Patents by Inventor Kohei Shiota
Kohei Shiota 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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Patent number: 7697261Abstract: A metalized film capacitor includes a metal deposition electrode on a dielectric film. The metal deposition electrode includes slits provided and divided only at a side opposite to low resistance portions connected to a metalized contact, and fuses provided between the slits. In a laminated metalized film, slits provided at a central portion in a width direction of the metalized deposition electrode and extending in the longitudinal direction of the dielectric film do not overlap with each other.Type: GrantFiled: January 23, 2006Date of Patent: April 13, 2010Assignee: Panasonic CorporationInventors: Shigeo Okuno, Kohei Shiota, Kazuhiro Nakatsubo
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Patent number: 7529076Abstract: A film capacitor suited to car-mount application, excellent in heat cycle tolerance and humidity resistance, and high in productivity, while maintaining low heat generation and low inductance characteristic is provided. The film capacitor comprises a film capacitor element, a bus bar as metal terminal connected to electrode of this film capacitor element, and a case for containing them, in which the film capacitor element and bus bar are packed within the case by plural layers of epoxy resin compositions, and the plural layers of epoxy resin compositions are composed so that the coefficient of linear expansion is smallest in the composition disposed in the uppermost layer.Type: GrantFiled: June 30, 2008Date of Patent: May 5, 2009Assignee: Panasonic CorporationInventors: Toshiharu Saito, Hiroki Takeoka, Toshihisa Miura, Makoto Tomita, Kohei Shiota
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Publication number: 20080273289Abstract: A film capacitor suited to car-mount application, excellent in heat cycle tolerance and humidity resistance, and high in productivity, while maintaining low heat generation and low inductance characteristic is provided. The film capacitor comprises a film capacitor element, a bus bar as metal terminal connected to electrode of this film capacitor element, and a case for containing them, in which the film capacitor element and bus bar are packed within the case by plural layers of epoxy resin compositions, and the plural layers of epoxy resin compositions are composed so that the coefficient of linear expansion is smallest in the composition disposed in the uppermost layer.Type: ApplicationFiled: June 30, 2008Publication date: November 6, 2008Applicant: MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.Inventors: Toshiharu Saito, Hiroki Takeoka, Toshihisa Miura, Makoto Tomita, Kohei Shiota
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Publication number: 20080259522Abstract: A metalized film capacitor includes a metal deposition electrode on a dielectric film. The metal deposition electrode includes slits provided and divided only at a side opposite to low resistance portions connected to a metalized contact, and fuses provided between the slits. In a laminated metalized film, slits provided at a central portion in a width direction of the metalized deposition electrode and extending in the longitudinal direction of the dielectric film do not overlap with each other.Type: ApplicationFiled: January 23, 2006Publication date: October 23, 2008Applicant: MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.Inventors: Shigeo Okuno, Kohei Shiota, Kazuhiro Nakatsubo
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Patent number: 7408761Abstract: A film capacitor suited to car-mount application, excellent in heat cycle tolerance and humidity resistance, and high in productivity, while maintaining low heat generation and low inductance characteristic is provided. The film capacitor comprises a film capacitor element, a bus bar as metal terminal connected to electrode of this film capacitor element, and a case for containing them, in which the film capacitor element and bus bar are packed within the case by plural layers of epoxy resin compositions, and the plural layers of epoxy resin compositions are composed so that the coefficient of linear expansion is smallest in the composition disposed in the uppermost layer.Type: GrantFiled: November 17, 2005Date of Patent: August 5, 2008Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Toshiharu Saito, Hiroki Takeoka, Toshihisa Miura, Makoto Tomita, Kohei Shiota
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Patent number: 7291185Abstract: A method of manufacturing a both-side metallized insulation film comprises steps of: depositing zinc or a blend of zinc and aluminum onto both sides of an insulation film; and winding this metallized film into a product roll. The method is characterized in spraying an oxidizing gas onto a deposited layer on an inner side of the insulation film to be wound, during the winding step. During a vacuum deposition step, an oil layer is formed on at least one side of the metallized film. In addition, an oxide layer is formed by exposing a deposited layer on at least one side to oxygen, or by spraying an oxygen-containing gas onto the deposited layer on at least one side during the winding of the metallized film into the product roll.Type: GrantFiled: June 6, 2002Date of Patent: November 6, 2007Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Kohei Shiota, Toshiharu Saito, Kazumi Osamura, Hiroki Takeoka, Kazuhiro Nakatsubo, Toshiyuki Nishimori, Masatoshi Shibuya, Toshihiro Sasaki, Shigeo Okabe
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Patent number: 7092238Abstract: The present invention is to provide a metallized film capacitor having a compact size, a large capacitance and a low inductance whereas number of parts is reduced. The metallized film capacitor comprises: a plurality of capacitor elements (1) provided with metallized contact electrodes (2) on both ends in the width direction; a bus-bar (3) to connect each of a plurality of electrodes (2) on one end; and a capacitor case (5) to house a plurality of capacitor elements (1), wherein a plurality of capacitor elements (1) are arranged in the capacitor case such that one side of electrodes (2) faces the opening surface of capacitor case (1) and each electrode (2) of one of both ends of each capacitor element (1) are positioned generally coplanarly.Type: GrantFiled: December 3, 2003Date of Patent: August 15, 2006Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Toshiharu Saito, Kohei Shiota, Hiroki Takeoka
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Publication number: 20060104006Abstract: The invention provides a film capacitor and its manufacturing method suited to car-mount application, excellent in heat cycle tolerance and humidity resistance, and high in productivity, while maintaining low heat generation and low inductance characteristic. A film capacitor comprises a film capacitor element 1, a bus bar 3 as metal terminal connected to electrode 2 of this film capacitor element 1, and a case 8 for containing them, in which the film capacitor element 1 and bus bar 3 are packed within the case 8 by plural layers of epoxy resin compositions 6, 7, and the plural layers of epoxy resin compositions 6, 7 are formed in layers, and are composed so that the coefficient of linear expansion may be smallest in the epoxy resin composition 7 disposed in the uppermost layer, and therefore resin cracks can be prevented at the time of heat cycle, and a film capacitor of high reliability excellent inhumidity resistance is obtained.Type: ApplicationFiled: November 17, 2005Publication date: May 18, 2006Inventors: Toshiharu Saito, Hiroki Takeoka, Toshihisa Miura, Makoto Tomita, Kohei Shiota
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Patent number: 7027286Abstract: A metallized-film capacitor includes a slit (5a) at approx. center of the width (W) of an effective electrode which actually forms a capacitance of a pair of deposited electrodes (110, 210). Divisional electrodes (2a, 2b) exist at a place between the center and insulation margins (4a, 4b), and the electrodes (2a, 2b) are coupled in parallel to each other by fuses (7a, 7b) disposed away from metallized contacts (6a, 6b). Such a structure as placing fuses (7a, 7b) away from the contacts (6a, 6b) allows reducing a current supplied from the contacts (6a, 6b) and running through fuses (7a, 7b), thereby lowering heat generated from fuses (7a, 7b). As a result, a temperature rise in the metallized-film capacitor can be suppressed.Type: GrantFiled: October 9, 2003Date of Patent: April 11, 2006Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Kohei Shiota, Toshiharu Saito, Hiroki Takeoka
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Publication number: 20060050467Abstract: A metallized-film capacitor includes a slit (5a) at approx. center of the width (W) of an effective electrode which actually forms a capacitance of a pair of deposited electrodes (110, 210). Divisional electrodes (2a, 2b) exist at a place between the center and insulation margins (4a, 4b), and the electrodes (2a, 2b) are coupled in parallel to each other by fuses (7a, 7b) disposed away from metallized contacts (6a, 6b). Such a structure as placing fuses (7a, 7b) away from the contacts (6a, 6b) allows reducing a current supplied from the contacts (6a, 6b) and running through fuses (7a, 7b), thereby lowering heat generated from fuses (7a, 7b). As a result, a temperature rise in the metallized-film capacitor can be suppressed.Type: ApplicationFiled: October 9, 2003Publication date: March 9, 2006Inventors: Kohei Shiota, Toshiharu Saito, Hiroki Takeoka
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Publication number: 20050263845Abstract: The present invention is to provide a metallized film capacitor having a compact size, a large capacitance and a low inductance whereas number of parts is reduced. The metallized film capacitor comprises: a plurality of capacitor elements (1) provided with metallized contact electrodes (2) on both ends in the width direction; a bus-bar (3) to connect each of a plurality of electrodes (2) on one end; and a capacitor case (5) to house a plurality of capacitor elements (1), wherein a plurality of capacitor elements (1) are arranged in the capacitor case such that one side of electrodes (2) faces the opening surface of capacitor case (1) and each electrode (2) of one of both ends of each capacitor element (1) are positioned generally coplanarly.Type: ApplicationFiled: December 3, 2003Publication date: December 1, 2005Applicant: MASTSUSHITA ELECTRIC INDUSTRIAL CO., LTD.Inventors: Toshiharu Saito, Kohei Shiota, Hiroki Takeoka
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Patent number: 6954349Abstract: A metallized film capacitor is made by winding or laminating a both-side metallized polypropylene (PP) film and a non-metallized PP film. Limiting the heat shrinkage factor and the thickness of the PP films, the position of deposited electrodes, and the rate of the peeled area of the deposited electrodes to a certain range provides a metallized film capacitor having improved dieletric strength, tan ?, and charge-discharge characteristics.Type: GrantFiled: June 6, 2002Date of Patent: October 11, 2005Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Kohei Shiota, Toshihiro Sasaki, Shigeo Okabe, Hiroki Takeoka, Toshiyuki Nishimori, Toshiharu Saito
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Publication number: 20040232465Abstract: A metallized film capacitor made by winding or laminating a both-side metallized polypropylene (PP) film and a non-metallized PP film. Limiting the heat shrinkage factor and the thickness of the PP films, the position of deposited electrodes, and the rate of the peeled area of the deposited electrodes to a curtain range provides a metallized film capacitor having improved dielectric strength, tan &dgr;, and charge-discharge characteristics.Type: ApplicationFiled: June 3, 2004Publication date: November 25, 2004Inventors: Kohei Shiota, Toshihiro Sasaki, Shigeo Okabe, Hiroki Takeoka, Toshiyuki Nishimori, Toshiharu Saito
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Publication number: 20040207970Abstract: The method of manufacturing double surface metallized insulating film of the present invention comprises vacuum depositing zinc or zinc-aluminum mixture on both sides of insulating film and winding the film to a product roll, wherein oxidizing gas is sprayed to an inner side deposited film when it is wound up. Also, during the deposition, oil layer is formed on at least one side of the film, and the deposited film on at least on one side is exposed to an oxygen-contained atmosphere, or oxygen-contained gas is sprayed to at least one side of the vacuum deposited film in the step of winding the film to a product roll, to form an oxide layer. According to the method of manufacturing of the present invention, the problem of a blocking that occurs as a sticking together and peeling off of the deposited films inside the product roll is avoided.Type: ApplicationFiled: May 24, 2004Publication date: October 21, 2004Inventors: Kohei Shiota, Toshiharu Saito, Kazumi Osamura, Hiroki Takeoka, Kazuhiro Nakatsubo, Toshiyuki Nishimori, Masatoshi Shibuya, Toshihiro Sasaki, Shigeo Okabe
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Patent number: 5231269Abstract: An electromagnetic wave energy conversion heat-generating material comprising zinc oxide whisker used as a heat-generating material. A heating container for an electronic oven, comprising the zinc oxide whiskers, and a microwave oven provided with a heat generator comprising the zinc oxide whiskers. The present electromagnetic wave energy conversion heat-generating material generates heat upon exposure to microwaves. In a preferred embodiment, the zinc oxide whiskers include a central part and needle crystal projections extending from the central part in plural, preferable four, different axial directions.Type: GrantFiled: February 15, 1990Date of Patent: July 27, 1993Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Mitsumasa Oku, Kohei Shiota
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Patent number: 4535382Abstract: An oil-impregnated capacitor produced by infiltrating a liquid impregnant containing at least one organometallic compound, represented by organic silane compounds, having a hydrolyzable group represented by alkoxy groups and acyloxy group and an organic functional group represented by vinyl group, epoxy group, mercapto group, methacrylo group, chlorine atom and peroxide group. It shows good characteristics when used under high stress conditions, in particular, at a high temperature and a high voltage.Type: GrantFiled: March 14, 1984Date of Patent: August 13, 1985Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Hidekazu Wada, Hironori Yoshino, Kohei Shiota