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).

  • Patent number: 9147876
    Abstract: 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: Grant
    Filed: February 11, 2013
    Date of Patent: September 29, 2015
    Assignee: KRI, Inc.
    Inventors: Hisashi Satake, Masanori Fujii, Hajime Kinoshita, Shizukuni Yata
  • Patent number: 8569206
    Abstract: 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: Grant
    Filed: June 22, 2009
    Date of Patent: October 29, 2013
    Assignee: Tokuyama Corporation
    Inventors: Hiroshi Furuya, Yoshiki Fukuyama, Shizukuni Yata
  • Patent number: 8110303
    Abstract: 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: Grant
    Filed: August 14, 2006
    Date of Patent: February 7, 2012
    Assignee: KRI Inc.
    Inventors: Shizukuni Yata, Haruo Kikuta, Hajime Kinoshita, Hiroyuki Tajiri, Shiro Kato
  • Publication number: 20110092362
    Abstract: 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: Application
    Filed: June 23, 2009
    Publication date: April 21, 2011
    Applicant: TOKUYAMA CORPORATION
    Inventors: Hiroshi Furuya, Yoshiki Fukuyama, Shizukuni Yata
  • Patent number: 7838150
    Abstract: 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: Grant
    Filed: November 7, 2001
    Date of Patent: November 23, 2010
    Assignee: KRI, Inc.
    Inventors: Hajime Kinoshita, Shizukuni Yata
  • Patent number: 7642001
    Abstract: 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: Grant
    Filed: July 14, 2006
    Date of Patent: January 5, 2010
    Assignee: Osaka Gas Company Limited
    Inventors: Shizukuni Yata, Haruo Kikuta, Hajime Kinoshita, Hiroyuki Tajiri, Shiro Kato
  • Publication number: 20060281004
    Abstract: 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: Application
    Filed: August 14, 2006
    Publication date: December 14, 2006
    Inventors: Shizukuni Yata, Haruo Kikuta, Hajime Kinoshita, Hiroyuki Tajiri, Shiro Kato
  • Publication number: 20060251955
    Abstract: 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: Application
    Filed: July 14, 2006
    Publication date: November 9, 2006
    Inventors: Shizukuni Yata, Haruo Kikuta, Hajime Kinoshita, Hiroyuki Tajiri, Shiro Kato
  • Publication number: 20050233204
    Abstract: 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: Application
    Filed: June 10, 2005
    Publication date: October 20, 2005
    Inventors: Shizukuni Yata, Haruo Kikuta, Hajime Kinoshita, Hiroyuki Tajiri, Shiro Kato
  • Patent number: 6951699
    Abstract: 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: Grant
    Filed: August 8, 2003
    Date of Patent: October 4, 2005
    Assignee: Osaka Gas Company Limited
    Inventors: Shizukuni Yata, Haruo Kikuta, Hajime Kinoshita, Shiro Kato
  • Patent number: 6902847
    Abstract: 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: Grant
    Filed: May 20, 1999
    Date of Patent: June 7, 2005
    Assignee: Osaka Gas Company Limited
    Inventors: Shizukuni Yata, Haruo Kikuta, Hajime Kinoshita, Hiroyuki Tajiri, Shiro Kato
  • Publication number: 20050118500
    Abstract: 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: Application
    Filed: November 5, 2004
    Publication date: June 2, 2005
    Inventors: Shizukuni Yata, Haruo Kikuta, Hajime Kinoshita, Hiroyuki Tajiri, Shiro Kato
  • Publication number: 20040048152
    Abstract: 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: Application
    Filed: August 8, 2003
    Publication date: March 11, 2004
    Inventors: Shizukuni Yata, Haruo Kikuta, Hajime Kinoshita, Hiroyuki Tajiri, Shiro Kato
  • Publication number: 20040023118
    Abstract: 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: Application
    Filed: March 24, 2003
    Publication date: February 5, 2004
    Inventors: Hajime Kinoshita, Shizukuni Yata
  • Patent number: 6461769
    Abstract: 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: Grant
    Filed: December 21, 1999
    Date of Patent: October 8, 2002
    Assignee: Kanebo Limited
    Inventors: Nobuo Ando, Masaki Yamaguchi, Hajime Kinoshita, Shizukuni Yata
  • Patent number: 5750287
    Abstract: 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: Grant
    Filed: March 21, 1996
    Date of Patent: May 12, 1998
    Assignee: Kanebo Ltd.
    Inventors: Hajime Kinoshita, Nobuo Ando, Akihiro Anekawa, Takeshi Hashimoto, Yukinori Hato, Shizukuni Yata
  • Patent number: 4753717
    Abstract: 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: Grant
    Filed: March 21, 1986
    Date of Patent: June 28, 1988
    Assignee: Kanebo Ltd.
    Inventors: Shizukuni Yata, Yukinori Hato, Takuji Osaki, Kazuo Sakurai
  • Patent number: 4628015
    Abstract: 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: Grant
    Filed: September 19, 1985
    Date of Patent: December 9, 1986
    Assignee: Kanebo, Ltd.
    Inventors: Shizukuni Yata, Yukinori Hato
  • Patent number: 4615960
    Abstract: 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: Grant
    Filed: January 11, 1985
    Date of Patent: October 7, 1986
    Assignee: Kanebo, Ltd.
    Inventor: Shizukuni Yata
  • Patent number: 4601849
    Abstract: 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: Grant
    Filed: June 9, 1982
    Date of Patent: July 22, 1986
    Assignee: Kanebo, Ltd.
    Inventor: Shizukuni Yata