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).
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Patent number: 11923543Abstract: A nonaqueous electrolyte secondary battery according to an embodiment of the present invention includes a positive electrode, a negative electrode, and a nonaqueous electrolyte, wherein the negative electrode contains, as a negative electrode active material, graphite particles having a volume per mass, of pores having a diameter of 2 nm or less determined by the DFT method from nitrogen adsorption isotherm, of 0.3 mm3/g or less.Type: GrantFiled: February 22, 2019Date of Patent: March 5, 2024Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventors: Yoshio Kato, Yoshinori Kida, Masahiro Shiraga
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Publication number: 20210249658Abstract: A nonaqueous electrolyte secondary battery according to an embodiment of the present invention includes a positive electrode, a negative electrode, and a nonaqueous electrolyte, wherein the negative electrode contains, as a negative electrode active material, graphite particles having a volume per mass, of pores having a diameter of 2 nm or less determined by the DFT method from nitrogen adsorption isotherm, of 0.3 mm3/g or less.Type: ApplicationFiled: February 22, 2019Publication date: August 12, 2021Applicant: Panasonic Intellectual Property Management Co., Ltd.Inventors: Yoshio Kato, Yoshinori Kida, Masahiro Shiraga
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Publication number: 20210159539Abstract: A nonaqueous-electrolyte secondary cell according to one embodiment of the present disclosure comprises a positive electrode, a negative electrode, and a nonaqueous electrolyte. The negative electrode contains graphite having a BET specific surface area of 2 m2/g or less, and the nonaqueous electrolyte contains a cyclic carboxylic acid anhydride represented by formula (1) or formula (2). In the formula (1), n represents 0, 1, or 2, and R1 to R4 each independently represents a hydrogen atom, an alkyl group, an alkenyl group, or an aryl group. In the formula (2), R5 to R8 each independently represents a hydrogen atom, an alkyl group, an alkenyl group, or an aryl group.Type: ApplicationFiled: February 18, 2019Publication date: May 27, 2021Applicant: Panasonic Intellectual Property Management Co., Ltd.Inventors: Masahiro Shiraga, Yuanlong Zhong
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Publication number: 20210057710Abstract: 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: ApplicationFiled: February 19, 2019Publication date: February 25, 2021Applicant: Panasonic Intellectual Property Management Co., Ltd.Inventors: Masanobu Takeuchi, Manabu Takijiri, Yoshio Kato, Masahiro Shiraga
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Patent number: 10811729Abstract: 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: GrantFiled: April 19, 2018Date of Patent: October 20, 2020Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventors: Tomoki Tsuji, Masahiro Shiraga, Manabu Takijiri, Takayuki Shirane, Hiroyuki Fujimoto
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Publication number: 20200014066Abstract: 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: ApplicationFiled: January 26, 2018Publication date: January 9, 2020Applicant: Panasonic Intellectual Property Management Co., Ltd.Inventors: Masahiro Shiraga, Mitsuru Iwai, Yuanlong Zhong
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Publication number: 20180241087Abstract: 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: ApplicationFiled: April 19, 2018Publication date: August 23, 2018Applicant: Panasonic Intellectual Property Management Co., Ltd.Inventors: Tomoki Tsuji, Masahiro Shiraga, Manabu Takijiri, Takayuki Shirane, Hiroyuki Fujimoto
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Patent number: 10056606Abstract: 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: GrantFiled: February 10, 2014Date of Patent: August 21, 2018Assignee: SANYO Electric Co., Ltd.Inventors: Yoshiyuki Muraoka, Kei Kobayashi, Tatsuki Hiraoka, Masahiro Shiraga
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Patent number: 9947928Abstract: 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: GrantFiled: February 10, 2014Date of Patent: April 17, 2018Assignee: SANYO Electric Co., Ltd.Inventors: Kei Kobayashi, Tatsuki Hiraoka, Masahiro Shiraga, Taizou Sunano
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Publication number: 20170077553Abstract: 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: ApplicationFiled: March 11, 2015Publication date: March 16, 2017Applicant: Sanyo Electric Co., Ltd.Inventors: Tatsuki Hiraoka, Masahiro Shiraga
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Publication number: 20160204430Abstract: 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: ApplicationFiled: September 11, 2014Publication date: July 14, 2016Applicant: SANYO Electric Co., Ltd.Inventors: Tatsuki Hiraoka, Kei Kobayashi, Masahiro Shiraga
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Publication number: 20150372306Abstract: 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: ApplicationFiled: February 10, 2014Publication date: December 24, 2015Applicant: SANYO Electric Co., Ltd.Inventors: Yoshiyuki Muraoka, Kei Kobayashi, Tatsuki Hiraoka, Masahiro Shiraga
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Publication number: 20150364764Abstract: 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: ApplicationFiled: February 10, 2014Publication date: December 17, 2015Applicant: SANYO Electric Co., LtdInventors: Kei Kobayashi, Tatsuki Hiraoka, Masahiro Shiraga, Taizou Sunano
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Patent number: 7268160Abstract: 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: GrantFiled: January 26, 2001Date of Patent: September 11, 2007Assignee: Takara Bio, Inc.Inventors: Hiromu Ohnogi, Masahiro Shiraga, Eiji Kobayashi, Tuo-Ping Li, Suzu Deguchi, Eiji Nishiyama, Hiroaki Sagawa, Ikunoshin Kato
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Publication number: 20060199774Abstract: 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: ApplicationFiled: April 24, 2006Publication date: September 7, 2006Inventors: Hiromu Ohnogi, Masahiro Shiraga, Hiroaki Sagawa, Ikunoshin Kato
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Patent number: 7078386Abstract: 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: GrantFiled: March 28, 2002Date of Patent: July 18, 2006Assignee: Takara Bio, Inc.Inventors: Hiromu Ohnogi, Masahiro Shiraga, Hiroaki Sagawa, Ikunoshin Kato
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Publication number: 20060147558Abstract: 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: ApplicationFiled: October 26, 2005Publication date: July 6, 2006Inventors: Hiromu Ohnogi, Masahiro Shiraga, Tuo-Ping Li, Eiji Kobayashi, Kaori Nishimura, Hiroaki Sagawa, Ikunoshin Kato
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Publication number: 20040122082Abstract: 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: ApplicationFiled: October 10, 2003Publication date: June 24, 2004Inventors: Hiromu Ohnogi, Masahiro Shiraga, Hiroaki Sagawa, Ikunoshin Kato
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Publication number: 20040002423Abstract: 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: ApplicationFiled: October 10, 2002Publication date: January 1, 2004Inventors: Hiromu Ohnogi, Masahiro Shiraga, Tuo-Ping Li, Eiji Kobayashi, Kaori Nishimura, Hiroaki Sagawa, Ikunoshin Kato
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Publication number: 20030203857Abstract: 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: ApplicationFiled: October 11, 2002Publication date: October 30, 2003Inventors: Hiromu Ohnogi, Eiji Kobayashi, Tuo-Ping Li, Kaori Nishimura, Masahiro Shiraga, Hiroaki Sagawa, Ikunoshin Kato