    Inventors: Christophe Bureau, Franck Lederf, Pascal Viel, Francis Descours
  • Patent number: 6517858
    Abstract: The invention relates to a bioactive implant comprising a substrate coated with a polymer layer with reactive functions, and a bioactive substance fixed on the implant by means of said reactive functions to enable progressive release on the implant site. Such implants are useful in the field of cardiology for example to prevent restenosis resulting from the fitting of stents in the coronary arteries.
    Type: Grant
    Filed: May 16, 2001
    Date of Patent: February 11, 2003
    Assignees: Commissariat a L'Energie Atomique, Institut National de la Sante et de la Recherche Medicale, Kerckhoff-Klinik GmbH
    Inventors: Alain Le Moel, Natacha Betz, Christophe Bureau, Guy Deniau, Charles Baquey, Gérard Deleris, Werner Haberbosch