Patents by Inventor Ryuto SAKAMOTO

Ryuto SAKAMOTO 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: 11978909
    Abstract: An electrode structure includes a positive electrode layer and a positive electrode collector member. The positive electrode collector member includes a positive electrode collector foil, a carbon film, and a hot melt adhesive agent. A positive electrode total specific surface area is more than or equal to 2.2 m2/g and less than or equal to 3.0 m2/g, the positive electrode total specific surface area being represented by a total of a product of weight ratio and specific surface area of a positive electrode active material, a product of weight ratio and specific surface area of a solid electrolyte, and a product of weight ratio and specific surface area of a conductive material. A softening point of the hot melt adhesive agent is more than or equal to 100° C. and less than or equal to 130° C.
    Type: Grant
    Filed: June 23, 2021
    Date of Patent: May 7, 2024
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Hideki Hagiwara, Ryuto Sakamoto
  • Publication number: 20240142529
    Abstract: A method of producing an all-solid-state battery includes forming an insulating layer-attached stack unit including an insulating layer and a stack unit that includes a positive electrode layer, a solid electrolyte layer and a negative electrode layer; performing a dielectric breakdown test on the insulating layer included in the insulating layer-attached stack unit, and determining that the insulating layer-attached stack unit is a non-defective product if no dielectric breakdown is present; forming an electrode member having both ends by disposing the two insulating layer-attached stack units at the both ends, the insulating layer-attached stack unit being determined to be a non-defective product; accommodating the electrode member in a case; and assembling a restraint member to the outside of the case to produce an all-solid-state battery.
    Type: Application
    Filed: January 9, 2024
    Publication date: May 2, 2024
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Ryuto Sakamoto
  • Patent number: 11961973
    Abstract: The all-solid-state secondary battery of the disclosure comprises a positive electrode collector layer, a positive electrode layer, a solid electrolyte layer, a negative electrode layer and a negative electrode collector layer stacked in that order, wherein the positive electrode layer has a positive electrode active material layer and an insulating layer disposed around the perimeter edges of the positive electrode active material layer, and when the all-solid-state secondary battery is viewed from the stacking direction, the outer edges of the positive electrode active material layer on the solid electrolyte layer side are further inward than the outer edges of the positive electrode active material layer on the positive electrode collector layer side, and the outer edges of the positive electrode collector layer are further inward than the outer edges of the positive electrode active material layer on the positive electrode collector layer side.
    Type: Grant
    Filed: November 23, 2021
    Date of Patent: April 16, 2024
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Ryuto Sakamoto
  • Patent number: 11941186
    Abstract: Provided is an electronic pen including a rod-shaped core body having conductivity, a pen pressure transmitter which is connected to the core body and has conductivity and which, in operation, transmits a pen pressure applied to the core body to a pen pressure detector, and a signal transmitter which, in operation, generates a signal to be transmitted from the core body, in which the pen pressure transmitter includes a shock-absorbing mechanism which, in operation, when the pen pressure applied to the core body has a predetermined value or more, absorbs the pen pressure, and the signal from the signal transmitter, in operation, is supplied to the core body through the pen pressure transmitter and transmitted to an outside of the electronic pen through the core body.
    Type: Grant
    Filed: November 9, 2022
    Date of Patent: March 26, 2024
    Assignee: Wacom Co., Ltd.
    Inventors: Ryuto Sakamoto, Shinya Aoki
  • Patent number: 11906592
    Abstract: A method of producing an all-solid-state battery includes forming an insulating layer-attached stack unit including an insulating layer and a stack unit that includes a positive electrode layer, a solid electrolyte layer and a negative electrode layer; performing a dielectric breakdown test on the insulating layer included in the insulating layer-attached stack unit, and determining that the insulating layer-attached stack unit is a non-defective product if no dielectric breakdown is present; forming an electrode member having both ends by disposing the two insulating layer-attached stack units at the both ends, the insulating layer-attached stack unit being determined to be a non-defective product; accommodating the electrode member in a case; and assembling a restraint member to the outside of the case to produce an all-solid-state battery.
    Type: Grant
    Filed: July 15, 2021
    Date of Patent: February 20, 2024
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Ryuto Sakamoto
  • Publication number: 20230238515
    Abstract: A positive electrode includes a positive electrode current collector, an adhesive layer, and a positive electrode layer. The positive electrode current collector, the adhesive layer, and the positive electrode layer are stacked in this order. The adhesive layer contains spherical carbon and fibrous carbon as an electrically conductive material, and contains an acrylic binder as an adhesive.
    Type: Application
    Filed: December 9, 2022
    Publication date: July 27, 2023
    Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, Panasonic Holdings Corporation
    Inventors: Ryuto SAKAMOTO, Kenji NAGAO, Izuru SASAKI, Yusuke NISHIO, Hiroki KAMITAKE
  • Publication number: 20230238537
    Abstract: An electrode for an all-solid-state battery includes a current collector, a carbon material layer having an adhesive property, and an active material layer in this order in the thickness direction, and the carbon material layer contains a carbon material, a dispersion material, and a binder.
    Type: Application
    Filed: December 8, 2022
    Publication date: July 27, 2023
    Inventors: Ryuto SAKAMOTO, Hirotomo ITO, Soichiro FUKAGAWA
  • Publication number: 20230142712
    Abstract: An electrode for all-solid-state batteries, the electrode comprising a collector and an electrode layer, wherein a contact surface of the collector with the electrode layer and a contact surface of the electrode layer with the collector, are attached by an adhesive layer; wherein the adhesive layer is composed of adhesive lines disposed in stripes between the contact surfaces; wherein a ratio (B/A) of a width B (mm) of the applied adhesive lines to an electrical conductivity A (mS) of the electrode layer, is 75.00 or less; wherein a distance C (mm) between the adjacent adhesive lines is more than 0.2 mm and is 7 mm or less; and wherein a ratio (B/C) of the width B of the applied adhesive lines to the distance C between the adjacent adhesive lines, is 2.00 or less.
    Type: Application
    Filed: November 3, 2022
    Publication date: May 11, 2023
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Ryuto SAKAMOTO, Nobuhiro TSUJI, Tetsuya NAOKI, Yasuo ISHII
  • Publication number: 20230077162
    Abstract: Provided is an electronic pen including a rod-shaped core body having conductivity, a pen pressure transmitter which is connected to the core body and has conductivity and which, in operation, transmits a pen pressure applied to the core body to a pen pressure detector, and a signal transmitter which, in operation, generates a signal to be transmitted from the core body, in which the pen pressure transmitter includes a shock-absorbing mechanism which, in operation, when the pen pressure applied to the core body has a predetermined value or more, absorbs the pen pressure, and the signal from the signal transmitter, in operation, is supplied to the core body through the pen pressure transmitter and transmitted to an outside of the electronic pen through the core body.
    Type: Application
    Filed: November 9, 2022
    Publication date: March 9, 2023
    Inventors: Ryuto SAKAMOTO, Shinya AOKI
  • Patent number: 11476497
    Abstract: According to an aspect of the present invention, provided is a sulfide solid-state battery including a negative electrode current collector that contains copper, and a negative electrode mixture layer that contains a negative electrode active material, a sulfide solid electrolyte material, and an oxide solid electrolyte material. Assuming that the negative electrode mixture layer is virtually divided into two portions in a thickness direction, the upper layer portion contains a larger amount of the sulfide solid electrolyte material than the lower layer portion, and the lower layer portion contains a larger amount of the oxide solid electrolyte material than the upper layer portion.
    Type: Grant
    Filed: May 13, 2019
    Date of Patent: October 18, 2022
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Ryuto Sakamoto
  • Publication number: 20220294019
    Abstract: The present disclosure is directed to an all solid state battery including an electrode body A and an electrode body B connected in parallel and stacked along a thickness direction. The electrode body A includes a Si based active material, and the electrode body B includes an anode active material B having lower expansion/contraction than the Si based active material. A proportion of a capacity of the electrode body A with respect to a capacity of a total of the electrode body A and the electrode body B is 25% or more and 60% or less.
    Type: Application
    Filed: March 4, 2022
    Publication date: September 15, 2022
    Inventor: Ryuto Sakamoto
  • Publication number: 20220173440
    Abstract: The all-solid-state secondary battery of the disclosure comprises a positive electrode collector layer, a positive electrode layer, a solid electrolyte layer, a negative electrode layer and a negative electrode collector layer stacked in that order, wherein the positive electrode layer has a positive electrode active material layer and an insulating layer disposed around the perimeter edges of the positive electrode active material layer, and when the all-solid-state secondary battery is viewed from the stacking direction, the outer edges of the positive electrode active material layer on the solid electrolyte layer side are further inward than the outer edges of the positive electrode active material layer on the positive electrode collector layer side, and the outer edges of the positive electrode collector layer are further inward than the outer edges of the positive electrode active material layer on the positive electrode collector layer side.
    Type: Application
    Filed: November 23, 2021
    Publication date: June 2, 2022
    Inventor: Ryuto SAKAMOTO
  • Publication number: 20220100291
    Abstract: An electronic pen is provided that is enhanced in strength such as not to be bent or broken even when made to be thinner (smaller in diametric size). A connection section holds a core body at one end thereof and holds a circuit board at the other end thereof. The circuit board is accommodated in a board protecting pipe, which is fitted to the connection section. The board protecting pipe is provided with a side opening, and an operation on an electronic part on the circuit board accommodated therein and a work on an electronic circuit formed on the circuit board can be performed through the side opening. An electronic pen main body section wherein the core body and the circuit board and the board protecting pipe are united together through the connection section is accommodated in a casing, to constitute the electronic pen.
    Type: Application
    Filed: November 23, 2021
    Publication date: March 31, 2022
    Inventors: Takenori KANEDA, Kenichi NINOMIYA, Takayuki ARAI, Kohei TANAKA, Ryuto SAKAMOTO
  • Patent number: 11237652
    Abstract: An electronic pen includes an electrically conductive coil spring that expands and contracts, a core body having electrical conductivity, a writing pressure detector having a fitting part fitted to an end of the core body on a side of the core body that is opposite to a side of the core body that includes a pen tip, and an electronic circuit that includes an oscillating circuit. The electronic circuit, in operation, causes a detection result from the writing pressure detector to be included in a signal from the oscillating circuit. The core body penetrates through a center axis of the coil spring and is not biased by the coil spring, and a first end of the coil spring on a side of the coil spring adjacent to the pen tip is connected to the core body and a second end of the coil spring is connected to the electronic circuit.
    Type: Grant
    Filed: October 26, 2020
    Date of Patent: February 1, 2022
    Assignee: Wacom Co., Ltd.
    Inventors: Kohei Tanaka, Kenichi Ninomiya, Ryuto Sakamoto
  • Publication number: 20220018908
    Abstract: A method of producing an all-solid-state battery includes forming an insulating layer-attached stack unit including an insulating layer and a stack unit that includes a positive electrode layer, a solid electrolyte layer and a negative electrode layer; performing a dielectric breakdown test on the insulating layer included in the insulating layer-attached stack unit, and determining that the insulating layer-attached stack unit is a non-defective product if no dielectric breakdown is present; forming an electrode member having both ends by disposing the two insulating layer-attached stack units at the both ends, the insulating layer-attached stack unit being determined to be a non-defective product; accommodating the electrode member in a case; and assembling a restraint member to the outside of the case to produce an all-solid-state battery.
    Type: Application
    Filed: July 15, 2021
    Publication date: January 20, 2022
    Inventor: Ryuto Sakamoto
  • Publication number: 20220006094
    Abstract: An electrode structure includes a positive electrode layer and a positive electrode collector member. The positive electrode collector member includes a positive electrode collector foil, a carbon film, and a hot melt adhesive agent. A positive electrode total specific surface area is more than or equal to 2.2 m2/g and less than or equal to 3.0 m2/g, the positive electrode total specific surface area being represented by a total of a product of weight ratio and specific surface area of a positive electrode active material, a product of weight ratio and specific surface area of a solid electrolyte, and a product of weight ratio and specific surface area of a conductive material. A softening point of the hot melt adhesive agent is more than or equal to 100° C. and less than or equal to 130° C.
    Type: Application
    Filed: June 23, 2021
    Publication date: January 6, 2022
    Inventors: Hideki Hagiwara, Ryuto Sakamoto
  • Patent number: 11216088
    Abstract: An electronic pen is provided that is enhanced in strength such as not to be bent or broken even when made to be thinner (smaller in diametric size). A connection section holds a core body at one end thereof and holds a circuit board at the other end thereof. The circuit board is accommodated in a board protecting pipe, which is fitted to the connection section. The board protecting pipe is provided with a side opening, and an operation on an electronic part on the circuit board accommodated therein and a work on an electronic circuit formed on the circuit board can be performed through the side opening. An electronic pen main body section wherein the core body and the circuit board and the board protecting pipe are united together through the connection section is accommodated in a casing, to constitute the electronic pen.
    Type: Grant
    Filed: July 26, 2018
    Date of Patent: January 4, 2022
    Assignee: Wacom Co., Ltd.
    Inventors: Takenori Kaneda, Kenichi Ninomiya, Takayuki Arai, Kohei Tanaka, Ryuto Sakamoto
  • Publication number: 20210041964
    Abstract: An electronic pen includes an electrically conductive coil spring that expands and contracts, a core body having electrical conductivity, a writing pressure detector having a fitting part fitted to an end of the core body on a side of the core body that is opposite to a side of the core body that includes a pen tip, and an electronic circuit that includes an oscillating circuit. The electronic circuit, in operation, causes a detection result from the writing pressure detector to be included in a signal from the oscillating circuit. The core body penetrates through a center axis of the coil spring and is not biased by the coil spring, and a first end of the coil spring on a side of the coil spring adjacent to the pen tip is connected to the core body and a second end of the coil spring is connected to the electronic circuit.
    Type: Application
    Filed: October 26, 2020
    Publication date: February 11, 2021
    Inventors: Kohei Tanaka, Kenichi Ninomiya, Ryuto Sakamoto
  • Publication number: 20200280102
    Abstract: An all-solid-state battery includes two or more stacked battery units stacked together and having a monopolar structure. The stacked battery unit includes a first current collector layer, a first active substance layer, a solid electrolyte layer, a second active substance layer, a second current collector layer, a second active substance layer, a solid electrolyte layer, a first active substance layer, and a first current collector layer, which are stacked in this order. The first current collector layer and the first active substance layer that are stacked adjacently are bonded together with an adhesive.
    Type: Application
    Filed: February 18, 2020
    Publication date: September 3, 2020
    Inventors: Ryuto SAKAMOTO, Kazuhiro SUZUKI
  • Publication number: 20200266448
    Abstract: A main object of the present disclosure is to provide an electrode wherein contact resistance between a modifying layer and an active material layer, under low confining pressure condition, is low. In the present disclosure, the above object is achieved by providing an electrode used for an all solid state battery, and the electrode comprises a current collector, a modifying layer including a polymer and a conductive auxiliary material, and an active material layer, in this order, and when a volume resistivity value of the modifying layer is regarded as RA, and a volume resistivity value of the active material layer is regarded as RB, RB/RA is 8×103 or less, and the RB is 40 ?·cm or less.
    Type: Application
    Filed: February 12, 2020
    Publication date: August 20, 2020
    Inventors: Naoki OSADA, Ryuto SAKAMOTO, Naohiro MASHIMO, Hideki HAGIWARA