Patents by Inventor Takaki Yasuda

Takaki Yasuda 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).

  • Publication number: 20210194040
    Abstract: A lithium-ion rechargeable battery 1 includes: a stainless-steel substrate 10; a negative electrode layer 20 that contains a negative-electrode active material and is laminated on the substrate 10; a solid electrolyte layer that contains an inorganic solid electrolyte having lithium-ion conductivity and is laminated on the negative electrode layer 20; a positive electrode layer 40 that contains a positive-electrode active material and is laminated on the solid electrolyte layer 30; and a positive electrode collector layer 50 that is composed of titanium and is laminated on the positive electrode layer 40. The boundary portion of the solid electrolyte layer 30 and the positive electrode layer 40 in the lithium-ion rechargeable battery 1 is provided with a mixture layer 70 in which the positive-electrode active material and the inorganic solid electrolyte are mixed. These increase the discharge capacity of the all-solid lithium-ion rechargeable battery.
    Type: Application
    Filed: January 19, 2018
    Publication date: June 24, 2021
    Applicant: SHOWA DENKO K.K.
    Inventors: Takaki YASUDA, Akira SAKAWAKI, Tatsunori SHINO
  • Publication number: 20210175512
    Abstract: A lithium-ion rechargeable battery (1) includes: a positive electrode layer (30) containing a positive electrode active material; a solid electrolyte layer (40) containing an inorganic solid electrolyte; a storage layer (50) made of porous platinum (Pt) and storing lithium; a coating layer (60) made of an amorphous metal or alloy; and a negative electrode collector layer (70) made of platinum (Pt); these layers are stacked in this order.
    Type: Application
    Filed: November 20, 2018
    Publication date: June 10, 2021
    Applicant: SHOWA DENKO K.K.
    Inventors: Haruaki UCHIDA, Akira SAKAWAKI, Takaki YASUDA
  • Publication number: 20200381701
    Abstract: A method for manufacturing a lithium-ion rechargeable battery (1), the lithium-ion rechargeable battery including: a positive electrode layer (30) containing a positive electrode active material; a solid electrolyte layer (40) containing an inorganic solid electrolyte; a storage layer (50) made of porous platinum (Pt) and storing lithium; a coating layer (60) made of an amorphous chromium-titanium (CrTi) alloy; and a negative electrode collector layer (70) made of platinum (Pt); these layers are stacked in this order. The storage layer (50) is first composed of a dense platinum layer formed by sputtering, and then undergoes initial charge and discharge to become porous, which results in a porous part (51) and a number of pores (52) being formed. This method of manufacturing the lithium-ion rechargeable battery (1) restrains or prevents peeling inside the all-solid lithium-ion rechargeable battery.
    Type: Application
    Filed: November 26, 2018
    Publication date: December 3, 2020
    Applicant: SHOWA DENKO K.K.
    Inventors: Takaki YASUDA, Akira SAKAWAKI, Haruaki UCHIDA
  • Publication number: 20200350619
    Abstract: A lithium-ion rechargeable battery (1) includes: a positive electrode layer (30) containing a positive electrode active material; a solid electrolyte layer (40) containing an inorganic solid electrolyte; a storage layer (50) made of porous platinum (Pt) and storing lithium; a coating layer (60) made of an amorphous chromium-titanium (CrTi) alloy; and a negative electrode collector layer (70) made of platinum (Pt); these layers are stacked in this order. The storage layer (50) is first composed of a dense platinum layer formed by sputtering, and then undergoes initial charge and discharge to become porous, which results in a porous part (51) and a number of pores (52) being formed. This restrains or prevents peeling inside the all-solid lithium-ion rechargeable battery.
    Type: Application
    Filed: November 26, 2018
    Publication date: November 5, 2020
    Applicant: SHOWA DENKO K.K.
    Inventors: Takaki YASUDA, Akira SAKAWAKI, Haruaki UCHIDA
  • Publication number: 20200274191
    Abstract: A lithium-ion rechargeable battery (1) including: a substrate (10); a negative electrode collector layer (20) made of metal; a negative electrode layer (30) containing a negative-electrode active material; a solid electrolyte layer (40) containing an inorganic solid electrolyte; a positive electrode layer (60) containing a positive-electrode active material and the inorganic solid electrolyte; and a mixture layer (50) containing the positive-electrode active material and the inorganic solid electrolyte provided between the solid electrolyte layer (40) and the positive electrode layer (60), the ratio of the positive-electrode active material therein being lower than that in the positive electrode layer (60). Also disclosed is a method for producing a lithium-ion rechargeable battery.
    Type: Application
    Filed: July 23, 2018
    Publication date: August 27, 2020
    Applicant: SHOWA DENKO K.K.
    Inventors: Takaki YASUDA, Akira SAKAWAKI, Tatsunori SHINO
  • Publication number: 20200259171
    Abstract: A lithium-ion rechargeable battery (1) includes: a positive electrode layer (20) containing a positive electrode active material; a solid electrolyte layer (30) containing an inorganic solid electrolyte having lithium ion conductivity; and a negative electrode collector layer (50) serving as a negative electrode. The negative electrode collector layer (50) includes: a storage layer (51) containing multiple columnar crystals made of metal titanium and each extending in a thickness direction; and a coating layer (52) coating the storage layer (51). By a charging operation of the lithium-ion rechargeable battery (1), a negative electrode (40) made of metal lithium is formed at grain boundaries inside the storage layer (51). This prevents peeling inside the all-solid lithium-ion rechargeable battery.
    Type: Application
    Filed: August 22, 2018
    Publication date: August 13, 2020
    Applicant: SHOWA DENKO K.K.
    Inventors: Haruaki UCHIDA, Akira SAKAWAKI, Takaki YASUDA
  • Publication number: 20200185761
    Abstract: A lithium-ion rechargeable battery (1) includes: a substrate (10); a positive electrode collector layer (20) stacked on the substrate (10); a positive electrode layer (30) stacked on the positive electrode collector layer (20); an inorganic solid electrolyte layer (40) stacked on the positive electrode layer (30); a negative electrode layer (50) stacked on the inorganic solid electrolyte layer (40); and a negative electrode collector layer (60) stacked on the negative electrode layer (50). The positive electrode layer (30) contains a mixture of an amorphized, solid electrolyte region (31) containing an inorganic solid electrolyte and a crystallized, positive electrode region (32) containing a positive electrode active material.
    Type: Application
    Filed: July 4, 2018
    Publication date: June 11, 2020
    Applicant: SHOWA DENKO K.K.
    Inventors: Akira SAKAWAKI, Tatsunori SHINO, Takaki YASUDA
  • Publication number: 20200165719
    Abstract: The sputtering target 100 used in forming a positive electrode layer of a lithium-ion rechargeable battery is made of a sintered body including first particles 110 and second particles 120, the first particles 110 each containing lithium phosphorus oxide (e.g., Li3PO4) as an inorganic solid electrolyte, the second particles 120 each containing lithium transition metal oxide (e.g., LiNiO2) as a positive electrode active material.
    Type: Application
    Filed: April 11, 2018
    Publication date: May 28, 2020
    Applicant: SHOWA DENKO K.K.
    Inventors: Takaki YASUDA, Akira SAKAWAKI
  • Publication number: 20200083558
    Abstract: A lithium-ion rechargeable battery (1) includes a battery part (100) which performs charging and discharging using lithium ions, and a shell (30) for housing the battery part (100) in the interior thereof. The battery part (100) is configured by laminating: a first battery part (10) formed by laminating a first positive electrode layer (11), a first solid electrolyte layer (12), a first negative electrode layer (13) and a first negative electrode collector layer (14); and a second battery part (20) formed by laminating a second positive electrode layer (21), a second solid electrolyte layer (22), a second negative electrode layer (23) and a second negative electrode collector layer (24). In the shell (30), the first battery part (10) and the second battery part (20) are connected in series.
    Type: Application
    Filed: November 1, 2017
    Publication date: March 12, 2020
    Applicants: SHOWA DENKO K.K., SHOWA DENKO PACKAGING CO., LTD.
    Inventors: Akira SAKAWAKI, Takaki YASUDA, Koji MINAMITANI
  • Publication number: 20200052342
    Abstract: A lithium-ion rechargeable battery (1) provided with: a battery unit (100) including a metal substrate (10) and a battery part (20) configured by laminating thin films on the substrate (10); and a shell (200) provided on the surface of the substrate (10), on which the battery part (20) is formed, to seal the substrate (10) and the battery unit (100). The shell (200) includes a laminated film (30) formed by laminating a metal layer (33) and various types of resin layers. Consequently, the thickness of the thin-film type lithium-ion rechargeable battery including a solid electrolyte is reduced.
    Type: Application
    Filed: January 31, 2018
    Publication date: February 13, 2020
    Applicants: SHOWA DENKO K.K., SHOWA DENKO PACKAGING CO., LTD.
    Inventors: Takaki YASUDA, Isao KABE, Koji MINAMITANI, Kensuke NAGATA
  • Publication number: 20190386302
    Abstract: A lithium-ion rechargeable battery (1) composed of a positive electrode layer (20), a solid electrolyte layer (30), a negative electrode layer (40) and a negative electrode collector layer (50) that are stacked on a substrate (10). The positive electrode layer (20) is made of lithium manganate (Li2.5Mn2O4) having a lithium molar ratio higher than that of a stoichiometric composition.
    Type: Application
    Filed: December 1, 2017
    Publication date: December 19, 2019
    Applicant: Showa Denko K.K.
    Inventors: Takaki YASUDA, Akira SAKAWAKI, Tatsunori SHINO
  • Publication number: 20190296389
    Abstract: A lithium-ion rechargeable battery (1) includes: a battery unit (50) including a metal substrate (5); a first battery part (10) formed on a front surface of the substrate (5) and a second battery part (20) formed on a back surface thereof; and a shell (30) that houses the first battery part (10) and the second battery part (20) therein. In the shell (30), a first metal layer (313) and a second metal layer (323) are connected to a first negative electrode collector layer (14) of the first battery part (10) and a second negative electrode collector layer (24) of the second battery part (20), respectively. Further, by connecting the first metal layer (313) and the second metal layer (323), the first battery part (10) and the second battery part (20) are connected in parallel within the shell (30).
    Type: Application
    Filed: November 1, 2017
    Publication date: September 26, 2019
    Applicants: SHOWA DENKO K.K., SHOWA DENKO PACKGING CO., LTD.
    Inventors: Akira SAKAWAKI, Takaki YASUDA, Koji MINAMITANI
  • Publication number: 20190273225
    Abstract: A lithium-ion rechargeable battery 1 includes a battery part 10 which performs charging and discharging using lithium ions, and a shell 30 for housing the battery part 10 in the interior thereof. The shell 30 is constituted by thermally adhering a first laminated film 31 which includes a first metal layer 313 and a first thermo-adhesive resin layer 315, a second laminated film 32 which includes a second metal layer 323 and a second thermo-adhesive resin layer 325 by thermally adhering the first thermo-adhesive resin layer 315 and the second thermo-adhesive resin layer 325. Moreover, the positive electrode side of the battery part 10 is electrically connected to the first metal layer 313 of the first laminated film 31, and the negative electrode side of the battery part 10 is electrically connected to the second metal layer 323 of the second laminated film 32.
    Type: Application
    Filed: October 11, 2017
    Publication date: September 5, 2019
    Applicants: SHOWA DENKO K.K., SHOWA DENKO PACKAGING CO., LTD.
    Inventors: Akira SAKAWAKI, Takaki YASUDA, Koji MINAMITANI
  • Publication number: 20190252717
    Abstract: A lithium-ion rechargeable battery (1) including: a battery unit (50) including a metal substrate (5) and a battery part (10) formed on a surface of the substrate (5); and a shell (30) for housing the battery part (10) in the interior thereof. The shell (30) includes a laminated film (31) that includes a metal layer (313) and a thermo-adhesive resin layer (315), the metal layer (313) is connected to a negative electrode collector layer (14) of the battery part (10), the substrate (5) functions as a positive external electrode of the battery part (10), and the metal layer (313) functions as a negative external electrode of the battery part (10).
    Type: Application
    Filed: October 11, 2017
    Publication date: August 15, 2019
    Applicants: SHOWA DENKO K.K., SHOWA DENKO PACKAGING CO., LTD.
    Inventors: Akira SAKAWAKI, Takaki YASUDA, Koji MINAMITANI
  • Patent number: 9085728
    Abstract: Provided are a composition containing a quantum dot fluorescent body, a molded body of a quantum dot fluorescent body dispersion resin, a structure containing a quantum dot fluorescent body, a light-emitting device, an electronic apparatus or a mechanical device, and a method for producing the molded body. The quantum dot fluorescent body is dispersed in a cycloolefin (co)polymer, which is a dispersion resin, to form the composition containing a quantum dot fluorescent body. The composition containing the quantum dot fluorescent body is molded, forming the molded body of the quantum dot fluorescent body dispersion resin. A gas barrier layer is formed at a portion or the entirety of the surface of the molded body of the quantum dot fluorescent body dispersion resin. A light-emitting device is configured using the composition containing the quantum dot fluorescent body as a sealing material that seals an LED chip.
    Type: Grant
    Filed: January 16, 2012
    Date of Patent: July 21, 2015
    Assignee: SHOWA DENKO K.K.
    Inventors: Hiroshi Uchida, Takaki Yasuda, Toshio Fujita
  • Publication number: 20130334557
    Abstract: Provided are a composition that contains a quantum dot fluorescent body and that is able to suppress quenching of the quantum dot fluorescent body, a molded body of a quantum dot fluorescent body dispersion resin, a structure containing a quantum dot fluorescent body, a light-emitting device, an electronic apparatus, or a mechanical device, and a method for producing the molded body of a quantum dot fluorescent body dispersion resin.
    Type: Application
    Filed: January 16, 2012
    Publication date: December 19, 2013
    Applicant: SHOWA DENKO K.K.
    Inventors: Hiroshi Uchida, Takaki Yasuda, Toshio Fujita
  • Patent number: 8188670
    Abstract: A light emitting device which can emit light of an arbitrary color temperature and a process for producing a light emitting device which can emit light of an arbitrary color temperature are provided. Such a light emitting device includes a first light emitting diode device (2) and a second light emitting diode device (3) which are connected together in parallel, and a power-supply apparatus (4) which is capable of reversing polarity, in which the color temperature of the first light emitting diode device (2) is set to be higher than the color temperature of the second light emitting diode device (3).
    Type: Grant
    Filed: January 7, 2008
    Date of Patent: May 29, 2012
    Assignee: Showa Denko K.K.
    Inventor: Takaki Yasuda
  • Patent number: 8128252
    Abstract: A lighting fixture which comprises a ceiling frame equipped with an attachment portion, a hollow portion, and a storage recess, wherein the attachment portion is located at an upper end portion of the frame to be suspended from a ceiling of a building, the hollow portion is located below the attachment portion, and the storage recess is located below the hollow portion; the storage recess has an opening which faces downward, a lighting module is set in the storage recess; and the lighting module includes plural light emitting diodes, a reflector which reflects light emitted from the diodes, and a lighting housing to which the light emitting diodes and the reflector are installed.
    Type: Grant
    Filed: March 11, 2008
    Date of Patent: March 6, 2012
    Assignee: Showa Denko K.K.
    Inventors: Takaki Yasuda, Satoshi Shindo
  • Patent number: 8022419
    Abstract: A flip-chip type semiconductor light-emitting device having a positive electrode and a negative electrode similar in electrode area and capable of preventing the misalignment of the light-emitting device by utilizing the self alignment effect in manufacturing a light-emitting diode lamp and a printed circuit board for the flip-chip type semiconductor light-emitting device are provided. Furthermore, adopted are a flip-chip type semiconductor light-emitting device 1 which is provided with a negative electrode pad and a positive electrode pad formed on the side opposite the transparent substrate side of the semiconductor layer, wherein each of the electrode pads is formed in the same shape as each other and a printed circuit board for the light-emitting device has a pair of the electrode patterns which are formed in the same shape as each other. Still furthermore, a soldering film is included in each of the electrode pads.
    Type: Grant
    Filed: December 19, 2006
    Date of Patent: September 20, 2011
    Assignee: Showa Denko K.K.
    Inventors: Takaki Yasuda, Hideki Tomozawa
  • Patent number: 7875899
    Abstract: A light-emitting diode package 1 of the present invention is a light-emitting diode package including: a diode group 2D made of a plurality of light-emitting diode chips 2 connected in series and a lead group 3 connected to the diode group 2D, in which the lead group 3 includes: a pair of external leads 31 and 32 as terminals of the diode group 2D and auxiliary leads 33 the number of which is one less than that of the light-emitting diode chips 2, in which the plurality of the light-emitting diode chips 2 are arranged in one line on a first external lead 31 of the pair of external leads 31 and 32, in which the auxiliary leads 33 are arranged on one or both sides of a row made of the plurality of light-emitting diode chips 2, and in which the adjacent light-emitting diode chips 2 of the plurality of light-emitting diode chips 2 are connected in series via the auxiliary leads 33.
    Type: Grant
    Filed: January 7, 2008
    Date of Patent: January 25, 2011
    Assignee: Showa Denko K.K.
    Inventor: Takaki Yasuda