Patents Assigned to École Polytechnique
  • Publication number: 20100244699
    Abstract: An inductive plasma applicator comprises a ferromagnetic inductively coupled source and an electrode with a hole pattern centred with respect to the plasma source. Such plasma applicator provides an efficient energy transfer to the plasma. The plasma applicator is preferably manufactured using a technology for producing electrical circuits. The electrode and a coil of the ferromagnetic inductively coupled plasma source are metal track portions formed on an insulating substrate. For example, the plasma applicator is manufactured using printed circuit board technology.
    Type: Application
    Filed: March 27, 2009
    Publication date: September 30, 2010
    Applicants: Centre National De La Recherche Scientifique - CNRS -, Ecole Polytechnique
    Inventor: Sebastien Dine
  • Publication number: 20100239466
    Abstract: The invention relates to a gas processing unit adapted for generating a surface plasma in the vicinity of a photocatalyst, that has a planar configuration. The photocatalyst is deposited in the form of a thin layer on a dielectric substrate and at least one plasma supply electrode is formed above the photocatalyst thin layer. Such a configuration increases the interaction between the plasma and the photocatalyst. The unit can be used for a gas processing of the pollution-control, odour reduction or bactericidal treatment type with a high efficiency.
    Type: Application
    Filed: January 6, 2010
    Publication date: September 23, 2010
    Applicants: Ecole Polytechnique, Centre National De La Recherche Scientifique -CRNS-
    Inventors: Antoine Rousseau, Katia Allegraud, Olivier Guaitella
  • Patent number: 7799524
    Abstract: The invention relates to compounds of formula 1 wherein R1-R2 is a guanine derivative; X is oxygen or sulfur; R3 is a heteroaromatic, unsaturated heterocyclyl or an alkynyl group with the double or triple bond connected to CH2; R4 is a linker; and L is a label, a plurality of same or different labels, a bond connecting R4 to R1 forming a cyclic substrate, or a further group —R3—CH2—X—R1-R2. The invention relates also to methods of manufacture of such novel AGT substrates, to intermediates useful in the synthesis of such AGT substrates, and to a method of transferring a label from such AGT substrates to O6-alkylguanine-DNA alkyltransferase (AGT) fusion proteins comprising proteins of interest.
    Type: Grant
    Filed: October 1, 2003
    Date of Patent: September 21, 2010
    Assignee: Ecole Polytechnique Ferdeale de Lausanne
    Inventors: Maik Kindermann, Kai Johnsson, Christoph Bieri
  • Patent number: 7789829
    Abstract: The sensor system comprises an implantable sensor and a user device associated with it. A sensitive liquid is enclosed in the sensor, into which glucose can penetrate. The viscosity of the mixture of sensitive liquid and glucose is measured. The user device, which controls the measurement and its evaluation, is a portable device worn externally on the skin. The viscosity is measured based on the rotation of a measuring element driven by a driving magnet, both disposed in the sensor. The rotation of the measuring element is analyzed based on its decay behavior following switch-off of the driving magnet. In a second embodiment, the viscosity is measured based on the oscillatory behavior of an oscillating element excited to oscillate by a magnet, both disposed in the sensor. The oscillatory behavior is analyzed based on the decay behavior of the oscillating element following switch-off of the magnet.
    Type: Grant
    Filed: October 22, 2003
    Date of Patent: September 7, 2010
    Assignee: Ecole Polytechnique Federale de Lausanne
    Inventors: Sigfrid Strässler, Peter Ryser, Klaus Ganz, Jacques Jacot
  • Patent number: 7782914
    Abstract: A device for generating a high-energy particle pulse is provided which comprises a laser system producing laser pulses with pulse length shorter than 100 fs (femtoseconds), and capable to be focused to peak intensities greater than 10A18 W/cmA2, preferred greater than 10A20 W/cmA2 (watts per centimeter squared), a device for shaping the temporal intensity profile accompanying said at least one laser pulse for increasing the laser contrast above 10^5, preferably above IL 0A7, especially 1OA10, and a target capable of releasing a high-energy particle pulse, particularly an electron or a proton pulse, upon irradiation with at least one of said laser pulses. A. corresponding method using the device is also described.
    Type: Grant
    Filed: July 13, 2005
    Date of Patent: August 24, 2010
    Assignees: Centre National De La Recherche Scientifique (CNRS), Ecole Nationale Superieure De Techniques Avancees, Ecole Polytechnique
    Inventors: Jérôme Faure, Jean Philippe Rousseau, Victor Malka, Jean-Paul Chambaret, Frédéric Burgy
  • Patent number: 7777880
    Abstract: Method and a polarimetric measurement device of a planar object carrying patterns repeated regularly and forming the lines of a grid. A first measurement is carried out at zero order, under an angle of incidence ?1 and for a first azimuthal angle ?1, a second measurement at least is carried out at zero order, under an angle of incidence ?2 and for a second azimuthal angle ?2, the polarization of the incident beam is modulated and the polarization of the reflected beam is analyzed for each measurement, theoretical polarimetric data is calculated for a model object of the real object, the model object including parameters adjustable using a formalism of electromagnetism. An iterative comparison of the measurements is conducted with the theoretical polarimetric data for different values of the adjustable parameters.
    Type: Grant
    Filed: December 22, 2005
    Date of Patent: August 17, 2010
    Assignees: Ecole Polytechnique, Centre National de la Recherche Scientifique - CNRS
    Inventors: Antonello De Martino, Bernard Drevillon
  • Patent number: 7765690
    Abstract: The invention relates to a method for producing electronic components consisting in carrying out a first anodization of a carrier material (1) for forming at least one first pore (3) extending in a first direction in said carrier material (1) and in carrying out a second anodization for forming at least one second pore (17) extending in the carrier material (1) in a second direction different from the first direction.
    Type: Grant
    Filed: March 21, 2005
    Date of Patent: August 3, 2010
    Assignee: Ecole Polytechnique DGAR
    Inventors: Travis Wade, Jean-Eric Wegrowe
  • Patent number: 7759635
    Abstract: Apparatus for forming a single or a plurality of threedimensional optical traps, the apparatus comprising: a. A collimated light source that is directed onto an array of focalizing refractive or diffractive elements providing a single or a plurality of focal areas, and b. An array of reflective elements, placed opposite to the said focalizing elements described in a), which reflect back the light into the said focal area. The invention also relates to a method for using this apparatus.
    Type: Grant
    Filed: October 7, 2006
    Date of Patent: July 20, 2010
    Assignee: Ecole Polytechnique Federale de Lausanne (EPFL)
    Inventors: Gerben Boer, Fabrice Merenda, Guy Delacretaz, René Salathe
  • Patent number: 7751608
    Abstract: The present invention relies on a band moiré image layout model capable of predicting the band moiré image layer layout produced when superposing a base band grating layer of a given layout and revealing line grating layer of a given layout. The base band grating layer, the revealing line grating layer and the resulting band moiré image layout may have a rectilinear or a curvilinear layout. Thanks to the band moiré image layout model, one can choose the layout of two layers selected from the set of base band grating layer, revealing line grating layer and band moiré image layer and obtain the layout of the third layer by computation, i.e. automatically. The presented methods may be used for creating an individualized protection for various categories of documents (banknotes, identity documents, checks, diploma, travel documents, tickets) and valuable products (optical disks, medical drugs, products with affixed labels, watches).
    Type: Grant
    Filed: June 30, 2004
    Date of Patent: July 6, 2010
    Assignee: Ecole Polytechnique Federale de Lausanne (EPFL)
    Inventors: Roger D. Hersch, Sylvain Chosson
  • Patent number: 7742592
    Abstract: Acoustic echo control and noise suppression is an important part of any “handsfree” telecommunication system, such as telephony or audio or video conferencing systems. Bandwidth and computational complexity constraints have prevented that stereo or multi-channel telecommunication systems have been widely applied. The advantages are very low complexity, high robustness, scalability to multi-channel audio without a need for loudspeaker signal distortion, and efficient integration of echo and noise control in the same algorithm.
    Type: Grant
    Filed: April 19, 2006
    Date of Patent: June 22, 2010
    Assignee: (EPFL) Ecole Polytechnique Federale de Lausanne
    Inventor: Christof Faller
  • Patent number: 7730766
    Abstract: A gas viscosity sensor comprises a signal processing circuit and a sensor element, including a gas pressure generating system and a differential pressure measuring system in fluid communication therewith, the differential pressure measuring system comprising a measuring chamber (14) bounded by a thin membrane (28), an inlet-outlet channel or orifice interconnecting the measuring chamber to a source of gas for which the viscosity is to be determined, the inlet-outlet channel or orifice having dimensions adapted to provide resistance to the outflow and inflow of gas in the measuring chamber, and a membrane displacement sensor (32) adapted to measure a time dependent displacement of the membrane due to pressure variations in the measuring cavity.
    Type: Grant
    Filed: March 30, 2006
    Date of Patent: June 8, 2010
    Assignee: Ecole Polytechnique Federale de Lausanne
    Inventors: Peter Ryser, Sigfrid Straessler
  • Publication number: 20100133636
    Abstract: A semiconductor device includes a semiconductor substrate, a photon avalanche detector in the semiconductor substrate. The photon avalanche detector includes an anode of a first conductivity type and a cathode of a second conductivity type. A guard ring is in the semiconductor substrate and at least partially surrounds the photon avalanche detector. A passivation layer of the first conductivity type is in contact with the guard ring to reduce an electric field at an edge of the photon avalanche detector.
    Type: Application
    Filed: December 3, 2008
    Publication date: June 3, 2010
    Applicants: STMicroelectronics (Research & Development) Limited, The University Court of The University of Edinburgh, Ecole Polytechnique Federale de Lausanne
    Inventors: Justin Richardson, Lindsay Grant, Marek Gersbach, Edoardo Charbon, Christiano Niclass, Robert Henderson
  • Patent number: 7729043
    Abstract: Optical parametric oscillator including a semiconductor microcavity being configured to spatially localize polaritons of at least three quantized polariton energy levels to effect an optical parametric oscillation.
    Type: Grant
    Filed: January 30, 2007
    Date of Patent: June 1, 2010
    Assignee: École Polytechnique Fédérale de Lausanne
    Inventors: Ounsi El Daif, Augustin Baas, Benoît Deveaud-Plédran, François Morier-Genoud
  • Patent number: 7727540
    Abstract: Endosseous implant to be applied to a human or animal bone, wherein the surface of the implant is made from titanium or a titanium alloy, said implant having a smooth or rough surface texture, which is characterized in that said surface has been treated with at least one selected organic phosphonate compound or a pharmaceutically acceptable salt or ester or an amide thereof; process for producing said implants.
    Type: Grant
    Filed: November 19, 2001
    Date of Patent: June 1, 2010
    Assignees: Universite de Geneve, Ecole Polytechnique Federale de Lausanne
    Inventors: Pierre Descouts, Björn-Owe Aronsson, Michael Grätzel, Carine Viornery, Peter Péchy
  • Patent number: 7713779
    Abstract: The invention concerns a photoactive nanocomposite (3) comprising at least one donor-acceptor couple of semiconductor elements. One of the elements is made of doped nanowires (7) with sp3 structure, and the other of the elements is an organic compound (8). The elements are supported by a device substrate (1). The invention also concerns a production method. According to a first embodiment, after their growth, the nanowires (7) are retrieved, functionalised and solubilised in the organic component (8). The mixture is deposited by coating on a device substrate. According to a second embodiment, the nanowires (7) are formed on a growth substrate (5) which is also the device substrate. The organic component (8) is combined with the nanowires (7) so as to form an active layer (3). Such a photoactive nanocomposite (3) allows production of a photovoltaic cell.
    Type: Grant
    Filed: July 21, 2005
    Date of Patent: May 11, 2010
    Assignees: Commissariat a l'Energie Atomique, Ecole Polytechnique, Centre National de la Recherche Scientifique
    Inventors: Muriel Firon, Bernard Drevillon, Anna Fontcuberta I Morral, Serge Palacin, Pere Roca i Cabarrocas
  • Patent number: 7710551
    Abstract: A band moiré image layout model enables predicting the band moiré image layer layout produced when superposing a base band grating and revealing line grating of given rectilinear or curvilinear layouts. Thanks to the band moiré image layout model, one can choose the layout of two layers selected from the set of base band grating, revealing line grating and band moiré image and obtain the layout of the third layer by computation, i.e. automatically. A composed layer made of a base band grating and of a revealing line grating separated by a small gap yields thanks to the parallax effect, when tilting the composed layer, dynamically moving moiré shapes. The presented methods can be used for protecting various categories of documents (banknotes, identity documents, checks, diploma, travel documents, tickets) and valuable products (optical disks, medical drugs, products with affixed labels, watches).
    Type: Grant
    Filed: February 9, 2006
    Date of Patent: May 4, 2010
    Assignee: Ecole Polytechnique Federale de Lausanne (EPFL)
    Inventors: Roger D. Hersch, Sylvain Chosson
  • Publication number: 20100075458
    Abstract: A method is described of forming a film of an amorphous material on a substrate (14) by deposition from a plasma. The substrate (14) is placed in an enclosure, a film precursor gas is introduced into the enclosure through pipes (20), and unreacted and dissociated gas is extracted from the enclosure through pipes (22) so as to provide a low pressure therein. Microwave energy—is introduced into the gas within the enclosure as a sequence of pulses at a given frequency and power level to produce a plasma therein by distributed electron cyclotron resonance (DECR) and cause material to be deposited from the plasma on the substrate. The frequency and/or power level of the pulses is altered during the course of deposition of material, so as to cause the bandgap to vary over the thickness of the deposited material.
    Type: Application
    Filed: October 26, 2007
    Publication date: March 25, 2010
    Applicants: Dow Corning Corporation, Ecole Polytechnique
    Inventors: Pere Roca I Cabarrocas, Pavel Bulkin, Dmitri Daineka, Patrick Leempoel, Pierre Descamps, Thibault Kervyn De Meerendre
  • Patent number: 7685587
    Abstract: Commercial data processors are available that include a capability of extending their instruction set for a specified application, i.e. of introducing customized functional units in the interest of enhanced processing performance. For such processors there is a need for automatically forming the extensions from high-level application code. A technique is described for selecting maximal-speedup convex subgraphs of the application dataflow graph under micro-architectural constraints.
    Type: Grant
    Filed: November 19, 2003
    Date of Patent: March 23, 2010
    Assignee: Ecole Polytechnique Federal de Lausanne
    Inventors: Laura Pozzi, Kubilay Atasu, Paolo Ienne Lopez
  • Patent number: 7683308
    Abstract: A method for controlling the spectral response of light sensitive semiconductor elements in an array (8) using an electric control signal (Vop) applied to said semiconductor elements. The light sensitive semiconductor elements could be a single photon avalanche diode (81) operating in Geiger mode. An image sensor has at least one light sensitive semiconductor elements and a circuit for applying a control voltage (Vop) to said semiconductor element so as to change its spectral response. Without being limiting, the sensor could be part of a digital camera, video camera, 3D image sensors, scanner, video telephone, autofocus system, medical image acquisition system, etc.
    Type: Grant
    Filed: December 1, 2005
    Date of Patent: March 23, 2010
    Assignee: Ecole Polytechnique Federale de Lausanne EFPL
    Inventors: Edoardo Charbon, Cristiano Niclass
  • Patent number: 7666612
    Abstract: A method for labeling acyl carrier protein (ACP) fusion proteins with a wide variety of different labels is disclosed. The method relies on the transfer of a label from a coenzyme A type substrate to an ACP fusion protein using a holo-acyl carrier protein synthase (ACPS) or a homologue thereof. The method allows detecting and manipulating the fusion protein, both in vitro and in vivo, by attaching molecules to the fusion proteins that introduce a new physical or chemical property to the fusion protein. Examples of such labels are, among others, spectroscopic probes or reporter molecules, affinity tags, molecules generating reactive radicals, cross-linkers, ligands mediating protein-protein interactions or molecules suitable for the immobilization of the fusion protein.
    Type: Grant
    Filed: May 19, 2004
    Date of Patent: February 23, 2010
    Assignee: EPFL-Ecole Polytechnique Federale De Lausanne
    Inventors: Kai Johnsson, Nathalie George