Patents by Inventor Yoshinobu Sakakibara

Yoshinobu Sakakibara 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: 11912952
    Abstract: A material comprising: a support 10; and a brush layer 20 containing a brush-like polymer chain assemblage 21 formed of a plurality of polymer chains and a swelling liquid 22, in which a brush layer 20 is swollen with the swelling liquid 22, the brush layer 20 retaining on the surface a lubricating liquid 30, and the swelling liquid 22 contained in the brush layer 20 and the lubricating liquid 30 being phase-separated to form a liquid-liquid phase separation interface 40 in between and a sliding system using the material.
    Type: Grant
    Filed: December 1, 2020
    Date of Patent: February 27, 2024
    Assignees: KYOTO UNIVERSITY, NATIONAL INSTITUTE OF TECHNOLOGY, NATIONAL UNIVERSITY CORPORATION YOKOHAMA NATIONAL UNIVERSITY
    Inventors: Yoshinobu Tsujii, Keita Sakakibara, Takaya Sato, Hiroyuki Arafune, Ken Nakano, Mayu Miyazaki
  • Patent number: 11536858
    Abstract: Provided is a radiation monitor and the like capable of appropriately measuring radiation. A radiation monitor (100) includes: radiation detection units (11, 12); optical fibers (13p, 13q) that transmit light generated by a plurality of radiation detection elements (11a, 12a) to merge; a light detection unit (14) that converts the light after merging guided to the light detection unit into an electric pulse; a measurement device (15) that calculates a dose rate of radiation based on a count rate of the electric pulses; and an analysis/display device (16). Housings (11b, 12b) include a housing (11b) made of a first material and another housing (12b) made of a second material.
    Type: Grant
    Filed: August 30, 2018
    Date of Patent: December 27, 2022
    Assignee: HITACHI, LTD.
    Inventors: Takahiro Tadokoro, Yuichiro Ueno, Katsunori Ueno, Kouichi Okada, Shuichi Hatakeyama, Yasushi Nagumo, Takahiro Itou, Yoshinobu Sakakibara
  • Patent number: 10877167
    Abstract: Provided is a radiation monitor, including: a radiation detection unit which includes a radiation detection element, the radiation detection element emitting light of a predetermined light emission wavelength; a light emission unit which emits light of a wavelength different from the light emission wavelength; a wavelength selection unit which passes the light of the light emission wavelength, and is set to a first mode to block the light from the light emission unit; an optical transmission line which transmits the light; a light detection unit which converts the light passing through the wavelength selection unit into an electric pulse; and a control unit which measures a count rate of the electric pulse, and determines whether at least the light emission unit is degraded on the basis of the count rate and a light intensity of the light emission unit.
    Type: Grant
    Filed: August 8, 2017
    Date of Patent: December 29, 2020
    Assignee: HITACHI, LTD.
    Inventors: Takahiro Tadokoro, Katsunori Ueno, Yuichiro Ueno, Kouichi Okada, Shuichi Hatakeyama, Yasushi Nagumo, Yoshinobu Sakakibara, Toru Shibutani, Takahiro Itou
  • Publication number: 20200278458
    Abstract: Provided is a radiation monitor and the like capable of appropriately measuring radiation. A radiation monitor (100) includes: radiation detection units (11, 12); optical fibers (13p, 13q) that transmit light generated by a plurality of radiation detection elements (11a, 12a) to merge; a light detection unit (14) that converts the light after merging guided to the light detection unit into an electric pulse; a measurement device (15) that calculates a dose rate of radiation based on a count rate of the electric pulses; and an analysis/display device (16). Housings (11b, 12b) include a housing (11b) made of a first material and another housing (12b) made of a second material.
    Type: Application
    Filed: August 30, 2018
    Publication date: September 3, 2020
    Inventors: Takahiro TADOKORO, Yuichiro UENO, Katsunori UENO, Kouichi OKADA, Shuichi HATAKEYAMA, Yasushi NAGUMO, Takahiro ITOU, Yoshinobu SAKAKIBARA
  • Publication number: 20190204457
    Abstract: Provided is a radiation monitor, including: a radiation detection unit which includes a radiation detection element, the radiation detection element emitting light of a predetermined light emission wavelength; a light emission unit which emits light of a wavelength different from the light emission wavelength; a wavelength selection unit which passes the light of the light emission wavelength, and is set to a first mode to block the light from the light emission unit; an optical transmission line which transmits the light; a light detection unit which converts the light passing through the wavelength selection unit into an electric pulse; and a control unit which measures a count rate of the electric pulse, and determines whether at least the light emission unit is degraded on the basis of the count rate and a light intensity of the light emission unit.
    Type: Application
    Filed: August 8, 2017
    Publication date: July 4, 2019
    Inventors: Takahiro TADOKORO, Katsunori UENO, Yuichiro UENO, Kouichi OKADA, Shuichi HATAKEYAMA, Yasushi NAGUMO, Yoshinobu SAKAKIBARA, Toru SHIBUTANI, Takahiro ITOU
  • Patent number: 9274233
    Abstract: Provided is a measurement unit and measurement method for reducing attenuation due to optical fiber length and SN degradation due to background in a dosage rate monitor that uses optical fiber. This system comprises: a radiation detector for detecting radiation dosage; a light source for irradiating stimulating light on the radiation detector; a photodetector for detecting light generated by the radiation detector; an optical fiber for connecting the photodetector and the radiation detector and light source, and transmitting light from the light source and light from the radiation detector; a measurement unit for counting the pulses outputted from the photodetector; and an analysis unit for extracting the luminous energy originating from the radiation detector, from time information, wave height information, and the count value, which are measurement results obtained by the measurement unit, and converting the luminous energy to a dosage and dosage rate.
    Type: Grant
    Filed: December 3, 2012
    Date of Patent: March 1, 2016
    Assignee: Hitachi, Ltd.
    Inventors: Katsunori Ueno, Hiroshi Kitaguchi, Takahiro Tadokoro, Akihisa Kaihara, Koichi Okada, Yoshinobu Sakakibara, Yuta Inamura, Hitoshi Kuwabara
  • Publication number: 20150123002
    Abstract: Provided is a measurement unit and measurement method for reducing attenuation due to optical fiber length and SN degradation due to background in a dosage rate monitor that uses optical fiber. This system comprises: a radiation detector for detecting radiation dosage; a light source for irradiating stimulating light on the radiation detector; a photodetector for detecting light generated by the radiation detector; an optical fiber for connecting the photodetector and the radiation detector and light source, and transmitting light from the light source and light from the radiation detector; a measurement unit for counting the pulses outputted from the photodetector; and an analysis unit for extracting the luminous energy originating from the radiation detector, from time information, wave height information, and the count value, which are measurement results obtained by the measurement unit, and converting the luminous energy to a dosage and dosage rate.
    Type: Application
    Filed: December 3, 2012
    Publication date: May 7, 2015
    Applicant: HITACHI, LTD.
    Inventors: Katsunori Ueno, Hiroshi Kitaguchi, Takahiro Tadokoro, Akihisa Kaihara, Koichi Okada, Yoshinobu Sakakibara, Yuta Inamura, Hitoshi Kuwabara
  • Patent number: 8323834
    Abstract: Disclosed is an electrical storage device having excellent safety and high battery capacity. Specifically disclosed is an electrical storage device comprising at least a positive electrode having a positive electrode active material layer and a positive electrode collector, a negative electrode having a negative electrode active material layer and a negative electrode collector, a separator and an organic electrolyte solution. This electrical storage device is characterized in that the negative electrode active material layer is composed of a metal complex oxide which absorbs and desorbs lithium ions, the positive electrode active material layer contains a carbonaceous material having a layered crystal structure, and the interlayer distance d002 of the layered crystal structure in the carbonaceous material is within the range of 0.36-0.38 nm.
    Type: Grant
    Filed: January 18, 2008
    Date of Patent: December 4, 2012
    Assignee: Stella Chemifa Corporation
    Inventors: Tetsuo Nishida, Sojiro Kon, Tetsuya Kume, Yoshinobu Sakakibara
  • Publication number: 20120202111
    Abstract: There is provided a battery device having a high operating voltage and a low capacity degradation rate. The battery device comprising: a positive electrode having at least a positive electrode active material layer and a positive electrode collector; a negative electrode; a separator; and an organic electrolytic solution, wherein the positive electrode active material layer contains non-porous carbon having a specific surface area of 500 m2/g or less as a main component, and a material forming the negative electrode is different from a positive electrode active material, and contains a material capable of storing and releasing an alkali metal ion or an alkaline earth metal ion as a main component.
    Type: Application
    Filed: April 16, 2012
    Publication date: August 9, 2012
    Applicants: Cataler Corporation, Stella Chemifa Corporation
    Inventors: Tetsuo Nishida, Hitoshi Tsurumaru, Sojiro Kon, Tetsuya Kume, Yoshinobu Sakakibara, Kazuaki Yanagi
  • Publication number: 20100099030
    Abstract: Disclosed is an electrical storage device having excellent safety and high battery capacity. Specifically disclosed is an electrical storage device comprising at least a positive electrode having a positive electrode active material layer and a positive electrode collector, a negative electrode having a negative electrode active material layer and a negative electrode collector, a separator and an organic electrolyte solution. This electrical storage device is characterized in that the negative electrode active material layer is composed of a metal complex oxide which absorbs and desorbs lithium ions, the positive electrode active material layer contains a carbonaceous material having a layered crystal structure, and the interlayer distance d002 of the layered crystal structure in the carbonaceous material is within the range of 0.36-0.38 nm.
    Type: Application
    Filed: January 18, 2008
    Publication date: April 22, 2010
    Applicants: STELLA CHEMIFA CORPORATION, CATALER CORPORATION
    Inventors: Tetsuo Nishida, Shojiro Kon, Tetsuya Kume, Yoshinobu Sakakibara
  • Publication number: 20090197168
    Abstract: There is provided a battery device having a high operating voltage and a low capacity degradation rate. The battery device comprising: a positive electrode having at least a positive electrode active material layer and a positive electrode collector; a negative electrode; a separator; and an organic electrolytic solution, wherein the positive electrode active material layer contains non-porous carbon having a specific surface area of 500 m2/g or less as a main component, and a material forming the negative electrode is different from a positive electrode active material, and contains a material capable of storing and releasing an alkali metal ion or an alkaline earth metal ion as a main component.
    Type: Application
    Filed: November 2, 2006
    Publication date: August 6, 2009
    Inventors: Tetsuo Nishida, Hitoshi Tsurumaru, Sojiro Kon, Tetsuya Kume, Yoshinobu Sakakibara, Kazuaki Yanagi