Patents Assigned to Ecole Polytechnique
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Patent number: 9603234Abstract: A device for magnetizing laser plasma by unit of a pulsed magnetic field, which includes: a laser source for emitting a laser pulse; a vacuum chamber in which a target capable of generating a laser plasma during an interaction of the laser pulse with the target is arranged; and a coil capable of generating a pulsed magnetic field in the laser plasma, the device being characterised in that the coil is arranged in a reentrant chamber containing a coolant.Type: GrantFiled: February 26, 2014Date of Patent: March 21, 2017Assignee: ECOLE POLYTECHNIQUEInventors: Julien Fuchs, Bruno Albertaz, Henri Pepin, Olivier Portugall, Jerôme Beard
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Patent number: 9603232Abstract: A plasma motor for extracting a positive ion flow has a single ionization stage and a device for supplying the ionization stage with an ionizable electronegative gas. The plasma motor further has a device for creating an electric field so as to produce the ionization of the gas in the ionization stage. The device for creating the electric filed includes a device for extracting a negative ion flow and, a device for extracting a positive ion flow, connected to the ionization stage. The extraction of a positive ion flow and the extraction of a negative ion flow are of the same amplitude, ensuring the electrical neutrality of the motor. The extraction of a positive ion flow and the extraction of a negative ion flow allow the neutrality of the motor to be ensured.Type: GrantFiled: December 6, 2006Date of Patent: March 21, 2017Assignees: ECOLE POLYTECHNIQUE, CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUEInventor: Pascal Chabert
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Patent number: 9602047Abstract: A device for self-tracking a light source, including a focusing optical device configured to focus incoming light to a focal spot, an adaptive device configured to reflect the light of the focal spot and arranged to provide for a phase change at an area of the focal spot of the incoming light to generate a reflected light, and a light guide located between the focusing optical device and the adaptive device, the light guide configured to capture the reflected light of the adaptive device.Type: GrantFiled: March 24, 2016Date of Patent: March 21, 2017Assignee: ECOLE POLYTECHNIQUE FEDERALE DE LAUSANNE (EPLF)Inventors: Volker Zagolla, Christophe Moser, Jacques-Edouard Moser
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Publication number: 20170070048Abstract: The invention provides a method for coping with an unintentional islanding of an electrical distribution grid within a Commelec-type framework for the real-time control of micro-grids, of Resource Agents (RA) controlled by Grid Agents (GA), comprising at least maintain at any time before the unintentional islanding occurs a rating of all resource agents controlled by a same grid agent in view of their ability to be a slack resource, by computing the rating based on a power availability and on a state-of-energy of each resource, the state-of-energy quantifying an amount of energy that may be withdrawn from a potential slack irrespectively of a PQ profile, whereby the PQ profile describes bounds for active and reactive power that a resource can inject or absorb; and a shedding list of all the resources that have to be shed if a current best candidate slack resource is selected, the current best candidate slack resource being the slack resource having the best rating of all resources as determined in the step ofType: ApplicationFiled: September 6, 2015Publication date: March 9, 2017Applicant: ECOLE POLYTECHNIQUE FEDERALE DE LAUSANNE (EPFL)Inventors: Mario PAOLONE, Jean-Yves LE BOUDEC, Andrey BERNSTEIN, Lorenzo Enrique REYES CHAMARRO
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Patent number: 9591168Abstract: The present invention relates to an apparatus for imaging a page of a book or other similar document comprising: a table defining a support plane, the book being disposed on the table such that the page to image is substantially parallel to the support plane and an other page of the book is orientated at an angle ? relative to the support plane, ? being between 0° and 70°; means for displacing the table parallel to the support plane along a longitudinal direction and a lateral direction and/or perpendicular to the support plane along a normal direction; a plurality of light sources, each light source producing an incident light and directing said incident light onto an inspection area of the page to image at a predetermined zenith angle ?i and at a predetermined azimuth angle ?i; means for sensing the light reflected by the page to image; at least one control unit adapted to control said displacing means, said light sources and said sensing means; wherein the light sources are fixedly connected to a maType: GrantFiled: July 17, 2015Date of Patent: March 7, 2017Assignee: Ecole Polytechnique Federale de Lausanne (EPFL)Inventors: Loic Arnaud Baboulaz, Martin Vetterli
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Patent number: 9576553Abstract: A method and apparatus for producing a reflective or refractive surface that reflects or refracts light shined thereon and reproduces on a screen a desired greyscale intensity image on which the reflective or refractive surface is based and a corresponding apparatus, wherein the method permits a reproduction of a reference grayscale image with adjustable precision.Type: GrantFiled: August 23, 2013Date of Patent: February 21, 2017Assignee: ECOLE POLYTECHNIQUE FEDERALE DE LAUSANNEInventors: Mark Pauly, Thomas Kiser
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Patent number: 9570288Abstract: The present invention relates to a method of producing a FinFET sensor device comprising the steps of: providing a silicon substrate; etching the silicon substrate to produce at least one upwardly extending Fin structure externally protruding from a surface of the silicon substrate; depositing a spacer layer on the at least one Fin structure; anisotropically etching a section of the spacer layer to expose the underlying silicon; isotropic etching of the exposed silicon surrounding the at least one Fin structure; and carrying out oxidation of the silicon surrounding the at least one Fin structure to produce a Fin structure of silicon inside the at least one Fin structure. The present invention also relates to FinFET sensor devices produced by the above method.Type: GrantFiled: March 19, 2014Date of Patent: February 14, 2017Assignee: ECOLE POLYTECHNIQUE FEDERALE DE LAUSANNE (EPFL)Inventors: Sara Rigante, Adrian Mihai Ionescu
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Publication number: 20170036785Abstract: A device for forming a quasi-neutral ion-electron beam, including: a chamber; a set of means for forming an ion-electron plasma in the chamber; and means for extracting and accelerating charged particles from the plasma out of the chamber. The particles are capable of forming the beam and the extraction and acceleration means that include a set of at least two grids located at one end of the chamber.Type: ApplicationFiled: April 14, 2015Publication date: February 9, 2017Applicants: ECOLE POLYTECHNIQUE, CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUEInventors: Dmytro Rafalskyi, Ane Aanesland
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Patent number: 9563044Abstract: The present invention relates to a reflective optical objective (1) comprising: —a first reflecting element (3) including a front surface (3a) and a hack surface (3b), the front surface (3a) including a convex reflecting surface (11); and —a second reflecting element (5) including a concave reflecting surface (13) facing the convex reflecting surface (11) of the first reflecting element (3), the second reflecting element (5) including a transmissive section (7) permitting electromagnetic radiation to pass through the concave reflecting surface (13) of the second reflecting element (5) to the first reflecting element (3). The reflective optical objective (1) is characterized in that the reflective optical objective (1) includes a carrier material (9) embedding at least the front surface (3a) of the first reflecting element (3) and defining the distance (d) between the first (3) and second (5) reflecting elements.Type: GrantFiled: July 15, 2013Date of Patent: February 7, 2017Assignee: ECOLE POLYTECHNIQUE FEDERALE DE LAUSANNEInventors: Davor Kosanic, Bastien Rachet, Victor Cadarso, Juergen Brugger
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Patent number: 9559321Abstract: The invention relates to electrochemical devices comprising complexes of cobalt comprising at least one ligand with a 5- or six membered, N-containing heteroring. The complex are useful as p- and n-dopants, as over of electrochemical devices, in particular in organic semiconductors. The complexes are further useful as over-discharge prevention and overvoltage protection agents.Type: GrantFiled: February 24, 2012Date of Patent: January 31, 2017Assignee: Ecole Polytechnique Federale de Lausanne (EPFL)Inventors: Julian Burschka, Florian Kessler, Etienne Baranoff, Mohammad Khaja Nazeeruddin, Michael Graetzel
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Patent number: 9549708Abstract: Described herein are microelectrode array devices, and methods of fabrication, assembly and use of the same, to provide highly localized neural recording and/or neural stimulation to a neurological target. The device includes multiple microelectrode elements arranged protruding shafts. The protruding shafts are enclosed within an elongated probe shaft, and can be expanded from their enclosure. The microelectrode elements, and elongated probe shafts, are dimensioned in order to target small volumes of neurons located within the nervous system, such as in the deep brain region. Beneficially, the probe can be used to quickly identify the location of a neurological target, and remain implanted for long-term monitoring and/or stimulation.Type: GrantFiled: March 31, 2011Date of Patent: January 24, 2017Assignee: ECOLE POLYTECHNIQUE FEDERALE DE LAUSANNEInventors: André Mercanzini, Philippe Renaud, Claudio Pollo
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Patent number: 9549328Abstract: A method to optimize the communication on a channel between an access point and at least one client device, said channel being characterized by a center frequency and a bandwidth, comprises: establishing a connection on a first channel according to a first center frequency and a first bandwidth; exchanging data through this first channel between the access point and the client device; monitoring a first interference level on the first channel; the access point, while the data are exchanged, executes: informing the client device to switch to a second channel having a different center frequency and/or a different bandwidth; determining a second interference level on the second channel; comparing the first interference level with the second interference level; deciding to switch back or keep the second channel based on the comparison.Type: GrantFiled: April 11, 2014Date of Patent: January 17, 2017Assignee: ECOLE POLYTECHNIQUE FEDERALE DE LAUSANNE (EPFL)Inventors: Julien Herzen, Ruben Merz, Patrick Thiran
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Publication number: 20170013193Abstract: A multi-camera hemispherical very wide field of view imaging apparatus with omnidirectional illumination capability comprises a cylindrical body (4, 4.a, 4.b), a hemispherical mechanical frame (2) arranged on one end of the cylindrical body (4, 4.a, 4.b), a plurality of imaging channels (3), each imaging channel (3) comprising at least an image sensor and related optics with a fixed focus appropriate for endoscopic imaging, the plurality of imaging channels (3) being distributed over the hemispherical mechanical frame (2), a light source arranged centre-down at a back part of the plurality of imaging channels (3) and inside or at the end of the cylindrical body (4, 4.a, 4.b). Each imaging channel (3) comprises a plurality of lightning channels (1) around their centre, each of the plurality of lightning channels (1) comprising at least one microfiber light guide having a determined angle of curvature arranged to transmit the light from the light source.Type: ApplicationFiled: February 24, 2015Publication date: January 12, 2017Applicant: Ecole Polytechnique Federale de Lausanne (EPFL)Inventors: Ömer Cogal, Yusuf Leblebici
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Patent number: 9540428Abstract: Heparin binding peptides derived from a Tenascin (TNC) III1-5 domain or a fibrinogen ?15-66 domain have been found that bind certain cytokines with high affinity. Materials and methods for making compositions and devices using these peptides are disclosed.Type: GrantFiled: July 2, 2013Date of Patent: January 10, 2017Assignee: Ecole Polytechnique Federale de Lausanne (EPFL)Inventors: Jeffrey A. Hubbell, Mikael Martino, Laura De Laporte, Jeffrey J. Rice, Federico Tortelli
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Patent number: 9536047Abstract: In this invention, we propose privacy-enhancing technologies for medical tests and personalized medicine methods, which utilize patients' genomic data. Assuming the whole genome sequencing is done by a certified institution, we propose to store patients' genomic data encrypted by a patient's public keys at a Storage and Processing Unit (SPU). A part of the corresponding private key is also stored on the SPU. At the time of the test by a Medical Unit (MU), the patient provides the second part of the private key to the MU. A test with its associated markers is determined by the MU and sent to the SPU. The test is carried out on the encrypted values thanks to homomorphic operation and returned back to the MU. The latter uses the second part of the private key to access the result.Type: GrantFiled: January 12, 2016Date of Patent: January 3, 2017Assignee: Ecole Polytechnique Federale de Lausanne (EPFL)Inventors: Erman Ayday, Jean-Pierre Hubaux, Jean L. Raisaro, Amalio Telenti, Jacques Fellay, Paul J. McLaren, Jacques Rougemont, Mathias Humbert
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Patent number: 9531914Abstract: We propose new methods for creating color varying prints with classical cyan, magenta, yellow inks on a metallic substrate. We use a special crossline halftone with optimized surface coverages of the inks to create color prints on a metallic surface whose colors change when rotating the print in-plane under specular reflection. These prints enable viewing on the same metallic print a first image with a first set of colors and upon in-plane rotation, the same image with parts colored with a different set of colors. They also enable viewing a first color image and upon rotation a second independent color image. Applications comprise counterfeit prevention, art, advertisement exhibitions and amusement parks.Type: GrantFiled: October 4, 2015Date of Patent: December 27, 2016Assignee: Ecole Polytechnique Fédérale de LausanneInventor: Roger D. Hersch
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Publication number: 20160367145Abstract: A functional optical coherent imaging (fOCI) platform includes at least one active camera unit (ACU) having a coherent and/or a partially coherent light source, and means for spectral filtering and imaging a selected body area of interest; an image processing unit (IPU) for pre-processing data received from an ACU; at least one stimulation unit (STU) transmitting a stimulation to a subject; at least one body function reference measurement unit (BFMU); a central clock and processing unit (CCU), with interconnections to the ACU, the IPU, the STU, for collecting pre-processed data from the IPU, stimuli from the STU body function reference data from the BFMU in a synchronized manner; a post-processing unit (statistical analysis unit, SAU); and an operator interface (HOD.Type: ApplicationFiled: June 29, 2015Publication date: December 22, 2016Applicant: ECOLE POLYTECHNIQUE FEDERALE DE LAUSANNE (EPFL)Inventors: Theo LASSER, Dimitri VAN DE VILLE, Erica MARTIN-WILLIAMS, Marcel LEUTENEGGER, Iwan MAERKI, Michael FRIEDRICH, Martin VILLIGER
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Patent number: 9524370Abstract: A privacy-preserving method for performing a disease susceptibility test on a patient, said method comprising: (I) performing homomorphic computations, (J) obtaining a test result which is partly decrypted with a first part (prk1 resp. prk2) of a private key, (L) decrypting said partly decrypted result with a second part (prk2 resp. prk1) of said private key, wherein said homomorphic computations are based on encrypted genomic markers of the patient, on encrypted clinical and/or environmental markers, and on encrypted ancestry markers of the patient. The invention is also related to a method for inferring ancestry in the encrypted domain.Type: GrantFiled: November 3, 2014Date of Patent: December 20, 2016Assignee: Ecole Polytechnique Federale de Lausanne (EPFL)Inventors: Jean L. Raisaro, Erman Ayday, Paul McLaren, Jean-Pierre Hubaux, Amalio Telenti
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Publication number: 20160364990Abstract: A navigation system including a vehicle dynamic model (VDM) that serves as the main process model within a navigation filter is described. When used in an unmanned aerial vehicle (UAV), the navigation system may work in communication with inertial measurement units (IMUs) and environment dependent sensors such as GNSS receivers. Particularly, the navigation system is beneficial in the case of GNSS signal reception outages, where conventional IMU coasting drifts quickly. Yet, the navigation system may also be employed in other scenarios, for example during GNSS presence for improved positioning, velocity and attitude determination, or in combination with GNSS when no IMU is available by design or due to a failure. In the navigation system, a solution to VDM equations provides an estimate of position, velocity, and attitude, which can be updated within a navigation filter based on available observations, such as IMU data or GNSS measurements.Type: ApplicationFiled: June 8, 2016Publication date: December 15, 2016Applicant: ECOLE POLYTECHNIQUE FEDERALE DE LAUSANNE (EPFL)Inventors: Mehran Khaghani, Jan Skaloud
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Patent number: 9518087Abstract: Peptides that specifically bind erythrocytes are described. These are provided as peptidic ligands having sequences that specifically bind, or as antibodies or fragments thereof that provide specific binding, to erythrocytes. The peptides may be prepared as molecular fusions with therapeutic agents, tolerizing antigens, or targeting peptides. Immunotolerance may be created by use of the fusions and choice of an antigen on a substance for which tolerance is desired. Fusions with targeting peptides direct the fusions to the target, for instance a tumor, where the erythrocyte-binding ligands reduce or entirely eliminate blood flow to the tumor by recruiting erythrocytes to the target.Type: GrantFiled: August 9, 2011Date of Patent: December 13, 2016Assignee: ECOLE POLYTECHNIQUE FEDERALE DE LAUSANNE (EPFL)Inventors: Jeffrey A. Hubbell, Stéphane Kontos, Karen Y. Dane