Patents by Inventor Kazutoshi Emoto
Kazutoshi Emoto 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: 9831480Abstract: A fiber-containing polymer film contains a host polymer and fibrous substances. The fiber-containing polymer film has an orientation area where the fibrous substances are oriented in a direction substantially parallel to a main surface of the fiber-containing polymer film and in substantially the same direction.Type: GrantFiled: November 16, 2009Date of Patent: November 28, 2017Assignee: TDK CORPORATIONInventors: Katsuo Naoi, Kazutoshi Emoto, Kiyonori Hinoki, Masahiro Saegusa, Kenji Nishizawa, Mitsuo Kougo
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Patent number: 9214661Abstract: An electrode manufacturing method which can lower the impedance of electrochemical devices is provided. The electrode manufacturing method comprises the steps of applying a coating material containing an active material particle, a binder, and a good solvent for the binder to a current collector, so as to form a coating film made of the coating material; removing the good solvent from the coating film; applying a poor solvent for the binder to the coating film having removed the good solvent; and pressing the coating film coated with the poor solvent.Type: GrantFiled: August 26, 2009Date of Patent: December 15, 2015Assignee: TDK CORPORATIONInventors: Katsuo Naoi, Kazutoshi Emoto, Kiyonori Hinoki, Masahiro Saegusa, Kenji Nishizawa, Mitsuo Kougo
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Patent number: 8722253Abstract: A lithium ion secondary battery containing a pair of electrodes facing each other, and a separator interposed between the electrodes, wherein at least one of the electrodes has a protecting layer, an active-material containing layer, and a collector sequentially from the separator. The protecting layer contains a silicone resin particle having at least one structural unit represented by RSiO1.5 and R2SiO, where R represents an alkyl group having 1 to 6 carbon atoms or a phenyl group.Type: GrantFiled: August 30, 2013Date of Patent: May 13, 2014Assignee: TDK CorporationInventors: Kiyonori Hinoki, Kazutoshi Emoto, Haruka Nishimura, Masahiro Saegusa
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Publication number: 20130344384Abstract: A lithium ion secondary battery containing a pair of electrodes facing each other, and a separator interposed between the electrodes, wherein at least one of the electrodes has a protecting layer, an active-material containing layer, and a collector sequentially from the separator. The protecting layer contains a silicone resin particle having at least one structural unit represented by RSiO1.5 and R2SiO, where R represents an alkyl group having 1 to 6 carbon atoms or a phenyl group.Type: ApplicationFiled: August 30, 2013Publication date: December 26, 2013Applicant: TDK CORPORATIONInventors: Kiyonori HINOKI, Kazutoshi EMOTO, Haruka NISHIMURA, Masahiro SAEGUSA
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Patent number: 8557437Abstract: An electrode for a lithium ion secondary battery having a collector, an active-material layer formed on the collector and a protecting layer formed on the active-material layer, in which the protecting layer contains an organic particle formed of poly(methyl methacrylate) having a crosslinked structure, and the organic particle has an average particle size (D50) of 0.5 to 4.0 ?m.Type: GrantFiled: March 19, 2010Date of Patent: October 15, 2013Assignee: TDK CorporationInventors: Kiyonori Hinoki, Kazutoshi Emoto, Haruka Nishimura, Masahiro Saegusa
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Patent number: 8393291Abstract: A liquid application apparatus includes a guide roll for guiding a sheet for application, and a slit die for applying a liquid to a surface of the sheet for application from an opening. The slit die has an upper layer flow path and a lower layer flow path spaced in the rotational direction of the guide roll and joining at the opening. In a cross section perpendicular to the axis of the guide roll, an angle ? formed by the center line of the upper layer flow path and the center line of the lower layer flow path is 0.Type: GrantFiled: March 16, 2010Date of Patent: March 12, 2013Assignee: TDK CorporationInventors: Kazutoshi Emoto, Kiyonori Hinoki, Masahiro Saegusa, Haruka Nishimura
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Patent number: 8334009Abstract: An electrode producing method by an electrode producing apparatus has an inclining step of pressing a surface of a current collector sheet with projections extending outwardly from the surface, which is conveyed in a definite direction, to incline the projections in a direction opposite to the definite direction of the current collector sheet; and an applying step of applying a coating solution onto the current collector sheet, the projections of which have been inclined in the inclining step and which is conveyed in the definite direction, by a slit die. After the surface of the current collector sheet is pressed to incline the projections on the sheet surface in the opposite direction to the conveyance direction, the coating solution is applied onto the surface. Therefore, the coating solution can be uniformly applied onto the current collector sheet.Type: GrantFiled: September 16, 2009Date of Patent: December 18, 2012Assignee: TDK CorporationInventors: Kazutoshi Emoto, Katsuo Naoi, Kiyonori Hinoki, Masahiro Saegusa, Masayoshi Hirano
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Patent number: 8273482Abstract: An electrode having a current collector with a plurality of through holes, and active material layers provided on both sides of the current collector. The current collector has projections extending on the top side or on the back side of the current collector from edges of the through holes, and an angle between each of the projections and a surface direction of the current collector is in the range of 30 to 80°.Type: GrantFiled: September 16, 2009Date of Patent: September 25, 2012Assignee: TDK CorporationInventors: Katsuo Naoi, Kazutoshi Emoto, Kiyonori Hinoki, Masahiro Saegusa, Kenji Nishizawa, Mitsuo Kougo
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Patent number: 8163332Abstract: An electrode manufacturing apparatus comprises a conveying section for conveying a current collector sheet having a plurality of through holes; a backup roll for guiding the conveyed current collector sheet; an applicator for supplying a coating liquid to the current collector sheet on the backup roll; and a nip roll for pressing a part of the current collector sheet where the coating liquid is not supplied yet from the applicator against the backup roll.Type: GrantFiled: September 16, 2009Date of Patent: April 24, 2012Assignee: TDK CorporationInventors: Kazutoshi Emoto, Katsuo Naoi, Kiyonori Hinoki, Masayoshi Hirano
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Patent number: 8020510Abstract: A liquid applicator comprises a guide roll for guiding a sheet, and a slit die, having a slit with an opening extending in an axial direction of the guide roll, for applying a liquid to a surface of the sheet guided by the guide roll. On the rear side of the opening in a rotating direction of the guide roll, the slit die further includes a front lip having a concave surface corresponding to the guide roll. The front lip opposes the guide roll by such a length FA in the rotating direction RD of the guide roll as to have a central angle ? of 0.95° to 3.0° about an axis O of the guide roll.Type: GrantFiled: May 19, 2008Date of Patent: September 20, 2011Assignee: TDK CorporationInventors: Kazutoshi Emoto, Kazuo Katai, Kiyonori Hinoki, Yousuke Miyaki
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Publication number: 20100247792Abstract: A liquid application apparatus includes a guide roll for guiding a sheet for application, and a slit die for applying a liquid to a surface of the sheet for application from an opening. The slit die has an upper layer flow path and a lower layer flow path spaced in the rotational direction of the guide roll and joining at the opening. In a cross section perpendicular to the axis of the guide roll, an angle ? formed by the center line of the upper layer flow path and the center line of the lower layer flow path is 0.Type: ApplicationFiled: March 16, 2010Publication date: September 30, 2010Applicant: TDK CORPORATIONInventors: Kazutoshi EMOTO, Kiyonori HINOKI, Masahiro SAEGUSA, Haruka NISHIMURA
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Publication number: 20100248026Abstract: An electrode for a lithium ion secondary battery having a collector, an active-material layer formed on the collector and a protecting layer formed on the active-material layer, in which the protecting layer contains an organic particle formed of poly(methyl methacrylate) having a crosslinked structure, and the organic particle has an average particle size (D50) of 0.5 to 4.0 ?m.Type: ApplicationFiled: March 19, 2010Publication date: September 30, 2010Applicant: TDK CorporationInventors: Kiyonori HINOKI, Kazutoshi EMOTO, Haruka NISHIMURA, Masahiro SAEGUSA
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Publication number: 20100124705Abstract: A fiber-containing polymer film contains a host polymer and fibrous substances. The fiber-containing polymer film has an orientation area where the fibrous substances are oriented in a direction substantially parallel to a main surface of the fiber-containing polymer film and in substantially the same direction.Type: ApplicationFiled: November 16, 2009Publication date: May 20, 2010Applicant: TDK CORPORATIONInventors: Katsuo NAOI, Kazutoshi EMOTO, Kiyonori HINOKI, Masahiro SAEGUSA, Kenji NISHIZAWA, Mitsuo KOUGO
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Publication number: 20100075023Abstract: An electrode manufacturing apparatus comprises a conveying section for conveying a current collector sheet having a plurality of through holes; a backup roll for guiding the conveyed current collector sheet; an applicator for supplying a coating liquid to the current collector sheet on the backup roll; and a nip roll for pressing a part of the current collector sheet where the coating liquid is not supplied yet from the applicator against the backup roll.Type: ApplicationFiled: September 16, 2009Publication date: March 25, 2010Applicant: TDK CORPORATIONInventors: Kazutoshi EMOTO, Katsuo NAOI, Kiyonori HINOKI, Masayoshi HIRANO
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Publication number: 20100075224Abstract: An electrode has a current collector having a plurality of through holes, and active material layers provided on both sides of the current collector, the current collector has projections extending on the top side or on the back side of the current collector from respective edges of the through holes, and an angle between each of the projections and a surface direction of the current collector is in the range of 30 to 80°. Because of the configuration wherein the projections are surrounded by the active material layers, a physical anchor effect is achieved so as to provide high adhesion. Since the projections are inclined relative to the surface direction of the current collector, the distance becomes shorter between the current collector including the projections and an active material, which was located apart from the projections in the case where the projections extended perpendicularly to the surface direction of the current collector.Type: ApplicationFiled: September 16, 2009Publication date: March 25, 2010Applicant: TDK CORPORATIONInventors: Katsuo NAOI, Kazutoshi EMOTO, Kiyonori HINOKI, Masahiro SAEGUSA, Kenji NISHIZAWA, Mitsuo KOUGO
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Publication number: 20100075022Abstract: The present invention provides an electrode producing method capable of uniformly depositing a coating solution on a sheet with projections on a surface. An electrode producing method by an electrode producing apparatus 100 has an inclining step of pressing a surface of a current collector sheet 2A with projections 4a extending outwardly from the surface, which is conveyed in a definite direction, to incline the projections 4a in a direction opposite to the definite direction of the current collector sheet 2A; and an applying step of applying a coating solution 3A onto the current collector sheet 2A the projections of which have been inclined in the inclining step and which is conveyed in the definite direction, by a slit die 12. After the surface of the current collector sheet 2A is pressed to incline the projections 4a on the sheet surface in the opposite direction to the conveyance direction, the coating solution 3A is applied onto the surface.Type: ApplicationFiled: September 16, 2009Publication date: March 25, 2010Applicant: TDK CORPORATIONInventors: Kazutoshi EMOTO, Katsuo NAOI, Kiyonori HINOKI, Masahiro SAEGUSA, Masayoshi HIRANO
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Publication number: 20100055565Abstract: An electrode manufacturing method which can form a flat short-circuit prevention coating film (solid polyelectrolyte layer) having a uniform thickness and prevent short circuits from occurring in an electrochemical device is provided. The electrode manufacturing method comprises a first step of applying an active material layer coating material containing an active material particle, an active material layer binder, and a first solvent to a current collector so as to form a coating film made of the active material layer coating material; a second step of applying a second solvent to the coating film; and a third step of applying a solid polyelectrolyte layer coating material containing a solid polyelectrolyte, a solid polyelectrolyte layer binder, and a third solvent to the coating film coated with the second solvent.Type: ApplicationFiled: August 26, 2009Publication date: March 4, 2010Applicant: TDK CORPORATIONInventors: Katsuo NAOI, Kazutoshi EMOTO, Kiyonori HINOKI, Masahiro SAEGUSA, Kenji NISHIZAWA, Mitsuo KOUGO, Masayoshi HIRANO
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Publication number: 20100055301Abstract: An electrode manufacturing method which can lower the impedance of electrochemical devices is provided. The electrode manufacturing method comprises the steps of applying a coating material containing an active material particle, a binder, and a good solvent for the binder to a current collector, so as to form a coating film made of the coating material; removing the good solvent from the coating film; applying a poor solvent for the binder to the coating film having removed the good solvent; and pressing the coating film coated with the poor solvent.Type: ApplicationFiled: August 26, 2009Publication date: March 4, 2010Applicant: TDK CORPORATIONInventors: Katsuo NAOI, Kazutoshi EMOTO, Kiyonori HINOKI, Masahiro SAEGUSA, Kenji NISHIZAWA, Mitsuo KOUGO
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Publication number: 20080295765Abstract: A liquid applicator comprises a guide roll for guiding a sheet, and a slit die, having a slit with an opening extending in an axial direction of the guide roll, for applying a liquid to a surface of the sheet guided by the guide roll. On the rear side of the opening in a rotating direction of the guide roll, the slit die further includes a front lip having a concave surface corresponding to the guide roll. The front lip opposes the guide roll by such a length FA in the rotating direction RD of the guide roll as to have a central angle ? of 0.95° to 3.0° about an axis O of the guide roll.Type: ApplicationFiled: May 19, 2008Publication date: December 4, 2008Applicant: TDK CORPORATIONInventors: Kazutoshi EMOTO, Kazuo KATAI, Kiyonori HINOKI, Yousuke MIYAKI
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Patent number: 7303975Abstract: A method is provided for optimizing the physical characteristics of a coating solution for a polarizable electrode layer formed on a collector. A first step is carried out to prepare a coating solution that includes porous particles, a fluorine-based binder, a good solvent that dissolves said fluorine-based binder, and a poor solvent that does not dissolve said fluorine-based binder. A second step is carried out to coat a collector with said coating solution to form the polarizable electrode layer on the collector. The viscosity of said coating solution for the polarizable electrode layer is set to between 0.5 to 3.5 Pa·s and a weight ratio (GS/PS) of said good solvent (GS) and said poor solvent (PS) is set to between 60/40 to 80/20. The occurrence of cracks in the polarizable electrode layer and large nonuniformities in the thickness of the polarizable electrode layer can thus be prevented.Type: GrantFiled: May 16, 2006Date of Patent: December 4, 2007Assignee: TDK Corporation and Honda Motor Co., Ltd.Inventors: Kiyonori Hinoki, Tsuyoshi Ichiki, Kazutoshi Emoto, Takehiko Sasaki, Kenichi Murakami, Shigeki Oyama, Manabu Iwaida