Patents by Inventor Katsutoshi Takeda

Katsutoshi Takeda 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: 20200328474
    Abstract: An object of the present invention is to provide a nonaqueous electrolytic solution and a nonaqueous electrolytic solution secondary battery capable of showing high output characteristics at a low temperature even after the battery is used to some extent, and capable of showing good high-rate properties, and further capable of showing sufficient performance again at low temperature even after stored at a high temperature. The nonaqueous electrolytic solution includes a nonaqueous solvent, an electrolyte dissolved in the nonaqueous solvent, (I) a difluoro ionic complex (1) represented by the general formula (1), and (II) at least one compound selected from the group consisting of a difluorophosphate salt, a monofluorophosphate salt, a specific salt having an imide anion, and a specific silane compound, and 95 mol % or more of the difluoro ionic complex (1) is a difluoro ionic complex (1-Cis) in a cis configuration represented by the general formula (1-Cis).
    Type: Application
    Filed: May 24, 2017
    Publication date: October 15, 2020
    Inventors: Saori ITABASHI, Katsutoshi SUZUKI, Mikihiro TAKAHASHI, Kazunari TAKEDA
  • Publication number: 20200212485
    Abstract: A nonaqueous electrolytic solution contains a nonaqueous solvent and an electrolyte dissolved in the solvent.
    Type: Application
    Filed: June 27, 2016
    Publication date: July 2, 2020
    Inventors: Saori ITABASHI, Wataru KAWABATA, Katsutoshi SUZUKI, Kazunari TAKEDA
  • Publication number: 20190386261
    Abstract: A nonaqueous electrolyte secondary battery includes: an electrode assembly including a separator and positive and negative electrodes stacked through the separator; a covering member disposed on the outer circumferential surface of the electrode assembly; and a nonaqueous electrolyte. The covering member has a multilayer structure including a stretchable resin layer and a heat absorbing layer containing a heat absorbing material.
    Type: Application
    Filed: November 17, 2017
    Publication date: December 19, 2019
    Applicant: Panasonic Intellectual Property Management Co., Ltd.
    Inventor: Katsutoshi Takeda
  • Publication number: 20190312307
    Abstract: An object of the present invention is to provide a nonaqueous electrolytic solution and a nonaqueous electrolytic solution secondary battery capable of showing high output characteristics at a low temperature even after the battery is used to some extent, and capable of showing good high-rate properties, and further capable of improving safety of batteries. The nonaqueous electrolytic solution includes a nonaqueous solvent, an electrolyte dissolved in the nonaqueous solvent, (I) a difluoro ionic complex (1) represented by the general formula (1), and (II) at least one compound selected from the group consisting of a specific cyclic phosphazene compound, siloxane compound, aromatic compound, cyclohexene compound, phosphoric acid ester compound, fluorinated linear ether compound, fluorinated cyclic ether compound, and boric acid ester compound, and 95 mol % or more of the difluoro ionic complex (1) is a difluoro ionic complex (1-Cis) in a cis configuration represented by the general formula (1-Cis).
    Type: Application
    Filed: July 4, 2017
    Publication date: October 10, 2019
    Inventors: Saori ITABASHI, Shuji HARADA, Katsutoshi SUZUKI, Kazunari TAKEDA
  • Publication number: 20190273587
    Abstract: To suitably perform communication using a new control unit, even in the case of using the new control unit comprised of the number of subcarriers different from that of the existing resource block, a user terminal according to one aspect of the present invention is characterized by having a receiving section that receives information on a first resource unit comprised of subcarriers lower in number than a predetermined number, and a control section which identifies a frequency region of a second resource unit comprised of the same number of subcarriers as the predetermined number based on the information, and controls communication using the first resource unit inside the frequency region.
    Type: Application
    Filed: October 25, 2017
    Publication date: September 5, 2019
    Applicant: NTT DOCOMO, INC.
    Inventors: Kazuki Takeda, Kazuaki Takeda, Satoshi Nagata, Katsutoshi Kusume
  • Publication number: 20190020009
    Abstract: A stack-type nonaqueous electrolyte secondary battery includes an electrode stack. The electrode stack is housed in an exterior body and includes a plurality of positive electrodes, a plurality of negative electrodes, and a separator. The positive electrodes and the negative electrodes are alternately arranged. The separator includes a fanfold portion including a plurality of intervening elements interposed between the positive electrodes and the negative electrodes. The separator includes a wrapper portion at a portion continuous with the fanfold portion. The wrapper portion extends out of the electrode stack and is disposed to cover at least part of a periphery of the electrode stack.
    Type: Application
    Filed: January 23, 2017
    Publication date: January 17, 2019
    Applicant: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Hiroki Watanabe, Hitoshi Maeda, Katsutoshi Takeda
  • Publication number: 20190013507
    Abstract: A stack-type battery includes a casing, a stacked electrode assembly housed in the casing, and a terminal to which leads extending from single-plate cells of the stacked electrode assembly are connected. The stacked electrode assembly is divided into first and second electrode assembly blocks in a stacking direction. The terminal includes a first inner terminal portion to which the leads of the first electrode assembly block are connected, a second inner terminal portion to which the leads of the second electrode assembly block are connected, and an outer terminal portion continuous with base ends of the first and second inner terminal portions and extending outside the casing. The terminal has a T-shaped side profile.
    Type: Application
    Filed: August 23, 2016
    Publication date: January 10, 2019
    Applicant: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Yoshitaka Shinyashiki, Hitoshi Maeda, Katsutoshi Takeda, Daisuke Ito
  • Patent number: 8388703
    Abstract: A method for producing a non-aqueous electrolyte secondary cell by preparing a positive electrode by applying a positive electrode mixture onto a positive electrode core material, the mixture containing a positive electrode active material mainly made of a lithium nickel composite oxide and a binding agent containing polyvinylidene fluoride; measuring the amount of carbon dioxide gas generated when a layer of the positive electrode mixture is removed out of the positive electrode and the layer is heated to 200° C. or higher and 400° C. or lower in an inactive gas atmosphere; selecting a positive electrode satisfying the following formulas: y<(0.27x?51)/1000000(200?x<400)??formula 1 y<57/1000000(400?x?1500)??formula 2 where x is a heating temperature (° C.) and y is the amount of carbon dioxide gas (mole/g) per 1 g of the lithium nickel composite oxide measured; and preparing the non-aqueous electrolyte secondary cell by using the positive electrode selected.
    Type: Grant
    Filed: May 11, 2012
    Date of Patent: March 5, 2013
    Assignee: SANYO Electric Co., Ltd.
    Inventors: Katsutoshi Takeda, Yoshio Kato, Shingo Tode, Masanori Maekawa, Shigeki Matsuta
  • Patent number: 8349496
    Abstract: A non-aqueous electrolyte secondary battery having a negative electrode, a non-aqueous electrolyte, and a positive electrode having a positive electrode active material comprising sodium oxide, is characterized in that the sodium oxide contains lithium, and the molar amount of the lithium is less than the molar amount of the sodium.
    Type: Grant
    Filed: February 9, 2012
    Date of Patent: January 8, 2013
    Assignee: SANYO Electric Co., Ltd.
    Inventors: Motoharu Saito, Hideyuki Koga, Katsutoshi Takeda, Masahisa Fujimoto
  • Publication number: 20120280172
    Abstract: A method for producing a non-aqueous electrolyte secondary cell by preparing a positive electrode by applying a positive electrode mixture onto a positive electrode core material, the mixture containing a positive electrode active material mainly made of a lithium nickel composite oxide and a binding agent containing polyvinylidene fluoride; measuring the amount of carbon dioxide gas generated when a layer of the positive electrode mixture is removed out of the positive electrode and the layer is heated to 200° C. or higher and 400° C. or lower in an inactive gas atmosphere; selecting a positive electrode satisfying the following formulas: y<(0.27x?51)/1000000(200?x<400)??formula 1 y<57/1000000(400?x?1500)??formula 2 where x is a heating temperature (° C.) and y is the amount of carbon dioxide gas (mole/g) per 1 g of the lithium nickel composite oxide measured; and preparing the non-aqueous electrolyte secondary cell by using the positive electrode selected.
    Type: Application
    Filed: May 11, 2012
    Publication date: November 8, 2012
    Applicant: SANYO ELECTRIC CO., LTD.
    Inventors: Katsutoshi Takeda, Yoshio Kato, Shingo Tode, Masanori Maekawa, Shigeki Matsuta
  • Patent number: 8263263
    Abstract: A positive electrode active material is made of sodium containing oxide. The sodium containing oxide contains NaALiBMO2±? that belongs to a space group P63/mmc of a hexagonal system, where the M includes at least one of manganese (Mn) and cobalt (Co). In the NaALiBMO2±?, the composition ratio A of sodium (Na) is not less than 0.5 and not more than 1.1, the composition ratio B of lithium (Li) is larger than 0 and not more than 0.3, and the ? is not less than 0 and not more than 0.3.
    Type: Grant
    Filed: March 21, 2008
    Date of Patent: September 11, 2012
    Assignee: Sanyo Electric Co., Ltd.
    Inventors: Motoharu Saito, Katsutoshi Takeda, Masahisa Fujimoto, Hiroshi Sawada
  • Publication number: 20120180549
    Abstract: A positive electrode active material quality judgment method that can easily and accurately judge the quality of a positive electrode active material used in a non-aqueous electrolyte secondary cell without having to complete the positive electrode. The positive electrode active material quality judgment method includes: heating a positive electrode active material mainly made of a lithium nickel composite oxide to a temperature x (° C.) of 200° C. or higher and 1500° C. or lower; measuring the amount of carbon dioxide gas occurring from the heating; and the positive electrode active material as a suitable positive electrode active material when the positive electrode active material satisfies formulas 1 and 2: y<(0.27x?51)/1000000(200?x<400)??formula 1 y<57/1000000(400?x?1500)??formula 2 where x is the heating temperature x (° C.) and y is the amount of carbon dioxide gas (mole/g) occurring per 1 g of the positive electrode active material in the heating to the heating temperature x (° C.).
    Type: Application
    Filed: March 28, 2012
    Publication date: July 19, 2012
    Applicant: SANYO Electric Co., Ltd.
    Inventors: Katsutoshi Takeda, Yoshio Kato, Shingo Tode, Masanori Maekawa, Shigeki Matsuta
  • Patent number: 8197556
    Abstract: A method for producing a non-aqueous electrolyte secondary cell by preparing a positive electrode by applying a positive electrode mixture onto a positive electrode core material, the mixture containing a positive electrode active material mainly made of a lithium nickel composite oxide and a binding agent containing polyvinylidene fluoride; measuring the amount of carbon dioxide gas generated when a layer of the positive electrode mixture is removed out of the positive electrode and the layer is heated to 200° C. or higher and 400° C. or lower in an inactive gas atmosphere; selecting a positive electrode satisfying the following formulas: y<(1.31x?258)/1000000(200?x<300)??formula 3 y<1.20x?225/1000000(300?x?400)??formula 4 where x is a heating temperature (° C.) and y is the amount of carbon dioxide gas (mole/g) per 1 g of the lithium nickel composite oxide measured; and preparing the non-aqueous electrolyte secondary cell by using the positive electrode selected.
    Type: Grant
    Filed: November 11, 2008
    Date of Patent: June 12, 2012
    Assignee: SANYO Electric Co., Ltd.
    Inventors: Katsutoshi Takeda, Yoshio Kato, Shingo Tode, Masanori Maekawa, Shigeki Matsuta
  • Publication number: 20120135319
    Abstract: A non-aqueous electrolyte secondary battery having a negative electrode, a non-aqueous electrolyte, and a positive electrode having a positive electrode active material comprising sodium oxide, is characterized in that the sodium oxide contains lithium, and the molar amount of the lithium is less than the molar amount of the sodium.
    Type: Application
    Filed: February 9, 2012
    Publication date: May 31, 2012
    Applicant: SANYO ELECTRIC CO., LTD.
    Inventors: Motoharu SAITO, Hideyuki KOGA, Katsutoshi TAKEDA, Masahisa FUJIMOTO
  • Patent number: 8178243
    Abstract: A method of producing a non-aqueous electrolyte secondary battery having a negative electrode, a non-aqueous electrolyte, and a positive electrode having a positive electrode active material comprising sodium oxide, characterized in that: the sodium oxide contains lithium; and the molar amount of the lithium is less than the molar amount of the sodium.
    Type: Grant
    Filed: November 15, 2006
    Date of Patent: May 15, 2012
    Assignee: SANYO Electric Co., Ltd.
    Inventors: Motoharu Saito, Hideyuki Koga, Katsutoshi Takeda, Masahisa Fujimoto
  • Patent number: 8166794
    Abstract: A positive electrode active material quality judgment method that can easily and accurately judge the quality of a positive electrode active material used in a non-aqueous electrolyte secondary cell without having to complete the positive electrode. The positive electrode active material quality judgment method includes: heating a positive electrode active material mainly made of a lithium nickel composite oxide to a temperature x (° C.) of 200° C. or higher and 400° C. or lower; measuring the amount of carbon dioxide gas generated from the heating; and the positive electrode active material as a suitable positive electrode active material when the positive electrode active material satisfies formulas 3 and 4: y<(1.31x?258)/1000000(200?x<300)??formula 3 y<1.20x?225/1000000(300?x?400)??formula 4 where x is the heating temperature x (° C.) and y is the amount of carbon dioxide gas (mole/g) generated per 1 g of the positive electrode active material in the heating to the heating temperature x (° C.).
    Type: Grant
    Filed: November 11, 2008
    Date of Patent: May 1, 2012
    Assignee: SANYO Electric Co., Ltd.
    Inventors: Katsutoshi Takeda, Yoshio Kato, Shingo Tode, Masanori Maekawa, Shigeki Matsuta
  • Patent number: 8067118
    Abstract: A mixed positive electrode active material is used. The mixed positive electrode active material is obtained by mixing a layered oxide whose initial charge-discharge efficiency when lithium metal is used for a counter electrode is less than 100% (hereinafter referred to as a first layered oxide) and a layered oxide whose initial charge-discharge efficiency is 100% or more (hereinafter referred to as a second layered oxide). Examples of the first layered oxide include Li1+aMnxCoyNizO2. A sodium oxide such as LiANaBMnXCoYNiZO2 other than a layered compound from which lithium is previously extracted by acid treatment or the like can be used as the second layered oxide whose initial charge-discharge efficiency is 100% or more. A layered oxide obtained by replacing (ion exchange) sodium in the foregoing LiANaBMnXCoYNiZO2 with lithium can be also used as the second layered oxide.
    Type: Grant
    Filed: December 26, 2007
    Date of Patent: November 29, 2011
    Assignee: Sanyo Electric Co., Ltd.
    Inventors: Motoharu Saito, Hideyuki Koga, Katsutoshi Takeda, Hiroshi Sawada, Masahisa Fujimoto
  • Patent number: 8048564
    Abstract: A positive electrode active material is formed of a lithium containing layered oxide. The lithium containing layered oxide contains either or both of LiANaBMnxCoyO2±? that belongs to a space group P63mc or LiANaBMnxCoyO2±? that belongs to a space group Cmca. The lithium containing layered oxide contains the LiANaBMnxCoyO2±? as a solid solution, a mixture or both of them. In the LiANaBMnxCoyO2±?, 0.5?A?1.2, 0<B?0.01, 0.40?x?0.55, 0.40?y?0.55, 0.80?x+y?1.10 and 0???0.3.
    Type: Grant
    Filed: June 25, 2008
    Date of Patent: November 1, 2011
    Assignee: Sanyo Electric Co., Ltd.
    Inventors: Motoharu Saito, Masahisa Fujimoto, Katsutoshi Takeda
  • Patent number: 7838151
    Abstract: A positive electrode active material including lithium (Li), nickel (Ni), manganese (Mn) and a transition metal that can be in the hexavalent state is used. As the transition metal that can be in the hexavalent state, for example, one or both of tungsten (W) and molybdenum (Mo) can be used. As the positive electrode active material including a plurality of materials as mentioned above, LiNi0.5Mn0.5O2 can be used. As a negative electrode, a carbon material or a silicon material capable of storing and releasing lithium ions can be used.
    Type: Grant
    Filed: September 8, 2006
    Date of Patent: November 23, 2010
    Assignee: Sanyo Electric Co., Ltd.
    Inventors: Hideyuki Koga, Hiroshi Sawada, Katsutoshi Takeda, Masahisa Fujimoto
  • Publication number: 20100248040
    Abstract: A non-aqueous electrolyte secondary battery is provided that has a high discharge capacity and in which the structure is stable even when lithium is extracted to a high potential so that good cycle performance can be obtained. A non-aqueous electrolyte secondary battery has a negative electrode, a non-aqueous electrolyte, and a positive electrode having a positive electrode active material comprising sodium oxide, characterized in that: the sodium oxide contains lithium; and the molar amount of the lithium is less than the molar amount of the sodium.
    Type: Application
    Filed: November 15, 2006
    Publication date: September 30, 2010
    Applicant: SANYO ELECTRIC CO., LTD.
    Inventors: Motoharu Saito, Hideyuki Koga, Katsutoshi Takeda, Masahisa Fujimoto