Patents by Inventor David Pires
David Pires 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).
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Publication number: 20240125993Abstract: SUMMARY The present invention relates to a method for manufacturing a spatially limited film stack comprising an optically anisotropic film on an optical sensor device with a light sensor element, such that the film stack covers the light sensor element but not the entire surface area of the optical sensor device. An electronic device manufactured according to the method of the invention can be used for analyzing the polarization state of light.Type: ApplicationFiled: January 26, 2022Publication date: April 18, 2024Applicant: ROLIC TECHNOLOGIES AGInventors: David PIRES, Richard FRANTZ
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Patent number: 11921303Abstract: Optical elements with anisotropic, patterned surface relief microstructures in which information is encoded in the distribution of the orientation of different zones. From the analysis of the distribution of the light scattered from the element, the orientation distribution in the element and therefore the encoded information can be evaluated. The elements are particularly useful for securing documents and articles against counterfeiting and falsification.Type: GrantFiled: February 23, 2021Date of Patent: March 5, 2024Assignee: ROLIC TECHNOLOGIES AGInventors: David Pires, Mohammed Ibn-Elhaj
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Publication number: 20220163853Abstract: The present invention relates to material compositions and methods for generating photo-alignable positive c-plate retarders. Because a planar alignment direction can be induced in the surface of the above c-plate retarder by exposure to polarized light, a slave material can be aligned on the surface of the c-plate retarder with a defined azimuthal orientation direction, without the need of an additional orientation layer.Type: ApplicationFiled: July 20, 2020Publication date: May 26, 2022Applicant: ROLIC TECHNOLOGIES AGInventors: David PIRES, Richard FRANTZ
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Publication number: 20220145182Abstract: The present invention relates to a novel method for the preparation of photoaligning polymer materials comprising aryl acrylic acid ester groups, to photoalignment compositions obtained by this process, to the use of the composition as orienting layer for liquid crystals and to non-structured and structured optical elements, electro-optical elements, multi-layer systems or in nanoelectronics comprising the compositions.Type: ApplicationFiled: February 5, 2020Publication date: May 12, 2022Applicant: ROLIC TECHNOLOGIES AGInventors: David PIRES, Cédric KLEIN, Richard FRANTZ
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Patent number: 11048033Abstract: The invention relates to an optical security system comprising an optical element with a patterned anisotropic optical property, wherein information is encoded and encrypted in the pattern of the optical element. The system further comprises a patterned polarizer in which the pattern is such that the information stored in the optical element can be decrypted.Type: GrantFiled: May 17, 2016Date of Patent: June 29, 2021Assignee: ROLIC AGInventors: Hubert Seiberle, David Pires
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Publication number: 20210173130Abstract: Optical elements with anisotropic, patterned surface relief microstructures in which information is encoded in the distribution of the orientation of different zones. From the analysis of the distribution of the light scattered from the element, the orientation distribution in the element and therefore the encoded information can be evaluated. The elements are particularly useful for securing documents and articles against counterfeiting and falsification.Type: ApplicationFiled: February 23, 2021Publication date: June 10, 2021Applicant: ROLIC TECHNOLOGIES AGInventors: David PIRES, Mohammed IBN-ELHAJ
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Patent number: 10845520Abstract: The invention provides a method for generation of an orientation pattern in a photo-alignable material using parallax optic. The invention further provides optical devices comprising a parallax optical element and an element with patterned optical anisotropic properties. Such devices have angular dependent, optically anisotropic properties, which are useful for various applications.Type: GrantFiled: March 30, 2015Date of Patent: November 24, 2020Assignee: ROLIC AGInventors: Klaus Schmitt, Hubert Seiberle, David Pires
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Publication number: 20180231697Abstract: Optical elements with anisotropic, patterned surface relief microstructures in which information is encoded in the distribution of the orientation of different zones. From the analysis of the distribution of the light scattered from the element, the orientation distribution in the element and therefore the encoded information can be evaluated. The elements are particularly useful for securing documents and articles against counterfeiting and falsification.Type: ApplicationFiled: July 28, 2016Publication date: August 16, 2018Applicant: ROLIC Technologies AGInventors: David PIRES, Mohammed IBN-ELHAJ
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Publication number: 20180120491Abstract: The invention relates to an optical security system comprising an optical element with a patterned anisotropic optical property, wherein information is encoded and encrypted in the pattern of the optical element. The system further comprises a patterned polarizer in which the pattern is such that the information stored in the optical element can be decrypted.Type: ApplicationFiled: May 17, 2016Publication date: May 3, 2018Applicant: ROLIC AGInventors: Hubert SEIBERLE, David PIRES
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Patent number: 9739950Abstract: The present invention concerns a method for constructing a light coupling system wherein a grating is manufactured on the surface of a multimode waveguide and defines the entrance of the waveguide for an incident light beam, said grating comprising a repetition of patterns. The grating is defined by a set of parameters comprising: •grating period (P), separating two adjacent patterns, •grating depth (d) between the highest and the lowest point of the pattern, •incident angle mean value (?) of the incident light with respect to the waveguide. The method comprises a step of optimization of the set of parameters to obtain an optimized second set of parameters, in order to obtain a transmission efficiency (Ce) of the incident light into said waveguide for the first or the second diffractive order exceeding 35% for unpolarized light, or exceeding 50% for polarized light, at a given wavelength of the incident light.Type: GrantFiled: July 24, 2013Date of Patent: August 22, 2017Assignee: CSEM CENTRE SUISSE D'ELECTRONIQUE ET DE MICROTECHNIQUE SA-RECHERCHE ET DÉVELOPPEMENTInventors: Omar Sqalli, David Pires, Guillaume Basset, Martin Stalder
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Publication number: 20170139093Abstract: The invention provides a method for generation of an orientation pattern in a photo-alignable material using parallax optic. The invention further provides optical devices comprising a parallax optical element and an element with patterned optical anisotropic properties. Such devices have angular dependent, optically anisotropic properties, which are useful for various applications.Type: ApplicationFiled: March 30, 2015Publication date: May 18, 2017Applicant: ROLIC AGInventors: Klaus SCHMITT, Hubert SEIBERLE, David PIRES
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Publication number: 20150219842Abstract: The present invention concerns a method for constructing a light coupling system wherein a grating is manufactured on the surface of a multimode waveguide and defines the entrance of the waveguide for an incident light beam, said grating comprising a repetition of patterns. The grating is defined by a set of parameters comprising: •grating period (P), separating two adjacent patterns, •grating depth (d) between the highest and the lowest point of the pattern, •incident angle mean value (?) of the incident light with respect to the waveguide. The method comprises a step of optimization of the set of parameters to obtain an optimized second set of parameters, in order to obtain a transmission efficiency (Ce) of the incident light into said waveguide for the first or the second diffractive order exceeding 35% for unpolarized light, or exceeding 50% for polarized light, at a given wavelength of the incident light.Type: ApplicationFiled: July 24, 2013Publication date: August 6, 2015Applicant: CSEM Centre Suisee D'Electronique et de Microtechnique SA - Recherche et DevelopmentInventors: Omar Sqalli, David Pires, Guillaume Basset, Martin Stalder
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Patent number: 8670809Abstract: Adaptations and improvements to tubular metal powder filters include employing cross sectional geometries of any suitable shape, aligning the inner conductor off-axis, replacing the inner conductive wire with a conductive trace or a superconductive trace carried by a printed circuit board, combining multiple filters within a single common outer conductive housing, and employing meandering and other non-parallel signal paths. The various adaptations and improvements are designed to accommodate single-ended and differential signaling, as well as superconducting and non-superconducting applications.Type: GrantFiled: December 6, 2012Date of Patent: March 11, 2014Assignee: D-Wave Systems Inc.Inventors: Murray C. Thom, Sergey Uchaykin, Thomas Mahon, David Pires, Peter Spear, Jacob Craig Petroff
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Patent number: 8389205Abstract: The invention concerns a method for patterning a surface of a material. A substrate having a polymer film thereon is provided. The polymer is a selectively reactive polymer (e.g. thermodynamically unstable): it is able to unzip upon suitable stimulation. A probe is used to create patterns on the film. During the patterning, the film is locally stimulated for unzipping polymer chains. Hence, a basic idea is to provide a stimulus to the polymeric material, which in turn spontaneously decomposes e.g. into volatile constituents. For example, the film is thermally stimulated in order to break a single bond in a polymer chain, which is sufficient to trigger the decomposition of the entire polymer chain.Type: GrantFiled: June 11, 2009Date of Patent: March 5, 2013Assignee: International Business Machines CorporationInventors: Urs T. Duerig, Jane E. Frommer, Bernd W. Gotsmann, James L. Hedrick, Armin W. Knoll, Robert D. Miller, David Pires, Charles G. Wade
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Patent number: 8346325Abstract: Adaptations and improvements to tubular metal powder filters include employing non-circular cross sectional geometries, aligning the inner conductor off-axis, replacing the inner conductive wire with a conductive trace carried on a printed circuit board, combining multiple filters within a single common outer conductive housing, and employing meandering and other non-parallel signal paths. The various adaptations and improvements are designed to accommodate single-ended and differential signaling, as well as superconducting and non-superconducting applications.Type: GrantFiled: January 21, 2011Date of Patent: January 1, 2013Assignee: D-Wave Systems Inc.Inventors: Murray C. Thom, Sergey Uchaykin, Thomas Mahon, David Pires, Peter Spear, Jacob Craig Petroff
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Publication number: 20120088675Abstract: Adaptations and improvements to tubular metal powder filters include employing a polyester binder or a binder formed of vacuum grease, employing metal powders of multiple different chemical compositions and/or spanning multiple different ranges of grain-size, replacing the outer conductive housing and metal powder components with a single structure formed of sintered metal powder, and texturing (such as rifling, threading, sanding, or scratching) an inner surface of the outer conductive housing. The various adaptations and improvements are designed to accommodate single-ended and differential signaling, as well as superconducting and non-superconducting applications.Type: ApplicationFiled: October 5, 2011Publication date: April 12, 2012Inventors: David Pires, Sergey V. Uchaykin, Jacob Craig Petroff, Alexandr M. Tcaciuc
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Publication number: 20110183853Abstract: Adaptations and improvements to tubular metal powder filters include employing non-circular cross sectional geometries, aligning the inner conductor off-axis, replacing the inner conductive wire with a conductive trace carried on a printed circuit board, combining multiple filters within a single common outer conductive housing, and employing meandering and other non-parallel signal paths. The various adaptations and improvements are designed to accommodate single-ended and differential signaling, as well as superconducting and non-superconducting applications.Type: ApplicationFiled: January 21, 2011Publication date: July 28, 2011Inventors: Murray C. Thom, Sergey Uchaykin, Thomas Mahon, David Pires, Peter Spear, Jacob Craig Petroff
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Publication number: 20100316960Abstract: The invention concerns a method for patterning a surface of a material. A substrate having a polymer film thereon is provided. The polymer is a selectively reactive polymer (e.g. thermodynamically unstable): it is able to unzip upon suitable stimulation. A probe is used to create patterns on the film. During the patterning, the film is locally stimulated for unzipping polymer chains. Hence, a basic idea is to provide a stimulus to the polymeric material, which in turn spontaneously decomposes e.g. into volatile constituents. For example, the film is thermally stimulated in order to break a single bond in a polymer chain, which is sufficient to trigger the decomposition of the entire polymer chain.Type: ApplicationFiled: June 11, 2009Publication date: December 16, 2010Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: Urs T. Duerig, Jane E. Frommer, Bernd W. Gotsmann, James L. Hedrick, Armin W. Knoll, Robert D. Miller, David Pires, Charles G. Wade
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Publication number: 20070165004Abstract: A personal electronic device includes a programmable display and a programmable keypad, wherein at least one of the programmable display and the programmable keypad includes a capacitive touch sensor and an EL panel in a unitary structure. A conductive layer shields the capacitive touch sensor from the EL panel and can be a separate layer or be incorporated into either the capacitive sensor or the EL panel. The conductive layer includes antimony tin oxide (ATO), other conductive oxide, or a conductive polymer, such as Orgacon™ 3010.Type: ApplicationFiled: January 17, 2006Publication date: July 19, 2007Applicant: World Properties, Inc.Inventors: Mark Seelhammer, Alan Thomas, David Pires, Walter Paciorek
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Publication number: 20060056168Abstract: The unlit margin of a first EL lamp is covered by the lit edge of a second EL lamp to provide a substantially seamless lit area. The lamps are joined mechanically. The EL lamps are connected in parallel electrically by conductive tape overlying at least a portion of the bus bars of the lamps. A plurality of lamps can be joined together to provide an EL lamp substantially larger than obtainable by other means.Type: ApplicationFiled: September 15, 2004Publication date: March 16, 2006Applicant: World Properties, Inc.Inventors: Anne Cooper, David Pires