Patents by Inventor Junpei Terada
Junpei Terada 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: 11963297Abstract: A fluororesin composition containing a melt moldable fluororesin and a silica, wherein the fluororesin has 25 or more carbonyl group-containing functional groups per 106 main-chain carbon atoms; the silica is a spherical silica; and the fluororesin composition has a linear expansion coefficient of 100 ppm/° C. or lower. Also disclosed is a fluororesin sheet including the fluororesin composition, a laminate including a copper foil layer and a layer including the fluororesin composition and a substrate for circuits including a copper foil layer and a layer including the fluororesin composition.Type: GrantFiled: December 24, 2019Date of Patent: April 16, 2024Assignee: DAIKIN INDUSTRIES, LTD.Inventors: Hirokazu Komori, Hiroyuki Yoshimoto, Masaji Komori, Yuki Ueda, Junpei Terada
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Patent number: 11866570Abstract: A molded body which is formed from a shaping material containing a fluororesin powder. The fluororesin powder has a D50 of 30 ?m or more and 200 ?m or less and a D10 of 12 ?m or more. Also disclosed is a method for forming a molded body from a shaping material containing the fluororesin powder, the method including controlling the temperature of the fluororesin powder; and irradiating the fluororesin powder with a laser at the controlled temperature to fuse the same.Type: GrantFiled: January 9, 2023Date of Patent: January 9, 2024Assignee: DAIKIN INDUSTRIES, LTD.Inventors: Hirokazu Komori, Junpei Terada, Hiroyuki Sendan, Tadahiro Yabu, Yukihiro Fukagawa, Kenta Murayama, Tomohiro Shiromaru, Toshio Miyatani, Masahiro Kondou, Hiroyuki Hamada
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Publication number: 20230395804Abstract: A method for producing a solid-state secondary battery sheet, which includes: (1) preparing a composition for producing a secondary battery sheet by using a binder that is a powder which comprises a polytetrafluoroethylene resin and a conductive aid homogeneously mixed and which is free of an active material, and (2) preparing the composition into a sheet by applying shear stress to the composition in solvent content of 10% mass or less relative to the composition. Also disclosed is a binder for a solid-state secondary battery, that is a powder which is composed of a composition essentially including a polytetrafluoroethylene resin and a conductive aid in a weight ratio proportion of 90:10 to 65:35 and which is free of an electrode active material. Also disclosed is a binder for a solid-state secondary battery electrode including a mixed powder of a polytetrafluoroethylene resin and ketjen black and/or a carbon nanotube.Type: ApplicationFiled: July 31, 2023Publication date: December 7, 2023Applicant: DAIKIN INDUSTRIES, LTD.Inventors: Takaya Yamada, Masahiko Yamada, Kentarou Hiraga, Xianwei Sui, Junpei Terada, Kae Fujiwara, Seika Fujioka, Katsusada Tokuhira, Ryouta Usami
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Publication number: 20230378471Abstract: A binder containing a mixed powder including a polytetrafluoroethylene resin and a single-walled carbon nanotube. A weight ratio of the polytetrafluoroethylene resin to the single-walled carbon nanotube is 99.9:0.1 to 80:20. Also disclosed is a composition for producing an electrode in a form of a powder including the binder and an electrode active material substantially free of a liquid medium; an electrode mixture including the composition for producing an electrode; an electrode using the electrode mixture; a secondary battery having the electrode; a method for producing the binder; and a method for producing the electrode.Type: ApplicationFiled: July 31, 2023Publication date: November 23, 2023Applicants: DAIKIN INDUSTRIES, LTD., MCD Technologies S.a.r.l.Inventors: Kae Fujiwara, Takaya Yamada, Chihiro Shinoda, Junpei Terada, Masahiko Yamada, Shigeaki Yamazaki, Mikhail Rudolfovich Predtechenskiy, Oleg Filippovich Bobrenok
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Publication number: 20230378470Abstract: A method for producing a secondary battery electrode using a non-aqueous electrolyte, which includes: (1) preparing a composition for producing an electrode substantially free of a liquid medium by using a binder that is a powder which is composed of a composition essentially including a polytetrafluoroethylene resin and a conductive aid and which is free of an active material, and (2) preparing the composition into a sheet by applying shear stress to the composition in solvent content of 10% mass or less relative to the composition. Also disclosed is a binder for a secondary battery electrode using a non-aqueous electrolyte, that is a powder which is composed of a composition essentially including a polytetrafluoroethylene resin and a conductive aid in a proportion of 90:10 to 65:35 in terms of weight ratio and which is free of an electrode active material.Type: ApplicationFiled: July 31, 2023Publication date: November 23, 2023Applicant: DAIKIN INDUSTRIES, LTD.Inventors: Takaya YAMADA, Masahiko Yamada, Kentarou Hiraga, Junpei Terada, Kae Fujiwara, Xianwei Sui, Katsusada Tokuhira, Ryouta Usami, Seika Fujioka
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Publication number: 20230363090Abstract: A fluororesin film including a fluorine-containing composition, wherein the oxygen element percentage as measured when heat treatment is performed at 180° C. for 3 minutes and then the state of one or both surfaces of the film is observed by scanning X-ray photoelectron spectroscopy (XPS/ESCA) is 1.35 atom % or more, and an absolute value of the rate of dimensional change in MD and TD before and after heat treatment as measured when the film is heat-treated at 180° C. for 10 minutes and then cooled to room temperature is 2% or less. Also disclosed is a copper-clad laminate, including copper foil and the fluororesin film; a substrate for circuit, including the copper-clad laminate; and a method for producing the copper-clad laminate.Type: ApplicationFiled: July 17, 2023Publication date: November 9, 2023Applicant: DAIKIN INDUSTRIES, LTD.Inventors: Hirokazu KOMORI, Tatsuya Higuchi, Kenzo Takahashi, Masahiko Kawamura, Koji Yokotani, Junpei Terada, Nobuyuki Komatsu
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Patent number: 11781002Abstract: A fluorine-containing elastomer composition for a heat dissipation material, including a fluorine-containing elastomer being VdF-based fluoroelastomer having a Mooney viscosity at 121° C. of 10 or lower and an insulating thermal conductive filler. Also disclosed is a sheet obtained by molding the fluorine-containing elastomer composition.Type: GrantFiled: October 30, 2018Date of Patent: October 10, 2023Assignee: DAIKIN INDUSTRIES, LTD.Inventors: Hiroyuki Sagami, Junpei Terada, Hiroshi Aihara, Takayuki Matsuo
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Publication number: 20230231182Abstract: An all-solid-state secondary battery mixture, a secondary battery electrode mixture sheet containing the all-solid-state secondary battery mixture, and a secondary battery including the all-solid-state secondary battery sheet. Also provided is a method for producing an all-solid-state secondary battery sheet containing a polytetrafluoroethylene resin having a fine fiber structure. The all-solid-state secondary battery mixture includes a solid-state electrolyte and a binder. The binder is a polytetrafluoroethylene resin, and the polytetrafluoroethylene resin has a fibrous structure with a fibril diameter (median value) of 70 nm or less. In addition, the all-solid-state secondary battery mixture sheet contains the all-solid-state secondary battery mixture.Type: ApplicationFiled: February 28, 2023Publication date: July 20, 2023Applicant: DAIKIN INDUSTRIES, LTD.Inventors: Takaya YAMADA, Masahiko YAMADA, Shigeaki YAMAZAKI, Junpei TERADA, Kae FUJIWARA, Kentarou HIRAGA, Xianwei SUI
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Publication number: 20230223542Abstract: An oxide-based solid-state secondary battery and a binder for a solid-state secondary battery using an oxide-based solid electrolyte that contains a fluorine-containing polymer including a vinylidene fluoride unit and a fluorinated monomer unit other than the vinylidene fluoride unit. The fluorinated monomer unit is at least one copolymerization unit (A) selected from a monomer unit having a structure represented by formula (1) and a monomer unit having a structure represented by formula (2): wherein Rf1 and Rf2are each a linear or branched fluorinated alkyl or fluorinated alkoxy group with 1 to 12 carbon atoms, which optionally contains an oxygen atom between carbon-carbon atoms when the number of carbon atoms is 2 or more.Type: ApplicationFiled: March 8, 2023Publication date: July 13, 2023Applicant: DAIKIN INDUSTRIES, LTD.Inventors: Kae FUJIWARA, Takaya YAMADA, Takahiro FURUTANI, Junpei TERADA
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Publication number: 20230207821Abstract: A secondary battery electrode mixture, a secondary battery electrode mixture sheet containing the electrode mixture, and a secondary battery including the secondary battery electrode mixture sheet. Also provided is a method for producing an electrode mixture sheet containing a polytetrafluoroethylene resin having a fine fiber structure. The secondary battery electrode mixture includes an electrode active material and a binder. The binder is a polytetrafluoroethylene resin, and the polytetrafluoroethylene resin has a fibrous structure with a fibril diameter (median value) of 70 nm or less. In addition, the secondary battery electrode mixture sheet contains the electrode mixture.Type: ApplicationFiled: February 28, 2023Publication date: June 29, 2023Applicant: DAIKIN INDUSTRIES, LTD.Inventors: Takaya Yamada, Masahiko Yamada, Shigeaki Yamazaki, Junpei Terada, Kae Fujiwara, Kentarou Hiraga, Xianwei Sui
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Publication number: 20230197967Abstract: Provided is a binder for a battery, including a fluorine-containing copolymer, wherein the fluorine-containing copolymer comprises a repeating unit (a) based on vinylidene fluoride and at least one repeating unit (b) selected from the group consisting of a repeating unit (bl) represented by a specific structural formula (bl) and a repeating unit (b2) represented by a structural formula (b2), and the fluorine-containing copolymer has a molar ratio of the repeating unit (a) to the repeating unit (b), (a)/(b), of 95/5 to 5/95.Type: ApplicationFiled: February 7, 2023Publication date: June 22, 2023Applicant: DAIKIN INDUSTRIES, LTD.Inventors: Junpei TERADA, Yuma Ichinose, Chihiro Hosoda, Takahiro Furutani, Shigeaki Yamazaki
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Publication number: 20230187694Abstract: A composite containing a fluorine-containing copolymer, an alkali metal salt, and an ionic liquid. The fluorine-containing copolymer essentially contains: a structural unit represented by formula (1): —[CR1R2—CR3R4]— wherein R1 to R4 are each independently H, F, Cl, CF3, or OR10, where R10 is an organic group having 1 to 8 carbon atoms, provided that at least one of R1 to R4 is F; and a structural unit represented by formula (2): —[CR5R6—CR7R8]— wherein R5 to R8 are each independently H, F, an alkyl group having 1 to 3 carbon atoms, a functional group containing a heteroatom other than the fluorine atom, or a group containing the functional group. At least one of R5 to R8 is a functional group containing a heteroatom other than the fluorine atom or a group containing the functional group, and the composite has a volatile content of 0.1 mass % or less.Type: ApplicationFiled: April 28, 2021Publication date: June 15, 2023Applicant: DAIKIN INDUSTRIES, LTD.Inventors: Akinori TANI, Junpei TERADA, Takaya YAMADA, Kae FUJWARA
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Publication number: 20230178802Abstract: Provided are a composite that can be suitably used as an electrolyte in polymer-based solid-state batteries, and various electrochemical devices using the composite. The composite includes a fluorine-containing elastomer and an alkali metal salt as essential components, wherein the fluorine-containing elastomer is an amorphous fluorine-containing elastomer having a glass transition temperature of 25° C. or less, and the composite has a volatile content of 0.1 mass % or less with respect to the entire composite.Type: ApplicationFiled: April 28, 2021Publication date: June 8, 2023Applicant: DAIKIN INDUSTRIES, LTD.Inventors: Akinori TANI, Junpei TERADA, Takaya YAMADA, Kae FUJIWARA
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Publication number: 20230167269Abstract: A molded body which is formed from a shaping material containing a fluororesin powder. The fluororesin powder has a D50 of 30 µm or more and 200 µm or less and a D10 of 12 µm or more. Also disclosed is a method for forming a molded body from a shaping material containing the fluororesin powder, the method including controlling the temperature of the fluororesin powder; and irradiating the fluororesin powder with a laser at the controlled temperature to fuse the same.Type: ApplicationFiled: January 9, 2023Publication date: June 1, 2023Applicant: DAIKIN INDUSTRIES, LTD.Inventors: Hirokazu KOMORI, Junpei Terada, Hiroyuki Sendan, Tadahiro Yabu, Yukihiro Fukagawa, Kenta Murayama, Tomohiro Shiromaru, Toshio Miyatani, Masahiro Kondou, Hiroyuki Hamada
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Publication number: 20230133748Abstract: A three-dimensional shaped object including a fluororesin, wherein the three-dimensional shaped object is a laminate of a layer according to the slice data of the three-dimensional structure. The three-dimensional shaped object has a tensile stress at break of 9 MPa or more, and a tensile elongation at break in the direction perpendicular to the shaped plane of 20% or more. Also disclosed is a method for producing the three-dimensional shaped object.Type: ApplicationFiled: December 30, 2022Publication date: May 4, 2023Applicant: DAIKIN INDUSTRIES, LTD.Inventors: Hirokazu KOMORI, Hiroyuki SENDAN, Yukihiro FUKAGAWA, Kenta MURAYAMA, Junpei TERADA
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Publication number: 20230069196Abstract: Provided are a composite that can be suitably used as an electrolyte for polymer-based solid-state batteries and is excellent in oxidation resistance and flame retardancy, and various electrochemical devices using such a composite. The composite contains a fluorine-containing copolymer that comprises a tetrafluoroethylene (TFE) unit and a vinylidene fluoride (VdF) unit, and an alkali metal salt, wherein the total content of the TFE unit and the VdF unit in the fluorine-containing copolymer is 1 to 99 mol %, and the composite has a volatile content of 0.1 mass % or less with respect to the entire composite.Type: ApplicationFiled: October 31, 2022Publication date: March 2, 2023Applicant: DAIKIN INDUSTRIES, LTD.Inventors: Akinori TANI, Junpei Terada, Takaya Yamada, Kae fujiwara
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Publication number: 20230052514Abstract: The present invention provides an oxide-based solid-state secondary battery which may be enlarged at a low cost and for which production costs are reduced. A binder for a solid-state secondary battery using an oxide-based solid-state electrolyte, wherein the binder contains a vinylidene fluoride unit and a fluorinated monomer unit excluding the vinylidene fluoride unit.Type: ApplicationFiled: December 15, 2020Publication date: February 16, 2023Applicant: DAIKIN INDUSTRIES, LTD.Inventors: Takaya YAMADA, Kae FUJIWARA, Chihiro SHINODA, Junpei TERADA
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Patent number: 11555098Abstract: A shaping material for a powder bed fusion method, including a powder of a fluororesin, wherein the fluororesin has a D50 of 30 ?m or more and 200 ?m or less, and the fluororesin has a D10 of 12 ?m or more.Type: GrantFiled: October 27, 2020Date of Patent: January 17, 2023Assignee: DAIKIN INDUSTRIES. LTD.Inventors: Hirokazu Komori, Junpei Terada, Hiroyuki Sendan, Tadahiro Yabu, Yukihiro Fukagawa, Kenta Murayama, Tomohiro Shiromaru, Toshio Miyatani, Masahiro Kondou, Hiroyuki Hamada
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Publication number: 20220376261Abstract: A composition for an electrochemical device, the composition containing a single-walled carbon nanotube, a binder and a solvent. The binder contains a fluorine-containing copolymer containing a vinylidene fluoride unit and a fluorinated monomer unit other than the vinylidene fluoride unit, and the content of the vinylidene fluoride unit in the fluorine-containing copolymer is 50.0 mol % or more relative to total monomer units. Also disclosed is a positive electrode mixture including the composition and a positive electrode structure including a current collector and the positive electrode mixture layer provided on one or both sides of the current collector.Type: ApplicationFiled: June 30, 2020Publication date: November 24, 2022Applicants: DAIKIN INDUSTRIES, LTD., MCD Technologies S.a.r.l.Inventors: Chihiro SHINODA, Takahiro KITAHARA, Junpei TERADA, Mikhail Rudolfovich PREDTECHENSKIY, Oleg Filippovich BOBRENOK
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Publication number: 20220271294Abstract: A binder and a slurry suitable for use in the production of an electrode in a sulfide-based solid-state battery. The binder contains sulfide-based solid electrolyte particles, and is a polymer including a vinylidene fluoride unit and at least one copolymerization unit (A) selected from a monomer unit having a structure represented by formula (1) below and a monomer unit having a structure represented by formula (2) below: where Rf1 and Rf2 are each a linear or branched fluorinated alkyl or fluorinated alkoxy group with 1 to 12 carbon atoms, which optionally contains an oxygen atom between carbon-carbon atoms when the number of carbon atoms is 2 or more. The slurry contains sulfide-based solid electrolyte particles, the binder and a solvent. Also disclosed is an electrode including an electrode active material layer formed using the slurry and a lithium-ion secondary solid state battery including the electrode.Type: ApplicationFiled: July 22, 2020Publication date: August 25, 2022Applicant: DAIKIN INDUSTRIES, LTD.Inventors: Takaya YAMADA, Junpei TERADA, Takahiro FURUTANI, Akinori TANI, Kae FUJIWARA