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).

  • Patent number: 12165882
    Abstract: 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: Grant
    Filed: May 20, 2020
    Date of Patent: December 10, 2024
    Inventors: Yuta Akasu, Emi Miyazawa, Takashi Kawamori, Shogo Sobue, Yasuyuki Oyama
  • Publication number: 20240377255
    Abstract: 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: Application
    Filed: July 22, 2024
    Publication date: November 14, 2024
    Applicant: HAMAMATSU PHOTONICS K.K.
    Inventors: Masaki HIROSE, Katsumi SHIBAYAMA, Takashi KASAHARA, Toshimitsu KAWAI, Hiroki OYAMA
  • Publication number: 20240369410
    Abstract: 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: Application
    Filed: June 21, 2022
    Publication date: November 7, 2024
    Applicant: HAMAMATSU PHOTONICS K.K.
    Inventors: Takashi KASAHARA, Katsumi SHIBAYAMA, Hiroki OYAMA, Yumi KURAMOTO
  • Patent number: 12123799
    Abstract: 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: Grant
    Filed: November 9, 2018
    Date of Patent: October 22, 2024
    Assignee: HAMAMATSU PHOTONICS K.K.
    Inventors: Takashi Kasahara, Katsumi Shibayama, Masaki Hirose, Toshimitsu Kawai, Hiroki Oyama, Yumi Kuramoto
  • Publication number: 20240322119
    Abstract: 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: Application
    Filed: July 11, 2022
    Publication date: September 26, 2024
    Inventors: Jun OYAMA, Kenta NAKAI, Takashi KANEKO, Kenta UEHIRA, Tomonori KAKO, Yuto YAMAKAWA, Taisei SEKIGUCHI
  • Patent number: 10719113
    Abstract: 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: Grant
    Filed: April 15, 2016
    Date of Patent: July 21, 2020
    Assignee: SOCIONEXT INC.
    Inventors: Takashi Oyama, Kuniaki Iwano, Masakazu Sato, Soichi Hagiwara
  • Patent number: 10280524
    Abstract: 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: Grant
    Filed: September 6, 2016
    Date of Patent: May 7, 2019
    Assignee: WATER AGENCY INC.
    Inventors: Takashi Oyama, Masaaki Kato, Yasuhiro Kotani
  • Patent number: 10193054
    Abstract: 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: Grant
    Filed: November 11, 2015
    Date of Patent: January 29, 2019
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Shinichiro Kawada, Shoichiro Suzuki, Hideki Ishii, Hiroyuki Hayashi, Suetake Omiya, Takashi Oyama
  • Patent number: 10176773
    Abstract: 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: Grant
    Filed: January 18, 2016
    Date of Patent: January 8, 2019
    Assignee: Synaptics Japan GK
    Inventors: Yoshitaka Iwasaki, Takashi Oyama, Akihito Kumamoto, Satoshi Yamaguchi
  • Publication number: 20180334752
    Abstract: 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: Application
    Filed: September 6, 2016
    Publication date: November 22, 2018
    Inventors: Takashi OYAMA, Masaaki KATO, Yasuhiro KOTANI
  • Patent number: 9732278
    Abstract: 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: Grant
    Filed: December 19, 2014
    Date of Patent: August 15, 2017
    Assignee: JX Nippon Oil & Energy Corporation
    Inventors: Hiroshi Kawachi, Kazuhisa Nakanishi, Toshitaka Fujii, Takashi Oyama
  • Publication number: 20160319199
    Abstract: 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: Application
    Filed: December 19, 2014
    Publication date: November 3, 2016
    Applicant: JX Nippon Oil & Energy Corporation
    Inventors: Hiroshi Kawachi, Kazuhisa Nakanishi, Toshitaka Fujii, Takashi Oyama
  • Publication number: 20160232867
    Abstract: 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: Application
    Filed: January 18, 2016
    Publication date: August 11, 2016
    Inventors: Yoshitaka IWASAKI, Takashi OYAMA, Akihito KUMAMOTO, Satoshi YAMAGUCHI
  • Publication number: 20160231793
    Abstract: 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: Application
    Filed: April 15, 2016
    Publication date: August 11, 2016
    Applicant: Socionext Inc.
    Inventors: Takashi OYAMA, Kuniaki IWANO, Masakazu SATO, Soichi HAGIWARA
  • Publication number: 20160064646
    Abstract: 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: Application
    Filed: November 11, 2015
    Publication date: March 3, 2016
    Inventors: Shinichiro Kawada, Shoichiro Suzuki, Hideki Ishii, Hiroyuki Hayashi, Suetake Omiya, Takashi Oyama
  • Patent number: 9214666
    Abstract: 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: Grant
    Filed: April 8, 2013
    Date of Patent: December 15, 2015
    Assignees: 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
  • Patent number: 9147873
    Abstract: 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: Grant
    Filed: May 17, 2013
    Date of Patent: September 29, 2015
    Assignees: 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
  • Patent number: 9142832
    Abstract: 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: Grant
    Filed: April 19, 2013
    Date of Patent: September 22, 2015
    Assignees: 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
  • Patent number: 8784644
    Abstract: 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: Grant
    Filed: December 27, 2012
    Date of Patent: July 22, 2014
    Assignee: JX Nippon Oil & Energy Corporation
    Inventors: Tamotsu Tano, Takashi Oyama, Hiroshi Ozawa, Jun Ougiya, Akio Sakamoto
  • Publication number: 20140161713
    Abstract: 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: Application
    Filed: May 17, 2013
    Publication date: June 12, 2014
    Inventors: 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