Patents by Inventor Shin Takahashi

Shin Takahashi 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: 9954230
    Abstract: A current collector for a lithium ion secondary battery, on which an electrode mixture layer is formed, satisfies A?0.10 ?m and 6?(B/A)?15 when assuming that a three-dimensional center plane average roughness SRa of a surface of at least one side of the current collector on which the electrode mixture layer is formed is A and a ratio of an actual surface area of the surface of at least one side of the current collector to a geometric area of the surface of at least one side of the current collector, which is (actual surface area)/(geometric area), is B.
    Type: Grant
    Filed: June 16, 2014
    Date of Patent: April 24, 2018
    Assignee: HITACHI METALS, LTD.
    Inventors: Tatsuya Toyama, Shin Takahashi, Atsushi Okamoto
  • Publication number: 20180019041
    Abstract: There is provided a grommet with water-blocking performance improved by suppression of deformation of a rear end caused by deformation of a fastening fixing portion. The grommet includes: a rear band mounting portion 415 which fastens and fixes a portion displaced from the rear end and overlapping a corrugated tube 5 fitted in the grommet by using a band-shaped binding band 8; and a plurality of rear end-side annular protruding portion 411, first fixed-side annular protruding portion 412, and second fixed-side annular protruding portion 413 protruding from an inner peripheral face and extending in a circumferential direction and disposed along a front-rear direction X so as to be fitted with the corrugated tube 5 by use of protruding and recessed shapes.
    Type: Application
    Filed: September 26, 2017
    Publication date: January 18, 2018
    Applicants: FURUKAWA ELECTRIC CO., LTD., FURUKAWA AUTOMOTIVE SYSTEMS INC.
    Inventors: Shin TAKAHASHI, Kotaro TOMITA, Masanori UCHIBORI, Sumio OWARI
  • Publication number: 20170356051
    Abstract: The present invention relates to a method for predicting responsiveness to cancer drug therapy for colorectal cancer. More particularly, the present invention relates to a method for predicting the responsiveness of a colorectal cancer patient to cancer drug therapy, the method comprising analyzing the level of DNA methylation in a specimen comprising a colorectal cancer tissue, colorectal cancer cells, or colorectal cancer cell-derived DNA of a subject, and then determining the responsiveness of the subject to cancer drug therapy based on the level of DNA methylation.
    Type: Application
    Filed: October 16, 2015
    Publication date: December 14, 2017
    Inventors: Chikashi ISHIOKA, Shin TAKAHASHI, Kouta OUCHI, Hideki SHIMODAIRA, Hiroyuki ABURATANI
  • Publication number: 20170358799
    Abstract: A positive-electrode material for a lithium ion secondary battery contains a lithium complex compound that is represented by the formula: Li1+aNibMncCodTieMfO2+?, and has an atomic ratio Ti3+/Ti4+ between Ti3+ and Ti4+, as determined through X-ray photoelectron spectroscopy, of greater than or equal to 1.5 and less than or equal to 20. In the formula, M is at least one element selected from the group consisting of Mg, Al, Zr, Mo, and Nb, and a, b, c, d, e, f, and ? are numbers satisfying ?0.1?a?0.2, 0.7<b?0.9, 0?c<0.3, 0?d<0.3, 0<e?0.25, 0?f<0.3, b+c+d+e+f=1, and ?0.2???0.2.
    Type: Application
    Filed: November 9, 2016
    Publication date: December 14, 2017
    Applicant: HITACHI METALS, LTD.
    Inventors: Akira GUNJI, Hisato TOKORO, Shin TAKAHASHI, Tatsuya TOYAMA, Hiroshi HARUNA, Daiko TAKAMATSU, Takashi NAKABAYASHI, Shuichi TAKANO
  • Publication number: 20160276664
    Abstract: An object of the present invention is to provide lithium ion secondary batteries having cycle characteristics as well as high energy density and rate characteristics during high-potential charging of a layered compound. The following is provided, a positive electrode active material for lithium ion secondary batteries, comprising particles each having: a core part comprising a lithium metal composite oxide; and a surface layer part comprising a lithium metal composite oxide having a composition differing from that in the core part, the surface layer part being formed on the surface of the core part, wherein both the core part and the surface layer part have a layered structure, the surface layer part contains Ni, Mn, and Li, and Ni/Mn mole ratio in the surface is less than 1.
    Type: Application
    Filed: February 13, 2015
    Publication date: September 22, 2016
    Applicant: HITACHI METALS, LTD.
    Inventors: Akira GUNJI, Sho FURUTSUKI, Shin TAKAHASHI, Takashi NAKABAYASHI, Shuichi TAKANO, Hisato TOKORO
  • Publication number: 20160237098
    Abstract: Provided are a lithium secondary battery having improved initial capacity and excellent cycle property, an electrolyte solution for the lithium secondary battery, and an additive for the electrolyte solution for the lithium secondary battery. The lithium secondary battery includes positive and negative electrodes both having a lithium-ion intercalation/de-intercalation ability, and a non-aqueous electrolyte solution contacted with the positive and negative electrodes. The non-aqueous electrolyte solution contains lithium hexafluorophosphate and a boroxine compound represented by (RO)3(BO)3 liquefying at 25° C. R(s) each independently represent an organic group of a linear chain alkyl group having 3 or more carbon atoms. Herein, the chain alkyl group may have a branch, and when the branch is included, the number of carbon atoms of the chain alkyl group constructing a linear portion thereof is 3 or more.
    Type: Application
    Filed: February 18, 2016
    Publication date: August 18, 2016
    Applicant: HITACHI, LTD.
    Inventors: Hiroshi HARUNA, Shin TAKAHASHI, Toshio ABE, Yasutaka TANAKA
  • Publication number: 20160156020
    Abstract: Provided is a method for manufacturing a cathode electrode material, including the step of performing calcination of a mixture of lithium carbonate and a compound containing Ni, and capable of mass-producing a cathode electrode material including a lithium composite oxide with high Ni concentration industrially. The manufacturing method includes a mixture step of mixing lithium carbonate and a compound including Ni, and a calcination step of performing calcination of a mixture obtained in the mixture step under oxidizing atmosphere to obtain a lithium composite compound with high Ni concentration. The calcination step includes: a first heat treatment step to obtain a first precursor; a second heat treatment step of performing heat treatment of the first precursor to obtain a second precursor; and a third heat treatment step of performing heat treatment of the second precursor to obtain the lithium composite compound.
    Type: Application
    Filed: November 10, 2015
    Publication date: June 2, 2016
    Applicant: HITACHI METALS, LTD.
    Inventors: Hisato TOKORO, Akira GUNJI, Tatsuya TOYAMA, Xiaoliang FENG, Mitsuru KOBAYASHI, Shin TAKAHASHI, Shuichi TAKANO, Takashi NAKABAYASHI, Sho FURUTSUKI
  • Publication number: 20160118648
    Abstract: A compound having a layered structure that is used for a positive electrode active material for a lithium ion secondary battery achieves both a high energy density and a high cyclability. The positive electrode active material for a lithium ion secondary battery contains a compound having a layered structure belonging to a space group R-3m, in which the compound having a layered structure is represented by a compositional formula: Li1+aM1O2+?wherein M1 represents a metal element or metal elements other than Li, and contains at least Ni, ?0.03?a?0.10, and ?0.1<?<0.1, a proportion of Ni in M1 is larger than 70 atom %, and a site occupancy of a transition metal or transition metals at a 3a site obtained by structural analysis by a Rietveld method is less than 2%, and a content of residual lithium hydroxide in the positive electrode active material is 1 mass % or less.
    Type: Application
    Filed: October 2, 2015
    Publication date: April 28, 2016
    Applicant: HITACHI METALS, LTD.
    Inventors: Akira GUNJI, Tatsuya TOYAMA, Shin TAKAHASHI, Takashi NAKABAYASHI, Shuichi TAKANO, Xiaoliang FENG, Sho FURUTSUKI, Hisato TOKORO
  • Publication number: 20160099460
    Abstract: A positive electrode active material includes a primary particle represented by Compositional Formula (1): Li1+xNiyCozM1?x?y?zO2 (1), where x is a number satisfying a relation represented by an expression ?0.12?x?0.2; y is a number satisfying a relation represented by an expression 0.7?y?0.9; z is a number satisfying a relation represented by an expression 0.05?z?0.3; and M is at least one element selected from the group consisting of Mg, Al, Ti, Mn, Zr, Mo, and Nb; or a secondary particle into which the primary particle aggregates. The primary particle or the secondary particle includes a free lithium compound in a weight proportion of 0.1% or more and 2.0% or less, and the weight of lithium hydroxide in the free lithium compound is 60% or less of the weight of lithium carbonate in the free lithium compound.
    Type: Application
    Filed: September 29, 2015
    Publication date: April 7, 2016
    Applicant: HITACHI METALS, LTD.
    Inventors: Tatsuya TOYAMA, Shin TAKAHASHI, Akira GUNJI, Xiaoliang FENG, Hisato TOKORO, Takashi NAKABAYASHI, Shuichi TAKANO, Sho FURUTSUKI
  • Publication number: 20160087280
    Abstract: A current collector for a lithium ion secondary battery, on which an electrode mixture layer is formed, satisfies A?0.10 ?m and 6?(B/A)?15 when assuming that a three-dimensional center plane average roughness SRa of a surface of at least one side of the current collector on which the electrode mixture layer is formed is A and a ratio of an actual surface area of the surface of at least one side of the current collector to a geometric area of the surface of at least one side of the current collector, which is (actual surface area)/(geometric area), is B.
    Type: Application
    Filed: June 16, 2014
    Publication date: March 24, 2016
    Applicant: HITACHI METALS, LTD.
    Inventors: Tatsuya TOYAMA, Shin TAKAHASHI, Atsushi OKAMOTO
  • Patent number: 9224512
    Abstract: A positive electrode active material for a non-aqueous secondary battery having high capacity and high rate characteristics is intended to be provided. Further, a positive electrode for a non-aqueous secondary battery and a non-aqueous secondary battery are intended to be provided by using the positive electrode active material. The positive electrode active material for the non-aqueous secondary battery contains a lithium composite oxide having an olivine structure represented by the chemical formula: Li1+AMnXM1?X(PO4)1+B in which A>0, B>0, M represents a metal element, M in the chemical formula is one or more metal elements selected from Fe, Ni, Co, Ti, Cu, Zn, Mg, V, and Zr, the ratio A/B in the chemical formula is within a range of: 2<A/B?7, and the value of X is within a range of: 0.3?X<1.
    Type: Grant
    Filed: January 29, 2014
    Date of Patent: December 29, 2015
    Assignee: Hitachi Metals, Ltd.
    Inventors: Takashi Nakabayashi, Shin Takahashi, Kan Kitagawa, Toyotaka Yuasa, Shuichi Takano, Mitsuru Kobayashi
  • Publication number: 20150188139
    Abstract: Provided is a positive electrode active material for lithium secondary batteries, which uses a highly safe polyanion compound and has high capacity, high rate characteristics and high energy density. A positive electrode active material for lithium secondary batteries, which contains polyanion compound particles coated with carbon. This positive electrode active material for lithium secondary batteries is characterized in that: the polyanion compound has a structure represented by chemical formula (1); the roughness factor of the polyanion compound, said roughness factor being represented by formula (1), is 1-2; and the average primary particle diameter of the polyanion compound is 10-150 nm. LixMAyOz (chemical formula (1)) (In chemical formula (1), M comprises at least one transition metal element; A represents a typical element that combines with oxygen (O) and forms an anion; 0<x?2, 1?y?2 and 3?z?7.
    Type: Application
    Filed: July 25, 2013
    Publication date: July 2, 2015
    Inventors: Kan Kitagawa, Shuichi Takano, Toyotaka Yuasa, Shin Takahashi, Takashi Nakabayashi, Mitsuru Kobayashi
  • Patent number: 9023522
    Abstract: A cathode for a lithium-ion secondary battery is provided, which not only efficiently absorbs oxygen released from a solid solution based cathode active material when initial charging is applied but prevents a cathode energy density from lowering. Further, a lithium-ion secondary battery, a vehicle and a power storage system equipped with the lithium-ion secondary battery are provided. The cathode for a lithium-ion secondary battery comprises a cathode active material represented by the general formula: xLi2MO3-(1?x)LiM?O2 (where 0<x<1; M is at least one element selected from the group of Mn, Ti and Zr; and M? is at least one element selected from the group of Ni, Co, Mn, Fe, Ti, Zr, Al, Mg, Cr and V), and an oxygen absorbing substance having both oxygen absorbing and lithium-ion intercalation/de-intercalation abilities. Herein, the oxygen absorbing substance is disposed on the cathode active material.
    Type: Grant
    Filed: February 24, 2011
    Date of Patent: May 5, 2015
    Assignee: Hitachi, Ltd.
    Inventors: Akira Gunji, Shin Takahashi, Takashi Naito, Tadashi Fujieda
  • Publication number: 20150056502
    Abstract: Disclosed is an electrolyte solution used for a lithium secondary battery having high capacity, less undergoing aging deterioration of capacity, and also excellent in life characteristic. The electrolyte solution used for a lithium secondary battery contains a compound having a trivalent or higher boron formed by incorporation of a boroxine compound represented by (RO)3(BO)3 in which R(s) each represent independently an organic group of 1 to 6 carbon atoms and LiPF6, and a non-aqueous solvent.
    Type: Application
    Filed: August 12, 2014
    Publication date: February 26, 2015
    Applicant: Hitachi, Ltd.
    Inventors: Hiroshi HARUNA, Shin TAKAHASHI, Kazushige KOHNO, Yasutaka TANAKA
  • Patent number: 8911901
    Abstract: The object of the present invention is to inhibit occurrence of structural collapse caused by volumetric change of primary particles of negative electrode active material and to improve adhesion between negative electrode active material and electrically conductive agent and between negative electrode mix layer and collector, whereby improvement of life is attained in negative electrode for non-aqueous secondary battery and non-aqueous secondary battery. In the negative electrode for non-aqueous secondary battery of the present invention, the negative electrode active material comprises silicon and/or tin, and at least one element selected from elements which do not react with lithium and has pores in both of the inner core portion and the outer peripheral portion of primary particles and a material which cures by a heat treatment is used as a binder.
    Type: Grant
    Filed: February 14, 2012
    Date of Patent: December 16, 2014
    Assignee: Hitachi, Ltd.
    Inventors: Takashi Nakabayashi, Shin Takahashi
  • Publication number: 20140356717
    Abstract: The present invention is directed to a lithium ion secondary battery positive electrode, a lithium ion secondary battery, a vehicle mounting the same, and an electric power storage system, which improve the electron conductivity even inside an active material formed into a secondary particle.
    Type: Application
    Filed: November 21, 2012
    Publication date: December 4, 2014
    Inventors: Akira Gunji, Shin Takahashi, Hiroaki Konishi, Xiaoliang Feng, Takuya Aoyagi
  • Patent number: 8895186
    Abstract: It is an objective of the present invention to provide a lithium-ion rechargeable battery anode which can control the volume change of a primary particle of a negative-electrode active material other than a carbon-based material and that can prevent cracks due to stress caused by the volume change from occurring and extending. There is provided an anode for a lithium-ion rechargeable battery including a primary particle of a negative-electrode active material, a conductive material, and a binder, the negative-electrode active material including at least one of silicon and tin, and at least one element selected from elements that do not chemically react with lithium, in which holes are present both in an inner core region in the central region of the primary particle of the negative-electrode active material and in a periphery region that covers the inner core region.
    Type: Grant
    Filed: May 27, 2011
    Date of Patent: November 25, 2014
    Assignee: Hitachi, Ltd.
    Inventors: Takashi Nakabayashi, Shin Takahashi, Motoki Ohta, Yoshihito Yoshizawa
  • Patent number: 8883358
    Abstract: An object of the invention is to reduce the charging overvoltage by using a positive electrode member which does not contain a carbon material that causes the generation of lithium carbonate (Li2CO3), and which comprises a metal porous material, thereby suppressing the formation of lithium carbonate (Li2CO3). The metal air secondary battery of the invention is characterized by having a negative electrode member which has metal ions occluded therein and emits metal ions, a positive electrode member which ionizes oxygen, and a separator which is impregnated with an electrolyte and disposed between the negative electrode member and the positive electrode member, wherein the carbon weight in the total weight of a carrier, a catalyst, and a binder constituting the positive electrode member is 50% or less.
    Type: Grant
    Filed: July 2, 2010
    Date of Patent: November 11, 2014
    Assignee: Hitachi, Ltd.
    Inventors: Shin Takahashi, Kazuhiro Yoshida, Kazushige Kohno
  • Patent number: 8828584
    Abstract: A lithium-ion rechargeable battery module having a plurality of lithium-ion battery cells, arranged that battery cells located at an high temperature portion of the module are electrically connected in parallel with battery cells located at a low temperature portion of the module. The battery cells at the high temperature portion have a higher electric resistance at 20° C. and a better high-temperature storage characteristic at 50° C. than those of the battery cells located at the low temperature portion.
    Type: Grant
    Filed: April 10, 2012
    Date of Patent: September 9, 2014
    Assignee: Hitachi, Ltd.
    Inventors: Akira Gunji, Shin Takahashi, Hiroshi Iwasawa, Shin Yamauchi, Takefumi Okumura
  • Publication number: 20140209832
    Abstract: A positive electrode active material for a non-aqueous secondary battery having high capacity and high rate characteristics is intended to be provided. Further, a positive electrode for a non-aqueous secondary battery and a non-aqueous secondary battery are intended to be provided by using the positive electrode active material. The positive electrode active material for the non-aqueous secondary battery contains a lithium composite oxide having an olivine structure represented by the chemical formula: Li1+AMnXM1?X(PO4)1+B in which A>0, B>0, M represents a metal element, M in the chemical formula is one or more metal elements selected from Fe, Ni, Co, Ti, Cu, Zn, Mg, V, and Zr, the ratio A/B in the chemical formula is within a range of: 2<A/B?7, and the value of X is within a range of: 0.3?X<1.
    Type: Application
    Filed: January 29, 2014
    Publication date: July 31, 2014
    Applicant: Hitachi Metals, Ltd.
    Inventors: Takashi NAKABAYASHI, Shin TAKAHASHI, Kan KITAGAWA, Toyotaka YUASA, Shuichi TAKANO, Mitsuru KOBAYASHI