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: 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
  • Patent number: 10611895
    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 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 and 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: October 15, 2015
    Date of Patent: April 7, 2020
    Assignee: NJC EUROPE LIMITED
    Inventors: Estibaliz Santamaria, Hieu-Dinh Phan, Sukehiro Niga, Yohei Uchiyama
  • Publication number: 20200017657
    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: Application
    Filed: April 19, 2017
    Publication date: January 16, 2020
    Inventors: Estibaliz Santamaria, Hieu-Dinh Phan, Sukehiro Niga, Yohei Uchiyama
  • Publication number: 20200020932
    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: Application
    Filed: February 16, 2018
    Publication date: January 16, 2020
    Applicant: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Taisuke Asano, Yohei Uchiyama, Taisuke Yamamoto, Tatsuya Akira, Norihisa Yamamoto, Hiroshi Minami
  • Patent number: 10516158
    Abstract: The initial charge/discharge efficiency and cycle characteristics of a non-aqueous electrolyte secondary battery that contains a silicon material as a negative-electrode active material are improved. A negative-electrode active material particle (10) according to an embodiment contains a base particle (13), which includes a lithium silicate phase (11) represented by Li2zSiO(2+z) {0<z<2} and silicon particles (12) dispersed in the lithium silicate phase (11). The symmetry determined by an image analysis of a backscattered electron image of a cross section of the base particle (13) is 1.5 or less. The symmetry refers to the ratio (b/a) of the half width at half maximum b of a peak on the high-gray-scale side to the half width at half maximum a of the peak on the low-gray-scale side in a histogram of color distinction based on 256 gray levels for each pixel of the backscattered electron image.
    Type: Grant
    Filed: January 18, 2016
    Date of Patent: December 24, 2019
    Assignee: SANYO Electric Co., Ltd.
    Inventors: Norihisa Yamamoto, Taizou Sunano, Hiroshi Minami, Yoshio Kato, Yohei Uchiyama
  • Patent number: 10516153
    Abstract: The initial charge/discharge efficiency and cycle characteristics of a non-aqueous electrolyte secondary battery that contains a silicon material as a negative-electrode active material are improved. A negative-electrode active material particle (10) according to an embodiment includes a lithium silicate phase (11) represented by Li2zSiO(2+z) {0<z<2} and silicon particles (12) dispersed in the lithium silicate phase (11). The silicon particles (12) have a crystallite size of 40 nm or less. The crystallite size is calculated using the Scherrer equation from the half-width of the diffraction peak of the Si (111) plane in an XRD pattern obtained by XRD measurement of the negative-electrode active material particle 10.
    Type: Grant
    Filed: January 18, 2016
    Date of Patent: December 24, 2019
    Assignee: SANYO Electric Co., Ltd.
    Inventors: Taizou Sunano, Hiroshi Minami, Yoshio Kato, Yohei Uchiyama
  • Patent number: 10483528
    Abstract: The initial charge/discharge efficiency and cycle characteristics of a non-aqueous electrolyte secondary battery that contains a silicon material as a negative-electrode active material are improved. A negative-electrode active material particle (10) according to an embodiment contains a base particle (13), which includes a lithium silicate phase (11) represented by Li2zSiO(2+z) {0<z<2} and silicon particles (12) dispersed in the lithium silicate phase (11). The symmetry determined by an image analysis of a backscattered electron image of a cross section of the base particle (13) is 1.5 or less. The symmetry refers to the ratio (b/a) of the half width at half maximum b of a peak on the high-gray-scale side to the half width at half maximum a of the peak on the low-gray-scale side in a histogram of color distinction based on 256 gray levels for each pixel of the backscattered electron image.
    Type: Grant
    Filed: January 18, 2016
    Date of Patent: November 19, 2019
    Assignee: SANYO Electronics Co., Ltd.
    Inventors: Norihisa Yamamoto, Taizou Sunano, Hiroshi Minami, Yoshio Kato, Yohei Uchiyama
  • Publication number: 20190319261
    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: Application
    Filed: November 17, 2017
    Publication date: October 17, 2019
    Applicant: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Yohei Uchiyama, Taisuke Yamamoto, Tatsuya Akira, Norihisa Yamamoto, Hiroshi Minami
  • Publication number: 20190248980
    Abstract: A crystal nucleating agent for polyolefin resins includes at least a raw material crystal nucleating agent (a) as a component (A). The crystal nucleating agent for polyolefin resins may have an angle of repose of 48° or smaller, and a 1-mm-thick polyolefin resin molded article produced using the crystal nucleating agent for polyolefin resins may have a haze value of 12 or smaller as determined by a method in conformity with JIS K7136 (2000).
    Type: Application
    Filed: September 13, 2017
    Publication date: August 15, 2019
    Applicant: NEW JAPAN CHEMICAL CO., LTD.
    Inventors: Shohei Iwasaki, Yohei Uchiyama, Takayuki Maeda, Tomoyuki Miyata
  • Publication number: 20190219528
    Abstract: The present invention relates to a method for identifying a blend of nucleators which is advantageous for providing reduced haze in a nucleated polyolefin material compared to blends of the same nucleators having different weight ratios of components.
    Type: Application
    Filed: April 19, 2017
    Publication date: July 18, 2019
    Inventors: Estibaliz SANTAMARIA, Hieu-Dinh PHAN, Sukehiro NIGA, Yohei UCHIYAMA
  • Publication number: 20190194422
    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: Application
    Filed: August 8, 2017
    Publication date: June 27, 2019
    Applicant: NEW JAPAN CHEMICAL CO., LTD.
    Inventors: Shohei Iwasaki, Yohei Uchiyama, Kazuya Matsumoto, Takayuki Maeda
  • Publication number: 20170346066
    Abstract: The initial charge/discharge efficiency and cycle characteristics of a non-aqueous electrolyte secondary battery that contains a silicon material as a negative-electrode active material are improved. A negative-electrode active material particle (10) according to an embodiment includes a lithium silicate phase (11) represented by Li2zSiO(2+z) {0<z<2} and silicon particles (12) dispersed in the lithium silicate phase (11). The silicon particles (12) have a crystallite size of 40 nm or less. The crystallite size is calculated using the Scherrer equation from the half-width of the diffraction peak of the Si (111) plane in an XRD pattern obtained by XRD measurement of the negative-electrode active material particle 10.
    Type: Application
    Filed: January 18, 2016
    Publication date: November 30, 2017
    Applicant: Sanyo Electric Co., Ltd.
    Inventors: Taizou Sunano, Hiroshi Minami, Yoshio Kato, Yohei Uchiyama