Patents by Inventor Yusuke Watanabe

Yusuke Watanabe 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).

  • Polycyclic aromatic compound
    Patent number: 11407774
    Abstract: By providing a novel polycyclic aromatic compound in which a plurality of aromatic rings is linked via a nitrogen atom, a boron atom, or the like, options of a material for an organic EL element are increased. In addition, by using the novel polycyclic aromatic compound as a material for an organic electroluminescent element, an excellent organic EL element is provided.
    Type: Grant
    Filed: August 25, 2017
    Date of Patent: August 9, 2022
    Assignees: Kwansei Gakuin Educational Foundation, SK Materials JNC Co., Ltd.
    Inventors: Takuji Hatakeyama, Kohei Matsui, Yusuke Watanabe, Daisuke Baba, Yasuyuki Sasada, Motoki Yanai, Toshiaki Ikuta
  • SENSOR ELEMENT OF NOx SENSOR
    Publication number: 20220236212
    Abstract: A sensor element includes: a base part containing an oxygen-ion conductive solid electrolyte as a constituent material; at least one internal space into which a measurement gas is introduced; and at least one pump cell including an internal electrode disposed to face the internal space, an out-of-space pump electrode disposed at a location other than the internal space, and a portion of the base part located between these electrodes, the internal electrode includes a noble metal, the solid electrolyte, and a pore, and, in the internal electrode, a degree of variation of a boundary of a first region formed of the base part or the solid electrolyte contiguous with the base part and a second region occupied by the noble metal and the pore in a thickness direction of the element is 0.5 ?m or more and 6.5 ?m or less.
    Type: Application
    Filed: January 18, 2022
    Publication date: July 28, 2022
    Inventors: Takayuki SEKIYA, Yusuke WATANABE, Shiho IWAI
  • SENSOR ELEMENT OF NOx SENSOR AND METHOD FOR MANUFACTURING SENSOR ELEMENT OF NOx SENSOR
    Publication number: 20220236211
    Abstract: A sensor element includes: a base part containing an oxygen-ion conductive solid electrolyte as a constituent material; at least one internal space into which a measurement gas is introduced; and at least one pump cell including an internal electrode disposed to face the at least one internal space, an out-of-space pump electrode disposed at a location other than the at least one internal space, and a portion of the base part located between these electrodes, the internal electrode includes: an upper layer consisting of a noble metal, the solid electrolyte, and a pore; and a lower layer consisting of the noble metal and the solid electrolyte, and a volume ratio of the solid electrolyte in the lower layer is greater than a volume ratio of the solid electrolyte in the upper layer.
    Type: Application
    Filed: January 18, 2022
    Publication date: July 28, 2022
    Inventors: Takayuki SEKIYA, Yusuke WATANABE, Shiho IWAI
  • SENSOR ELEMENT OF GAS SENSOR
    Publication number: 20220236210
    Abstract: A sensor element includes a base part containing a solid electrolyte as a constituent material; at least one internal space into which a measurement gas is introduced; and at least one pump cell including an internal space electrode disposed to face the internal space, an out-of-space pump electrode disposed at a location other than the internal space, and a portion of the base part located between these electrodes, the internal space electrode includes a noble metal, the solid electrolyte, and a pore, and, in the internal space electrode, a ratio of a length of a boundary of a first region formed of the base part or the solid electrolyte contiguous with the base part and a second region occupied by the noble metal and the pore to a length of a boundary of the solid electrolyte and the internal space electrode is 1.1 or more.
    Type: Application
    Filed: January 18, 2022
    Publication date: July 28, 2022
    Inventors: Takayuki SEKIYA, Yusuke WATANABE, Shiho IWAI
  • Sensor element
    Patent number: 11385197
    Abstract: A sensor element includes: an element base including: a ceramic body made of an oxygen-ion conductive solid electrolyte, and having a gas inlet at one end portion thereof; at least one internal chamber located inside the ceramic body, and communicating with the gas inlet under predetermined diffusion resistance; an electrochemical pump cell including an electrode located on an outer surface of the ceramic body, an electrode facing the chamber, and a solid electrolyte located therebetween; and a heater buried in the ceramic body, and an leading-end protective layer being porous, and covering a leading end surface and four side surfaces in a predetermined range of the element base on the one end portion. The leading-end protective layer has an extension extending into the gas inlet, and fixed to an inner wall surface of the ceramic body demarcating the gas inlet.
    Type: Grant
    Filed: August 27, 2019
    Date of Patent: July 12, 2022
    Assignee: NGK INSULATORS, LTD.
    Inventors: Yusuke Watanabe, Mika Kai, Tomoya Seimori, Takashi Hino
  • Sensor element
    Patent number: 11385199
    Abstract: A sensor element includes: an element base including: a ceramic body made of an oxygen-ion conductive solid electrolyte, and having a gas inlet at one end portion thereof; at least one internal chamber located inside the ceramic body, and communicating with the gas inlet under predetermined diffusion resistance; an electrochemical pump cell including an electrode located on an outer surface of the ceramic body, an electrode facing the internal chamber, and a solid electrolyte located therebetween; and a heater buried in the ceramic body, and a leading-end protective layer being porous, and covering a leading end surface and four side surfaces in a predetermined range of the element base on the one end portion. The leading-end protective layer has an extension extending into a widened portion included in the gas inlet, and fixed to an inner wall surface of the widened portion.
    Type: Grant
    Filed: August 27, 2019
    Date of Patent: July 12, 2022
    Assignee: NGK INSULATORS, LTD.
    Inventors: Yusuke Watanabe, Mika Kai
  • Sensor element
    Patent number: 11360043
    Abstract: A sensor element includes: an element base including: a ceramic body made of an oxygen-ion conductive solid electrolyte, and having an inlet at one end portion thereof; at least one internal chamber located inside the ceramic body, and communicating with the inlet under predetermined diffusion resistance; an electrochemical pump cell including an electrode located on an outer surface of the ceramic body, an electrode facing the internal chamber, and a solid electrolyte located therebetween; and a heater buried in the ceramic body; and a porous leading-end protective layer surrounding a first range at least including a leading end surface and a region to be coped with water-induced cracking specified in advance. A single heat insulating space is interposed between the leading-end protective layer and a whole side surface of the element base at least in the above region.
    Type: Grant
    Filed: July 26, 2019
    Date of Patent: June 14, 2022
    Assignee: NGK INSULATORS, LTD.
    Inventors: Yusuke Watanabe, Mika Kai, Ryo Onishi, Saki Suzuki
  • Method for manufacturing three-dimensional shaped object and three-dimensional shaping device
    Patent number: 11351720
    Abstract: A method for manufacturing a three-dimensional shaped object includes: a first shaping step of forming a first layer in contact with a stage provided with a plurality of recessed portions by changing a relative position between a discharge unit and the stage while discharging a molten material from the discharge unit toward the stage; and a second shaping step of stacking one or more layers on the first layer by changing the relative position between the discharge unit and the stage while discharging the molten material from the discharge unit toward the first layer.
    Type: Grant
    Filed: May 29, 2020
    Date of Patent: June 7, 2022
    Inventors: Yusuke Watanabe, Kei Yokota
  • Three-dimensional shaping device
    Patent number: 11345086
    Abstract: Provided is a three-dimensional shaping device including a melting unit configured to melt a material into a shaping material, and a nozzle configured to discharge the shaping material supplied from the melting unit toward a stage. The melting unit includes a screw configured to rotate about a rotation axis and having a groove forming surface in which a groove to which the material is supplied is formed, a heating unit configured to heat the material supplied to the groove, a barrel having a facing surface that faces the groove forming surface and provided with a communication hole that communicates the facing surface with the nozzle, and a discharge amount adjustment mechanism provided in the communication hole and configured to adjust a flow rate of the shaping material discharged from the nozzle.
    Type: Grant
    Filed: November 5, 2020
    Date of Patent: May 31, 2022
    Inventors: Kenta Anegawa, Kohei Yuwaki, Yusuke Watanabe
  • Plasticizing device, injection molding machine, and molding device
    Patent number: 11331859
    Abstract: A plasticizing device includes a first member having a groove portion that has a spiral shape extending to a center, a motor that rotates the first member, a second member that faces the first member, and a heating unit for heating a material that is transported along the groove portion, the first member having a plurality of recessed portions on a bottom surface of the groove portion. By providing a plurality of recessed portions on the bottom surface of the first member through which the material flows, the rotational force of the rotating first member is easily transmitted to the material and the amount of material flowing in the first member can be increased.
    Type: Grant
    Filed: May 22, 2019
    Date of Patent: May 17, 2022
    Inventors: Yusuke Watanabe, Kei Yokota, Yuichi Sasage, Kenta Anegawa, Seiichiro Yamashita, Mitsuru Inutsuka, Kakeru Sasagawa
  • GAS SENSOR
    Publication number: 20220113279
    Abstract: A gas sensor includes: a laminate including at least one layer made of a solid electrolyte; a measured gas flow path formed in the laminate; and a pump electrode exposed in the measured gas flow path. In a part of a rear end side region, the pump electrode is sandwiched between a first layer and a second layer or is covered with a covering layer formed on the inner surface of the measured gas flow path. The area of a portion exposed in the measured gas flow path, of the pump electrode is 4 mm2 or more. The area of a portion exposed in the measured gas flow path, of the front end side region is larger than the area of a portion exposed in the measured gas flow path, of the rear end side region.
    Type: Application
    Filed: October 8, 2021
    Publication date: April 14, 2022
    Inventors: Yusuke WATANABE, Shotaro NIIZUMA, Toshihiro HIRAKAWA, Hayami AOTA
  • GAS SENSOR
    Publication number: 20220113278
    Abstract: A gas sensor includes a pump electrode disposed in a measured gas flow path, an oxygen detection electrode disposed in the measured gas flow path and containing platinum and zirconia, and a reference electrode disposed in a reference gas chamber where a reference gas exists, and containing platinum and zirconia. A first position of a front end of the pump electrode is located closer to a rear end side than a second position of a front end of the oxygen detection electrode is. When the content of zirconia in the oxygen detection electrode is X [%], and a ratio of a distance between the first and second positions to a longitudinal dimension of the pump electrode is Y [%], Y?141.96e?0.031X is satisfied. The content of zirconia is not lower than that of platinum in the reference electrode.
    Type: Application
    Filed: October 8, 2021
    Publication date: April 14, 2022
    Inventors: Yusuke WATANABE, Shotaro NIIZUMA, Hayami AOTA, Toshihiro HIRAKAWA
  • GAS SENSOR
    Publication number: 20220113277
    Abstract: A gas sensor includes: a laminate formed of a plurality of layers including at least one layer of a solid electrolyte; a reference gas chamber formed in the laminate and containing a reference gas; and a reference electrode partially exposed in the reference gas chamber. A portion which is not exposed in the reference gas chamber, of the reference electrode is sandwiched between, among the layers, a first layer and a second layer adjacent to the first layer. When an area of the portion sandwiched between the first layer and the second layer, of the reference electrode is defined as a first area, and an area of a portion exposed in the reference gas chamber, of the reference electrode is defined as a second area, a ratio of the first area to the second area is 0.3 or more.
    Type: Application
    Filed: October 8, 2021
    Publication date: April 14, 2022
    Inventors: Yusuke WATANABE, Shotaro NIIZUMA, Toshihiro HIRAKAWA, Hayami AOTA
  • Gas sensor
    Patent number: 11275049
    Abstract: A gas sensor includes a structural body made from an oxygen ion conductive solid electrolyte, a gas introduction passage which is formed in the structural body and into which a gas to be measured is introduced, a main adjustment chamber that communicates with the gas introduction passage, and a measurement chamber that communicates with the main adjustment chamber. A buffer space that communicates with the gas introduction passage, and at least two diffusion rate control members that communicate with the buffer space, are provided between the gas introduction passage and the main adjustment chamber. The respective widths Wb1 and Wb2 of the diffusion rate control members are less than the respective widths Wa, Wc, and Wd of the gas introduction passage, the buffer space, and the main adjustment chamber.
    Type: Grant
    Filed: October 23, 2019
    Date of Patent: March 15, 2022
    Assignee: NGK INSULATORS, LTD.
    Inventors: Yusuke Watanabe, Mika Kai, Shiho Iwai
  • Sensor element and gas sensor
    Patent number: 11268929
    Abstract: A sensor element includes a porous reference gas introduction layer for introducing a reference gas as a reference for detecting a specific gas concentration of a measurement-object gas from an entrance and allowing the reference gas to flow to a reference electrode disposed at the back, wherein the reference gas introduction layer is divided by a partition position defined to be in the range of 50 to 95% of the full length of the reference gas introduction layer from the entrance toward the inside, into a back side portion and an entrance side portion, the reference electrode is accommodated in the back side portion, and the diffusion resistance Rb of the entrance side portion is higher than the diffusion resistance Ra of the back side portion.
    Type: Grant
    Filed: March 28, 2018
    Date of Patent: March 8, 2022
    Assignee: NGK INSULATORS, LTD.
    Inventor: Yusuke Watanabe
  • Sensor element
    Patent number: 11249044
    Abstract: A first leading-end protective layer surrounding a first range at least including a leading end surface of an element base is included on a side of one end portion. A single heat insulating space is interposed between the first layer and the element base in the first range. The element base further includes a second leading-end protective layer having a larger porosity than the first layer, and located on a whole side surface at least in the first range. An end portion of the first layer opposite the one end portion is a fixed portion to the second layer. A portion where the fixed portion is in contact with the second layer is 10% to 50%, in area, of the first range. The fixed portion and the second layer make an end portion angle of 5° to 15° in an end portion of the heat insulating space.
    Type: Grant
    Filed: July 26, 2019
    Date of Patent: February 15, 2022
    Assignee: NGK INSULATORS, LTD.
    Inventors: Yusuke Watanabe, Mika Kai, Ryo Onishi, Saki Suzuki
  • Construction clip
    Patent number: D945646
    Type: Grant
    Filed: June 22, 2020
    Date of Patent: March 8, 2022
    Assignee: YOSHINO GYPSUM CO., LTD.
    Inventors: Ushio Sudo, Tomoya Hasegawa, Takuji Yamashita, Yusuke Watanabe
  • Construction clip
    Patent number: D945647
    Type: Grant
    Filed: June 22, 2020
    Date of Patent: March 8, 2022
    Assignee: YOSHINO GYPSUM CO., LTD.
    Inventors: Ushio Sudo, Tomoya Hasegawa, Takuji Yamashita, Yusuke Watanabe
  • Construction clip
    Patent number: D953582
    Type: Grant
    Filed: June 19, 2020
    Date of Patent: May 31, 2022
    Assignee: YOSHINO GYPSUM CO., LTD.
    Inventors: Ushio Sudo, Tomoya Hasegawa, Takuji Yamashita, Yusuke Watanabe
  • Construction clip
    Patent number: D955859
    Type: Grant
    Filed: June 18, 2020
    Date of Patent: June 28, 2022
    Assignee: YOSHINO GYPSUM CO., LTD.
    Inventors: Ushio Sudo, Tomoya Hasegawa, Takuji Yamashita, Yusuke Watanabe