Patents by Inventor Masahiro Shiraga

Masahiro Shiraga 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: 20210057710
    Abstract: A nonaqueous electrolyte secondary battery (10) according to one embodiment of the present disclosure is provided with: an electrode body (14) which is obtained by winding a positive electrode (30) and a negative electrode (40), with a separator (50) being interposed therebetween; a nonaqueous electrolyte; and a battery case (15) which is formed of a metal and contains the electrode body (14) and the nonaqueous electrolyte. The negative electrode (40) comprises a negative electrode collector (41) and a negative electrode active material layer (42) that contains graphite particles as a negative electrode active material; the outer circumferential surface of the electrode body (14) is provided with an exposure part (43) from which the negative electrode collector (41) is exposed so as to be in contact with the inner circumferential surface of the battery case (15); and the graphite particles have a compressive strength of 15 MPa or more.
    Type: Application
    Filed: February 19, 2019
    Publication date: February 25, 2021
    Applicant: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Masanobu Takeuchi, Manabu Takijiri, Yoshio Kato, Masahiro Shiraga
  • Patent number: 10811729
    Abstract: A nonaqueous electrolyte secondary battery includes a positive electrode including a positive electrode mix layer, a negative electrode including a negative electrode mix layer, and a nonaqueous electrolyte containing a nonaqueous solvent. A surface of the negative electrode mix layer is provided with grooves. The nonaqueous electrolyte contains 10 volume percent or more of a fluorinated solvent with respect to the volume of the nonaqueous solvent and has a viscosity (25° C.) of 3.50 mPa·s or more as measured with a differential pressure viscometer.
    Type: Grant
    Filed: April 19, 2018
    Date of Patent: October 20, 2020
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Tomoki Tsuji, Masahiro Shiraga, Manabu Takijiri, Takayuki Shirane, Hiroyuki Fujimoto
  • Publication number: 20200014066
    Abstract: This non-aqueous electrolyte secondary battery is provided with a positive electrode, a negative electrode and a non-aqueous electrolyte. The non-aqueous electrolyte contains: a non-aqueous solvent that contains a fluorine-containing cyclic carbonate; a cyclic carboxylic acid anhydride such as diglycolic acid anhydride; and an imide lithium salt having a sulfonyl group such as lithium bis(fluorosulfonyl)imide.
    Type: Application
    Filed: January 26, 2018
    Publication date: January 9, 2020
    Applicant: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Masahiro Shiraga, Mitsuru Iwai, Yuanlong Zhong
  • Publication number: 20180241087
    Abstract: A nonaqueous electrolyte secondary battery includes a positive electrode including a positive electrode mix layer, a negative electrode including a negative electrode mix layer, and a nonaqueous electrolyte containing a nonaqueous solvent. A surface of the negative electrode mix layer is provided with grooves. The nonaqueous electrolyte contains 10 volume percent or more of a fluorinated solvent with respect to the volume of the nonaqueous solvent and has a viscosity (25° C.) of 3.50 mPa·s or more as measured with a differential pressure viscometer.
    Type: Application
    Filed: April 19, 2018
    Publication date: August 23, 2018
    Applicant: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Tomoki Tsuji, Masahiro Shiraga, Manabu Takijiri, Takayuki Shirane, Hiroyuki Fujimoto
  • Patent number: 10056606
    Abstract: It is an object to improve the initial charge-discharge efficiency of a nonaqueous electrolyte secondary battery that uses, as negative electrode active materials, a carbon material and a metal or metal oxide that forms an alloy with lithium. There is provided a nonaqueous electrolyte secondary battery including a positive electrode, a nonaqueous electrolyte, and a negative electrode which includes, as negative electrode active materials, a carbon material and a metal or metal oxide that forms an alloy with lithium and in which at least part of a surface of the carbon material is coated with a polymer material that does not react with lithium. The mass percentage of the polymer material that does not react with lithium relative to the carbon material is preferably 0.5 to 2 mass %.
    Type: Grant
    Filed: February 10, 2014
    Date of Patent: August 21, 2018
    Assignee: SANYO Electric Co., Ltd.
    Inventors: Yoshiyuki Muraoka, Kei Kobayashi, Tatsuki Hiraoka, Masahiro Shiraga
  • Patent number: 9947928
    Abstract: The initial charge/discharge efficiency and cycle characteristics of a nonaqueous electrolyte secondary battery are improved. Provided is a nonaqueous electrolyte secondary battery including a positive electrode, a negative electrode, a porous layer placed on the negative electrode, a separator, and a nonaqueous electrolyte. The porous layer has flat voids. The minor axis direction of each flat void is perpendicular to the plane direction of the porous layer and the major axis direction of the flat void is parallel to the plane direction of the porous layer. The ratio of the major axis to the minor axis of the flat void preferably ranges from 1.4 to 2.2.
    Type: Grant
    Filed: February 10, 2014
    Date of Patent: April 17, 2018
    Assignee: SANYO Electric Co., Ltd.
    Inventors: Kei Kobayashi, Tatsuki Hiraoka, Masahiro Shiraga, Taizou Sunano
  • Publication number: 20170077553
    Abstract: The nonaqueous electrolyte secondary battery includes a positive electrode, a negative electrode, and a nonaqueous electrolytic solution and is characterized in that the nonaqueous electrolytic solution contains propylene carbonate and fluoroethylene carbonate, the positive electrode contains an oxide that contains lithium and one or more metallic elements M as a positive electrode active material, the one or more metallic elements M include at least one selected from the group consisting of cobalt and nickel, the negative electrode contains graphite as an active material, the negative electrode active material includes lithium and a lithium carbonate layer with a thickness of 1 ?m or less on the surface thereof, and the ratio of the total lithium content a of the positive and negative electrodes to the metallic element M content Mm of the oxide, a/Mm, is greater than 1.01.
    Type: Application
    Filed: March 11, 2015
    Publication date: March 16, 2017
    Applicant: Sanyo Electric Co., Ltd.
    Inventors: Tatsuki Hiraoka, Masahiro Shiraga
  • Publication number: 20160204430
    Abstract: The generation of as in nonaqueous electrolyte secondary batteries during storage at elevated temperature is reduced to improve the elevated-temperature storage properties thereof. A nonaqueous electrolyte secondary battery includes a positive electrode, a negative electrode, and a nonaqueous electrolyte solution. The positive electrode contains an oxide containing lithium and a metal element M. The metal element N is at least one element selected from the group consisting of cobalt and nickel. The negative electrode contains SiOx (where x=0.5 to 1.5), a graphite having a BET specific surface area of 10 m2/g, and a material having a BET specific surface area of 10 m2/g, or more. The ratio a/Mc of the total content a of lithium in the positive and negative electrodes to the content Mc of the metal element M in the oxide is greater than 1.01.
    Type: Application
    Filed: September 11, 2014
    Publication date: July 14, 2016
    Applicant: SANYO Electric Co., Ltd.
    Inventors: Tatsuki Hiraoka, Kei Kobayashi, Masahiro Shiraga
  • Publication number: 20150372306
    Abstract: It is an object to improve the initial charge-discharge efficiency of a nonaqueous electrolyte secondary battery that uses, as negative electrode active materials, a carbon material and a metal or metal oxide that forms an alloy with lithium. There is provided a nonaqueous electrolyte secondary battery including a positive electrode, a nonaqueous electrolyte, and a negative electrode which includes, as negative electrode active materials, a carbon material and a metal or metal oxide that forms an alloy with lithium and in which at least part of a surface of the carbon material is coated with a polymer material that does not react with lithium. The mass percentage of the polymer material that does not react with lithium relative to the carbon material is preferably 0.5 to 2 mass %.
    Type: Application
    Filed: February 10, 2014
    Publication date: December 24, 2015
    Applicant: SANYO Electric Co., Ltd.
    Inventors: Yoshiyuki Muraoka, Kei Kobayashi, Tatsuki Hiraoka, Masahiro Shiraga
  • Publication number: 20150364764
    Abstract: The initial charge/discharge efficiency and cycle characteristics of a nonaqueous electrolyte secondary battery are improved. Provided is a nonaqueous electrolyte secondary battery including a positive electrode, a negative electrode, a porous layer placed on the negative electrode, a separator, and a nonaqueous electrolyte. The porous layer has flat voids. The minor axis direction of each flat void is perpendicular to the plane direction of the porous layer and the major axis direction of the flat void is parallel to the plane direction of the porous layer. The ratio of the major axis to the minor axis of the flat void preferably ranges from 1.4 to 2.2.
    Type: Application
    Filed: February 10, 2014
    Publication date: December 17, 2015
    Applicant: SANYO Electric Co., Ltd
    Inventors: Kei Kobayashi, Tatsuki Hiraoka, Masahiro Shiraga, Taizou Sunano
  • Patent number: 7268160
    Abstract: The present invention provides a therapeutic agent or prophylactic agent for a disease that requires enhancement of nerve growth factor production, an enhancer for nerve growth factor production, or a food, beverage or feed for enhancing nerve growth factor production, each comprising as an effective ingredient a specified compound or a salt thereof having enhancing activity for nerve growth factor production; a method for enhancing nerve growth factor production, comprising administering to a mammal the above-mentioned compound or a salt thereof; and use of the above-mentioned compound or a salt thereof in the preparation of a therapeutic agent or prophylactic agent for a disease that requires enhancement of nerve growth factor production, an enhancer for nerve growth factor production, or a food, beverage or feed for enhancing nerve growth factor production. In addition, the present invention provides novel compounds having enhancing activity for nerve growth factor production.
    Type: Grant
    Filed: January 26, 2001
    Date of Patent: September 11, 2007
    Assignee: Takara Bio, Inc.
    Inventors: Hiromu Ohnogi, Masahiro Shiraga, Eiji Kobayashi, Tuo-Ping Li, Suzu Deguchi, Eiji Nishiyama, Hiroaki Sagawa, Ikunoshin Kato
  • Publication number: 20060199774
    Abstract: The present invention relates to a medicament, a food, a beverage or a feed, each comprising as an effective ingredient a compound having an enhancing action for NGF production, which is effective for a treatment, an amelioration of symptom, prevention or the like of a disease requiring enhancement of NGF production, wherein the compound has a coumarin and/or chroman backbone. Since no toxicity is especially found in the effective ingredient of the present invention, and there is no risk of incidence of adverse actions, the treatment or the like of the above disease can be safely and appropriately carried out.
    Type: Application
    Filed: April 24, 2006
    Publication date: September 7, 2006
    Inventors: Hiromu Ohnogi, Masahiro Shiraga, Hiroaki Sagawa, Ikunoshin Kato
  • Patent number: 7078386
    Abstract: The present invention relates to a medicament, a food, a beverage or a feed, each comprising as an effective ingredient a compound having an enhancing action for NGF production, which is effective for a treatment, an amelioration of symptom, prevention or the like of a disease requiring enhancement of NGF production, wherein the compound has a coumarin and/or chroman backbone. Since no toxicity is especially found in the effective ingredient of the present invention, and there is no risk of incidence of adverse actions, the treatment or the like of the above disease can be safely and appropriately carried out.
    Type: Grant
    Filed: March 28, 2002
    Date of Patent: July 18, 2006
    Assignee: Takara Bio, Inc.
    Inventors: Hiromu Ohnogi, Masahiro Shiraga, Hiroaki Sagawa, Ikunoshin Kato
  • Publication number: 20060147558
    Abstract: The present invention provides a composition for enhancing growth factor production, comprising a plant-derived enhancer for growth factor production; a therapeutic agent or prophylactic agent for a disease requiring enhancement of growth factor production and a food, beverage or feed for enhancing growth factor production, each comprising the above composition. In addition, the present invention relates to a functional food, beverage or feed excellent in health enhancement.
    Type: Application
    Filed: October 26, 2005
    Publication date: July 6, 2006
    Inventors: Hiromu Ohnogi, Masahiro Shiraga, Tuo-Ping Li, Eiji Kobayashi, Kaori Nishimura, Hiroaki Sagawa, Ikunoshin Kato
  • Publication number: 20040122082
    Abstract: The present invention relates to a medicament, a food, a beverage or a feed, each comprising as an effective ingredient a compound having an enhancing action for NGF production, which is effective for a treatment, an amelioration of symptom, prevention or the like of a disease requiring enhancement of NGF production, wherein the compound has a coumarin and/or chroman backbone. Since no toxicity is especially found in the effective ingredient of the present invention, and there is no risk of incidence of adverse actions, the treatment or the like of the above disease can be safely and appropriately carried out.
    Type: Application
    Filed: October 10, 2003
    Publication date: June 24, 2004
    Inventors: Hiromu Ohnogi, Masahiro Shiraga, Hiroaki Sagawa, Ikunoshin Kato
  • Publication number: 20040002423
    Abstract: The present invention provides a composition for enhancing growth factor production, comprising a plant-derived enhancer for growth factor production; a therapeutic agent or prophylactic agent for a disease requiring enhancement of growth factor production and a food, beverage or feed for enhancing growth factor production, each comprising the above composition. In addition, the present invention relates to a functional food, beverage or feed excellent in health enhancement.
    Type: Application
    Filed: October 10, 2002
    Publication date: January 1, 2004
    Inventors: Hiromu Ohnogi, Masahiro Shiraga, Tuo-Ping Li, Eiji Kobayashi, Kaori Nishimura, Hiroaki Sagawa, Ikunoshin Kato
  • Publication number: 20030203857
    Abstract: The present invention provides a therapeutic agent or prophylactic agent for a disease requiring enhancement for growth factor production and a food, beverage or feed for enhancing growth factor production, each comprising as an effective ingredient: polyphenols, derivatives thereof, and/or salts thereof; or a composition obtained by subjecting polyphenols, derivatives thereof, and/or salts thereof to: (i) a mixing treatment with a metal, a metal salt and a metal ion, or (ii) an oxidation treatment.
    Type: Application
    Filed: October 11, 2002
    Publication date: October 30, 2003
    Inventors: Hiromu Ohnogi, Eiji Kobayashi, Tuo-Ping Li, Kaori Nishimura, Masahiro Shiraga, Hiroaki Sagawa, Ikunoshin Kato
  • Publication number: 20030144316
    Abstract: The present invention provides a therapeutic agent or prophylactic agent for a disease that requires enhancement of nerve growth factor production, an enhancer for nerve growth factor production, or a food, beverage or feed for enhancing nerve growth factor production, each comprising as an effective ingredient a specified compound or a salt thereof having enhancing activity for nerve growth factor production; a method for enhancing nerve growth factor production, comprising administering to a mammal the above-mentioned compound or a salt thereof; and use of the above-mentioned compound or a salt thereof in the preparation of a therapeutic agent or prophylactic agent for a disease that requires enhancement of nerve growth factor production, an enhancer for nerve growth factor production, or a food, beverage or feed for enhancing nerve growth factor production. In addition, the present invention provides novel compounds having enhancing activity for nerve growth factor production.
    Type: Application
    Filed: July 26, 2002
    Publication date: July 31, 2003
    Inventors: Hiromu Ohnogi, Masahiro Shiraga, Eiji Kobayashi, Tuo-Ping Li, Suzu Deguchi, Eiji Nishiyama, Hiroaki Sagawa, Ikunoshin Kato