Patents by Inventor Takahiro Sakurai
Takahiro Sakurai 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: 10676308Abstract: Each of a first rotary blade and a second rotary blade includes a rough surface portion and a smooth surface portion. The rough surface portion has a predetermined width from a blade edge at its circumferential edge portion and has an arithmetical mean roughness of greater than 0.5. The smooth surface portion is provided radially inward of the rough surface portion and has an arithmetical mean roughness less than the arithmetical mean roughness of the rough surface portion.Type: GrantFiled: March 26, 2018Date of Patent: June 9, 2020Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventor: Takahiro Sakurai
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Patent number: 10644288Abstract: A separator-integrated electrode plate includes a current collector plate; an active material layer formed on the current collector plate; and a resin separator layer formed on the active material layer. A belt-like laser-cut end portion along a laser-cut edge that is laser-cut in a thickness direction of the separator-integrated electrode plate and forms part of a peripheral edge of the separator-integrated electrode plate has a resin-permeated portion in which a resin forming the resin separator layer permeates the active material layer over a width that is more than twice a thickness of the resin separator layer.Type: GrantFiled: November 10, 2017Date of Patent: May 5, 2020Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventor: Takahiro Sakurai
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Patent number: 10553910Abstract: A method of performing a formation process for a lithium-ion cell having an anode, a cathode, an electrolyte and a separator, the formation process including adding an additive to the electrolyte for improving a solid electrolyte interface build-up on the anode, performing a first charge of the cell at a first predetermined rate, performing a cycle of discharging/charging the cell at the first predetermined rate, repeating the cycle until a cycle maximum dQ/dV peak value is smaller than or equal to a predetermined dQ/dV value during charging of the cell and charging the cell to a fully charged capacity at a second predetermine rate, the second predetermined rate being greater than the first predetermined rate.Type: GrantFiled: March 25, 2016Date of Patent: February 4, 2020Assignees: TOYOTA MOTOR EUROPE, TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Takahiro Sakurai, Tomohide Sumi, Yoshio Matsuyama
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Publication number: 20190245250Abstract: A method of performing a formation process for a lithium-ion cell having an anode, a cathode, an electrolyte and a separator, the formation process including adding an additive to the electrolyte for improving a solid electrolyte interface build-up on the anode, performing a first charge of the cell at a first predetermined rate, performing a cycle of discharging/charging the cell at the first predetermined rate, repeating the cycle until a cycle maximum dQ/dV peak value is smaller than or equal to a predetermined dQ/dV value during charging of the cell and charging the cell to a fully charged capacity at a second predetermine rate, the second predetermined rate being greater than the first predetermined rate.Type: ApplicationFiled: March 25, 2016Publication date: August 8, 2019Applicants: Toyota Motor Europe, Toyota Jidosha Kabushiki KaishaInventors: Takahiro SAKURAI, Tomohide SUMI, Yoshio MATSUYAMA
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Publication number: 20190160596Abstract: Provided is an electrode sheet manufacturing apparatus that forms an electrode sheet by cutting a sheet stack including an electrode composite material layer and a separator provided on the electrode composite material layer. The electrode sheet manufacturing apparatus includes a laser irradiation device that irradiates the sheet stack with a first laser beam having a wavelength to be absorbed by the separator and a second laser beam having a wavelength to be absorbed by the electrode composite material layer, and a controller that controls driving of the laser irradiation device. The controller moves an irradiation position of the first laser beam relative to the sheet stack and moves an irradiation position of the second laser beam so as to follow a track of the irradiation position of the first laser beam.Type: ApplicationFiled: October 12, 2018Publication date: May 30, 2019Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventor: Takahiro SAKURAI
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Patent number: 10249907Abstract: Provided is a nonaqueous electrolyte secondary battery with better battery performance than in the past, by forming an SEI coat with very little non-uniformity on the surface of the negative electrode active material layer. The invention provides a nonaqueous electrolyte secondary battery in which an electrode assembly including a positive electrode, a separator, and a negative electrode, and a nonaqueous electrolyte are contained in a battery case. In this secondary battery, the nonaqueous electrolyte contains a crown ether that forms a complex with a sodium ion, and the negative electrode includes a negative current collector, a negative electrode active material layer containing a negative electrode active material formed on the surface of the current collector, and a coat including an oxalato complex structure and provided on at least part of the surface of the negative electrode active material layer.Type: GrantFiled: February 23, 2015Date of Patent: April 2, 2019Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Takahiro Sakurai, Hiroyasu Kado, Hirohiko Morikawa, Hisanao Kojima
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Publication number: 20180282105Abstract: Each of a first rotary blade and a second rotary blade includes a rough surface portion and a smooth surface portion. The rough surface portion has a predetermined width from a blade edge at its circumferential edge portion and has an arithmetical mean roughness of greater than 0.5. The smooth surface portion is provided radially inward of the rough surface portion and has an arithmetical mean roughness less than the arithmetical mean roughness of the rough surface portion.Type: ApplicationFiled: March 26, 2018Publication date: October 4, 2018Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventor: Takahiro SAKURAI
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Publication number: 20180138482Abstract: A separator-integrated electrode plate includes a current collector plate; an active material layer formed on the current collector plate; and a resin separator layer formed on the active material layer. A belt-like laser-cut end portion along a laser-cut edge that is laser-cut in a thickness direction of the separator-integrated electrode plate and forms part of a peripheral edge of the separator-integrated electrode plate has a resin-permeated portion in which a resin forming the resin separator layer permeates the active material layer over a width that is more than twice a thickness of the resin separator layer.Type: ApplicationFiled: November 10, 2017Publication date: May 17, 2018Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventor: Takahiro SAKURAI
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Patent number: 9944812Abstract: Provided is an ink composition having excellent printing properties and capable of forming a thick transparent conductive film with low surface resistivity even when it is used in gravure offset printing or pad printing. The ink composition contains (A) a conductive polymer, (B) a binder, and (C) a conductivity enhancer, wherein the composition has a viscosity at 25° C. of 5 to 500 dPa·s and a solids content of 10% to 80% by weight, and the composition exhibits a surface resistivity of 2000 ?/sq or lower and a total light transmittance of 70% or higher when applied at a wet film thickness of 15 ?m.Type: GrantFiled: February 6, 2015Date of Patent: April 17, 2018Assignee: Nagase ChemteX CorporationInventors: Tatsuya Ohori, Yasunori Kurushima, Takahiro Sakurai
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Publication number: 20170222263Abstract: Provided is a nonaqueous electrolyte secondary battery with better battery performance than in the past, by forming an SEI coat with very little non-uniformity on the surface of the negative electrode active material layer. The invention provides a nonaqueous electrolyte secondary battery in which an electrode assembly including a positive electrode, a separator, and a negative electrode, and a nonaqueous electrolyte are contained in a battery case. In this secondary battery, the nonaqueous electrolyte contains a crown ether that forms a complex with a sodium ion, and the negative electrode includes a negative current collector, a negative electrode active material layer containing a negative electrode active material formed on the surface of the current collector, and a coat including an oxalato complex structure and provided on at least part of the surface of the negative electrode active material layer.Type: ApplicationFiled: February 23, 2015Publication date: August 3, 2017Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Takahiro SAKURAI, Hiroyasu KADO, Hirohiko MORIKAWA, Hisanao KOJIMA
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Publication number: 20160196892Abstract: Provided is a conductive resin composition suitable for forming a transparent conductive film with good appearance and excellent transparency. The conductive resin composition includes: (A) a conductive polymer; (B) a conductivity enhancer; (C) a binder; and (D) a thickener, the composition having a viscosity at 25° C. of 50 to 8000 dPa·s, and containing the thickener (D) in an amount of less than 200 parts by weight per 100 parts by weight of solids of the conductive polymer (A).Type: ApplicationFiled: January 7, 2015Publication date: July 7, 2016Inventors: Tatsuya OHORI, Yasunori KURUSHIMA, Takashi HASEGAWA, Takahiro SAKURAI
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Publication number: 20160141086Abstract: A task is to provide an electromagnetic coil device capable of decreasing a surge voltage generated in an electromagnetic coil without providing a surge voltage decreasing diode. Provided are an electromagnetic coil in which a coil wire is wound; a first electric conductor installed around the electromagnetic coil, the first electric conductor being electrically insulated from the electromagnetic coil; and a second electric conductor installed in the first electric conductor or installed between the first electric conductor and the electromagnetic coil, the second electric conductor being electrically insulated from the electromagnetic coil, and being installed in such a manner as to have an eddy current flowing therethrough when a current flowing through the electromagnetic coil changes.Type: ApplicationFiled: July 16, 2014Publication date: May 19, 2016Applicants: Toyota Jidosha Kabushiki Kaisha, Toyota School FoundationInventors: Hiroshi OKADA, Hiroki KEINO, Takahiro SAKURAI, Takashi KOJIMA, Yunya MURAMATSU, Yoshiyuki HATTORI, Keisuke FUJISAKI
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Patent number: 9124082Abstract: A power cable termination for aerial connection houses an end of a power cable and a conductor extension rod connected to an end of a conductor of the cable in a bushing. The bushing is filled with an insulating filler. The insulating filler is composed of any one of: (1) a mixture of a silicone oil and a silicone rubber; (2) a mixture of a silicone oil and a silicone gel; and (3) a mixture of silicone oil, a silicone rubber and a silicone gel.Type: GrantFiled: October 5, 2010Date of Patent: September 1, 2015Assignees: VISCAS CORPORATION, FUJIKURA LTD., FURUKAWA ELECTRIC Co., LTD.Inventors: Anna Mori, Takahiro Sakurai, Shozo Kobayashi
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Publication number: 20150225589Abstract: Provided is an ink composition having excellent printing properties and capable of forming a thick transparent conductive film with low surface resistivity even when it is used in gravure offset printing or pad printing. The ink composition contains (A) a conductive polymer, (B) a binder, and (C) a conductivity enhancer, wherein the composition has a viscosity at 25° C. of 5 to 500 dPa·s and a solids content of 10% to 80% by weight, and the composition exhibits a surface resistivity of 2000 ?/sq or lower and a total light transmittance of 70% or higher when applied at a wet film thickness of 15 ?m.Type: ApplicationFiled: February 6, 2015Publication date: August 13, 2015Inventors: Tatsuya OHORI, Yasunori KURUSHIMA, Takahiro SAKURAI
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Patent number: 8603863Abstract: This IC card is provided with a module having an inlet, an adhesive layer covering the module, and a first base material and second base material sandwiching the module with interposition of the adhesive layer. The module is disposed on one face of the first base material with interposition of a viscous layer which has a thickness that varies according to the thickness at each area of the module, and its two ends are narrower than its other parts when viewed from the outer face side of the first base material or the outer face side of the second base material. According to this IC card, it is possible to offer the IC card with a flat surface, and without occurrence of strain in the embedded IC chip.Type: GrantFiled: February 24, 2012Date of Patent: December 10, 2013Assignee: Toppan Forms Co., Ltd.Inventors: Takahiro Sakurai, Yuichi Ito
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Publication number: 20120193142Abstract: A power cable termination for aerial connection houses an end of a power cable and a conductor extension rod connected to an end of a conductor of the cable in a bushing. The bushing is filled with an insulating filler. The insulating filler is composed of any one of: (1) a mixture of a silicone oil and a silicone rubber; (2) a mixture of a silicone oil and a silicone gel; and (3) a mixture of silicone oil, a silicone rubber and a silicone gel.Type: ApplicationFiled: October 5, 2010Publication date: August 2, 2012Applicants: VISCAS CORPORATION, FURUKAWA ELECTRIC CO., LTD., FUJIKURA LTD.Inventors: Anna Mori, Takahiro Sakurai, Shozo Kobayashi
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Patent number: 8208262Abstract: The window base material of the present invention is provided with an intermediate layer having a window section composed of transparent resin and a colored section composed of colored resin surrounding the window section, and a transparent first base material and second base material which sandwich the intermediate layer. The card with embedded module of the present invention is provided with a module having a display element, an adhesive layer covering the module, and a paired third base material and fourth base material which sandwich the module with interposition of the adhesive layer, wherein the third base material is composed of the window base material, and the display section of the display element is disposed so as to face the window section of the window base material.Type: GrantFiled: November 7, 2007Date of Patent: June 26, 2012Assignee: Toppan Forms Co., Ltd.Inventors: Takahiro Sakurai, Yuichi Ito
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Publication number: 20120156831Abstract: This IC card is provided with a module having an inlet, an adhesive layer covering the module, and a first base material and second base material sandwiching the module with interposition of the adhesive layer. The module is disposed on one face of the first base material with interposition of a viscous layer which has a thickness that varies according to the thickness at each area of the module, and its two ends are narrower than its other parts when viewed from the outer face side of the first base material or the outer face side of the second base material. According to this IC card, it is possible to offer the IC card with a flat surface, and without occurrence of strain in the embedded IC chip.Type: ApplicationFiled: February 24, 2012Publication date: June 21, 2012Applicant: TOPPAN FORMS CO., LTD.Inventors: Takahiro SAKURAI, Yuichi ITO
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Publication number: 20100085718Abstract: The window base material of the present invention is provided with an intermediate layer having a window section composed of transparent resin and a colored section composed of colored resin surrounding the window section, and a transparent first base material and second base material which sandwich the intermediate layer. The card with embedded module of the present invention is provided with a module having a display element, an adhesive layer covering the module, and a paired third base material and fourth base material which sandwich the module with interposition of the adhesive layer, wherein the third base material is composed of the window base material, and the display section of the display element is disposed so as to face the window section of the window base material.Type: ApplicationFiled: November 7, 2007Publication date: April 8, 2010Applicant: Toppan Forms Co., Ltd.Inventors: Takahiro Sakurai, Yuichi Ito
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Publication number: 20100059899Abstract: This IC card is provided with a module having an inlet, an adhesive layer covering the module, and a first base material and second base material sandwiching the module with interposition of the adhesive layer. The module is disposed on one face of the first base material with interposition of a viscous layer which has a thickness that varies according to the thickness at each area of the module, and its two ends are narrower than its other parts when viewed from the outer face side of the first base material or the outer face side of the second base material. According to this IC card, it is possible to offer the IC card with a flat surface, and without occurrence of strain in the embedded IC chip.Type: ApplicationFiled: November 7, 2007Publication date: March 11, 2010Applicant: TOPPAN FORMS CO., LTDInventors: Takahiro Sakurai, Yuichi Ito