Patents by Inventor Yohei Uchiyama

Yohei Uchiyama 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: 20220263066
    Abstract: A negative electrode material for a non-aqueous electrolyte secondary battery, including a silicate phase, silicon particles dispersed in the silicate phase, and a crystal phase dispersed in the silicate phase. The silicate phase contains at least one element E1 selected from the group consisting of alkali metal elements and Group 2 elements. The crystal phase contains a rare earth element, silicon, and oxygen.
    Type: Application
    Filed: July 21, 2020
    Publication date: August 18, 2022
    Applicant: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Taisuke Asano, Yohei Uchiyama, Yosuke Sato
  • Publication number: 20220190314
    Abstract: A negative electrode for a non-aqueous electrolyte secondary battery includes a negative electrode mixture comprising a negative electrode active material capable of electrochemically absorbing and releasing lithium ions, a negative electrode additive, and an acrylic resin. The negative electrode active material includes a silicon containing material. The Negative electrode additive includes at least silicon dioxide and a group 2 element oxide, and the group 2 element oxide includes at least one selected from the group consisting of BeO, MgO, CaO, SrO, BaO and RaO. The acrylic resin includes at least a (meth)acrylic acid salt unit. The content of the group 2 element oxide in the negative electrode additive is less than 20 mass % relative to a total amount of the negative electrode additive.
    Type: Application
    Filed: March 11, 2020
    Publication date: June 16, 2022
    Applicant: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Yohei Uchiyama, Taisuke Asano, Yosuke Sato, Masahiro Soga
  • Patent number: 11271197
    Abstract: Disclosed is a negative electrode material for a non-aqueous electrolyte secondary battery, including: a lithium silicate phase; silicon particles dispersed in the lithium silicate phase; and at least one element Me dispersed in the lithium silicate phase, and selected from the group consisting of a rare-earth element and an alkaline-earth metal. The composition of the lithium silicate phase is represented, for example, by the formula: Li2zSiO2+z, and satisfies 0<z<2, and the element Me is dispersed in the lithium silicate phase, for example, as an Me oxide.
    Type: Grant
    Filed: February 16, 2018
    Date of Patent: March 8, 2022
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Taisuke Asano, Yohei Uchiyama, Taisuke Yamamoto, Tatsuya Akira, Norihisa Yamamoto, Hiroshi Minami
  • Publication number: 20220048846
    Abstract: Provided is a metal salt of an alicyclic dicarboxylic acid with excellent dispersibility in polyolefin resins, and excellent crystallinity improving effect that is essential as a crystal nucleating agent for polyolefin resins, regardless of processing conditions. A method is also provided for producing the metal salt of an alicyclic dicarboxylic acid; a crystal nucleating agent containing the metal salt of an alicyclic dicarboxylic acid; a crystal nucleating agent composition for polyolefin resins containing the crystal nucleating agent and a fatty acid metal salt; a polyolefin resin composition containing the crystal nucleating agent; and a polyolefin resin molded article obtained using the polyolefin resin composition. Provided is a metal salt of an alicyclic dicarboxylic acid in which the alicyclic dicarboxylic acid is an alkyl substituent-containing cyclohexane-1,2-dicarboxylic acid, and the metal salt is a calcium salt, a hydroxyaluminum salt, a disodium salt, or a dilithium salt.
    Type: Application
    Filed: September 3, 2019
    Publication date: February 17, 2022
    Applicant: NEW JAPAN CHEMICAL CO., LTD.
    Inventors: Shohei Iwasaki, Kazuya Matsumoto, Mitsuko Inoue, Yurie Shinoda, Sachio Kitagawa, Yohei Uchiyama
  • Publication number: 20220029151
    Abstract: A negative electrode active material for a secondary battery includes a silicate composite particle. The silicate composite particle contains silicate phases, silicon particles dispersed in the silicate phases, and a carbon phase. The silicate phases contain at least one selected from the group consisting of an alkali metal and an alkaline earth metal. At least parts of the carbon phase coat at least parts of surfaces of the silicon particles.
    Type: Application
    Filed: December 4, 2019
    Publication date: January 27, 2022
    Applicant: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Yosuke Sato, Yohei Uchiyama, Taisuke Asano
  • Patent number: 11196040
    Abstract: Disclosed is a negative electrode material including: a lithium silicate phase that contains a lithium silicate; and silicon particles that are dispersed in the lithium silicate phase, wherein the silicon particles have a crystallite size of 10 nm or more, and the lithium silicate has a composition represented by the following formula: Li2Si2O5.(x?2)SiO2, where 2<x?18 is satisfied.
    Type: Grant
    Filed: November 17, 2017
    Date of Patent: December 7, 2021
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Yohei Uchiyama, Taisuke Yamamoto, Tatsuya Akira, Norihisa Yamamoto, Hiroshi Minami
  • Publication number: 20210320299
    Abstract: A negative electrode active material for a secondary battery includes silicate composite particles each of which contain a silicate phase and silicon particles dispersed in the silicate phase, the silicate phase is an oxide phase containing Si, O, and alkali metals, and the alkali metals include at least Na and K.
    Type: Application
    Filed: August 23, 2019
    Publication date: October 14, 2021
    Applicant: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Yohei Uchiyama, Taisuke Asano, Yosuke Sato
  • Publication number: 20210242453
    Abstract: A negative electrode active material for a secondary battery includes silicate composite particles each of which contain a silicate phase and silicon particles dispersed in the silicate phase, the silicate phase is an oxide phase containing Si, O, and alkali metals, and the alkali metals include at least K and Li.
    Type: Application
    Filed: August 23, 2019
    Publication date: August 5, 2021
    Applicant: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Yohei Uchiyama, Taisuke Asano, Yosuke Sato
  • Publication number: 20210202930
    Abstract: Negative electrode active material particles comprise base particles having: a silicate phase containing Li2O, SiO2, at least one oxide selected from M12O3, M2O2, M32O5, and M4O3 (where M1, M2, M3, and M4 are elements other than alkali metals, alkali earth metals, and Si), and a discretionary component MO (where M is an alkali earth metal); and silicon particles dispersed in the silicate phase. The element contents for the elements contained in the silicate phase are: 3-33 mol % of Li; 40-78 mol % of S; and 1-40 mol % of M1, M2, M3, and M4. If MO is contained, the M content in the silicate phase is 1-10 mol %.
    Type: Application
    Filed: September 26, 2018
    Publication date: July 1, 2021
    Applicant: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Norihisa Yamamoto, Yohei Uchiyama, Tatsuya Akira, Kazuro Hayashida
  • Publication number: 20210167372
    Abstract: A negative electrode active material according to one embodiment of the present disclosure comprises: a composite oxide phase that contains Li, Si, Al and B; and Si particles that are dispersed in the composite oxide phase. Relative to the total number of moles of elements (excluding O) contained in the composite, oxide phase, the content of Li is from 5% by mole to 20% by mole (inclusive), the content of Si is from 50% by mole to 70% by mole (inclusive), the content of Al is from 12% by mole to 25% by mole (inclusive), and the content of B is from 12% by mole to 25% by mole (inclusive).
    Type: Application
    Filed: August 1, 2019
    Publication date: June 3, 2021
    Applicant: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Toshiyuki Nakamori, Yasunobu Iwami, Mai Yokoi, Yohei Uchiyama
  • Publication number: 20210167367
    Abstract: A negative electrode active material for a secondary battery includes silicate composite particles each of which contain a silicate phase and silicon particles dispersed in the silicate phase, the silicate phase is an oxide phase containing Si, O, and alkali metals, the alkali metals include at least Na and Li, and an atomic ratio: Na/Li of Na to Li is 0.1 to 7.1.
    Type: Application
    Filed: August 23, 2019
    Publication date: June 3, 2021
    Applicant: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Yohei Uchiyama, Norihisa Yamamoto, Keita Okazaki
  • Publication number: 20210066716
    Abstract: This negative electrode active material for a secondary cell which is one aspect of the present disclosure comprises: a silicate phase that contains Li, Si, and Mx (Mx alkali metal, alkaline earth metal, and an element other than Si); silicon particles dispersed in the silicate phase; and oxide particles that contain Zr dispersed in the silicate phase. The content of each element with respect to the total of the elements other than oxygen in the silicate phase is 3 to 45 mol % for Li, 40 to 78 mol % for Si, and 1 to 40 mol % for Mx.
    Type: Application
    Filed: January 21, 2019
    Publication date: March 4, 2021
    Applicant: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Yohei Uchiyama, Norihisa Yamamoto, Tatsuya Akira
  • Publication number: 20210057727
    Abstract: A negative electrode active substance for a secondary battery, which is one embodiment of the present disclosure, comprises: a silicate phase which contains Li, Si and Mx (Mx is an alkali metal, an alkaline earth metal or an element other than Si); silicon particles dispersed in the silicate phase; and metal particles which are dispersed in the silicate phase and are constituted mainly from one or more metals selected from among Fe, Cr, Ni, Mn, Cu, Mo, Zn and Al or an alloy of these. In the silicate phase, the content of the following elements, relative to the total amount of elements other than oxygen, is: 3-45 mol % of Li; 40-78 mol % of Si; and 1-40 mol % of Mx.
    Type: Application
    Filed: January 21, 2019
    Publication date: February 25, 2021
    Applicant: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Tatsuya Akira, Yohei Uchiyama, Norihisa Yamamoto
  • Patent number: 10894874
    Abstract: The present invention aims to provide a method for improving the fluidity of a crystal nucleating agent for polyolefin resins without impairing other properties, and a polyolefin resin composition containing the crystal nucleating agent with improved fluidity and having excellent properties including transparency, and a molded article thereof. A crystal nucleating agent controlled to have specific characteristics can achieve improved fluidity, and the use of such a crystal nucleating agent having specific characteristics remarkably improves the workability during molding processing and provides a polyolefin resin composition excellent in properties such as transparency, and a molded article thereof.
    Type: Grant
    Filed: August 8, 2017
    Date of Patent: January 19, 2021
    Assignee: NEW JAPAN CHEMICAL CO., LTD.
    Inventors: Shohei Iwasaki, Yohei Uchiyama, Kazuya Matsumoto, Takayuki Maeda
  • Patent number: 10844195
    Abstract: The present invention relates to an additive composition and a low haze polyolefin material which may be prepared using said additive composition. In particular, the polyolefin material is prepared from a polyolefin resin composition comprising one or more optical brighteners, bis-3,4-dimethylbenzylidene sorbitol and bis-p-ethylbenzylidene sorbitol at a certain weight ratio. In an aspect, the present invention relates to a method for forming a polyolefin material; said method comprising: (i) preparing a polyolefin resin composition comprising polyolefin resin, one or more optical brighteners, bis-3,4-dimethylbenzylidene sorbitol and bis-p-ethylbenzylidene sorbitol, wherein the weight ratio of bis-3,4-dimethylbenzylidene sorbitol to bis-p-ethylbenzylidene sorbitol in the polyolefin resin composition is 45:55 to 25:75; (ii) processing said polyolefin resin composition to form said polyolefin material.
    Type: Grant
    Filed: April 19, 2017
    Date of Patent: November 24, 2020
    Assignee: NJC EUROPE LIMITED
    Inventors: Estibaliz Santamaria, Hieu-Dinh Phan, Sukehiro Niga, Yohei Uchiyama
  • Publication number: 20200365898
    Abstract: Negative electrode active material particles according to the present invention have composite particles that include: a sodium silicate phase with a Vickers hardness of 150 Hv or greater, and silicon particles dispersed in the sodium silicate phase.
    Type: Application
    Filed: October 26, 2018
    Publication date: November 19, 2020
    Applicant: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Yohei Uchiyama, Norihisa Yamamoto, Tatsuya Akira, Kazuro Hayashida
  • Publication number: 20200350563
    Abstract: A negative electrode active material for non-aqueous electrolyte secondary batteries, including: lithium silicate composite particles including a lithium silicate phase and silicon particles dispersed in the lithium silicate phase, the lithium silicate phase being an oxide phase including Li, Si, O, and M, where M is an element other than the following elements: Group 1 elements of alkali metals, Group 16 elements of oxygen group, Group 18 elements of rare gas, and Si. An amount of each element relative to a total amount of Li, Si and M in the lithium silicate phase is 3 to 55 mol % for Li, 25 mol % or more for Si, and 3 to 50 mol % for M. A carbon material is present inside the lithium silicate composite particles; and an area ratio of the carbon material occupying a cross section of the composite particles is 0.008 to 6%.
    Type: Application
    Filed: October 29, 2018
    Publication date: November 5, 2020
    Applicant: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Yohei Uchiyama, Norihisa Yamamoto, Tatsuya Akira
  • Publication number: 20200350591
    Abstract: A lithium battery including a negative electrode having a negative electrode active material layer that contains lithium silicate particles and a binder. The lithium silicate particles include composite particles including a lithium silicate phase and silicon particles dispersed in the lithium silicate phase, wherein a carbon material is present inside the composite particles, and an area ratio of the carbon material occupying a cross section of the composite particles is 0.008 to 6%. The binder includes at least a first resin, wherein the first resin is at least cue selected from the group consisting of polyacrylic acid, a polyacrylic acid salt, and their derivatives. The first resin is contained in an amount of 2 mass % or less in the negative electrode active material layer.
    Type: Application
    Filed: October 26, 2018
    Publication date: November 5, 2020
    Applicant: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Yohei Uchiyama, Taisuke Yamamoto, Tatsuya Akira, Norihisa Yamamoto, Hiroshi Minami
  • Publication number: 20200325150
    Abstract: The present invention aims to provide a method for improving the fluidity of a crystal nucleating agent for polyolefin resins without impairing other properties, and a polyolefin resin composition containing the crystal nucleating agent with improved fluidity and having excellent properties including transparency, and a molded article thereof. Adjustment to specific characteristics can improve the fluidity of a crystal nucleating agent for polyolefin resins, and the use of such a crystal nucleating agent having specific characteristics remarkably improves the workability during molding processing and provides a polyolefin resin composition excellent in properties such as transparency, and a molded article thereof.
    Type: Application
    Filed: July 21, 2017
    Publication date: October 15, 2020
    Applicant: NEW JAPAN CHEMICAL CO., LTD.
    Inventors: Shohei Iwasaki, Yohei Uchiyama, Kazuya Matsumoto, Mitsuko Inoue, Yurie Shinoda, Takayuki Maeda
  • Publication number: 20200321611
    Abstract: A negative electrode active substance particle according to one embodiment of the present invention, comprises a mother particle that has: a silicate phase that includes Na, Si, and at least one element selected from M, M1, M2, M3 and M4 (M is an alkali earth metal, and M1, M2, M3 and M4 are elements other than alkali metals, alkali earth metals or Si); and silicon particles dispersed in the silicate phase. The contents of the elements in the silicate phase are: 9-52 mol % of Na; 3-50 mol % of M, M1, M2, M3 and M4; and at least 25 mol % of Si.
    Type: Application
    Filed: December 26, 2018
    Publication date: October 8, 2020
    Applicant: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Yohei Uchiyama, Norihisa Yamamoto, Tatsuya Akira