Plastic Patents (Class 361/323)
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Patent number: 12224125Abstract: A film capacitor that includes a dielectric resin film made of a thermosetting urethane resin; and a metal layer on at least one surface of the dielectric resin film, wherein the dielectric resin film contains at least an isocyanate group and a carbonyl group, and a ratio of a first absorption peak intensity of the isocyanate group in a wave number range of 2200 cm?1 to 2350 cm?1 to a second absorption peak intensity of the carbonyl group in a wave number range of 1650 cm?1 to 1800 cm?1 is 0.08 to 1.15.Type: GrantFiled: March 23, 2023Date of Patent: February 11, 2025Assignees: SHIZUKI ELECTRIC CO., INC., MURATA MANUFACTURING CO., LTD.Inventors: Senichi Ozasa, Tomomichi Ichikawa
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Patent number: 11469366Abstract: An object of the present invention is to improve the piezoelectricity of a PVT having the VDF ratio of 82 to 90% represented by a copolymer, in which copolymerization of vinylidene fluoride VDF and trifluoroethylene TrFe is 85 versus 15 (this is written as PVT85/15, and which is excellent in resistance to deformation, and heat resistance, etc. And therefore, it is also to obtain a piezoelectric film having piezoelectricity exceeding a PVT of less than 82 mol % of VDF represented by a PVT75/25, which conventionally shows the highest piezoelectricity, and a method of producing the same. A piezoelectric film is made of a mixture of two kinds (for example, a first copolymer is PVT85/15 and a second copolymer is PVT75/25) having different polymerization ratios of vinylidene fluoride VDF and trifluoroethylene TrFE.Type: GrantFiled: January 10, 2018Date of Patent: October 11, 2022Inventors: Kenji Omote, Tsurugi Samezawa, Hiroji Ohigashi
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Patent number: 11440292Abstract: A polypropylene film exhibits a high breakdown voltage even in a high temperature environment and can exhibit a voltage resistance and reliability even in a high temperature environment when used as a capacitor, and a metal layer laminated film and a film capacitor using the polypropylene film. For the polypropylene film, at least one surface of the film has an elastic modulus of 2.6 GPa or more, measured by nanoindentation measurement, and the sum of heat shrinkage rates is in the film longitudinal and width directions 5% or less in a heat treatment at 130° C. for ten minutes.Type: GrantFiled: August 27, 2018Date of Patent: September 13, 2022Assignee: Toray Industries, Inc.Inventors: Yasuyuki Imanishi, Masatoshi Ohkura, Yuta Nakanishi
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Patent number: 10910164Abstract: The present invention relates to a biaxially stretched polypropylene film for capacitor. The biaxially stretched polypropylene film for capacitor of the present invention can suppress an increase in tan ? and a decrease in the electrostatic capacitance even when the capacitor is used at a high voltage and an elevated temperature for a long duration.Type: GrantFiled: March 31, 2016Date of Patent: February 2, 2021Assignee: OJI HOLDINGS CORPORATIONInventors: Yoshimune Okuyama, Yoshikazu Fujishiro, Masahiro Nakata, Tadakazu Ishiwata, Akihiro Kakehi
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Patent number: 10755857Abstract: A composite polymeric material includes one or more repeating backbone units; one or more polarizable units incorporated into or connected to one or more of the one or more repeating backbone units; and one or more resistive tails connected to one or more of the repeating backbone units or to the one or more polarizable units as a side chain on the polarizable unit, on a hydrocarbon chain linking a polarizable unit to a backbone unit, or directly attached to a backbone unit. The composite polymeric material may be used to form a metadielectric, which may be sandwiched between to electrodes to form a metacapacitor.Type: GrantFiled: June 10, 2019Date of Patent: August 25, 2020Assignee: CAPACITOR SCIENCES INCORPORATEDInventors: Yan Li, Pavel Ivan Lazarev, Paul T. Furuta, Barry K. Sharp, Samuel Hein
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Patent number: 10692656Abstract: A film capacitor according to the present disclosure includes a first film and a second film wound in a stacked state and a first deposition electrode and a second deposition electrode that are formed by metal deposition. The second deposition electrode includes widthwise slit portions, the widthwise slit portions crossing the second deposition electrode in its widthwise direction, split electrodes split by the widthwise slit portions, and a longitudinal slit portion extending in a longitudinal direction of the second deposition electrode in an ineffective electrode region shifted from an effective electrode region in the widthwise direction of the second deposition electrode. Each split electrode includes a first fuse portion bridging over a longitudinal slit portion and a second fuse portion that bridges over a widthwise slit portion and can be fused with a current smaller than a current for the first fuse portion.Type: GrantFiled: February 5, 2019Date of Patent: June 23, 2020Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventors: Masahito Sano, Taiyou Tsukahara
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Patent number: 10329199Abstract: The embodiments of the present invention disclose a method for synthesizing ceramic composite powder and ceramic composite powder, pertaining to the technical field of inorganic non-metallic materials. Among them, the method includes preparing an aqueous slurry of ceramic raw materials, the aqueous slurry including ceramic raw material, water and low polymerization degree organometallic copolymer, the ceramic raw material including at least two components; adding a crosslinking coagulant into the aqueous slurry to obtain a gel; dehydrating and drying the gel to obtain the dried gel; heating the dried gel to the synthesizing temperature of the ceramic composite powder and conducting the heat preservation to obtain ceramic composite powder or ceramic composite base powder; conducting secondary doping on ceramic composite base powder to obtain the ceramic composite powder.Type: GrantFiled: July 14, 2017Date of Patent: June 25, 2019Assignee: XIANGTAN QUFO TECHNOLOGY MATERIAL CO., LTDInventors: Daming Chen, Xiaoping Ouyang, Yongli Zhang
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Patent number: 10262804Abstract: The present disclosure discloses an electric vehicle and a capacitor, the capacitor is configured to be connected to a DC bus of an electric vehicle and an insulated gate bipolar transistor, comprising a housing, groups of capacitor cores and groups of connecting terminals. The capacitor comprises a plurality of groups of capacitor cores, multiple groups of capacitor cores are independently disposed in the housing, each group of the capacitor cores comprises at least one capacitor core; the capacitor comprises a plurality of groups of connecting terminals, multiple groups of connecting terminals are disposed on the housing and connected to multiple groups of capacitor cores in an one-to-one manner, and each group of connecting terminals comprises a pair of electrodes protruding from the housing such that the pair of electrodes can be connected to a DC bus of an electric vehicle and an insulated gate bipolar transistor.Type: GrantFiled: February 13, 2015Date of Patent: April 16, 2019Assignee: BYD Company LimitedInventor: Wei Yang
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Patent number: 10079098Abstract: A case-mold-type capacitor includes a capacitor element, first and second bus bars connected to the first and second electrodes of the capacitor element, a case accommodating the capacitor element and the first and second bus bars, and a mold resin filling the case therein. The case has a cutaway portion provided therein. A sealing plate joined to the case so as to seal the cutaway portion. The first and second bus bars pass through the sealing plate and are fixed to the sealing plate. The case-mold-type capacitor improves dimensional accuracy between terminal portions of the first and second bus bars without increasing material cost, and has high reliability.Type: GrantFiled: October 20, 2017Date of Patent: September 18, 2018Assignee: Panasonic Intellectual Property Management Co., Ltd.Inventors: Shinya Sato, Toshihisa Miura
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Patent number: 10079107Abstract: A metallized film capacitor includes: a metallized film columnar body including two metallized films that are laminated and wound, the two metalized films each including a vapor-deposited metal film with a plurality of vapor-deposition-free slits and fuse portions each interposed between the vapor-deposition-free slits, and a polyvinylidene fluoride dielectric film, the metallized film columnar body having two electrode extraction surfaces; metal-sprayed parts disposed respectively on the two electrode extraction surfaces; and outgoing terminals joined respectively to the metal-sprayed parts. Each of the two metallized films has a shape with successive sloped ridges and valleys in a cross-section orthogonal to a winding direction, and the two metallized films are laminated such that the ridges and valleys of one of the metallized films are aligned with the ridges and valleys of the other one of the metallized films.Type: GrantFiled: April 4, 2017Date of Patent: September 18, 2018Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventor: Takahiro Saito
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Patent number: 9954191Abstract: An electronic or optoelectronic device includes: (1) a semiconductor layer; (2) a pair of electrodes electrically coupled to the semiconductor layer; and (3) a dielectric layer in contact with the semiconductor layer and including a polar elastomer, where the elastomer has a glass transition temperature Tg that is no greater than 25° C.Type: GrantFiled: April 16, 2015Date of Patent: April 24, 2018Assignee: The Board of Trustees of the Leland Stanford Junior UniversityInventors: Zhenan Bao, Chao Wang, Wen Ya Lee, Guillaume Schweicher, Desheng Kong
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Patent number: 9829813Abstract: Provided is a fluorine-containing resin particle dispersion including: fluorine-containing resin particles, a resin which is not dissolved in at least one solvent in a group of hydroxyl group-containing solvents including an alcohol-based solvent having 1 to 10 carbon atoms, containing no aromatic ring in the molecule structure, and a water-based medium, and which is adhered on the surface of the fluorine-containing resin particles, and at least one solvent, in which the resin is not dissolved, in the group of hydroxyl group-containing solvents, in which the fluorine-containing resin particles having the resin adhered on the surface thereof are dispersed.Type: GrantFiled: June 7, 2016Date of Patent: November 28, 2017Assignee: FUJI XEROX CO., LTD.Inventors: Katsumi Nukada, Wataru Yamada, Takatsugu Doi, Yuko Iwadate
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Patent number: 9595389Abstract: A film capacitor includes a first electrode layer, a second electrode layer, and a dielectric film disposed between the first and second electrode layers. The dielectric film mainly contains a styrene polymer having a syndiotactic structure. The first electrode layer includes first small electrode segments and a first fuse which interconnects the first small electrode segments. A value obtained by dividing an area of each of the plurality of first small electrode segments by the third power of a thickness of the dielectric film is not smaller than 0.4×1013/m and not larger than 5.0×1013/m. The film capacitor has a high withstanding voltage.Type: GrantFiled: May 20, 2013Date of Patent: March 14, 2017Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventors: Hiroki Takeoka, Yasuhiro Hiraki
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Patent number: 9540491Abstract: An organic-inorganic composite of the present invention includes metal oxide particles and an organic polymer compound including a monomer containing organic ligands and a vinyl-based monomer having organic ligands which are bonded to a polymer chain through covalent bonds and the organic polymer compound is bonded to the metal oxide particles by the organic ligands forming a complex with metal atoms on the surface of the metal oxide particles. According to the organic-inorganic composite, the metal oxide particles and the organic polymer compound containing the organic ligands can be chemically bonded, therefore, light emission characteristics such as light emission intensity or stabilization of light emission wavelength can be improved, and transparency and mechanical characteristics such as thermal stability or hardness can also be improved.Type: GrantFiled: January 27, 2011Date of Patent: January 10, 2017Assignees: SUMITOMO OSAKA CEMENT CO., LTD., KYOTO UNIVERSITYInventors: Takeshi Otsuka, Yoshiki Chujo
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Patent number: 9523016Abstract: The present invention aims to provide an aqueous dispersion capable of forming a coating film that has excellent adhesion to a substrate and excellent water resistance. The aqueous dispersion of the present invention includes fluorine-containing composite polymer particles of a polymer (A) with a repeating unit of vinylidene fluoride and a polymer (B) with a repeating unit of at least one acrylic monomer selected from the group consisting of acrylic acid, acrylic acid esters, methacrylic acid, and methacrylic acid esters, the dispersion having an acid value of at least 3 mgKOH/g.Type: GrantFiled: September 14, 2012Date of Patent: December 20, 2016Assignee: DAIKIN INDUSTRIES, LTD.Inventors: Shumi Yoshida, Katsuhiko Imoto
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Patent number: 9389525Abstract: Provided is a fluorine-containing resin particle dispersion including: fluorine-containing resin particles, a resin which is not dissolved in at least one solvent in a group of hydroxyl group-containing solvents including an alcohol-based solvent having 1 to 10 carbon atoms, containing no aromatic ring in the molecule structure, and a water-based medium, and which is adhered on the surface of the fluorine-containing resin particles, and at least one solvent, in which the resin is not dissolved, in the group of hydroxyl group-containing solvents, in which the fluorine-containing resin particles having the resin adhered on the surface thereof are dispersed.Type: GrantFiled: August 12, 2011Date of Patent: July 12, 2016Assignee: FUJI XEROX CO., LTD.Inventors: Katsumi Nukada, Wataru Yamada, Takatsugu Doi, Yuko Iwadate
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Patent number: 9373890Abstract: Disclosed is an antenna. The antenna includes a first radiating part bent in a predetermined direction, a second radiating part under the first radiating part, a conductive member connected to the second radiating part, and a coupling part spaced apart from the conductive member while surrounding a lateral side of the conductive member.Type: GrantFiled: September 28, 2012Date of Patent: June 21, 2016Assignee: LG INNOTEK CO., LTD.Inventor: Young Hun Park
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Patent number: 9177727Abstract: A metallized film capacitor includes first and second winding cores disposed along a center axis, and a capacitor element wound about the center axis around the first and the second winding cores. The second winding core is apart from the first winding core. The first and second winding cores have a thermal conductivity larger than that of the dielectric film of the capacitor element. Length Ld of the capacitor element in a direction of the center axis, length L1 of the first winding core inside the capacitor element in the direction of the center axis, and length L2 of the second winding core inside the capacitor element in the direction of the center axis satisfy the relations of L1>L2, L1+L2<Ld, L1?Ld/2, and L2?(Ld?L1)/2. The metallized film capacitor provides the capacitor element with improved heat dissipation performance.Type: GrantFiled: October 24, 2012Date of Patent: November 3, 2015Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventors: Tsuyoshi Ichinose, Hiroki Takeoka
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Patent number: 9139715Abstract: A coated metal pigment that has excellent passivation, dispersion and adhesion properties, a method for producing the coated metal pigment and a coating composition that includes the coated metal pigment are described.Type: GrantFiled: September 14, 2012Date of Patent: September 22, 2015Assignee: Silberline Manufacturing Co., Inc.Inventors: Anand Sundararaman, Yungwan Kwak, Craig Keemer, John Buchala, Mary Kate Thomas, Chang Xu, Parfait Jean Marie Likibi
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Patent number: 9129745Abstract: A laminated ceramic electronic component has a variety of superior mechanical properties and electrical properties, including a high degree of freedom in the design for ceramic materials, and can be manufactured at low cost and with a low percentage of defective products. The laminated ceramic electronic component includes a laminate including a plurality of stacked ceramic layers and a plurality of internal electrodes containing Al as a main constituent, the internal electrodes being arranged along specific interfaces between the ceramic layers, and external electrodes located on an outer surface of the laminate, wherein surface layer sections of the internal electrodes include an Al2O3 layer.Type: GrantFiled: September 23, 2010Date of Patent: September 8, 2015Assignee: Murata Manufacturing Co., Ltd.Inventors: Shoichiro Suzuki, Koichi Banno, Masahiro Otsuka, Masanori Nakamura, Seiichi Jono, Taisuke Kanzaki, Akihiro Shiota
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Publication number: 20150116904Abstract: A film capacitor includes a first electrode layer, a second electrode layer, and a dielectric film disposed between the first and second electrode layers. The dielectric film mainly contains a styrene polymer having a syndiotactic structure. The first electrode layer includes first small electrode segments and a first fuse which interconnects the first small electrode segments. A value obtained by dividing an area of each of the plurality of first small electrode segments by the third power of a thickness of the dielectric film is not smaller than 0.4×1013/m and not larger than 5.0×1013/m. The film capacitor has a high withstanding voltage.Type: ApplicationFiled: May 20, 2013Publication date: April 30, 2015Inventors: Hiroki Takeoka, Yasuhiro Hiraki
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Patent number: 8871850Abstract: There is provided a highly dielectric film which has high dielectric property, can be formed into a think film and is excellent in winding property (flexibility). The highly dielectric film comprises (A) a vinylidene fluoride polymer, (B) barium titanate oxide particles and/or lead zirconium titanate oxide particles, and (C) an affinity improving agent, wherein the barium titanate oxide particles and/or lead zirconium titanate oxide particles (B) and the affinity improving agent (C) are contained in amounts of 10 to 500 parts by mass and 0.01 to 30 parts by mass, respectively based on 100 parts by mass of the vinylidene fluoride polymer (A).Type: GrantFiled: June 27, 2011Date of Patent: October 28, 2014Assignee: Daikin Industries, Ltd.Inventors: Meiten Koh, Kouji Yokotani, Miharu Matsumura
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Publication number: 20140268493Abstract: Provided is a biaxially stretched polypropylene film for capacitors which has high withstand voltage characteristics when used as a dielectric for capacitors and which has highly suitable processability into elements. The biaxially stretched polypropylene film for capacitors has projections on both surfaces and has a thickness (t1, ?m) of 4-20 ?m. When one of the surfaces is expressed by surface A and the other by surface B, all of the following relationships are satisfied. 800?SRzB?1,300 (nm) 0.1?SRzA/SRzB?0.8 PBmin?100 (nm) PBmax?1,500 (nm) 0.4?PB450-750/PB?0.7.Type: ApplicationFiled: April 19, 2011Publication date: September 18, 2014Applicant: Toray Industries, Inc.Inventors: Takanori Nakatsuka, Masami Sugata, Tetsuya Asano
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Patent number: 8804308Abstract: A stretched film comprising a dispersion of at least one polyester and/or polycarbonate in a matrix of at least one polyester and/or polycarbonate different from the first polyester and/or polycarbonate, the percentage by weight of the dispersed polyester and/or polycarbonate in the dispersion being less than 50% and the dispersed polyester and/or polycarbonate being in the form of platelets. The stretched film can be used as a dielectric in a capacitor.Type: GrantFiled: April 10, 2009Date of Patent: August 12, 2014Assignee: Dupont Teijin Films U.S. Limited PartnershipInventors: Alexis Grosrenaud, Luclen Schosseler
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Patent number: 8804307Abstract: The present invention relates to a highly dielectric film formed by using (A) a fluorine-containing resin comprising vinylidene fluoride unit and tetrafluoroethylene unit in a total amount of not less than 95% by mole, and provides a film for a film capacitor which has high dielectric property and high withstanding voltage and can be made thin.Type: GrantFiled: January 24, 2008Date of Patent: August 12, 2014Assignee: Daikin Industries, Ltd.Inventors: Meiten Koh, Kouji Yokotani, Miharu Matsumura, Eri Mukai, Nobuyuki Komatsu
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Patent number: 8779047Abstract: There is provided a coating composition comprising (A) a thermoplastic non-fluorine-containing polymer, (B) inorganic ferroelectric particles, (C) an affinity-improving agent comprising at least one of a coupling agent, a surfactant and an epoxy group-containing compound, and (D) a solvent, and there is provided a film formed using the coating composition which has highly dielectric property and low dielectric loss, can be made thin, is excellent in winding property (flexibility) and is suitable as a highly dielectric film for a film capacitor.Type: GrantFiled: July 9, 2007Date of Patent: July 15, 2014Assignee: Daikin Industries, Ltd.Inventors: Meiten Koh, Nobuyuki Komatsu, Kouji Yokotani, Miharu Matsumura
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Patent number: 8749950Abstract: An ionic polymer metal composite (IPMC) capacitor is disclosed which includes a thin single layer non-hydrated ionic polymer substrate with conductive film electrodes applied to at least a portion of each side of the non-hydrated ionic polymer substrate. The disclosed capacitor is suited for providing thin capacitance structures made to substantially any desired dimensions and shape and may be particularly suited for short term power storage in low power electronics, sensors, micro-electronics, MEMs and high temperature applications. A method of manufacturing an IPMC capacitor is also disclosed including providing a thin single layer non-hydrated ionic polymer substrate, applying a conductive film electrode to both sides of the substrate, and attaching electrical connections to the electrodes. The disclosed method of manufacture may optionally also include heat curing the capacitor and coating the capacitor with at least one moisture-resistant protective coating layer.Type: GrantFiled: November 30, 2009Date of Patent: June 10, 2014Assignee: Simon Fraser UniversityInventors: Bozena Kaminska, Clinton K. Landrock
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Publication number: 20140111903Abstract: Three-phase electrical can capacitor with three star-connected capacitances in a housing, characterized in that two polymer film capacitor coils (10, 12), which each have a hollow capacitor coil core (14) and are provided on the end sides with in each case one end contact layer (16, 18 and 20, 22), are arranged one above the other in the form of a column in the housing, wherein one (10) of the two polymer film capacitor coils (10, 12) has one individual capacitance and the other (12) of the two polymer film capacitor coils has two individual capacitances, and all of the individual capacitances are equal in size.Type: ApplicationFiled: May 15, 2012Publication date: April 24, 2014Applicant: Frako Kondensatoren-und Anlagenabu GmbHInventor: Hans-Georg Reinbold
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Patent number: 8675345Abstract: There is provided a thin highly dielectric film for a film capacitor being excellent in mechanical strength, in which highly dielectric inorganic particles can be blended to a dielectric resin at high ratio, and rubber particles (B) and preferably highly dielectric inorganic particles (C) are dispersed in a thermoplastic resin (A).Type: GrantFiled: December 21, 2009Date of Patent: March 18, 2014Assignee: Daikin Industries, Ltd.Inventors: Mayuko Tatemichi, Miharu Ota, Kouji Yokotani, Nobuyuki Komatsu, Eri Mukai, Meiten Koh
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Patent number: 8670223Abstract: A case mold type capacitor is formed of multiple metalized film capacitors connected together in parallel and rigidly accommodated with molding resin within a case. The multiple metalized film capacitors are divided into a first block and a second block, and P-poles of each block confront each other, and N-poles thereof also confront each other. Bus-bars including a connection terminal for external connection at an end are connected to respective P-poles and N-poles of each block. The bus-bars connected to the P-poles are coupled together, and the bus-bars connected to the N-poles are coupled together. Each one of the bus-bars includes a section located on the opening side of the case with respect to the blocks. The bus-bars connected to the P-poles overlap in part, and the bus-bars connected to the N-poles also overlap in part.Type: GrantFiled: December 22, 2011Date of Patent: March 11, 2014Assignee: Panasonic CorporationInventors: Takeshi Imamura, Yoshinari Nagata, Toshiharu Saito
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Publication number: 20140016244Abstract: A biaxially stretched polypropylene film includes protrusions on both surfaces, in which the biaxially stretched polypropylene film has a thickness t1 of 1 ?m to 3 ?m, has a tensile strength in the machine direction of 120 MPa to 250 MPa, has a tensile strength in the transverse direction of 250 MPa to 400 MPa, has a minimum protrusion height Pmin of 100 nm or greater and a maximum protrusion height Pmax of 1,600 nm or smaller for either surface, and satisfies all of Formulae (1) to (3) when one of the surfaces is surface A and the other is surface B: 0.5 Pa250-450/Pa?1.0 (1), 0.5?Pb450-1600/Pb?1.0 (2), and 600?Pa+Pb?1,200 (3).Type: ApplicationFiled: March 6, 2012Publication date: January 16, 2014Applicant: Toray Industries, Inc,Inventors: Teruo Monno, Tetsuya Asano, Masami Sugata, Takanori Nakatsuka
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Patent number: 8611068Abstract: A multilayer polymer dielectric film includes a coextruded first dielectric layer and second dielectric layer. The first dielectric includes a first polymer material and the second dielectric layer includes a second polymer material. The first dielectric layer and the second dielectric layer defining an interface between the layers that delocalizes charges in the layers.Type: GrantFiled: October 16, 2009Date of Patent: December 17, 2013Assignee: Case Western Reserve UniversityInventors: Eric Baer, Anne Hiltner, James S. Shirk, Mason A. Wolak
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Patent number: 8576540Abstract: The present invention provides a nonporous highly dielectric film which can improve withstanding voltage, insulating property and dielectric constant, especially can decrease a dielectric loss at high temperatures and can be made thin, and a coating composition for forming the highly dielectric film comprising (A) a vinylidene fluoride resin, (B) a cellulose resin and (C) a solvent.Type: GrantFiled: March 17, 2009Date of Patent: November 5, 2013Assignee: Daikin Industries, Ltd.Inventors: Meiten Koh, Mayuko Tatemichi, Eri Mukai, Miharu Ota, Kouji Yokotani, Nobuyuki Komatsu
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Publication number: 20130188293Abstract: Provided is a film for a film capacitor in which electrical insulation, and especially electrical properties at high temperatures are improved while a high dielectric constant of a vinylidene fluoride resin is maintained. The film for a film capacitor includes a tetrafluoroethylene resin (a1) that includes a vinylidene fluoride unit and a tetrafluoroethylene unit in the vinylidene fluoride unit/tetrafluoroethylene unit ratio (mol %) of 0/100 to 49/51 as a film-forming resin (A).Type: ApplicationFiled: September 21, 2011Publication date: July 25, 2013Applicant: DAIKIN INDUSTRIES, LTD.Inventors: Meiten Koh, Eri Mukai, Nobuyuki Komatsu, Kouji Yokotani, Mayuko Tatemichi, Kakeru Hanabusa, Takahiro Kitahara, Takuma Kawabe
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Patent number: 8451579Abstract: A metalized film capacitor includes a first dielectric film, a first metal thin-film electrode provided on a surface of the first dielectric film, a second dielectric film provided on the first metal thin-film electrode, and a second metal thin-film electrode provided on the second dielectric film, such that the second metal thin-film electrode faces the first metal thin-film electrode across the second dielectric film. The surface of the first dielectric film has a surface energy ranging from 25 mN/m to 40 mN/m. The metalized film capacitor exhibits high heat resistance and a preferable self-healing effect.Type: GrantFiled: June 30, 2009Date of Patent: May 28, 2013Assignee: Panasonic CorporationInventors: Hiroki Takeoka, Hiroshi Kubota, Hiroshi Fujii, Yukikazu Ohchi, Yukihiro Shimasaki
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Patent number: 8427810Abstract: 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: GrantFiled: May 7, 2008Date of Patent: April 23, 2013Assignee: Borealis Technology OyInventors: Manfred Stadlbauer, Eberhard Ernst, Lauri Huhtanen, Yvo Daniels, Franck Jacobs
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Publication number: 20120307419Abstract: A capacitor having a first electrode, a second electrode, a dielectric layer of a PTFE film having a dielectric strength greater than about 500 V/um, a tensile strength of greater than about 10,000 psi (or, alternatively, a tensile yield strength of greater than about 2,000 psi), and a thickness less than about 20 microns disposed between the first electrode and the second electrode.Type: ApplicationFiled: June 1, 2012Publication date: December 6, 2012Inventors: Mark N. Donhowe, Jeffrey M. Lawler
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Patent number: 8325461Abstract: A feed-through capacitor is constructed in a printed wiring board using alternating layers of metal capacitive layers and plastic dielectric layers of the printed wiring board. The large number of layers, the avoidance of ceramic layers and the flexible geometry of this device allow it to be used in many applications, particularly in those involving high power high current. Also, because it utilizes a printed wiring board, the capacitor can be made in numerous sizes and shapes.Type: GrantFiled: August 8, 2008Date of Patent: December 4, 2012Assignee: Hamilton Sundstrand CorporationInventors: Eugene W. Dolfi, Mark W. Metzler, Mark C. Lukan, Eric A. Carter
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Patent number: 8310802Abstract: A metallization film capacitor that achieves both high heat resistance and high withstand voltage at the same time. A metal-deposited electrode is formed on a PEN film in each of a pair of metalized films. These metalized films are wound such that the metal-deposited electrodes face each other via the dielectric film in between. A metalized contact electrode is formed on both end faces of these wound metalized films to configure the metallization film capacitor. A divisional electrode is provided on the metal-deposited electrode. In addition, a fuse is coupled to this divisional electrode for providing a self-maintaining function. Pass rate a/b of a deposition pattern is set to 4.0 or smaller, where ‘a’ is the fuse width, and ‘b’ is the length of the divisional electrode in a lengthwise direction of the metalized films.Type: GrantFiled: August 27, 2007Date of Patent: November 13, 2012Assignee: Panasonic CorporationInventors: Hiroshi Fujii, Takuya Kyouda, Hiroki Takeoka
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Publication number: 20120262841Abstract: A film capacitor element is provided which has a smaller size and higher capacity while securing the sufficient withstand voltage at a high level and which can be efficiently produced. The film capacitor element including a laminated body including at least one dielectric film and at least one metal deposition film. The at least one dielectric includes at least one vapor-deposited polymer film. The at least vapor-deposited polymer film is formed by a deposition polymerization of a plurality of monomers each having a structure in which two benzene rings are linked via a linking group.Type: ApplicationFiled: March 12, 2012Publication date: October 18, 2012Applicant: Kojima Press Industry Co., Ltd.Inventors: Akito TERASHIMA, Kaoru Ito, Munetaka Hayakawa
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Patent number: 8274778Abstract: A capacitor formed by winding a multilayer film in which an insulation film, a cathode, electrode, an insulation film and an anode electrode are serially multilayered, wherein at least one of first insulation film and second insulation film is formed so that an end portion of insulation film on an inward side of the capacitor has a thickness larger than a thickness of an end portion thereof on an outward side of the capacitor.Type: GrantFiled: October 17, 2008Date of Patent: September 25, 2012Assignee: Toyota Jidosha Kabushiki KaishaInventors: Fumitaka Yoshinaga, Naoyoshi Takamatsu
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Patent number: 8248755Abstract: A polyimide resin is provided. The polyimide resin comprises the reaction product of a polyimide resin and an amine comprising a C1-10 hydrocarbon substituted with CN, F, SO2, SO, S, SO3, SO3?, PO, PO2H, PO3H, PO2?, PO3?2, CO, CO2?, CO2H, CONH, CONH2, NHCOHN, OCONH, OCO2, N, NH, NH2, NO2, CSNH, CSNH2, NHCSNH, OTi(OR4)3, or OSi(OR4)3 or combinations of these, wherein R4 is a C1-10 aliphatic or aromatic hydrocarbon. The resin may be used to provide a thin film that in turn, may advantageously be used to form, wholly or in part, articles such as capacitors, sensors, batteries, flexible printed circuit boards, keyboard membranes, motor/transformer insulations, cable wrappings, industrial tapes, interior coverage materials, and the like. In particular, a capacitor comprising the thin film and methods of making the same are also provided.Type: GrantFiled: April 30, 2010Date of Patent: August 21, 2012Assignee: General Electric CompanyInventors: Gary William Yeager, Norberto Silvi, Patricia Chapman Irwin, Robert Colin McTigue
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Patent number: 8179661Abstract: An organic dielectric material comprises a branched and/or hyperbranched macromolecule having delocalized electrons. Such macro-molecular organic material systems have desirable delocalized charge and optionally one or more micro-crystalline regions. Organic dielectric materials include, for example, branched polyanilines and phthalocyanines. Delocalized excitations within the macromolecular framework of the organic dielectric material may be used in various applications, such as light harvesting, nonlinear optical, quantum optical, and electronic applications, e.g., capacitors. Electrical devices may comprise such dielectric materials, including capacitors that have very high energy density, storage, and transfer. Also provided are methods of preparing such materials.Type: GrantFiled: June 27, 2008Date of Patent: May 15, 2012Assignee: The Regents of The University of MichiganInventors: Theodore Goodson, III, Xingzhong Yan
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Patent number: 8159812Abstract: A capacitor element for a power capacitor. The capacitor element includes a plurality of series-connected cylindrical sub-elements. Each sub-element includes at least two strips of dielectric material wound in a number of turns. A layer of electrically conductive material is disposed between the turns of the winding. The sub-elements are disposed one outside the other as seen in a direction transversely to the plane of the strip. A strip in an outermost sub-element is longer than the strip in each inwardly lying sub-element. A power capacitor includes a plurality of the capacitor elements, and a capacitor battery includes a plurality of the power capacitors. A method of manufacturing the inventive capacitor element and the use of the inventive power capacitor.Type: GrantFiled: November 2, 2006Date of Patent: April 17, 2012Assignee: ABB Technologies Ltd.Inventor: Esbjörn Eriksson
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Publication number: 20120081833Abstract: One embodiment of this invention is directed to an electronic article, formed in part from a polyetherimide resin having a repeating unit of formula I: Another embodiment describes a capacitor which includes a dielectric film formed from such a polyetherimide resin. The capacitor further includes at least one electrode attached to a first surface of the dielectric film.Type: ApplicationFiled: September 30, 2010Publication date: April 5, 2012Applicant: GENERAL ELECTRIC COMPANYInventors: Yang Cao, Daniel Qi Tan, Sheldon Jay Shafer, Xiaomei Fang
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Patent number: 8098479Abstract: A capacitor is provided having a capacitor element, with first and second metalized thermoplastic sheets, which are offset and wound together to create common edges at opposite ends, a zinc or zinc-rich conductive coating thermally sprayed on each of the common edges of the capacitor element, and aluminum or aluminum-rich terminals welded to each of the conductive coatings to form a metallurgical bond, having a pull strength of at least 5 pounds, without damaging the capacitor element.Type: GrantFiled: September 19, 2008Date of Patent: January 17, 2012Assignee: Cornell Dubilier Marketing, Inc.Inventors: Samuel G. Parler, Jr., Herbert David Leigh, III
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Publication number: 20120008251Abstract: A film capacitor comprising (1) of electric conduction electrodes and (2) of semi-crystalline polymeric dielectric film(s), the thickness of which ranges from 1 micron to 80 micron, made by a melt-stretching extrusion process through a die (circular die or flat die) with a drawdown ratio of 30 or higher (the ratio of die gap to the film thickness) at die temperatures higher than the melting point of said semi-crystalline polymer(s). The semi-crystalline polymeric dielectric films made by such melt-stretching extrusion process show a significantly low shrinkage at high temperatures until they are melted. The capacitor comprising such low shrinkage film dielectrics can be used at a much higher temperature than comprising conventional biaxially oriented film dielectrics made of the same plastic materials.Type: ApplicationFiled: July 12, 2010Publication date: January 12, 2012Inventors: Wei-Ching Yu, Jason Yu
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Publication number: 20110299222Abstract: The present invention provides a method for manufacturing a film for a film capacitor in which a film can be prepared by melt extrusion molding in a thin film having a thickness of 10 ?m or less and in which a cost can be cut by simplifying a manufacturing step thereof and a film for a film capacitor. It is a method for manufacturing a film for a film capacitor comprising the steps of charging a melt extrusion molding equipment 10 with a molding material 1 to mold a film 20 for a film capacitor by extruding from a dice 12, interposing the above extruded and molded film 20 for a film capacitor between a pressing roll 31 and a metal roll 32 to cool it and winding up the cooled film 20 for a film capacitor having a thickness of 10 ?m or less in order on a winding tube 41 of a winding device 40, wherein the molding material 1 is prepared by adding a fluorocarbon resin to a PEI resin having a glass transition point of 200° C.Type: ApplicationFiled: December 29, 2010Publication date: December 8, 2011Applicant: SHIN-ETSU POLYMER CO., LTD.Inventors: Kazuhiro SUZUKI, Takashi Gonda, Norimasa Shinada, Yuzo Morioka
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Publication number: 20110286145Abstract: An assembly has at least two conducting surfaces and a dielectric therebetween formed of a plastic nonwoven fabric that is impregnated with cast resin. A corresponding feed-through for high voltages has a central conductor, around which conducting intermediate layers concentrically spaced from each other are arranged as conducting surfaces. A plastic nonwoven fabric impregnated with cast resin is located between the conducting intermediate layers as a dielectric.Type: ApplicationFiled: January 18, 2010Publication date: November 24, 2011Applicant: SIEMENS AKTIENGESELLSCHAFTInventors: Achim Langens, Christian Paul, Tim Schnitzler
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Publication number: 20110267739Abstract: A polyimide resin is provided. The polyimide resin comprises the reaction product of a polyimide resin and an amine comprising a C1-10 hydrocarbon substituted with CN, F, SO2, SO, S, SO3, SO3?, PO, PO2H, PO3H, PO2?, PO3?2, CO, CO2?, CO2H, CONH, CONH2, NHCOHN, OCONH, OCO2, N, NH, NH2, NO2, CSNH, CSNH2, NHCSNH, OTi(OR4)3, or OSi(OR4)3 or combinations of these, wherein R4 is a C1-10 aliphatic or aromatic hydrocarbon. The resin may be used to provide a thin film that in turn, may advantageously be used to form, wholly or in part, articles such as capacitors, sensors, batteries, flexible printed circuit boards, keyboard membranes, motor/transformer insulations, cable wrappings, industrial tapes, interior coverage materials, and the like. In particular, a capacitor comprising the thin film and methods of making the same are also provided.Type: ApplicationFiled: April 30, 2010Publication date: November 3, 2011Applicant: GENERAL ELECTRIC COMPANYInventors: Gary William Yeager, Norberto Silvi, Patricia Chapman Irwin, Robert Colin McTigue