Patents by Inventor Shizukuni Yata
Shizukuni Yata 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: 9147876Abstract: A predoping technique considered as highly practicable is an electrochemical method in which predoping is performed by assembling a battery such that an active material (electrode) and lithium are brought into direct contact with each other or short-circuited therebetween via an electric circuit, and by filling an electrolytic solution in the battery. However, in this case, much time is required, and there are problems such as the handling and the thickness accuracy of an extremely thin lithium metal foil that is not greater than 30 ?m thick. By mixing a lithium-dopable material and lithium metal together in the presence of a solvent, such problems can be solved.Type: GrantFiled: February 11, 2013Date of Patent: September 29, 2015Assignee: KRI, Inc.Inventors: Hisashi Satake, Masanori Fujii, Hajime Kinoshita, Shizukuni Yata
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Patent number: 8569206Abstract: Disclosed is a method for producing a porous carbon material comprising: heating a cured phenolic resin complex lump, including 150 to 450 parts by weight of sodium hydroxide and/or potassium hydroxide per 100 parts by weight of phenolic resin, at a temperature of 420 to 850° C. in a non-oxidizing atmosphere to obtain carbonized material; and washing and removing sodium hydroxide and potassium hydroxide included in the carbonized material. According to the present invention, there can be provided a porous carbon material, including large volumes of subnano-pores having a diameter of in a range of 0.45 to 1.0 nm with a sharp distribution, which is particularly useful as a gaseous adsorbent.Type: GrantFiled: June 22, 2009Date of Patent: October 29, 2013Assignee: Tokuyama CorporationInventors: Hiroshi Furuya, Yoshiki Fukuyama, Shizukuni Yata
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Patent number: 8110303Abstract: The invention provides a non-aqueous secondary battery having positive and negative electrodes and non-aqueous electrolyte containing lithium salt which has an energy capacity of 30 Wh or more, a volume energy density of 180 Wh/l or higher, which battery has a flat shape and is superior in heat radiation characteristic, used safely and particularly preferably used for a energy storage system. The invention also provides a control method of the secondary battery.Type: GrantFiled: August 14, 2006Date of Patent: February 7, 2012Assignee: KRI Inc.Inventors: Shizukuni Yata, Haruo Kikuta, Hajime Kinoshita, Hiroyuki Tajiri, Shiro Kato
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Publication number: 20110092362Abstract: Disclosed is a method for producing a porous carbon material comprising: heating a cured phenolic resin complex lump, including 150 to 450 parts by weight of sodium hydroxide and/or potassium hydroxide per 100 parts by weight of phenolic resin, at a temperature of 420 to 850° C. in a non-oxidizing atmosphere to obtain carbonized material; and washing and removing sodium hydroxide and potassium hydroxide included in the carbonized material. According to the present invention, there can be provided a porous carbon material, including large volumes of subnano-pores having a diameter of in a range of 0.45 to 1.0 nm with a sharp distribution, which is particularly useful as a gaseous adsorbent.Type: ApplicationFiled: June 23, 2009Publication date: April 21, 2011Applicant: TOKUYAMA CORPORATIONInventors: Hiroshi Furuya, Yoshiki Fukuyama, Shizukuni Yata
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Patent number: 7838150Abstract: A nonaqueous lithium secondary battery comprising a positive electrode, a negative electrode, and a nonaqueous electrolyte, wherein: 1) the positive electrode comprises a porous carbonaceous material whose BET specific surface area is at least 500 m2/g, or a mixture of a porous carbonaceous material whose BET specific surface area is at least 500 m2/g and a material capable of electrochemically occluding and releasing lithium; and 2) the negative electrode comprises a carbonaceous material whose BET specific surface area is 20 to 1000 m2/g.Type: GrantFiled: November 7, 2001Date of Patent: November 23, 2010Assignee: KRI, Inc.Inventors: Hajime Kinoshita, Shizukuni Yata
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Patent number: 7642001Abstract: The invention provides a non-aqueous secondary battery having positive and negative electrodes and non-aqueous electrolyte containing lithium salt which has an energy capacity of 30 Wh or more, a volume energy density of 180 Wh/l or higher, which battery has a flat shape and is superior in heat radiation characteristic, used safely and particularly preferably used for a energy storage system. The invention also provides a control method of the secondary battery.Type: GrantFiled: July 14, 2006Date of Patent: January 5, 2010Assignee: Osaka Gas Company LimitedInventors: Shizukuni Yata, Haruo Kikuta, Hajime Kinoshita, Hiroyuki Tajiri, Shiro Kato
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Publication number: 20060281004Abstract: The invention provides a non-aqueous secondary battery having positive and negative electrodes and non-aqueous electrolyte containing lithium salt which has an energy capacity of 30 Wh or more, a volume energy density of 180 Wh/l or higher, which battery has a flat shape and is superior in heat radiation characteristic, used safely and particularly preferably used for a energy storage system. The invention also provides a control method of the secondary battery.Type: ApplicationFiled: August 14, 2006Publication date: December 14, 2006Inventors: Shizukuni Yata, Haruo Kikuta, Hajime Kinoshita, Hiroyuki Tajiri, Shiro Kato
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Publication number: 20060251955Abstract: The invention provides a non-aqueous secondary battery having positive and negative electrodes and non-aqueous electrolyte containing lithium salt which has an energy capacity of 30 Wh or more, a volume energy density of 180 Wh/l or higher, which battery has a flat shape and is superior in heat radiation characteristic, used safely and particularly preferably used for a energy storage system. The invention also provides a control method of the secondary battery.Type: ApplicationFiled: July 14, 2006Publication date: November 9, 2006Inventors: Shizukuni Yata, Haruo Kikuta, Hajime Kinoshita, Hiroyuki Tajiri, Shiro Kato
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Publication number: 20050233204Abstract: A secondary battery for a energy storage system includes: positive and negative terminals for charge and discharge provided on a battery case; and operation-parameter-measuring electrodes extending from different portions of the battery to the outside of the battery case for measurement of operation parameters in the battery.Type: ApplicationFiled: June 10, 2005Publication date: October 20, 2005Inventors: Shizukuni Yata, Haruo Kikuta, Hajime Kinoshita, Hiroyuki Tajiri, Shiro Kato
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Patent number: 6951699Abstract: The invention provides a non-aqueous secondary battery having positive and negative electrodes and non-aqueous electrolyte containing lithium salt which has an energy capacity of 30 Wh or more, a volume energy density of 180 Wh/l or higher, which battery has a flat shape and is superior in heat radiation characteristic, used safely and particularly preferably used for a energy storage system. The invention also provides a control method of the secondary battery.Type: GrantFiled: August 8, 2003Date of Patent: October 4, 2005Assignee: Osaka Gas Company LimitedInventors: Shizukuni Yata, Haruo Kikuta, Hajime Kinoshita, Shiro Kato
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Patent number: 6902847Abstract: The invention provides a non-aqueous secondary battery having positive and negative electrodes and non-aqueous electrolyte containing lithium salt which has an energy capacity of 30 Wh or more, a volume energy density of 180 Wh/l or higher, which battery has a flat shape and is superior in heat radiation characteristic, used safely and particularly preferably used for a energy storage system. The invention also provides a control method of the secondary battery.Type: GrantFiled: May 20, 1999Date of Patent: June 7, 2005Assignee: Osaka Gas Company LimitedInventors: Shizukuni Yata, Haruo Kikuta, Hajime Kinoshita, Hiroyuki Tajiri, Shiro Kato
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Publication number: 20050118500Abstract: The invention provides a non-aqueous secondary battery having positive and negative electrodes and non-aqueous electrolyte containing lithium salt which has an energy capacity of 30 Wh or more, a volume energy density of 180 Wh/l or higher, which battery has a flat shape and is superior in heat radiation characteristic, used safely and particularly preferably used for a energy storage system. The invention also provides a control method of the secondary battery.Type: ApplicationFiled: November 5, 2004Publication date: June 2, 2005Inventors: Shizukuni Yata, Haruo Kikuta, Hajime Kinoshita, Hiroyuki Tajiri, Shiro Kato
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Publication number: 20040048152Abstract: The invention provides a non-aqueous secondary battery having positive and negative electrodes and non-aqueous electrolyte containing lithium salt which has an energy capacity of 30 Wh or more, a volume energy density of 180 Wh/l or higher, which battery has a flat shape and is superior in heat radiation characteristic, used safely and particularly preferably used for a energy storage system. The invention also provides a control method of the secondary battery.Type: ApplicationFiled: August 8, 2003Publication date: March 11, 2004Inventors: Shizukuni Yata, Haruo Kikuta, Hajime Kinoshita, Hiroyuki Tajiri, Shiro Kato
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Publication number: 20040023118Abstract: A nonaqueous lithium secondary battery comprising a positive electrode, a negative electrode, and a nonaqueous electrolyte, wherein: 1) the positive electrode comprises a porous carbonaceous material whose BET specific surface area is at least 500 m2/g, or a mixture of a porous carbonaceous material whose BET specific surface area is at least 500 m2/g and a material capable of electrochemically occluding and releasing lithium; and 2) the negative electrode comprises a carbonaceous material whose BET specific surface area is 20 to 1000 m2/g.Type: ApplicationFiled: March 24, 2003Publication date: February 5, 2004Inventors: Hajime Kinoshita, Shizukuni Yata
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Patent number: 6461769Abstract: Disclosed is an organic electrolytic cell comprising a positive electrode, a negative electrode and a solution of lithium salt in an aprotic organic solvent as an electrolytic solution. A current collector of positive electrode and a current collector of negative are respectively provided with pores piercing from the front surface to the back surface, an active material of negative electrode is capable of reversibly carrying lithium, and lithium originating in the negative electrode is carried by electrochemical contact with lithium arranged to face the negative or positive electrode. An opposed area of said lithium is not more than 40% of an area of the negative electrode.Type: GrantFiled: December 21, 1999Date of Patent: October 8, 2002Assignee: Kanebo LimitedInventors: Nobuo Ando, Masaki Yamaguchi, Hajime Kinoshita, Shizukuni Yata
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Patent number: 5750287Abstract: There is provided an organic electrolytic cell equipped with a positive electrode, a negative electrode and a solution of a lithium salt in an aprotic organic solvent as an electrolytic solution, wherein(1) the positive electrode contains a metallic oxide,(2) the negative electrode is an infusible, insoluble substrate (PAS) having a polyacene type skeletal structure and a hydrogen/carbon atomic ratio of 0.5 to 0.05, the substrate being a heat-treated product of an aromatic condensation polymer, and(3) the total amount of lithium contained in the cell is 500 mAh/g or more, and the amount of lithium originating in the negative electrode is 100 mAh/g or more, based on the infusible, insoluble substrate (PAS) having a polyacene type skeletal structure as the negative electrode,the organic electrolytic cell being a secondary cell having a high capacity and high voltage.Type: GrantFiled: March 21, 1996Date of Patent: May 12, 1998Assignee: Kanebo Ltd.Inventors: Hajime Kinoshita, Nobuo Ando, Akihiro Anekawa, Takeshi Hashimoto, Yukinori Hato, Shizukuni Yata
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Patent number: 4753717Abstract: An insoluble and infusible substrate with a polyacene-type skelatal structure having a hydrogen/carbon atomic ratio of from 0.05 to 0.60 and containing open pores having an average diameter of not more than 10 micrometers, said substrate being a heat-treated product of an aromatic condensation polymer consisting of carbon, hydrogen and oxygen. The substrate, when doped with a dopant, gives an electrically conductive material. When having a specific surface area of at least 600 m.sup.2 /g, the substrate is especially useful as an electrode of an organic cell.Type: GrantFiled: March 21, 1986Date of Patent: June 28, 1988Assignee: Kanebo Ltd.Inventors: Shizukuni Yata, Yukinori Hato, Takuji Osaki, Kazuo Sakurai
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Patent number: 4628015Abstract: An insoluble and infusible substrate with a polyacene-type skeletal structure having a hydrogen/carbon atomic ratio of from 0.05 to 0.60 and a specific surface area, measured by the BET method, of at least 600 m.sup.2 /g, said substrate being a heat-treated product of a mixture comprising an aromatic condensation polymer consisting of carbon, hydrogen and oxygen as a matrix and a fiber member selected from the group consisting of phenol resin fibers, heat-treated phenol resin fibers and carbon fibers dispersed therein.The substrate has excellent physical properties such as strength and is useful as an electrode for organic cell.Type: GrantFiled: September 19, 1985Date of Patent: December 9, 1986Assignee: Kanebo, Ltd.Inventors: Shizukuni Yata, Yukinori Hato
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Patent number: 4615960Abstract: An insoluble and infusible substrate with a polyacene-type skeletal structure having a hydrogen/carbon atomic ratio of from 0.05 to 0.60 and a specific surface area, measured by the BET method, of at least 600 m.sup.2 /g, said substrate being a heat-treated product of an aromatic condensation polymer consisting of carbon, hydrogen and oxygen.The substrate provides an electrically conductive organic polymeric material having a higher electrical conductivity than said non-doped substrate, when it is doped with an electron donating doping agent, or an electron accepting doping agent, or both.The substrate is useful as an electrode for organic cell.Type: GrantFiled: January 11, 1985Date of Patent: October 7, 1986Assignee: Kanebo, Ltd.Inventor: Shizukuni Yata
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Patent number: 4601849Abstract: An electrically conductive organic polymeric material is disclosed which comprises (a) an insoluble and infusible substrate with a polyacene-type skeletal structure having a hydrogen/carbon atomic ratio of from 0.60 to 0.15, said substrate being a heat-treated product of an aromatic condensation polymer consisting of carbon, hydrogen and oxygen, and (b) an electron donating doping agent, or an electron accepting doping agent, or both; said material having a higher electrical conductivity than the undoped substrate (a). The electrically conductive organic polymeric material can be produced by a process which comprises heat-treating an aromatic condensation polymer consisting of carbon, hydrogen and oxygen in a non-oxidizing atmosphere by heating it to a temperature of 400.degree. to 800.degree. C. to form a substrate having a hydrogen/carbon atomic ratio of from 0.06 to 0.Type: GrantFiled: June 9, 1982Date of Patent: July 22, 1986Assignee: Kanebo, Ltd.Inventor: Shizukuni Yata