Patents by Inventor Yasuo Ohta
Yasuo Ohta 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: 11982555Abstract: A thermal sensor device capable of maintaining measurement accuracy for a long period by suppressing plastic deformation due to thermal expansion of the heat generating resistor and reducing resistance change of the heat generating resistor, includes: a substrate having an opening; and a diaphragm having a structure in which a lower film, a heat generating resistor, and an upper film are stacked so as to bridge the opening, in which a film thickness of the lower film is larger than a film thickness of the upper film, an average thermal expansion coefficient of the lower film is larger than an average thermal expansion coefficient of the upper film, the lower film includes a plurality of films having different thermal expansion coefficients, and a film having a largest thermal expansion coefficient among the plurality of films is formed below a thickness center of the lower film.Type: GrantFiled: June 9, 2020Date of Patent: May 14, 2024Assignee: HITACHI ASTEMO, LTD.Inventors: Hiroshi Nakano, Masahiro Matsumoto, Yasuo Onose, Kazuhiro Ohta
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Patent number: 10283774Abstract: A bipolar electrode is composed of a first active material layer which is, for example, a positive electrode active material layer formed to include a first active material on one side of a collector, and a second active material layer which is, for example, a negative electrode active material layer formed to include a second active material with less compressive strength than that of the first active material on the other side of the collector. Then, a density adjusting additive which is an additive material with larger compressive strength than that of the second active material is included in the second active material layer.Type: GrantFiled: July 21, 2011Date of Patent: May 7, 2019Assignee: NISSAN MOTOR CO., LTD.Inventors: Masanobu Sato, Yasuo Ohta, Hideaki Horie, Masanori Aoyagi
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Patent number: 9666858Abstract: A negative electrode for a secondary battery according to the present invention has a collector and a negative electrode active material layer formed on a surface of the collector and containing negative electrode active material particles. In the negative electrode active material layer, an insulating material is arranged between the negative electrode active material particles so as not to develop conductivity by a percolation path throughout the negative electrode active material layer. It is possible in this configuration to effectively prevent the occurrence of a short-circuit current due to an internal short circuit and the generation of heat due to such short-circuit current flow in the secondary battery while securing the battery performance of the secondary battery.Type: GrantFiled: May 25, 2011Date of Patent: May 30, 2017Assignee: NISSAN MOTOR CO., LTD.Inventors: Kenji Ohara, Sohei Suga, Yasuo Ohta, Tomoya Kubota, Kazuyuki Sakamoto, Takaaki Abe, Satoru Ichikawa, Kenji Hosaka, Kosuke Hagiyama, Hiroshi Miyakubo
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Patent number: 9394638Abstract: A non-woven fabric which is excellent in thermal resistance, mechanical strength, and thermal dimensional stability for applications exposed to high temperature circumstance and has an extremely large surface area and exhibit an excellent filter performance is obtained. The non-woven fabric is composed of polyimide fibers which are obtained by polycondensation of at least an aromatic tetracarboxylic acid and an aromatic diamine having a benzoxazole structure and have a fiber diameter in the range of 0.001 ?m to 1 ?m. The non-woven fabric is obtained by the steps of preparing a polyamic acid by polycondensation of an aromatic tetracarboxylic acid and an aromatic diamine having a benzoxazole structure, and electro-spinning the polyamic acid to form a polyimide precursor non-woven fabric; and imidizing a polyimide precursor fiber bundle.Type: GrantFiled: June 19, 2007Date of Patent: July 19, 2016Assignee: Toyo Boseki Kabushiki KaishaInventors: Masahiko Nakamori, Satoshi Maeda, Tooru Kitagawa, Hisato Kobayashi, Yasuo Ohta
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Patent number: 9322106Abstract: An additive obtained from the reaction product obtained by reacting glutaraldehyde and at least one type of compound selected from hydrocarbon compounds containing a hydroxyl group, and at least one type of compound selected from amine compounds, as well as a tin or tin alloy plating solution containing this additive.Type: GrantFiled: May 18, 2013Date of Patent: April 26, 2016Inventors: Motoya Shimazu, Yasuo Ohta
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Patent number: 9023534Abstract: The present invention provides a fiber having a nano-order fiber diameter, which is produced by without a process of dehydration and cyclization by a heat treatment after fiber spinning and has excellent heat resistance and mechanical strength, and a non-woven fabric composed of the fiber, and discloses the polyamide-imide fiber and the non-woven fabric having an average fiber diameter of from 0.001 ?m to 1 ?m and also discloses the process for producing threrof. The present invention also provides a separator for an electronic component which has a high conductivity and a small separator thickness and is improved in safety during reflow soldering or short-circuiting, and discloses the separator composed of a non-woven fabric obtained by an electro-spinning method.Type: GrantFiled: July 27, 2006Date of Patent: May 5, 2015Assignee: Toyo Boseki Kabushiki KaishaInventors: Masahiko Nakamori, Yasuo Ohta, Hisato Kobayashi, Syoji Oda, Nobuyuki Taniguchi, Daisuke Sakura, Katsuya Shimeno
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Patent number: 8715861Abstract: A bipolar secondary battery is provided with an electric power generating unit, a pair of terminal plates. The electric power generating unit includes a plurality of bipolar electrodes stacked on one another with an electrolyte layer disposed between the bipolar electrodes and separating the bipolar electrodes. Each of the bipolar electrodes includes a collector with a positive electrode active material layer formed on a first side surface of the collector, and a negative electrode active material layer formed on a second side surface of the collector. The first terminal plate is connected to a first stacking direction facing end of the electric power generating unit. The second terminal plate is connected to a second stacking direction facing end of the electric power generating unit. At least one of the terminal plates includes an electric current suppressing device that suppresses an electric current occurring when an internal short circuit occurs in the electric power generating unit.Type: GrantFiled: October 19, 2009Date of Patent: May 6, 2014Assignee: Nissan Motor Co., Ltd.Inventors: Sohei Suga, Masanori Aoyagi, Kenji Ohara, Yasuo Ohta, Junji Katamura, Motoharu Obika, Kenji Hosaka, Hideaki Horie, Shigeo Watanabe
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Publication number: 20130270122Abstract: An additive obtained from the reaction product obtained by reacting glutaraldehyde and at least one type of compound selected from hydrocarbon compounds containing a hydroxyl group, and at least one type of compound selected from amine compounds, as well as a tin or tin alloy plating solution containing this additive.Type: ApplicationFiled: May 18, 2013Publication date: October 17, 2013Inventors: Motoya SHIMAZU, Yasuo OHTA
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Patent number: 8466314Abstract: An additive obtained from the reaction product obtained by reacting glutaraldehyde and at least one type of compound selected from hydrocarbon compounds containing a hydroxyl group, and at least one type of compound selected from amine compounds, as well as a tin or tin alloy plating solution containing this additive.Type: GrantFiled: April 26, 2011Date of Patent: June 18, 2013Assignee: Rohm and Haas Electronic Materials LLCInventors: Motoya Shimazu, Yasuo Ohta
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Publication number: 20130122362Abstract: A bipolar electrode is composed of a first active material layer which is, for example, a positive electrode active material layer formed to include a first active material on one side of a collector, and a second active material layer which is, for example, a negative electrode active material layer formed to include a second active material with less compressive strength than that of the first active material on the other side of the collector. Then, a density adjusting additive which is an additive material with larger compressive strength than that of the second active material is included in the second active material layer.Type: ApplicationFiled: July 21, 2011Publication date: May 16, 2013Inventors: Masanobu Sato, Yasuo Ohta, Hideaki Horie, Masanori Aoyagi
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Publication number: 20130071741Abstract: A negative electrode for a secondary battery according to the present invention has a collector and a negative electrode active material layer formed on a surface of the collector and containing negative electrode active material particles. In the negative electrode active material layer, an insulating material is arranged between the negative electrode active material particles so as not to develop conductivity by a percolation path throughout the negative electrode active material layer. It is possible in this configuration to effectively prevent the occurrence of a short-circuit current due to an internal short circuit and the generation of heat due to such short-circuit current flow in the secondary battery while securing the battery performance of the secondary battery.Type: ApplicationFiled: May 25, 2011Publication date: March 21, 2013Inventors: Kenji Ohara, Sohei Suga, Yasuo Ohta, Tomoya Kubota, Kazuyuki Sakamoto, Takaaki Abe, Satoru Ichikawa, Kenji Hosaka, Kosuke Hagiyama, Hiroshi Miyakubo
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Publication number: 20110259754Abstract: An additive obtained from the reaction product obtained by reacting glutaraldehyde and at least one type of compound selected from hydrocarbon compounds containing a hydroxyl group, and at least one type of compound selected from amine compounds, as well as a tin or tin alloy plating solution containing this additive.Type: ApplicationFiled: April 26, 2011Publication date: October 27, 2011Applicant: Rohm and Haas Electronic Materials LLCInventors: Motoya SHIMAZU, Yasuo Ohta
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Publication number: 20110183166Abstract: A bipolar secondary battery is provided with an electric power generating unit, a pair of terminal plates. The electric power generating unit includes a plurality of bipolar electrodes stacked on one another with an electrolyte layer disposed between the bipolar electrodes and separating the bipolar electrodes. Each of the bipolar electrodes includes a collector with a positive electrode active material layer formed on a first side surface of the collector, and a negative electrode active material layer formed on a second side surface of the collector. The first terminal plate is connected to a first stacking direction facing end of the electric power generating unit. The second terminal plate is connected to a second stacking direction facing end of the electric power generating unit. At least one of the terminal plates includes an electric current suppressing device that suppresses an electric current occurring when an internal short circuit occurs in the electric power generating unit.Type: ApplicationFiled: October 19, 2009Publication date: July 28, 2011Applicant: NISSAN MOTOR CO., LTD.Inventors: Sohei Suga, Masanori Aoyagi, Kenji Ohara, Yasuo Ohta, Junji Katamura, Motoharu Obika, Kenji Hosaka, Hideaki Horie, Shigeo WAatanabe
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Publication number: 20110098406Abstract: The present invention provides a method for producing a high strength polyethylene fiber superior in stretchability and having a higher strength, a higher elastic modulus and high productivity, and a high strength polyethylene fiber produced by the method. The method includes (1) dispersing a chemically surface modified carbon nanofiber in a solvent for an ultrahigh molecular weight polyethylene, (2) preparing a mixed dope comprising the polyethylene, the modified carbon nanofiber and the solvent by mixing the polyethylene with the suspension obtained in (1), wherein the concentration of the polyethylene is not less than 0.5 wt % and less than 50 wt %, and (3) extruding the dope obtained in step (2) through a spinneret, cooling the dope, and then stretching the dope into a filament yarn at a deformation rate of not less than 0.005 s?1 and not more than 0.5 s?1.Type: ApplicationFiled: July 8, 2009Publication date: April 28, 2011Applicant: Toyo Boseki Kabushiki KaishaInventors: Nobuyuki Taniguchi, Yasuo Ohta, Benjamin Chu, Benjamin S. Hsiao
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Patent number: 7931793Abstract: An additive obtained from the reaction product obtained by reacting glutaraldehyde and at least one type of compound selected from hydrocarbon compounds containing a hydroxyl group, and at least one type of compound selected from amine compounds, as well as a tin or tin alloy plating solution containing this additive.Type: GrantFiled: April 24, 2008Date of Patent: April 26, 2011Assignee: Rohm and Haas Electronic Materials LLCInventors: Motoya Shimazu, Yasuo Ohta
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Patent number: 7811673Abstract: To provide a novel high strength polyethylene multifilament which consists of a plurality of filaments having high strengths and uniform internal structures, and showing a narrow variation in the strengths of the monofilaments, and which has been difficult to be provided by the conventional gel spinning method. A high strength polyethylene multifilament consisting of a plurality of filaments which are characterized in that the crystal size of monoclinic crystal is 9 nm or less; the stress Raman shift factor is ?5.0 cm?1/(cN/dTex) or more; the average strength is 20 CN/dTex or higher; the knot strength retention of each monofilament is 40% or higher; CV indicating a variation in the strengths of the monofilaments is 25% or lower; the elongation at break is from 2.5% inclusive to 6.0% inclusive; the fineness of each filament is 10 dTex or less; and the melting point of the filaments is 145° C. or higher.Type: GrantFiled: March 12, 2004Date of Patent: October 12, 2010Assignee: Toyo Boseki Kabushiki KaishaInventors: Godo Sakamoto, Tooru Kitagawa, Yasuo Ohta, Yasunori Fukushima, Hiroki Murase
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Publication number: 20100178830Abstract: A non-woven fabric which is excellent in thermal resistance, mechanical strength, and thermal dimensional stability for applications exposed to high temperature circumstance and has an extremely large surface area and exhibit an excellent filter performance is obtained. The non-woven fabric is composed of polyimide fibers which are obtained by polycondensation of at least an aromatic tetracarboxylic acid and an aromatic diamine having a benzoxazole structure and have a fiber diameter in the range of 0.001 ?m to 1 ?m. The non-woven fabric is obtained by the steps of preparing a polyamic acid by polycondensation of an aromatic tetracarboxylic acid and an aromatic diamine having a benzoxazole structure, and electro-spinning the polyamic acid to form a polyimide precursor non-woven fabric; and imidizing a polyimide precursor fiber bundle.Type: ApplicationFiled: June 19, 2007Publication date: July 15, 2010Applicant: Toyo Boseki Kabushiki KaishaInventors: Masahiko Nakamori, Satoshi Maeda, Tooru Kitagawa, Hisato Kobayashi, Yasuo Ohta
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Publication number: 20100151333Abstract: The present invention provides a fiber having a nano-order fiber diameter, which is produced by without a process of dehydration and cyclization by a heat treatment after fiber spinning and has excellent heat resistance and mechanical strength, and a non-woven fabric composed of the fiber, and discloses the polyamide-imide fiber and the non-woven fabric having an average fiber diameter of from 0.001 ?m to 1 ?m and also discloses the process for producing threrof. The present invention also provides a separator for an electronic component which has a high conductivity and a small separator thickness and is improved in safety during reflow soldering or short-circuiting, and discloses the separator composed of a non-woven fabric obtained by an electro-spinning method.Type: ApplicationFiled: July 27, 2006Publication date: June 17, 2010Inventors: Masahiko Nakamori, Yasuo Ohta, Hisato Kobayashi, Syoji Oda, Nobuyuki Taniguchi, Daisuke Sakura, Katsuya Shimeno
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Publication number: 20100010186Abstract: The present invention provides a high strength polyethylene fiber having an intrinsic viscosity of from about 5 dL/g to 40 dL/g, and containing carbon nanofiber modified with alkyl chains. The fiber obtained by the production method of a high strength polyethylene fiber of the present invention is industrially applicable to a wide range and greatly contributes to the industry.Type: ApplicationFiled: July 8, 2008Publication date: January 14, 2010Applicants: TOYO BOSEKI KABUSHIKI KAISHA, THE RESEARCH FOUNDATION OF STATE UNIVERSITY OF NEW YORKInventors: Nobuyuki Taniguchi, Yasuo Ohta, Benjamin Chu, Benjamin S. Hsiao
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Publication number: 20100000873Abstract: A plating solution and a plating method, which does not use a complexing agent and which provides favorable solder wetting properties and an extremely low coupling rate when electrolytic tin plating is performed, and particularly when electrolytic tin plating is performed using a barrel plating method.Type: ApplicationFiled: June 11, 2009Publication date: January 7, 2010Applicant: Rohm and Haas Electronic Materials LLCInventors: Masaaki Imanari, Fai Lung Ting, Motoya Shimazu, Yasuo Ohta