Molecular Aligning Or Molecular Orientating (e.g., Poling, Etc.) Patents (Class 264/435)
  • Patent number: 10391690
    Abstract: The present disclosure provides an injection molding apparatus, including a fixed mold component, a movable mold component, a first positive electrode module, and a first negative electrode module. The fixed mold component has an injection port and a transmission runner, to receive injection-molding melt. The movable mold component has a molding groove communicated with the transmission runner. The first positive electrode module and the first negative electrode module are disposed on a first side and a second side of the molding groove respectively, where the first side and the second side are opposite to each other. The first positive electrode module cooperates with the first negative electrode module to form an electric field between the first side and the second side of the molding groove, to perform electric field excitation on the injection-molding melt flowing into the molding groove.
    Type: Grant
    Filed: April 30, 2015
    Date of Patent: August 27, 2019
    Assignee: Huawei Technologies Co., Ltd.
    Inventor: Guo Yang
  • Patent number: 9923136
    Abstract: A high temperature piezoelectric sensor device such as a high temperature accelerometer, force sensor, pressure sensor, temperature sensor, acoustic sensor and/or acoustic transducer for use at temperatures up to 1000° C. The high temperature device includes a base, a piezoelectric element attached to the base and a pair of electrodes in electrical communication with the piezoelectric element. The piezoelectric element can have a d15 piezoelectric coefficient between 16.0-18.0 pC/N for all temperatures between 25 to 700° C., and a rotated d33 piezoelectric coefficient of 8.0-9.5 pC/N with zero face shear/thickness shear piezoelectric coefficients d34. d35 and d36 in the same temperature range. The piezoelectric element can also have an electromechanical coupling factor k15 variation of less than 7%, and d15 and rotated d33 piezoelectric coefficient variations of less than 5% for temperatures between 25 to 700° C.
    Type: Grant
    Filed: May 4, 2015
    Date of Patent: March 20, 2018
    Assignee: The Penn State Research Foundation
    Inventors: Shujun Zhang, Thomas R. Shrout, Chuanying Shen
  • Patent number: 9901881
    Abstract: Described herein is a method for altering the characteristics of a membrane comprising a dielectric material. The method comprises heating the membrane and applying an electric field in a direction out of the plane of the membrane to at least a portion of the dielectric material. At least a portion of the dielectric material becomes aligned with the applied electric field. In some embodiments, the membrane is piezoelectric and application of an electric signal to the membrane causes out of plane movement of the membrane. Also disclosed are membranes and systems and apparatuses comprising such membranes.
    Type: Grant
    Filed: November 25, 2010
    Date of Patent: February 27, 2018
    Assignee: CMS INNOVATIONS PTY LTD
    Inventors: Hans Gerard Leonard Coster, Tahereh Darestani Farahani, Terry Calvin Chilcott
  • Patent number: 9694196
    Abstract: An apparatus and method are utilized to transiently implement diamagnetic behavior in both permanently and transiently magnetized particles.
    Type: Grant
    Filed: February 18, 2014
    Date of Patent: July 4, 2017
    Assignee: WEINBERG MEDICAL PHYSICS INC
    Inventors: Irving N. Weinberg, Aleksandar Nelson Nacev, Pavel Stepanov
  • Patent number: 8937426
    Abstract: A manufacturing method of polarizing polyvinylidene fluoride (PVDF) piezoelectric film without metalized electrode includes providing a polyvinylidene fluoride (PVDF) piezoelectric film that is stretched into ? phase; providing two glass substrates having an indium tin oxide (ITO) layer respectively, wherein the PVDF piezoelectric film is located between the two glass substrates, and the two ITO layers are coated located separately on top of and below the PVDF piezoelectric film; and imposing a DC electric field onto two ITO layers, wherein the DC electric field of polarization is 400 to 900 kV/cm approximately.
    Type: Grant
    Filed: April 27, 2012
    Date of Patent: January 20, 2015
    Assignee: Chung-Yuan Christian University
    Inventors: Yung Ting, Sheuan-Perng Lin, Hariyanto Gunawan
  • Patent number: 8901716
    Abstract: An embodiment of the present invention is a technique to provide a dielectric film material with controllable coefficient of thermal expansion (CTE). A first compound containing a first liquid crystalline component is formed. The first compound is cast into a first film. The first film is oriented in an magnetic or electromagnetic field in a first direction. The first film is cured at a first temperature.
    Type: Grant
    Filed: May 5, 2010
    Date of Patent: December 2, 2014
    Assignee: Intel Corporation
    Inventor: James C. Matayabas, Jr.
  • Patent number: 8894906
    Abstract: Medical devices and related methods are disclosed.
    Type: Grant
    Filed: May 25, 2010
    Date of Patent: November 25, 2014
    Assignee: Boston Scientific Scimed, Inc.
    Inventors: Michael S. Arney, Scott R. Schewe
  • Patent number: 8877085
    Abstract: A piezoelectric and/or pyroelectric composite solid hybrid material, includes: a solid dielectric matrix, a filler of at least one inorganic piezoelectric and/or pyroelectric material, wherein the filler includes filiform nanoparticles distributed throughout the volume of the solid dielectric matrix with an amount by volume of less than 50%, and in that the main directions of elongation of the filiform nanoparticles of the inorganic filler distributed in the dielectric matrix have a substantially isotropic distribution in the solid dielectric matrix.
    Type: Grant
    Filed: December 3, 2010
    Date of Patent: November 4, 2014
    Assignee: Universite Paul Sabatier Toulouse III
    Inventors: Jean-Fabien Capsal, Charlotte David, Eric Dantras, Colette Lacabanne
  • Publication number: 20140145562
    Abstract: A piezoelectric polymer element such as a fibre or film is described, having a solid cross-section and a substantially homogeneous composition. A method of forming such a piezoelectric polymer element is also described. The method has the steps of extruding a polymer material and concurrently poling a region of the extruded material. Apparatus for forming such a piezoelectric polymer element is also described that comprises an extruder for extruding a polymer element from a granular feed and a pair of electrodes for applying an electric field across a region of the element concurrently with its extrusion. Also described is a piezoelectric construct having such piezoelectric polymer elements interposed between two conductive layers. A system for converting mechanical energy into electrical energy is described in which each of the piezoelectric construct's two conductive layers is connected to a respective terminal of a rectifying circuit.
    Type: Application
    Filed: September 15, 2011
    Publication date: May 29, 2014
    Applicant: UNIVERSITY OF BOLTON
    Inventors: Elias Siores, Magundappa L. (Ravi) Hadimani
  • Patent number: 8702885
    Abstract: A method of manufacturing ceramics includes: placing, on a base material, a first slurry in which a metal oxide powder is dispersed; applying a magnetic field to the first slurry to solidify the first slurry, thereby forming an under coat layer made of a first compact; placing, on the under coat layer, a second slurry containing a metal oxide powder constituting the ceramics; applying a magnetic field to the second slurry to solidify the second slurry, thereby forming a second compact to obtain a laminated body of the second compact and the under coat layer; and obtaining the ceramics made of the second compact by removing the under coat layer from the laminated body of the second compact and the under coat layer and then sintering the second compact, or sintering the laminated body of the second compact and the under coat layer and then removing the under coat layer.
    Type: Grant
    Filed: April 15, 2011
    Date of Patent: April 22, 2014
    Assignees: Canon Kabushiki Kaisha, University of Yamanashi
    Inventors: Takanori Matsuda, Tatsuo Furuta, Takayuki Watanabe, Jumpei Hayashi, Nobuhiro Kumada
  • Patent number: 8491965
    Abstract: A method of orienting microphase-separated domains is disclosed, comprising applying a composition comprising an orientation control component, and a block copolymer assembly component comprising a block copolymer having at least two microphase-separated domains in which the orientation control component is substantially immiscible with the block copolymer assembly component upon forming a film; and forming a compositionally vertically segregated film on the surface of the substrate from the composition. The orientation control component and block copolymer segregate during film forming to form the compositionally vertically-segregated film on the surface of a substrate, where the orientation control component is enriched adjacent to the surface of the compositionally segregated film adjacent to the surface of the substrate, and the block copolymer assembly is enriched at an air-surface interface.
    Type: Grant
    Filed: April 1, 2008
    Date of Patent: July 23, 2013
    Assignee: International Business Machines Corporation
    Inventors: Joy Cheng, Ho-Cheol Kim, Daniel P. Sanders, Linda Sundberg
  • Patent number: 8427810
    Abstract: The present invention relates to a capacitor film comprising a biaxially oriented polypropylene wherein a) said polypropylene has a draw ratio in machine direction of at least 4.0 and a draw ratio in transverse direction of at least 4.0, and b) said polypropylene has an electrical breakdown strength EB63% according to IEC 60243-part 1 (1988) of at least 300 kV/mm at a draw ratio in machine direction and in transverse direction of 4.0.
    Type: Grant
    Filed: May 7, 2008
    Date of Patent: April 23, 2013
    Assignee: Borealis Technology Oy
    Inventors: Manfred Stadlbauer, Eberhard Ernst, Lauri Huhtanen, Yvo Daniels, Franck Jacobs
  • Publication number: 20130040152
    Abstract: The present invention refers to polymeric materials having hybrid characteristics, which are composed of a dispersion of organometallic monomers or oligomers of Si, Ti, Zr, Hf, Ge, V or Sn or mixture thereof, in a polymeric matrix. The articles prepared with these polymeric materials are characterized by the migration of said compounds to their surface, conferring improved soldability and surface properties.
    Type: Application
    Filed: August 7, 2010
    Publication date: February 14, 2013
    Applicant: BRASKEM S.A.
    Inventor: Edwin Moncada Acevedo
  • Patent number: 8356393
    Abstract: A method for producing a polymer piezoelectric film, comprising: a process of moving and stretching a crystalline polar polymer sheet in contact with a conductive stretching roller having a diameter of at least 30 mm and a surface friction coefficient which has been reduced to such a level as to allow a relative displacement of the crystalline polar polymer sheet in contact with the conductive stretching roller: and a step in the process of applying a polarization voltage between an electrode disposed opposite to the crystalline polar polymer sheet and the conductive stretching roller to polarize the crystalline polar polymer sheet. As a result, it is possible to stably produce a polymer piezoelectric film exhibiting stable piezoelectricity over a large area. Especially, it is possible to obtain polymer piezoelectric film exhibiting a temperature-dispersion peak temperature of d31 piezoelectricity coefficient at least 120° C. and surface scratches extending in one direction.
    Type: Grant
    Filed: January 8, 2008
    Date of Patent: January 22, 2013
    Assignee: Kureha Corporation
    Inventors: Nobuhiro Moriyama, Ken'ichi Nakamura, Kazuyuki Suzuki, Keitarou Suzuki
  • Patent number: 8153702
    Abstract: The present invention relates to a method of producing an electret material, to a new class of electret materials and to a device comprising such electret materials.
    Type: Grant
    Filed: September 14, 2009
    Date of Patent: April 10, 2012
    Assignee: Sony Corporation
    Inventors: Nikolaus Knorr, Silvia Rosselli, Tzenka Miteva, Gabriele Nelles
  • Patent number: 8142708
    Abstract: Laminar flow of a carrier liquid and polymeric molecules through micro-channels is used to straighten the polymeric molecules and attach the straightened molecules to a wall of the micro-channel for subsequent treatment and analysis. Micro-channels can be manufactured using an elastic molding material. One micro-channel embodiment provides fluid flow using a standard laboratory centrifuge.
    Type: Grant
    Filed: October 18, 2002
    Date of Patent: March 27, 2012
    Assignee: Wisconsin Alumni Research Foundation
    Inventors: David C. Schwartz, Eileen T. Dimalanta, Juan J. de Pablo
  • Patent number: 8101099
    Abstract: A voltage is applied on an interdigitated electrode provided on one main face of a single-domain ferroelectric single crystal substrate to form a periodic domain inversion structure, the interdigitated electrode is removed and the one main face of the substrate is machined to remove the surface region of the substrate to form a machined surface. The optical waveguide is then formed in the substrate.
    Type: Grant
    Filed: May 1, 2009
    Date of Patent: January 24, 2012
    Assignee: NGK Insulators, Ltd.
    Inventor: Takashi Yoshino
  • Patent number: 8092777
    Abstract: A process for producing an anisotropic magnetic material includes: preparing a feebly magnetic material capable of transforming into a magnetic material by a prescribed reaction, orienting the feebly magnetic material by imparting an external field to the feebly magnetic material, and transforming the oriented feebly magnetic material to a magnetic substance by the prescribed reaction.
    Type: Grant
    Filed: February 4, 2009
    Date of Patent: January 10, 2012
    Assignees: Toyota Jidosha Kabushiki Kaisha, National Institute for Materials Science
    Inventors: Naoki Nakamura, Tetsuo Uchikoshi, Yoshio Sakka
  • Patent number: 7931831
    Abstract: A voltage is applied on an interdigitated electrode provided on one main face of a single-domain ferroelectric single crystal substrate to form a periodic domain inversion structure. The interdigitated electrode is then removed. The optical waveguide is then formed in the substrate. An optical intensity center P1 of the optical waveguide is kept away from a location P0 of the end of the interdigitated electrode.
    Type: Grant
    Filed: May 1, 2009
    Date of Patent: April 26, 2011
    Assignee: NGK Insulators, Ltd.
    Inventor: Takashi Yoshino
  • Patent number: 7862765
    Abstract: Provided are an apparatus and method for synthesizing a conductive composite with enhanced electrical conductivity. The apparatus includes: an injection-molding machine which injection-molds pellets created by mixing carbon nanotubes (CNTs) with polymers; and an electric field generator which applies an electric field to the pellets that are melted while the melted pellets are injection-molded and thus rearranges the CNTs included in a composite into which the melted pellets are injection-molded.
    Type: Grant
    Filed: November 20, 2008
    Date of Patent: January 4, 2011
    Assignee: Semes Co., Ltd.
    Inventors: Ho-Soo Hwang, Jung-Keun Cho
  • Patent number: 7854878
    Abstract: A method including providing Au-doped Co nanoparticles. The nanoparticles include a combination of non-ferromagnetic nanoparticles and weakly ferromagnetic nanoparticles. The nanoparticles each have an exterior surface. The surfaces of the nanoparticles are functionalized with 7-(5-uracil-ylcarbamoyl)heptanoic acid. A polymer is provided having a general formula including a uracil group. A dispersion is formed by agitating a solution of the nanoparticles. The solution is spin cast into a film. The film is heated under vacuum at a first temperature, TFM, resulting in inducing ferromagnetism in the non-ferromagnetic nanoparticles and converting the non-ferromagnetic nanoparticles to ferromagnetic nanoparticles, and resulting in enhancing ferromagnetism in the weakly ferromagnetic nanoparticles. The nanoparticles are aligned such that magnetic easy axes of the nanoparticles are oriented by applying a magnetic field to the dispersion while at a second temperature less than TFM.
    Type: Grant
    Filed: January 23, 2007
    Date of Patent: December 21, 2010
    Assignee: International Business Machines Corporation
    Inventors: James Lupton Hedrick, Delia Jane Milliron, Alshakim Nelson, Russell Clayton Pratt
  • Patent number: 7799260
    Abstract: A method of poling a ferroelectric sample suitable for use in a fuel injector of an internal combustion engine, the method comprising providing a ferroelectric sample having a stack of ferroelectric layers, wherein adjacent layers are separated by internal electrodes, forming a first group and a second group of electrodes; applying a multiaxial pressure to the ferroelectric sample; and generating an electric field between the first and second group of electrodes to pole the ferroelectric sample. The multiaxial pressure is ideally applied by means of a fluid, and the fluid may be an dielectric fluid or fuel.
    Type: Grant
    Filed: September 14, 2006
    Date of Patent: September 21, 2010
    Assignee: Delphi Technologies Holding S.arl
    Inventors: Christopher A. Goat, Michael P. Cooke
  • Patent number: 7771647
    Abstract: A method and apparatus for providing electric microcontact printing is provided. A stamp is brought into contact with the surface of a substrate to provide high resolution features. Aspects of the invention may be used for data storage, microcontact printing, and for other applications requiring high resolution pattern transfer.
    Type: Grant
    Filed: December 11, 2002
    Date of Patent: August 10, 2010
    Assignee: President and Fellows of Harvard College
    Inventors: Heiko O. Jacobs, George M. Whitesides
  • Patent number: 7763319
    Abstract: A method of orienting microphase-separated domains is disclosed, comprising applying a composition comprising an orientation control component, and a block copolymer assembly component comprising a block copolymer having at least two microphase-separated domains in which the orientation control component is substantially immiscible with the block copolymer assembly component upon forming a film; and forming a compositionally vertically segregated film on the surface of the substrate from the composition. The orientation control component and block copolymer segregate during film forming to form the compositionally vertically-segregated film on the surface of a substrate, where the orientation control component is enriched adjacent to the surface of the compositionally segregated film adjacent to the surface of the substrate, and the block copolymer assembly is enriched at an air-surface interface.
    Type: Grant
    Filed: January 11, 2008
    Date of Patent: July 27, 2010
    Assignee: International Business Machines Corporation
    Inventors: Joy Cheng, Ho-Cheol Kim, Daniel P. Sanders, Linda Sundberg
  • Patent number: 7744802
    Abstract: An embodiment of the present invention is a technique to provide a dielectric film material with a controllable coefficient of thermal expansion (CTE). A first compound containing a first liquid crystalline component is formed. The first compound is cast into a first film. The first film is oriented in an magnetic or electromagnetic field in a first direction. The first film is cured at a first temperature.
    Type: Grant
    Filed: June 25, 2004
    Date of Patent: June 29, 2010
    Assignee: Intel Corporation
    Inventor: James C. Matayabas, Jr.
  • Publication number: 20100123274
    Abstract: Provided are an apparatus and method for synthesizing a conductive composite with enhanced electrical conductivity. The apparatus includes: an injection-molding machine which injection-molds pellets created by mixing carbon nanotubes (CNTs) with polymers; and an electric field generator which applies an electric field to the pellets that are melted while the melted pellets are injection-molded and thus rearranges the CNTs included in a composite into which the melted pellets are injection-molded.
    Type: Application
    Filed: November 20, 2008
    Publication date: May 20, 2010
    Inventors: Ho-Soo Hwang, Jung-Keun Cho
  • Publication number: 20100096781
    Abstract: The invention provides a method of manufacturing a polymeric implantable medical device using gel extrusion of high molecular weight polymers or charge-induced orientation to avoid heat degradation of the polymer that might occur during conventional heat extrusion.
    Type: Application
    Filed: September 14, 2009
    Publication date: April 22, 2010
    Applicant: Abbott Cardiovascular Systems Inc.
    Inventors: Bin Huang, David C. Gale
  • Publication number: 20090269584
    Abstract: A thermoelectric material and a method of forming a thermoelectric material are provided. The method of forming a thermoelectric material includes providing at least one compound fabricated by a first technique and having a first power factor and a first thermal conductivity. The method further includes modifying a spatial structure of the at least one compound by a second technique different from the first technique. The modified at least one compound has a plurality of portions separated from one another by a plurality of boundaries. The plurality of portions include one or more portions having a second power factor not less than the first power factor, and the modified at least one compound has a second thermal conductivity less than the first thermal conductivity.
    Type: Application
    Filed: April 24, 2009
    Publication date: October 29, 2009
    Applicant: BSST, LLC
    Inventors: Lon E. Bell, Dmitri Kossakovski
  • Publication number: 20090231678
    Abstract: In various embodiments, chromophores are described that include novel election acceptors, novel electron donors, and/or novel conjugated bridges that are useful in nonlinear optical applications. In some embodiments, the present invention provides chromophore architectures wherein a chromophore contains more than one electron acceptor in electronic communication with a single election donor, and/or more than one electron donor in electronic communication with a single electron acceptor. Also described is processes for providing materials comprising the novel chromophores and polymer matrices containing the novel chromophores. Electro-optic devices described herein contain one or more of the described electron acceptors, electron donors, conjugated bridges, or chromophores.
    Type: Application
    Filed: April 25, 2008
    Publication date: September 17, 2009
    Applicant: LUMERA CORPORATION
    Inventors: Diyun Huang, Tim Londergan, Galina K. Todorova, Jingsong Zhu
  • Publication number: 20090184445
    Abstract: A method. The method includes providing Au-doped Co nanoparticles. The nanoparticles include a combination of non-ferromagnetic nanoparticles and weakly ferromagnetic nanoparticles. The nanoparticles each have an exterior surface. The surfaces of the nanoparticles are functionalized with 7-(5-uracil-ylcarbamoyl)heptanoic acid. A polymer is provided having a general formula including a uracil group. A dispersion is formed by agitating a solution of the nanoparticles. The solution is spin cast into a film. The film is heated under vacuum at a first temperature, TFM, resulting in inducing ferromagnetism in the non-ferromagnetic nanoparticles and converting the non-ferromagnetic nanoparticles to ferromagnetic nanoparticles, and resulting in enhancing ferromagnetism in the weakly ferromagnetic nanoparticles. The nanoparticles are aligned such that magnetic easy axes of the nanoparticles are oriented by applying a magnetic field to the dispersion while at a second temperature less than TFM.
    Type: Application
    Filed: January 23, 2007
    Publication date: July 23, 2009
    Inventors: James Lupton Hedrick, Delia Jane Milliron, Alshakim Nelson, Russell Clayton Pratt
  • Publication number: 20090152772
    Abstract: In a preparation method, a chiral or cholesteric liquid crystal, a photoreactive monomer, and a photoinitiator are disposed in a liquid crystal cell. A principal surface of the liquid crystal cell is illuminated with ultraviolet light selected to have a non-uniform ultraviolet light intensity profile in the liquid crystal cell. The illuminating cooperates with the photoinitiator to polymerize at least a portion of the photoreactive monomer near the principal surface to generate a polymer network having a density corresponding to the non-uniform ultraviolet light intensity profile. The polymer network biases the liquid crystal toward a selected helical alignment direction. In some embodiments, the illuminating includes illuminating with first and second ultraviolet light intensity profiles to produce surface and volume polymer network components.
    Type: Application
    Filed: February 25, 2009
    Publication date: June 18, 2009
    Inventors: Lachezar Komitov, Liang-Chy Chien, Sang Hwa Kim
  • Patent number: 7540991
    Abstract: The present invention provides an electrolyte membrane formed of an ion conductive composition. Said composition contains a liquid crystalline polymer having an ionic dissociative group. Molecular chains of the liquid crystalline polymer are orientated in a specific direction. The degree of orientation ? of the liquid crystalline polymer is in a range of 0.45 or more and less than 1, as defined by equation (1) as follows, Degree of orientation ?=(180???)/180??(1), wherein ?? is a full width at half maximum of a peak in an X-ray diffraction intensity distribution pattern obtained by measuring an intensity distribution from 0 to 360 degrees in the azimuthal angle direction, at a peak scattering angle, in an X-ray diffraction image of the electrolyte membrane. Ionic conductivity in a thickness direction of the membrane is higher than the ionic conductivity in a direction parallel to a surface of the membrane.
    Type: Grant
    Filed: July 1, 2005
    Date of Patent: June 2, 2009
    Assignee: Polymatech Co., Ltd.
    Inventors: Naoyuki Shimoyama, Fumio Saitoh, Toru Kimura, Masayuki Tobita
  • Publication number: 20090080062
    Abstract: A method for preparing a poled structure by using double-sided electrodes to perform a poling process first provides a ferroelectric substrate with a first polarization direction having a top surface and a bottom surface. Fabrication processes are then performed to form an electrode structure including a first electrode and a second electrode on the top surface and a third electrode in a portion of the bottom surface between the first electrode and the second electrode. Subsequently, a poling process is performed on the electrode structure to form a plurality of inverted domains having a second polarization direction in the ferroelectric substrate, and the second polarization direction is substantially opposite to the first polarization direction.
    Type: Application
    Filed: September 26, 2007
    Publication date: March 26, 2009
    Applicant: HC PHOTONICS CORP.
    Inventors: Shang Ling Liu, Tso Lun Wu, Tze Chia Lin, Ming Hsien Chou
  • Patent number: 7452492
    Abstract: A method of fabricating a magnetic coder device, the method being of the type consisting in making a mixture of ferromagnetic particles or ferrites in a matrix, in molding the matrix, and in subjecting the molded matrix to a magnetic field so as to obtain a continuous alternation of north and south magnetic poles, which method consists in using a matrix having viscosity that is sufficiently low to enable the ferrites to migrate, in applying a magnetic field during the molding operation while maintaining the matrix at a given temperature in order to reduce its viscosity and thereby making it easier to cause the ferromagnetic particles to migrate and become oriented in their direction of easy magnetization, and to obtain discontinuous shapes having high particle concentration, and in suddenly cooling the matrix while the magnetic field is maintained so as to freeze the particles in the matrix.
    Type: Grant
    Filed: June 8, 2004
    Date of Patent: November 18, 2008
    Assignee: Hutchinson
    Inventors: Pascal Sautier, Gilles Argy
  • Publication number: 20080248356
    Abstract: The performance of an electrolyte membrane (21) is improved by imparting aeolotropy to physical properties of the electrolyte membrane (21). A first state solid polymer electrolyte membrane (21) containing a polymer having an ion-exchange group is softened, melted of dissolved, whereby a second state solid polymer electrolyte membrane (21) is formed. Then, the second state solid polymer electrolyte membrane (21) is cooled, while a strong magnetic field is applied to the second state solid polymer electrolyte membrane (21) in a predetermined direction, whereby the second state solid polymer electrolyte membrane (21) is hardened or solidified. As a result, the ion-conductivity in a membrane thickness direction can be improved in a fluorinated electrolyte membrane, and swelling in the membrane surface direction can be suppressed in an aromatic hydrocarbon electrolyte membrane.
    Type: Application
    Filed: July 14, 2005
    Publication date: October 9, 2008
    Applicant: Toyota Jidosha Kabushiki Kaisha
    Inventors: Hiroko Kimura, Shinobu Sekine
  • Publication number: 20080203619
    Abstract: The invention reports a new film of the beta phase of polyvinylidene fluoride (PVDF) and its processing for the elimination of porosity, using a compression force along the thickness direction of the sample at a high temperature. The join action of the compression force and the temperature eliminates the porosity of the PVDF beta phase, improving its mechanical (Young's modulus, yielding and breaking stress, yielding and breaking strain), electrical (dielectric constant, electric rupture) and electromechanical properties (electromechanical coupling, piezoelectric coefficients) and, therefore, the use of the material in technological applications.
    Type: Application
    Filed: July 19, 2006
    Publication date: August 28, 2008
    Applicant: Universidade Do Minho
    Inventors: Senentxu Lanceros-Mendez, Vitor Joao Gomes Da Silva, Rinaldo Gregorio Filho
  • Publication number: 20080176965
    Abstract: The proton conducting capability of a proton exchange membrane is improved where the polymeric membrane material has a continuous non-ionic phase which provides the molecular backbone of the membrane and ionic phase clusters which provide the basis for proton exchange when the membrane is infiltrated with water or the like. In the formation of the membrane, the polymeric material is placed in a state in which the polymer chain segments are mobile and the ionic phase portions are aligned by application of an alternating electric field applied transverse or normal to the surfaces of the membrane. The aligned ionic phase increases the conductivity of the membrane in the direction through its thickness.
    Type: Application
    Filed: January 23, 2007
    Publication date: July 24, 2008
    Applicant: GM Global Technology Operations, Inc.
    Inventors: Yue Qi, Tao Xie, Timothy J. Fuller
  • Publication number: 20080114294
    Abstract: Medical balloons are energetically treated to form regions that facilitate deflation to a desirable configuration.
    Type: Application
    Filed: November 14, 2006
    Publication date: May 15, 2008
    Inventors: Thomas J. Holman, Afsar Ali
  • Patent number: 6995213
    Abstract: Disclosed is a method of producing a novel biaxially oriented film having a high diffraction of light, and flexibility. In particular, the invention disclosed provides a method for making an opaque impact copolymer film by stretching in two dimensions an impact polypropylene copolymer. The invention is disclosed to be useful for making a material particularly suitable for a variety of applications including labeling media, food packaging and laminates. Also disclosed is a multilayer film having a first impact polypropylene copolymer layer and a second layer of another polymer wherein the multilayer film has significantly reduced haze. Also disclosed is film produced with a filler that has increased porosity and flexibility.
    Type: Grant
    Filed: September 29, 2003
    Date of Patent: February 7, 2006
    Assignee: Fina Technology, Inc.
    Inventors: Mark B. Miller, Scott Cooper, Juan Jose Aguirre, Mark Leland
  • Patent number: 6991759
    Abstract: The present invention provides a process for preparation of semi-conducting polymer film containing beta crystalline phase of polyvinylidene fluoride which have a large number of application in piezoelectric devices viz. electromechanical sensors, tactile sensors for robotics, touch sensitive switches etc, which can be made at low temperatures and at low electric fields and having low resistivity/semi-conducting range.
    Type: Grant
    Filed: December 10, 2003
    Date of Patent: January 31, 2006
    Inventor: Radhakrishnan Subramaniam
  • Patent number: 6936195
    Abstract: Disclosed is a method of manufacturing optical information storage media and multi-layered optical information storage media. Paired information storage structures have characteristic wavelength and polarization states, and from which recorded information can be read by a laser beam having similar wavelength and polarization-state characteristics.
    Type: Grant
    Filed: December 18, 2002
    Date of Patent: August 30, 2005
    Assignee: InventQjaya Sdn. Bhd.
    Inventors: Bunsen Fan, Sadeg M. Faris
  • Patent number: 6887923
    Abstract: The present invention disclose a method for the orientation of a high density polyethylene (“HDPE”) film. The process of the invention comprises forming a HDPE-wax mixture by adding to a HDPE batch a normally solid hydrocarbon wax. The HDPE-wax mixture is subsequently stretched into a film at an orientation temperature below the film's melt temperature. The hydrocarbon wax is characterized by having a drop point equal to or lower than the melting point of the HDPE film. The present invention also provides a film made by the process of the invention and a master batch thereof.
    Type: Grant
    Filed: December 11, 2002
    Date of Patent: May 3, 2005
    Assignee: Equistar Chemicals, L.P.
    Inventors: Robert J. Bowling, D. Ryan Breese
  • Patent number: 6843941
    Abstract: A film made of a vinylidene-trifluoroethylene or tetrafluoroethylene copolymer is uniaxially drawn to fabricate a uniaxially drawn film. Then, the uniaxially drawn film is thermally treated at a temperature within a temperature range of the Curie temperature through the melting point of the vinylidene-trifluoroethylene or tetrafluoroethylene copolymer for five hours or over, to diffuse the molecular chains of the uniaxially drawn film along the orientation direction and thus, to remove the intertwining between the molecular chains.
    Type: Grant
    Filed: April 29, 2002
    Date of Patent: January 18, 2005
    Inventor: Hiroji Ohigashi
  • Patent number: 6821474
    Abstract: The invention allows the fabrication of small, dense beads of dielectric materials with selected compositions, which are incorporated into a polymeric matrix for use in capacitors, filters, and the like. A porous, generally spherical bead of hydrous metal oxide containing titanium or zirconium is made by a sol-gel process to form a substantially rigid bead having a generally fine crystallite size and correspondingly finely distributed internal porosity. The resulting gel bead may be washed and hydrothermally reacted with a soluble alkaline earth salt (typically Ba or Sr) at elevated temperature and pressure to convert the bead into a mixed hydrous titanium- or zirconium-alkaline earth oxide while retaining the generally spherical shape. Alternatively, the gel bead may be made by coprecipitation. This mixed oxide bead is then washed, dried and calcined to produce the desired (BaTiO3, PbTiO3, SrZrO3) structure. The sintered beads are incorporated into a selected polymer matrix.
    Type: Grant
    Filed: March 18, 2003
    Date of Patent: November 23, 2004
    Assignee: UT-Battelle, LLC
    Inventors: Robert J. Lauf, Kimberly K. Anderson, Frederick C. Montgomery, Jack L. Collins, John J. Felten
  • Patent number: 6800238
    Abstract: A method for domain patterning of nonlinear ferroelectric materials. The method seeks to reduce the formation of random and spontaneous micro-domains that typically result during thermal cycling of ferroelectric materials and which leads to patterning defects and degraded performance. In accordance with the invention, a ferroelectric wafer is provided with a conductive layer on the top and bottom surfaces of the wafer. A sufficient bias voltage is applied across the conductive layers to polarize the wafer into a single direction. At least one of the conductive layers is selectively patterned to form a conductive domain template. A sufficient revise bias voltage is then applied to the conductive domain template and a remaining conductive layer to produce the domain patterned structure. According to a preferred embodiment of the invention, the ferroelectric wafer is formed of LiNbO3 or LiTaO3.
    Type: Grant
    Filed: January 15, 2002
    Date of Patent: October 5, 2004
    Assignee: Silicon Light Machines, Inc.
    Inventor: Gregory D. Miller
  • Patent number: 6759792
    Abstract: In a polarization method of the multi-layered piezoelectric body in which a plurality of piezoelectric layers and a plurality of internal electrodes are alternately laminated and adjacent piezoelectric layers are polarized in the thickness direction such that the polarized directions thereof are in opposite directions, a first polarization process in which an electric field in one direction is applied in the thickness direction to the multi-layered piezoelectric body and a polarization is uniformly performed in the thickness direction, and a secondary polarization process in which an electric field in the opposite direction is applied to the piezoelectric layers on both sides of one of the internal electrodes and the direction of polarization of only one of the piezoelectric layers on one side of the internal electrode is reversed are provided.
    Type: Grant
    Filed: November 30, 2001
    Date of Patent: July 6, 2004
    Assignee: Murata Manufacturing Co., LTD
    Inventor: Mikio Nakajima
  • Patent number: 6750592
    Abstract: The present invention relates to a surface acoustic wave filter in which a plurality of pairs of comb electrode patterns are formed on an upper surface of a chip substrate made of a piezoelectric material. The surface acoustic wave filter includes a high-resistance pattern formed to surround a peripheral portion of the chip substrate on an upper surface side thereof, and a plurality of patterns formed to connect the high-resistance pattern to the respective comb electrode patterns.
    Type: Grant
    Filed: November 6, 2001
    Date of Patent: June 15, 2004
    Assignee: NRS Technologies, Inc.
    Inventors: Yoshihiro Takahashi, Tadaaki Tsuda, Yasushi Yamamoto, Hiroshi Kawahara
  • Patent number: 6706234
    Abstract: A direct-write method for depositing a polarized material of a predetermined computer-aided pattern onto a target surface, the method including the following steps: (1) forming a solution of a material capable of being polarized using a polarization solvent which can be removed by evaporation to provide a polarized material; (2) operating dispensing devices to dispense and deposit the solution onto the target surface substantially point by point and at least partially removing the solvent from the deposited solution to form a thin layer of substantially solidified material of the predetermined pattern; and (3) during the solvent-removing step, operating a high DC voltage for poling the deposited solution to achieve polarization in the material. The invention also provides a freeform fabrication method for building a multi-layer device, such as a micro-electro-mechanical system (MEMS), that exhibits piezoelectric or pyroelectric properties.
    Type: Grant
    Filed: August 8, 2001
    Date of Patent: March 16, 2004
    Assignee: Nanotek Instruments, Inc.
    Inventor: Wen-Chiang Huang
  • Publication number: 20040048054
    Abstract: A thermal conductive polymer molded article is formed by molding a thermotropic liquid crystalline composition comprised mainly of a thermotropic liquid crystalline polymer, wherein the thermal conductive polymer molded article is formed by applying a magnetic field or an electric field to the thermotropic liquid crystalline composition melted by heating so that the thermal conductive polymer molded article has a first thermal conductivity (&lgr;1) higher than a second thermal conductivity (&lgr;2) of a molded article formed by molding the thermotropic liquid crystalline polymer without the application of the field. The thermal conductive polymer molded article preferably has a first thermal conductivity (&lgr;1) of between 0.7 and 20 W/(m·K). Preferably, the thermotropic liquid crystalline polymer comprises at least one polymer selected from (A) a wholly aromatic polyester and (B) a wholly aromatic polyester amide.
    Type: Application
    Filed: July 11, 2003
    Publication date: March 11, 2004
    Inventors: Masayuki Tobita, Toru Kimura, Naoyuki Shimoyama, Tsukasa Ishigaki
  • Patent number: 6649115
    Abstract: A method of forming an interconnection component with integral conductive elastomeric sheet material, comprising providing a connector frame defining an opening, casting uncured elastomeric conductive polymer interface (ECPI) material onto the connector frame spanning the opening, and curing the ECPI in the presence of a magnetic field, to integrally couple the ECPI to the connector frame, and create a series of spaced conductive columns through the ECPI thickness.
    Type: Grant
    Filed: November 4, 2002
    Date of Patent: November 18, 2003
    Assignee: Paricon Technologies Corporation
    Inventors: Roger E. Weiss, Everett F. Simons