Patents by Inventor Takeshi Katoh
Takeshi Katoh 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: 11851777Abstract: There is provided a hydrogen gas mixing device, including: a water electrolysis part configured to generate a hydrogen gas and an oxygen gas by electrolysis of water; a mixing gas supply part configured to supply a mixing gas; and a gas mixing part configured to mix the hydrogen gas and the mixing gas, wherein a non-combustible dilution gas is introduced into an oxygen flow part of the water electrolysis part through which the oxygen gas flows.Type: GrantFiled: December 28, 2020Date of Patent: December 26, 2023Assignee: YAMAHA FINE TECHNOLOGIES CO., LTD.Inventors: Hisashi Ichinokiyama, Takeshi Katoh, Toru Ishii, Yukio Sasaki
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Patent number: 11619889Abstract: A two-component developer 100 includes a carrier 200 and a toner 300. The carrier 200 satisfies the relationships 100???220 and 300???480 when a voltage is applied in 1 V steps by a bridge resistance measurement method, where ? (V) is a carrier voltage value obtained when a current value flowing through the carrier 200 reaches 1.0?7 (A), and ? (V) is a carrier voltage value obtained when the current value reaches 1.0?5 (A).Type: GrantFiled: August 16, 2021Date of Patent: April 4, 2023Assignee: SHARP KABUSHIKI KAISHAInventors: Maiko Nagaoka, Yoritaka Tsubaki, Takeshi Katoh, Keiichi Kikawa
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Patent number: 11471841Abstract: There is provided a hydrogen gas mixing device that includes a hydrogen generation part configured to generate a hydrogen gas; a mixing gas supply part configured to supply a mixing gas; a gas mixing part configured to mix the hydrogen gas and the mixing gas; a dilution gas supply part configured to supply a non-combustible dilution gas; and a valve circuit configured to, at an abnormality occurrence time, dilute the hydrogen gas with the dilution gas by connecting a first path for the hydrogen gas supplied from the hydrogen generation part and a second path for the dilution gas supplied from the dilution gas supply part.Type: GrantFiled: December 28, 2020Date of Patent: October 18, 2022Assignee: YAMAHA FINE TECHNOLOGIES CO., LTD.Inventors: Hisashi Ichinokiyama, Takeshi Katoh, Toru Ishii, Yukio Sasaki
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Publication number: 20220066338Abstract: A two-component developer 100 includes a carrier 200 and a toner 300. The carrier 200 satisfies the relationships 100???220 and 300???480 when a voltage is applied in 1 V steps by a bridge resistance measurement method, where ? (V) is a carrier voltage value obtained when a current value flowing through the carrier 200 reaches 1.0?7 (A), and ? (V) is a carrier voltage value obtained when the current value reaches 1.0?5 (A).Type: ApplicationFiled: August 16, 2021Publication date: March 3, 2022Inventors: Maiko NAGAOKA, YORITAKA TSUBAKI, TAKESHI KATOH, KEIICHI KIKAWA
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Publication number: 20210214853Abstract: There is provided a hydrogen gas mixing device, including: a water electrolysis part configured to generate a hydrogen gas and an oxygen gas by electrolysis of water; a mixing gas supply part configured to supply a mixing gas; and a gas mixing part configured to mix the hydrogen gas and the mixing gas, wherein a non-combustible dilution gas is introduced into an oxygen flow part of the water electrolysis part through which the oxygen gas flows.Type: ApplicationFiled: December 28, 2020Publication date: July 15, 2021Inventors: Hisashi ICHINOKIYAMA, Takeshi KATOH, Toru ISHII, Yukio SASAKI
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Publication number: 20210213398Abstract: There is provided a hydrogen gas mixing device that includes a hydrogen generation part configured to generate a hydrogen gas; a mixing gas supply part configured to supply a mixing gas; a gas mixing part configured to mix the hydrogen gas and the mixing gas; a dilution gas supply part configured to supply a non-combustible dilution gas; and a valve circuit configured to, at an abnormality occurrence time, dilute the hydrogen gas with the dilution gas by connecting a first path for the hydrogen gas supplied from the hydrogen generation part and a second path for the dilution gas supplied from the dilution gas supply part.Type: ApplicationFiled: December 28, 2020Publication date: July 15, 2021Inventors: Hisashi ICHINOKIYAMA, Takeshi KATOH, Toru ISHII, Yukio SASAKI
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Patent number: 10732531Abstract: A toner contains at least a crystalline polyester resin and an amorphous linear polyester resin that uses diethylene glycol as an alcohol component, and a monoester wax and a montan ester wax as release agent components, wherein 6???8 and 14?mw/?<30 are satisfied, where ? represents an amount of the crystalline polyester resin added relative to 100 parts by weight of the amorphous linear polyester resin and mw represents an amount of the montan ester wax added.Type: GrantFiled: March 28, 2019Date of Patent: August 4, 2020Assignee: SHARP KABUSHIKI KAISHAInventors: Keiichi Kikawa, Yoritaka Tsubaki, Takeshi Katoh, Osamu Wada, Tadanori Kano, Yuya Kondo, Shoji Nakai, Hiroki Maeda
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Publication number: 20190317418Abstract: A toner contains at least a crystalline polyester resin and an amorphous linear polyester resin that uses diethylene glycol as an alcohol component, and a monoester wax and a montan ester wax as release agent components, wherein 6???8 and 14?mw/?<30 are satisfied, where ? represents an amount of the crystalline polyester resin added relative to 100 parts by weight of the amorphous linear polyester resin and mw represents an amount of the montan ester wax added.Type: ApplicationFiled: March 28, 2019Publication date: October 17, 2019Inventors: KEIICHI KIKAWA, YORITAKA TSUBAKI, TAKESHI KATOH, OSAMU WADA, TADANORI KANO, YUYA KONDO, SHOJI NAKAI, HIROKI MAEDA
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Publication number: 20170115589Abstract: The two-component developer constituted of a toner and carriers, wherein the toner contains a crystalline polyester resin, constituted of a linear saturated aliphatic polyester unit, dispersed in an amorphous polyester resin obtained by polymerizing a bivalent alcohol component monomer and a dicarboxylic acid as an acid component monomer; wherein the carriers have a magnetic property and have core particles covered with a covering layer containing at least a binder resin and aminopropyltriethoxysilane; and wherein an image of the magnetic carriers photographed by a scanning electron microscope shows the following features: a percentage of a total area of high-brightness parts derived from a metal oxide on the one magnetic carrier particle to a total projected area is 3.Type: ApplicationFiled: October 21, 2016Publication date: April 27, 2017Inventors: Shoji NAKAI, Takeshi KATOH, Yoritaka TSUBAKI
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Publication number: 20110236643Abstract: There is provided a display module comprising: a first component; a second component; and an adhesive layer formed between the first component and second component and in an outer peripheral area of both components, wherein the first component and second component are connected by the adhesive strength of the adhesive layer, and a closed space is formed by the first component, the second component and the adhesive layer, wherein the adhesive layer is made of a photo-curable adhesive resin composition which is cured and activates adhesiveness when irradiated with a light and sustains the adhesiveness, and the adhesive layer has such a thickness as to have translucency which allows the photo-curable adhesive resin composition to be cured with irradiation of a light from the direction between the first component and second component, and has such a width as to have a substantial light shielding property against transmission of a light in the adhesive layer in the direction between the closed space and an exterioType: ApplicationFiled: November 18, 2009Publication date: September 29, 2011Inventors: Mikihiko Tsubouchi, Satoshi Kurono, Tsuyoshi Yamamoto, Takeshi Katoh
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Patent number: 7601635Abstract: For improving the reliability of a semiconductor device having a stacked structure of a polycrystalline silicon film and a tungsten silicide film, the device is manufactured by forming a polycrystalline silicon film, a tungsten silicide film and an insulating film successively over a gate insulating film disposed over the main surface of a semiconductor substrate, and patterning them to form a gate electrode having a stacked structure consisting of the polycrystalline silicon film and tungsten silicide film. The polycrystalline silicon film has two regions, one region formed by an impurity-doped polycrystalline silicon and the other one formed by non-doped polycrystalline silicon. The tungsten silicide film is deposited so that the resistivity of it upon film formation would exceed 1000 ??cm.Type: GrantFiled: July 3, 2007Date of Patent: October 13, 2009Assignee: Renesas Technology Corp.Inventors: Kentaro Yamada, Masato Takahashi, Tatsuyuki Konagaya, Takeshi Katoh, Masaki Sakashita, Koichiro Takei, Yasuhiro Obara, Yoshio Fukayama
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Patent number: 7601475Abstract: A two-component developing agent containing a carrier which can maintain a charge-imparting property to a toner at a high level for a long period of time, does not generate flying of the carrier and can correspond to an image forming apparatus of present day having a long operation life and can form a high-quality image having high image density and sharpness, is provided. In the two-component developing agent containing a carrier in which a resin coating layer is formed on a surface of a core material, and a toner, in which an X-ray intensity of an alumina particle by a fluorescent X-ray analysis, the amount of the alumina particle to be used to the resin coating layer is adjusted such that it comes to be smaller than the X-ray intensity by the fluorescent X-ray analysis of a metal contained in a largest amount in the core material.Type: GrantFiled: September 12, 2006Date of Patent: October 13, 2009Assignee: Sharp Kabushiki KaishaInventors: Takeshi Katoh, Toshihisa Ishida, Yoshinori Urata, Kazuya Korematu, Takeshi Takayama, Mitsuhiro Hasegawa
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Publication number: 20090029279Abstract: A toner is provided which is capable of preventing a decrease in a toner charge amount and thus preventing fog and a decrease in image density even in a case where images of low coverage are continuously printed or where a printing operation restarts immediately after long suspension of operation in an image forming apparatus. The toner contains coloring resin particles formed of a boron compound, a hinder resin, and a colorant, and an external additive of which a primary particle is adjusted to have a size of 16 nm or more and 30 nm or less and of which a volume resistivity is adjusted to 1×1012 ?·cm or more and 5×1015 ?·cm or less.Type: ApplicationFiled: July 15, 2008Publication date: January 29, 2009Inventors: Takamichi Mori, Takeshi Katoh, Takeshi Tsukiyama
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Patent number: 7455945Abstract: A carrier excellent in durability and environmental stability and a two-component developing agent is provided. In the carrier, a core material is coated with a resin, and the coating resin is formed on the core material such that the coating resin comes to be in an amount of 5% by weight to 20% by weight on the basis of a weight of the core material, thereby enhancing durability. Further, the coating resin contains fine particles of titanium oxide, thereby enhancing environmental stability.Type: GrantFiled: June 6, 2005Date of Patent: November 25, 2008Assignee: Sharp Kabushiki KaishaInventors: Takeshi Katoh, Yoshinori Urata, Kazuya Korematu
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Patent number: 7393622Abstract: A durable two-component developing agent for electrophotography is provided that can not only suppress scattering of a toner into an inside of an apparatus but also obtain a high image density and can stably obtain a high-quality image even in use for a long period of time. The two-component developing agent for electrophotography includes a toner, and a carrier. The carrier contains a core material and a coating layer formed on a surface thereof. The coating layer is a silicone resin coating layer containing dendritic titanium oxide. Therefore, it is possible to not only suppress scattering of the toner but also obtain a sufficient image density and to form a high-quality image without reducing the image density even in use for a long period of time.Type: GrantFiled: June 2, 2005Date of Patent: July 1, 2008Assignee: Sharp Kabushiki KaishaInventors: Yoshinori Urata, Takeshi Katoh
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Publication number: 20070259512Abstract: For improving the reliability of a semiconductor device having a stacked structure of a polycrystalline silicon film and a tungsten silicide film, the device is manufactured by forming a polycrystalline silicon film, a tungsten silicide film and an insulating film successively over a gate insulating film disposed over the main surface of a semiconductor substrate, and patterning them to form a gate electrode having a stacked structure consisting of the polycrystalline silicon film and tungsten silicide film. The polycrystalline silicon film has two regions, one region formed by an impurity-doped polycrystalline silicon and the other one formed by non-doped polycrystalline silicon. The tungsten silicide film is deposited so that the resistivity of it upon film formation would exceed 1000 ??cm.Type: ApplicationFiled: July 3, 2007Publication date: November 8, 2007Inventors: Kentaro Yamada, Masato Takahashi, Tatsuyuki Konagaya, Takeshi Katoh, Masaki Sakashita, Koichiro Takei, Yasuhiro Obara, Yoshio Fukayama
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Patent number: 7256125Abstract: For improving the reliability of a semiconductor device having a stacked structure of a polycrystalline silicon film and a tungsten silicide film, the device is manufactured by forming a polycrystalline silicon film, a tungsten silicide film and an insulating film successively over a gate insulating film disposed over the main surface of a semiconductor substrate, and patterning them to form a gate electrode having a stacked structure consisting of the polycrystalline silicon film and tungsten silicide film. The polycrystalline silicon film has two regions, one region formed by an impurity-doped polycrystalline silicon and the other one formed by non-doped polycrystalline silicon. The tungsten silicide film is deposited so that the resistivity of it upon film formation would exceed 1000 ??cm.Type: GrantFiled: August 23, 2004Date of Patent: August 14, 2007Assignee: Renesas Technology Corp.Inventors: Kentaro Yamada, Masato Takahashi, Tatsuyuki Konagaya, Takeshi Katoh, Masaki Sakashita, Koichiro Takei, Yasuhiro Obara, Yoshio Fukayama
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Publication number: 20070059629Abstract: A two-component developing agent containing a carrier which can maintain a charge-imparting property to a toner at a high level for a long period of time, does not generate flying of the carrier and can correspond to an image forming apparatus of present day having a long operation life and can form a high-quality image having high image density and sharpness, is provided. In the two-component developing agent containing a carrier in which a resin coating layer is formed on a surface of a core material, and a toner, in which an X-ray intensity of an alumina particle by a fluorescent X-ray analysis, the amount of the alumina particle to be used to the resin coating layer is adjusted such that it comes to be smaller than the X-ray intensity by the fluorescent X-ray analysis of a metal contained in a largest amount in the core material.Type: ApplicationFiled: September 12, 2006Publication date: March 15, 2007Applicant: SHARP KABUSHIKI KAISHAInventors: Takeshi Katoh, Toshihisa Ishida, Yoshinori Urata, Kazuya Korematu, Takeshi Takayama, Mitsuhiro Hasegawa
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Publication number: 20050277049Abstract: A carrier excellent in durability and environmental stability and a two-component developing agent is provided. In the carrier, a core material is coated with a resin, and the coating resin is formed on the core material such that the coating resin comes to be in an amount of 5% by weight to 20% by weight on the basis of a weight of the core material, thereby enhancing durability. Further, the coating resin contains fine particles of titanium oxide, thereby enhancing environmental stability.Type: ApplicationFiled: June 6, 2005Publication date: December 15, 2005Applicant: Sharp Kabushiki KaishaInventors: Takeshi Katoh, Yoshinori Urata, Kazuya Korematu
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Publication number: 20050271966Abstract: A durable two-component developing agent for electrophotography is provided that can not only suppress scattering of a toner into an inside of an apparatus but also obtain a high image density and can stably obtain a high-quality image even in use for a long period of time. The two-component developing agent for electrophotography includes a toner, and a carrier. The carrier contains a core material and a coating layer formed on a surface thereof. The coating layer is a silicone resin coating layer containing dendritic titanium oxide. Therefore, it is possible to not only suppress scattering of the toner but also obtain a sufficient image density and to form a high-quality image without reducing the image density even in use for a long period of time.Type: ApplicationFiled: June 2, 2005Publication date: December 8, 2005Applicant: Sharp Kabushiki KaishaInventors: Yoshinori Urata, Takeshi Katoh