Patents by Inventor Motoaki ARAKI
Motoaki ARAKI 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: 11591480Abstract: A method of manufacturing a solid electrolytic capacitor, including: a step (A) of providing a conjugated conductive polymer-containing dispersion by polymerizing, in a dispersion medium containing seed particles turned into protective colloid by a polyanion or in a dispersion medium containing the polyanion, a monomer for obtaining a conjugated conductive polymer; a step (B) of preparing a dispersion containing a morpholine compound and the conjugated conductive polymer by adding the morpholine compound to the conjugated conductive polymer-containing dispersion; a step (C) of causing the dispersion to adhere to a porous anode body formed of a valve metal having a dielectric film on a surface thereof; and a step (D) of forming a solid electrolyte layer by removing the dispersion medium from the dispersion containing the morpholine compound and the conjugated conductive polymer, the dispersion adhering to the porous anode body.Type: GrantFiled: May 9, 2018Date of Patent: February 28, 2023Assignee: SHOWA DENKO K.K.Inventors: Motoaki Araki, Takashi Okubo
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Publication number: 20210130628Abstract: A method of manufacturing a solid electrolytic capacitor, including: a step (A) of providing a conjugated conductive polymer-containing dispersion by polymerizing, in a dispersion medium containing seed particles turned into protective colloid by a polyanion or in a dispersion medium containing the polyanion, a monomer for obtaining a conjugated conductive polymer; a step (B) of preparing a dispersion containing a morpholine compound and the conjugated conductive polymer by adding the morpholine compound to the conjugated conductive polymer-containing dispersion; a step (C) of causing the dispersion to adhere to a porous anode body formed of a valve metal having a dielectric film on a surface thereof; and a step (D) of forming a solid electrolyte layer by removing the dispersion medium from the dispersion containing the morpholine compound and the conjugated conductive polymer, the dispersion adhering to the porous anode body.Type: ApplicationFiled: May 9, 2018Publication date: May 6, 2021Applicant: SHOWA DENKO K.K.Inventors: Motoaki ARAKI, Takashi OKUBO
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Patent number: 10563020Abstract: A method for producing a conductive polymer-containing dispersion, the method including a polymerization step of subjecting a monomer that is to be a constitutional unit of a conjugated conductive polymer to a polymerization reaction in a mixed solution containing the monomer, a polyanion, and a dispersion medium to produce a polymerized product; and a dispersion treatment step of performing a dispersion treatment on a reaction solution obtained in the polymerization step to prepare a dispersion of the polymerized product, wherein a dispersion medium is added one or more times at any point in time from after the polymerization step to during the dispersion treatment step to make a mass concentration (B) of the polymerized product in the dispersion after the dispersion treatment step lower than a mass concentration (A) of the polymerized product in the reaction solution.Type: GrantFiled: December 1, 2016Date of Patent: February 18, 2020Assignee: SHOWA DENKO K.K.Inventors: Miyo Fujita, Motoaki Araki, Takashi Ohkubo
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Patent number: 10563071Abstract: The present invention provides a method for producing a conductive polymer-containing dispersion, including: a polymerization step of polymerizing a monomer for obtaining a conjugated conductive polymer in a dispersion medium including the monomer and seed particles converted into a colloid protected by a polyanion.Type: GrantFiled: March 11, 2014Date of Patent: February 18, 2020Assignee: SHOWA DENKO K.K.Inventors: Yasuyuki Tagawa, Naoki Murata, Motoaki Araki, Takashi Ohkubo
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Publication number: 20190382580Abstract: A curable aqueous resin emulsion composition containing: 100 parts by mass of a (meth)acrylate epoxy resin (a); from 1 to 200 parts by mass of a polymerizable unsaturated monomer (b); from 0.1 to 10 parts by mass of a curing accelerator (c); from 1 to 50 parts by mass of a reactive surfactant (d); from 10 to 2,000 parts by mass of water (e); a radical polymerization initiator (f); and at least one of a component (g) and a component (h) below: (g) at least one selected from inorganic particles and organic particles, and (h) at least one compound selected from an alkoxysilane compound, a metal alkoxy compound, a metal chelate compound, an epoxy compound, an isocyanate compound, and a triazine compound.Type: ApplicationFiled: January 22, 2018Publication date: December 19, 2019Applicant: SHOWA DENKO K.K.Inventors: Jun KUWAHARA, Kimihiko NAKAMURA, Hidekazu MUKUNO, Motoaki ARAKI
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Publication number: 20180371177Abstract: A method for producing a conductive polymer-containing dispersion, the method including a polymerization step of subjecting a monomer that is to be a constitutional unit of a conjugated conductive polymer to a polymerization reaction in a mixed solution containing the monomer, a polyanion, and a dispersion medium to produce a polymerized product; and a dispersion treatment step of performing a dispersion treatment on a reaction solution obtained in the polymerization step to prepare a dispersion of the polymerized product, wherein a dispersion medium is added one or more times at any point in time from after the polymerization step to during the dispersion treatment step to make a mass concentration (B) of the polymerized product in the dispersion after the dispersion treatment step lower than a mass concentration (A) of the polymerized product in the reaction solution.Type: ApplicationFiled: December 1, 2016Publication date: December 27, 2018Applicant: SHOWA DENKO K.K.Inventors: Miyo FUJITA, Motoaki ARAKI, Takashi OHKUBO
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Patent number: 9640325Abstract: A method for manufacturing a solid electrolytic capacitor, which includes the steps of: in a dispersion medium containing a monomer for obtaining a conjugated conductive polymer and a seed particle with protective colloid formed of a polyanion, polymerizing the monomer to obtain a conjugated conductive polymer-containing dispersion liquid; attaching the conjugated conductive polymer-containing dispersion liquid to the surface of a porous anode body at least having an anode body made of a valve metal and a dielectric film formed on the surface of the anode body; and removing a part or all of the dispersion medium from the conjugated conductive polymer-containing dispersion liquid attached to the porous anode body to form a solid electrolyte layer. Also disclosed is a solid electrolytic capacitor obtained by the method.Type: GrantFiled: April 4, 2014Date of Patent: May 2, 2017Assignee: SHOWA DENKO K.K.Inventors: Yasuyuki Tagawa, Naoki Murata, Motoaki Araki, Takashi Ohkubo
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Publication number: 20160055981Abstract: A method for manufacturing a solid electrolytic capacitor, which includes the steps of: in a dispersion medium containing a monomer for obtaining a conjugated conductive polymer and a seed particle with protective colloid formed of a polyanion, polymerizing the monomer to obtain a conjugated conductive polymer-containing dispersion liquid; attaching the conjugated conductive polymer-containing dispersion liquid to the surface of a porous anode body at least having an anode body made of a valve metal and a dielectric film formed on the surface of the anode body; and removing a part or all of the dispersion medium from the conjugated conductive polymer-containing dispersion liquid attached to the porous anode body to form a solid electrolyte layer. Also disclosed is a solid electrolytic capacitor obtained by the method.Type: ApplicationFiled: April 4, 2014Publication date: February 25, 2016Applicant: SHOWA DENKO K.K.Inventors: Yasuyuki TAGAWA, Naoki MURATA, Motoaki ARAKI, Takashi OHKUBO
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Publication number: 20160024315Abstract: The present invention provides a method for producing a conductive polymer-containing dispersion, including: a polymerization step of polymerizing a monomer for obtaining a conjugated conductive polymer in a dispersion medium including the monomer and seed particles converted into a protective colloid by a polyanion.Type: ApplicationFiled: March 11, 2014Publication date: January 28, 2016Applicant: SHOWA DENKO K.K.Inventors: Yasuyuki TAGAWA, Naoki MURATA, Motoaki ARAKI, Takashi OHKUBO