Patents by Inventor Hirofumi Iisaka
Hirofumi Iisaka 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: 11702752Abstract: A method that forms a metal plating film having a thick film thickness by a solid phase method is provided. The present disclosure is a method that forms the metal plating films of a first metal and a second metal having an ionization tendency larger than an ionization tendency of the first metal. The method includes: depositing the second metal on a surface of a copper base material to form the plating film of the second metal; and depositing the first metal on a surface of the second metal by a solid electroless plating method to form the plating film of the first metal. The solid electroless plating method in the depositing of the first metal is performed using a laminated complex. The laminated complex includes a first substitution-type electroless plating bath, a solid electrolyte membrane, a copper base material, a third metal, a second substitution-type electroless plating bath, and an insulating polymer. The first substitution-type electroless plating bath contains ions of the first metal.Type: GrantFiled: August 31, 2020Date of Patent: July 18, 2023Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventor: Hirofumi Iisaka
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Patent number: 11421334Abstract: A tin solution applicable to tin film formation by solid electrolyte deposition, and a method for forming a tin film using the solution are provided. The tin solution contains tin methanesulfonate, methanesulfonic acid, water, an isopropyl alcohol, and a polyethylene-block-poly (ethylene glycol).Type: GrantFiled: October 21, 2019Date of Patent: August 23, 2022Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventor: Hirofumi Iisaka
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Publication number: 20220119956Abstract: A film forming method and a film forming apparatus of a metal plating film allowing suppressing damage of a porous film. A metal plating film on a surface of a metal substrate by solid substitution-type electroless plating method. The film forming method includes preparing the film forming apparatus that includes at least a bottom wall and a sidewall surrounding the bottom wall and that is provided with a housing space, the metal substrate disposed on the bottom surface inside the housing, the porous film disposed on the surface of the metal substrate, and an electroless plating solution housed in the housing space; and using the film forming apparatus, reducing metal ions derived from the electroless plating solution contained in the porous film, and depositing the metal ions on the surface of the metal substrate to form the metal plating film on the surface of the metal substrate.Type: ApplicationFiled: October 6, 2021Publication date: April 21, 2022Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventor: Hirofumi IISAKA
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Publication number: 20220033987Abstract: It is an object of the present disclosure to provide a method that allows uniformly forming a silver film by a solid electrolyte deposition. One aspect of this embodiment is a method for forming a silver film. The method includes disposing an anode, a substrate as a cathode, and a separator such that the separator is positioned between the anode and the substrate and the separator is in contact with a surface of the substrate, the separator including an electrolytic solution that contains silver ions, and applying a voltage between the anode and the substrate to form a silver film on the substrate. The separator is a porous membrane without ion exchange functional group. The electrolytic solution contains organic sulfonic acid ions. The substrate contains a crystalline metal, and a silver film is formed on the crystalline metal.Type: ApplicationFiled: June 3, 2021Publication date: February 3, 2022Inventor: Hirofumi IISAKA
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Patent number: 11230781Abstract: It is an object of the present disclosure to provide a method that allows uniformly forming a silver film by a solid electrolyte deposition. One aspect of this embodiment is a method for forming a silver film. The method includes disposing an anode, a substrate as a cathode, and a separator such that the separator is positioned between the anode and the substrate and the separator is in contact with a surface of the substrate, the separator including an electrolytic solution that contains silver ions, and applying a voltage between the anode and the substrate to form a silver film on the substrate. The separator is a porous membrane without ion exchange functional group. The electrolytic solution contains organic sulfonic acid ions. The substrate contains a crystalline metal, and a silver film is formed on the crystalline metal.Type: GrantFiled: June 3, 2021Date of Patent: January 25, 2022Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventor: Hirofumi Iisaka
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Patent number: 11035049Abstract: A solid electrolyte membrane is disposed between an anode and a substrate, and voltage is applied between the anode and the substrate while the solid electrolyte membrane is pressed onto the substrate so as to form a metal film on the substrate. In this film forming method, there is used the solid electrolyte membrane that includes: a first portion made of an ion permeable material; and a second portion made of a material having an electric insulating property and having a low permeability of metallic ions, the second portion being embedded in the first portion so as to be exposed from a surface of the solid electrolyte membrane, the surface of the solid electrolyte membrane facing the substrate.Type: GrantFiled: September 19, 2018Date of Patent: June 15, 2021Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventor: Hirofumi Iisaka
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Publication number: 20210079531Abstract: A method that forms a metal plating film having a thick film thickness by a solid phase method is provided. The present disclosure is a method that forms the metal plating films of a first metal and a second metal having an ionization tendency larger than an ionization tendency of the first metal. The method includes: depositing the second metal on a surface of a copper base material to form the plating film of the second metal; and depositing the first metal on a surface of the second metal by a solid electroless plating method to form the plating film of the first metal. The solid electroless plating method in the depositing of the first metal is performed using a laminated complex. The laminated complex includes a first substitution-type electroless plating bath, a solid electrolyte membrane, a copper base material, a third metal, a second substitution-type electroless plating bath, and an insulating polymer. The first substitution-type electroless plating bath contains ions of the first metal.Type: ApplicationFiled: August 31, 2020Publication date: March 18, 2021Inventor: Hirofumi IISAKA
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Publication number: 20200407866Abstract: Provided is a plating diaphragm used for a plating method including disposing the plating diaphragm between an anode and a substrate that is a cathode, applying a voltage between the anode and the substrate, in a state in which a surface of the substrate is in contact with the plating diaphragm, to reduce metal ions contained in the plating diaphragm, and depositing a metal derived from the metal ions on the surface of the substrate, to form a metal film on the surface of the substrate, the plating diaphragm containing a base made of a polyolefin porous membrane, in a case in which pure water is dropped on a surface of the plating diaphragm, a contact angle ? between a droplet of the pure water and the surface of the plating diaphragm after one second has passed since landing of the droplet of the pure water on the surface is from 0° to 90°, and a tensile breaking strength is from 11 MPa to 300 MPa.Type: ApplicationFiled: June 25, 2020Publication date: December 31, 2020Applicants: TEIJIN LIMITED, TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Yoshikazu IKUTA, Yu NAGAO, Hirofumi IISAKA
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Publication number: 20200407853Abstract: This disclosure provides a method for forming a plating film capable of suppressing deterioration of a plating solution, and a film formation device. The embodiment is a method for forming a metal plating film on a metal substrate by a substitution-type electroless plating method. The method includes bringing a porous film containing an electroless plating solution into contact with a surface of the metal substrate, and the porous film has an anionic group.Type: ApplicationFiled: June 22, 2020Publication date: December 31, 2020Inventor: Hirofumi IISAKA
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Patent number: 10760172Abstract: In a film forming method, in a state where a metal solution is sealed in a first accommodation chamber of a housing with a solid electrolyte membrane and a fluid is sealed in a second accommodation chamber of a placing table with a thin film, a substrate is placed on the placing table and the placing table and the housing are moved relative to each other to cause the substrate to be interposed between the solid electrolyte membrane and the thin film, the solid electrolyte membrane and the thin film are pressed against the substrate interposed therebetween to cause the solid electrolyte membrane and the thin film to conform to a surface and a rear surface of the substrate, thereby forming a metal film.Type: GrantFiled: April 26, 2019Date of Patent: September 1, 2020Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Yuki Sato, Motoki Hiraoka, Hirofumi Iisaka
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Publication number: 20200190685Abstract: A film forming device for forming a metal film at a high current efficiency and a method for forming the metal film using the film forming device are provided. The film forming device to form the metal film includes an anode, a cathode, a porous membrane disposed between the anode and the cathode to be capable of contacting the cathode, a solution container defining a solution containing space between the anode and the porous membrane, and a power supply applying a voltage between the anode and the cathode. The porous membrane is composed of a polyolefin chain without an ion-exchange functional group.Type: ApplicationFiled: October 21, 2019Publication date: June 18, 2020Inventor: Hirofumi IISAKA
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Publication number: 20200157697Abstract: A tin solution applicable to tin film formation by solid electrolyte deposition, and a method for forming a tin film using the solution are provided. The tin solution contains tin methanesulfonate, methanesulfonic acid, water, an isopropyl alcohol, and a polyethylene-block-poly (ethylene glycol).Type: ApplicationFiled: October 21, 2019Publication date: May 21, 2020Inventor: Hirofumi IISAKA
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Publication number: 20190368062Abstract: The present disclosure relates to a film-forming metal solution for use in a method in which a solid electrolyte membrane having sulfonic acid groups is disposed between an anode and a substrate serving as a cathode, the solid electrolyte membrane is brought into contact with the substrate, and a voltage is applied between the anode and the substrate to deposit a metal onto a surface of the substrate from metal ions supplied into the solid electrolyte membrane and thereby form a metal coating on the surface of the substrate, the film-forming metal solution being adapted to supply metal ions into the solid electrolyte membrane, wherein the film-forming metal solution comprises an aqueous metal solution, a solvent, and a nonionic surfactant, and the nonionic surfactant has a linear hydrophilic group having ethylene oxide units and a hydrophobic group having a cyclic structure and a maximum length of 40 ? or less.Type: ApplicationFiled: June 3, 2019Publication date: December 5, 2019Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventor: Hirofumi IISAKA
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Publication number: 20190249321Abstract: In a film forming method, in a state where a metal solution is sealed in a first accommodation chamber of a housing with a solid electrolyte membrane and a fluid is sealed in a second accommodation chamber of a placing table with a thin film, a substrate is placed on the placing table and the placing table and the housing are moved relative to each other to cause the substrate to be interposed between the solid electrolyte membrane and the thin film, the solid electrolyte membrane and the thin film are pressed against the substrate interposed therebetween to cause the solid electrolyte membrane and the thin film to conform to a surface and a rear surface of the substrate, thereby forming a metal film.Type: ApplicationFiled: April 26, 2019Publication date: August 15, 2019Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Yuki SATO, Motoki Hiraoka, Hirofumi IIsaka
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Patent number: 10337116Abstract: In a film forming method, in a state where a metal solution is sealed in a first accommodation chamber of a housing with a solid electrolyte membrane and a fluid is sealed in a second accommodation chamber of a placing table with a thin film, a substrate is placed on the placing table and the placing table and the housing are moved relative to each other to cause the substrate to be interposed between the solid electrolyte membrane and the thin film, the solid electrolyte membrane and the thin film are pressed against the substrate interposed therebetween to cause the solid electrolyte membrane and the thin film to conform to a surface and a rear surface of the substrate, thereby forming a metal film.Type: GrantFiled: May 17, 2017Date of Patent: July 2, 2019Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Yuki Sato, Motoki Hiraoka, Hirofumi Iisaka
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Publication number: 20190093247Abstract: A solid electrolyte membrane is disposed between an anode and a substrate, and voltage is applied between the anode and the substrate while the solid electrolyte membrane is pressed onto the substrate so as to form a metal film on the substrate. In this film forming method, there is used the solid electrolyte membrane that includes: a first portion made of an ion permeable material; and a second portion made of a material having an electric insulating property and having a low permeability of metallic ions, the second portion being embedded in the first portion so as to be exposed from a surface of the solid electrolyte membrane, the surface of the solid electrolyte membrane facing the substrate.Type: ApplicationFiled: September 19, 2018Publication date: March 28, 2019Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventor: Hirofumi IISAKA
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Publication number: 20170335479Abstract: In a film forming method, in a state where a metal solution is sealed in a first accommodation chamber of a housing with a solid electrolyte membrane and a fluid is sealed in a second accommodation chamber of a placing table with a thin film, a substrate is placed on the placing table and the placing table and the housing are moved relative to each other to cause the substrate to be interposed between the solid electrolyte membrane and the thin film, the solid electrolyte membrane and the thin film are pressed against the substrate interposed therebetween to cause the solid electrolyte membrane and the thin film to conform to a surface and a rear surface of the substrate, thereby forming a metal film.Type: ApplicationFiled: May 17, 2017Publication date: November 23, 2017Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Yuki SATO, Motoki HIRAOKA, Hirofumi IISAKA
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Patent number: 9368849Abstract: The present invention is to provide a carbonaceous material for lithium-air battery cathodes, which shows higher capacity than conventional carbonaceous materials. Disclosed are a carbonaceous material for lithium-air battery cathodes, wherein the carbonaceous material is a carbonaceous material for constituting the cathode of a lithium-air battery; wherein the carbonaceous material comprises nitrogen and a molar ratio of the nitrogen to the carbon is 1.9×10?2 or more; and wherein the carbonaceous material is a glassy material, and a lithium-air battery comprising a cathode, wherein the cathode comprises the carbonaceous material.Type: GrantFiled: September 30, 2013Date of Patent: June 14, 2016Assignee: NISSHINBO HOLDINGS INC.Inventors: Hirofumi Iisaka, Takeaki Kishimoto
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Publication number: 20150288040Abstract: The present invention is to provide a carbonaceous material for lithium-air battery cathodes, which shows higher capacity than conventional carbonaceous materials. Disclosed are a carbonaceous material for lithium-air battery cathodes, wherein the carbonaceous material is a carbonaceous material for constituting the cathode of a lithium-air battery; wherein the carbonaceous material comprises nitrogen and a molar ratio of the nitrogen to the carbon is 1.9×10?2 or more; and wherein the carbonaceous material is a glassy material, and a lithium-air battery comprising a cathode, wherein the cathode comprises the carbonaceous material.Type: ApplicationFiled: September 30, 2013Publication date: October 8, 2015Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, NISSHINBO HOLDINGS INC.Inventors: Hirofumi Iisaka, Takeaki Kishimoto
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Publication number: 20150229012Abstract: The present invention is to provide a carbonaceous material for the air electrode of an air battery, which has more oxygen reduction reaction initiating points than conventional carbonaceous materials, and an air battery including the carbonaceous material. Presented is a carbonaceous material for use in an air electrode of an air battery, wherein an average aspect ratio of the carbonaceous material is 1 or more and less than 10, and an edge area of a surface of the carbonaceous material is 55 m2/g or more.Type: ApplicationFiled: September 9, 2013Publication date: August 13, 2015Inventors: Masahiro Toyoda, Hirofumi Iisaka