Patents by Inventor Takashi Oyama
Takashi Oyama 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: 12165882Abstract: A method of producing a semiconductor device including: providing a temporary fixing laminate having a supporting substrate; machining a semiconductor member that is temporarily fixed to the supporting substrate; and separating the semiconductor member from the supporting substrate by irradiating the temporary fixing laminate with light from a side of a rear surface of the supporting substrate. A plurality of the irradiation target regions set at the rear surface are sequentially irradiated with light, and each of the irradiation target regions includes a part of the rear surface. The irradiation target regions adjacent to each other partially overlap with each other as viewed from a direction perpendicular to the rear surface, and a region in which the plurality of the irradiation target regions are combined includes the entire rear surface.Type: GrantFiled: May 20, 2020Date of Patent: December 10, 2024Inventors: Yuta Akasu, Emi Miyazawa, Takashi Kawamori, Shogo Sobue, Yasuyuki Oyama
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Publication number: 20240377255Abstract: A light detection device includes a Fabry-Perot interference filter provided with a light transmitting region on a predetermined line, a light detector disposed on one side with respect to the Fabry-Perot interference filter on the line, a package having an opening positioned on the other side with respect to the Fabry-Perot interference filter on the line, a light transmitting member provided in the package such that the opening is blocked, and a temperature control element having an endothermic region thermally connected to the Fabry-Perot interference filter and the light detector. The endothermic region is positioned on one side with respect to the light detector on the line.Type: ApplicationFiled: July 22, 2024Publication date: November 14, 2024Applicant: HAMAMATSU PHOTONICS K.K.Inventors: Masaki HIROSE, Katsumi SHIBAYAMA, Takashi KASAHARA, Toshimitsu KAWAI, Hiroki OYAMA
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Publication number: 20240369410Abstract: A light detection system includes a Fabry-Perot interference filter including a first mirror and a second mirror, a distance therebetween being variable, a light detection unit configured to detect light in a wavelength range of ?1 or more and ?2 or less, and a control unit configured to apply a voltage to the Fabry-Perot interference filter such that the distance changes in a distance range of d1 or more and d2 or less. For a transmission spectrum T1 (?) of light in a case where the distance is d1, a peak transmittance T1 (?a) appears within the wavelength range, and a transmittance T1 (?2) is less than or equal to 1%. For a transmission spectrum T2 (?) of light in a case where the distance is d2, a peak transmittance T2 (?b) appears within the wavelength range, and a transmittance T2 (?1) is less than or equal to 1%.Type: ApplicationFiled: June 21, 2022Publication date: November 7, 2024Applicant: HAMAMATSU PHOTONICS K.K.Inventors: Takashi KASAHARA, Katsumi SHIBAYAMA, Hiroki OYAMA, Yumi KURAMOTO
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Patent number: 12123799Abstract: An electrical inspection method includes: a step of preparing a wafer in which a plurality of Fabry-Perot interference filter portions is formed, each of the plurality of Fabry-Perot interference filter portions in which a distance between a first mirror portion and a second mirror portion facing each other varies by an electrostatic force; and a step of inspecting electrical characteristics of each of the plurality of Fabry-Perot interference filter portions.Type: GrantFiled: November 9, 2018Date of Patent: October 22, 2024Assignee: HAMAMATSU PHOTONICS K.K.Inventors: Takashi Kasahara, Katsumi Shibayama, Masaki Hirose, Toshimitsu Kawai, Hiroki Oyama, Yumi Kuramoto
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Publication number: 20240322119Abstract: An energy storage device according to one aspect of the present invention includes: a negative electrode including a negative active material layer; and a nonaqueous electrolyte. The negative active material layer contains a negative active material. The negative active material contains natural graphite particles. The natural graphite particles have an internal porosity of 2% or less. A state of charge of the negative active material in a charged state is 0.6 or less.Type: ApplicationFiled: July 11, 2022Publication date: September 26, 2024Inventors: Jun OYAMA, Kenta NAKAI, Takashi KANEKO, Kenta UEHIRA, Tomonori KAKO, Yuto YAMAKAWA, Taisei SEKIGUCHI
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Patent number: 10719113Abstract: When an electronic apparatus including a core chip and a hub controller chip is connected to an apparatus on the host side, a USB hub controller in the hub controller chip executes a process on a configuration between the USB hub controller and the apparatus on the host side and sets a limit value of power to be supplied, from a first limit value to a second limit value higher than the first limit value, and a VBUS current controller in the hub controller chip supplies the core chip with a power supply voltage generated based on a supplied power, which allows to maintain a configuration state between the apparatus on the host side and the USB hub controller at a time of starting up or at a time of class switching of the core chip and supply the core chip with the sufficient power.Type: GrantFiled: April 15, 2016Date of Patent: July 21, 2020Assignee: SOCIONEXT INC.Inventors: Takashi Oyama, Kuniaki Iwano, Masakazu Sato, Soichi Hagiwara
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Patent number: 10280524Abstract: The present invention provides a set of ozone water manufacturing device which can greatly reduce an unpleasant smell of ozone gas when ozone water is used for sterilizing hands and feet, and can save power consumption of a pump which operates for preventing stagnation of a water stream in an electrolytic bath. The ozone water manufacturing device includes an electrolytic bath and a mixer which atomizes air bubbles of the ozone gas in the ozone water flowing out of the electrolytic bath. Each of the electrode assemblies in an electrode unit within the electrolytic bath is inclined at the predetermined same angle in a vertical direction. The mixer includes a mixing case bottom and a mixing case main body. A vortex flow generating plate generates a violent water stream from the water stream within the mixing case main body.Type: GrantFiled: September 6, 2016Date of Patent: May 7, 2019Assignee: WATER AGENCY INC.Inventors: Takashi Oyama, Masaaki Kato, Yasuhiro Kotani
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Patent number: 10193054Abstract: A piezoelectric ceramic that contains an alkali niobate compound as its main ingredient. The alkali niobate compound has a perovskite crystal structure represented by AmBO3 and contains an alkali metal. There exists Sn in part of site A, and Zr in part of site B. A radial distribution function obtained from a K-edge X-ray absorption spectrum of Sn has a first peak intensity P1 at a first distance from a Sn atom and a second peak intensity P2 at a second distance from the Sn atom. The second distance is greater than the first distance, and the peak intensity ratio P1/P2 is 2.7 or less.Type: GrantFiled: November 11, 2015Date of Patent: January 29, 2019Assignee: MURATA MANUFACTURING CO., LTD.Inventors: Shinichiro Kawada, Shoichiro Suzuki, Hideki Ishii, Hiroyuki Hayashi, Suetake Omiya, Takashi Oyama
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Patent number: 10176773Abstract: A semiconductor device and a mobile terminal are described herein. In one example, a semiconductor device is provided that includes: a power-source part; an interface part; a logic part; and a driving part. In the semiconductor device, the power-source part includes a power-source-cutoff-detection circuit operable to detect a first state in which supply of an external power source is cut off. The logic part includes: a data-cutoff-detection circuit operable to detect a second state in which supply of stream data accompanied by synchronizing signals from outside the semiconductor device is cut off undesirably; and a control circuit operable to perform control for having the driving part cope with the power source cutoff with the power-source-cutoff-detection circuit detecting the first state or the data-cutoff-detection circuit detecting the second state.Type: GrantFiled: January 18, 2016Date of Patent: January 8, 2019Assignee: Synaptics Japan GKInventors: Yoshitaka Iwasaki, Takashi Oyama, Akihito Kumamoto, Satoshi Yamaguchi
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Publication number: 20180334752Abstract: The present invention provides a set of ozone water manufacturing device which can greatly reduce an unpleasant smell of ozone gas when ozone water is used for sterilizing hands and feet, and can save power consumption of a pump which operates for preventing stagnation of a water stream in an electrolytic bath. The ozone water manufacturing device includes an electrolytic bath and a mixer which atomizes air bubbles of the ozone gas in the ozone water flowing out of the electrolytic bath. Each of the electrode assemblies in an electrode unit within the electrolytic bath is inclined at the predetermined same angle in a vertical direction. The mixer includes a mixing case bottom and a mixing case main body. A vortex flow generating plate generates a violent water stream from the water stream within the mixing case main body.Type: ApplicationFiled: September 6, 2016Publication date: November 22, 2018Inventors: Takashi OYAMA, Masaaki KATO, Yasuhiro KOTANI
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Patent number: 9732278Abstract: Provided are petroleum coke having a sufficiently small coefficient of thermal expansion (CTE) and yielding sufficiently suppressed puffing phenomenon and a method for stably producing the petroleum coke. Specifically, the method for producing the petroleum coke comprises the step of coking feedstock oil comprising light oil having an end point of distillation of 380° C. or less, and heavy oil having an initial boiling point of 200° C. or more and comprising 50% by mass or more of an aromatic component, sulfur content of 0.5% by mass or less, and nitrogen content of 0.2% by mass or less.Type: GrantFiled: December 19, 2014Date of Patent: August 15, 2017Assignee: JX Nippon Oil & Energy CorporationInventors: Hiroshi Kawachi, Kazuhisa Nakanishi, Toshitaka Fujii, Takashi Oyama
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Publication number: 20160319199Abstract: Provided are petroleum coke having a sufficiently small coefficient of thermal expansion (CTE) and yielding sufficiently suppressed puffing phenomenon and a method for stably producing the petroleum coke. Specifically, the method for producing the petroleum coke comprises the step of coking feedstock oil comprising light oil having an end point of distillation of 380° C. or less, and heavy oil having an initial boiling point of 200° C. or more and comprising 50% by mass or more of an aromatic component, sulfur content of 0.5% by mass or less, and nitrogen content of 0.2% by mass or less.Type: ApplicationFiled: December 19, 2014Publication date: November 3, 2016Applicant: JX Nippon Oil & Energy CorporationInventors: Hiroshi Kawachi, Kazuhisa Nakanishi, Toshitaka Fujii, Takashi Oyama
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Publication number: 20160232867Abstract: A semiconductor device and a mobile terminal are described herein. In one example, a semiconductor device is provided that includes: a power-source part; an interface part; a logic part; and a driving part. In the semiconductor device, the power-source part includes a power-source-cutoff-detection circuit operable to detect a first state in which supply of an external power source is cut off. The logic part includes: a data-cutoff-detection circuit operable to detect a second state in which supply of stream data accompanied by synchronizing signals from outside the semiconductor device is cut off undesirably; and a control circuit operable to perform control for having the driving part cope with the power source cutoff with the power-source-cutoff-detection circuit detecting the first state or the data-cutoff-detection circuit detecting the second state.Type: ApplicationFiled: January 18, 2016Publication date: August 11, 2016Inventors: Yoshitaka IWASAKI, Takashi OYAMA, Akihito KUMAMOTO, Satoshi YAMAGUCHI
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Publication number: 20160231793Abstract: When an electronic apparatus including a core chip and a hub controller chip is connected to an apparatus on the host side, a USB hub controller in the hub controller chip executes a process on a configuration between the USB hub controller and the apparatus on the host side and sets a limit value of power to be supplied, from a first limit value to a second limit value higher than the first limit value, and a VBUS current controller in the hub controller chip supplies the core chip with a power supply voltage generated based on a supplied power, which allows to maintain a configuration state between the apparatus on the host side and the USB hub controller at a time of starting up or at a time of class switching of the core chip and supply the core chip with the sufficient power.Type: ApplicationFiled: April 15, 2016Publication date: August 11, 2016Applicant: Socionext Inc.Inventors: Takashi OYAMA, Kuniaki IWANO, Masakazu SATO, Soichi HAGIWARA
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Publication number: 20160064646Abstract: A piezoelectric ceramic that contains an alkali niobate compound as its main ingredient. The alkali niobate compound has a perovskite crystal structure represented by AmBO3 and contains an alkali metal. There exists Sn in part of site A, and Zr in part of site B. A radial distribution function obtained from a K-edge X-ray absorption spectrum of Sn has a first peak intensity P1 at a first distance from a Sn atom and a second peak intensity P2 at a second distance from the Sn atom. The second distance is greater than the first distance, and the peak intensity ratio P1/P2 is 2.7 or less.Type: ApplicationFiled: November 11, 2015Publication date: March 3, 2016Inventors: Shinichiro Kawada, Shoichiro Suzuki, Hideki Ishii, Hiroyuki Hayashi, Suetake Omiya, Takashi Oyama
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Patent number: 9214666Abstract: This disclosure concerns graphite materials having lattice distortion for lithium-ion secondary battery negative electrode obtained by a manufacturing method comprising the steps of: pulverizing and classifying a raw coke composition obtained from a heavy-oil composition undergone coking by delayed coking process, the raw coke composition having a H/C atomic ratio that is a ratio of hydrogen atoms H and carbon atoms C of 0.30 to 0.50 and having a micro-strength of 7 to 17 mass % to obtain powder of the raw coke composition; giving compressive stress and shear stress to the powder of the raw coke composition so that average circularity is 0.91 to 0.97 to obtain round powder; heating the round powder to obtain a carbonized composition; and graphitizing the carbonized composition.Type: GrantFiled: April 8, 2013Date of Patent: December 15, 2015Assignees: JX NIPPON OIL & ENERGY CORPORATION, TODA KYOGO CORP.Inventors: Takashi Suzuki, Noriyo Ishimaru, Takashi Oyama, Tamotsu Tano, Toshiyuki Oda, Ippei Fujinaga, Tomoaki Urai, Seiji Okazaki, Katsuaki Kurata, Toshiaki Hiramoto, Akino Sato, Wataru Oda
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Patent number: 9147873Abstract: A method for producing an amorphous carbon material for a negative electrode of a lithium-ion secondary battery includes the steps of; pulverizing and classifying a raw coke composition obtained from a heavy-oil composition undergone coking by delayed coking process to obtain powder of the raw coke composition, the raw coke composition having a H/C atomic ratio that is a ratio of hydrogen atoms H and carbon atoms C of 0.30 to 0.50 and having a micro-strength of 7 to 17 mass %; giving compressive stress and shear stress to the powder of the raw coke composition to obtain a carbonized composition precursor; and heating the carbonized composition precursor under an inert atmosphere at a temperature from 900° C. to 1,500° C. so that a size of a crystallite Lc(002) is in a range of 2 nm to 8 nm, the size being calculated from a (002) diffraction line obtained by X-ray wide-angle diffractometry.Type: GrantFiled: May 17, 2013Date of Patent: September 29, 2015Assignees: JX NIPPON OIL & ENERGY CORPORATION, TODA KOGYO CORP.Inventors: Takashi Suzuki, Noriyo Ishimaru, Takashi Oyama, Tamotsu Tano, Toshiyuki Oda, Ippei Fujinaga, Tomoaki Urai, Seiji Okazaki, Katsuaki Kurata, Toshiaki Hiramoto, Akino Sato, Wataru Oda
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Patent number: 9142832Abstract: A graphite material for a negative electrode is provided which can suppress capacity degradation due to repeated charging and discharging cycles, storage in a charged state, and floating charging. A method of manufacturing a graphite material for a negative electrode of a lithium ion secondary battery is provided in which an atomic ratio H/C of hydrogen atoms H and carbon atoms C in the raw coke composition is in a range of 0.30 to 0.50 and a microstrength of the raw coke composition is in a range of 7 wt % to 17 wt %.Type: GrantFiled: April 19, 2013Date of Patent: September 22, 2015Assignees: JX NIPPON OIL & ENERGY CORPORATION, TODA KOGYO CORP.Inventors: Takashi Suzuki, Noriyo Ishimaru, Takashi Oyama, Tamotsu Tano, Toshiyuki Oda, Ippei Fujinaga, Tomoaki Urai, Seiji Okazaki, Katsuaki Kurata, Toshiaki Hiramoto, Akino Sato, Wataru Oda
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Patent number: 8784644Abstract: Provided is a stock oil composition for a carbonaceous material for a negative electrode of a lithium-ion secondary battery which composition is useful for achieving excellent high-speed charge and discharge characteristics. The stock oil composition for a carbonaceous material for a negative electrode of a lithium-ion secondary battery uses a bottom oil of residue fluid catalytic cracking apparatus as a raw material. The stock oil composition comprises, of a saturated component, an aromatic component, a resin component and an asphaltene component detectable by development of the stock oil composition using thin-layer chromatography, the saturated component ranging from 30 to 50% by weight and the aromatic component ranging from 50 to 70% by weight; and has an average molecular weight of from 400 to 600.Type: GrantFiled: December 27, 2012Date of Patent: July 22, 2014Assignee: JX Nippon Oil & Energy CorporationInventors: Tamotsu Tano, Takashi Oyama, Hiroshi Ozawa, Jun Ougiya, Akio Sakamoto
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Publication number: 20140161713Abstract: An amorphous carbon material for lithium-ion secondary battery negative electrode is capable of reducing capacity degradation due to repeated charge and discharge cycles, storage while being charged, or floating charge. A method for producing an amorphous carbon material for a negative electrode of a lithium-ion secondary battery includes the steps of: pulverizing and classifying a raw coke composition obtained from a heavy-oil composition undergone coking by delayed coking process to obtain powder of the raw coke composition, the raw coke composition having a H/C atomic ratio that is a ratio of hydrogen atoms H and carbon atoms C of 0.30 to 0.50 and having a micro-strength of 7 to 17 mass %; giving compressive stress and shear stress to the powder of the raw coke composition to obtain a carbonized composition precursor; and heating the carbonized composition precursor under an inert atmosphere at a temperature from 900° C. to 1,500° C.Type: ApplicationFiled: May 17, 2013Publication date: June 12, 2014Inventors: Takashi SUZUKI, Noriyo ISHIMARU, Takashi OYAMA, Tamotsu TANO, Toshiyuki ODA, Ippei FUJINAGA (DECEASED), Tomoaki URAI, Seiji OKAZAKI, Katsuaki KURATA, Toshiaki HIRAMOTO, Akino SATO, Wataru ODA