Patents by Inventor Hiroyuki Yumoto

Hiroyuki Yumoto 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: 20070065726
    Abstract: The battery has an electrolyte that includes an organoborate additive and one or more salts in a solvent. The organoborate additive can be present in a concentration less than 0.2 M or less than 0.05 M. A molar ratio of the organoborate additive:one or more salts is in a range of 4:1 to 400:1. In some instances, the solvent includes one or more organic solvents.
    Type: Application
    Filed: February 17, 2005
    Publication date: March 22, 2007
    Inventors: Hiroyuki Yumoto, Nelly Bourgeon, Taison Tan, Phuong-Nghi Lam
  • Publication number: 20070059596
    Abstract: A nonaqueous secondary electrolytic battery comprising an electricity-generating element formed by spirally winding a laminate of a positive electrode plate, a separating material and a negative electrode plate, and an electrolytic solution with which the separating material, if it is a separator, is impregnated. The electricity-generating element is sealed in a battery case formed by a resin-laminated sheet comprising a metal layer as a barrier layer. Only a pair of lead terminals are drawn to the exterior of the battery case. The resin sheet comprises an oriented resin layer laminated on both surfaces of the metal layer. The inner heat-fused layers are opposed and heat-fused to each other. A molten and solidified resin mass is formed protruding from the inner end of the welded portion toward the inner space of the battery by 0.1 mm or more. Alternatively, the welded portion is formed thinner at the outer end thereof than at the inner end thereof.
    Type: Application
    Filed: October 26, 2006
    Publication date: March 15, 2007
    Applicant: GS YUASA CORPORATION
    Inventors: Hiroshi MUKAI, Tetsuya MURAI, Shinya KITANO, Mikio OKADA, Hiroshi NAKAHARA, Mikito NAGATA, Hiroyuki YUMOTO
  • Publication number: 20060162150
    Abstract: Disclosed is an improved type of fluorinated carbon (CFx) for use in electrical storage devices such as batteries and capacitors. The CFx is coated with a conductive material such as gold or carbon using vapor deposition. The resulting material exhibits better conductivity with concomitant lower impedance, higher electrical stability, and improved potential throughout the useful life of the device, as compared to uncoated CFx. The improved conductivity reduces the amount of nonactive material (e.g., carbon black) that needs to be added, thus improving the volumetric energy density. In addition, cells made with the subject CFx exhibit more constant voltages and higher overall voltage (2.0 volts with a lithium metal anode) throughout their useful life. Chemical or physical vapor deposition techniques to deposit a variety of metals or carbon may be used to create the improved CFx. The coated CFx may be used in primary or secondary batteries, as well as capacitors and hybrid devices.
    Type: Application
    Filed: March 22, 2006
    Publication date: July 27, 2006
    Inventors: Hisashi Tsukamoto, Kaname Takeya, Hiroyuki Yumoto, M. Bush
  • Patent number: 7052802
    Abstract: Disclosed is an improved type of fluorinated carbon (CFx) for use in electrical storage devices such as batteries and capacitors. The CFx is coated with a conductive material such as gold or carbon using vapor deposition. The resulting material exhibits better conductivity with concomitant lower impedance, higher electrical stability, and improved potential throughout the useful life of the device, as compared to uncoated CFx. The improved conductivity reduces the amount of nonactive material (e.g., carbon black) that needs to be added, thus improving the volumetric energy density. In addition, cells made with the subject CFx exhibit more constant voltages and higher overall voltage (2.0 volts with a lithium metal anode) throughout their useful life. Chemical or physical vapor deposition techniques to deposit a variety of metals or carbon may be used to create the improved CFx. The coated CFx may be used in primary or secondary batteries, as well as capacitors and hybrid devices.
    Type: Grant
    Filed: October 15, 2002
    Date of Patent: May 30, 2006
    Assignee: Quallion LLC
    Inventors: Hisashi Tsukamoto, Kaname Takeya, Hiroyuki Yumoto, M. Elizabeth Bush
  • Publication number: 20060035147
    Abstract: Disclosed is a positive electrode (30) comprising: a foil substrate (32); and a slurry coated on both faces, wherein the coating (34, 36) comprises an active material comprising particles having an average diameter of greater than 1 ?m to about 100 ?m. Also disclosed is an electrode assembly and battery using, and a method for making, the positive electrode. Also disclosed is a method for making a negative electrode (70) comprising the acts of: providing a foil substrate (72); and laminating lithium foil (74, 78) onto both faces, leaving a portion free of lithium. Also disclosed is a hermetically sealable electric storage battery and a manufacturing method for filling and sealing it.
    Type: Application
    Filed: July 9, 2003
    Publication date: February 16, 2006
    Applicant: Quallion LLC
    Inventors: Phuong-Nghi Lam, Hiroyuki Yumoto, David Skinlo, Taison Tan, David DeMuth
  • Patent number: 6998192
    Abstract: A negative electrode for use in secondary battery with nonaqueous electrolyte having a high voltage and energy density and a superior cycle property, characterized in that the active material comprises composite carbon materials containing massive ball-shaped graphite particles, carbon fibers, and graphite flakes. The massive ball-shaped graphite particles provide porosity to the composite, the carbon fibers improve packing density, conductivity, and stiffness to prevent the body made thereof from swelling and decomposing, and the graphite flakes reduce friction in the mixture. An aqueous, non-fluorine-containing binder is used, along with a titanium negative substrate.
    Type: Grant
    Filed: August 28, 2003
    Date of Patent: February 14, 2006
    Assignee: Quallion LLC
    Inventors: Hiroyuki Yumoto, Joanna Dodd, Mikito Nagata, Phuong-Nghi Lam
  • Publication number: 20050031960
    Abstract: An electric storage battery and method of manufacture thereof. Active material (78) is removed from both sides of the outer end (88) of the negative electrode (70) in a jellyroll (84) to allow room for adhesive tape (96) to secure the jellyroll.
    Type: Application
    Filed: January 15, 2003
    Publication date: February 10, 2005
    Inventors: Hiroshi Nakahara, Mikito Nagata, David Skinlo, Hisashi Tsukamoto, Hiroyuki Yumoto
  • Patent number: 6852449
    Abstract: A negative electrode for use in secondary battery with nonaqueous electrolyte having a high voltage and energy density and a superior cycle property, characterized in that the active material comprises composite carbon materials containing hard spherical particles, carbon fibers, and graphite flakes. The hard spheres provide structure to the composite, the carbon fibers improve packing density, conductivity, and stiffness to prevent the body made thereof from swelling and decomposing, and the graphite flakes reduce friction in the mixture. An aqueous, non-fluorine-containing binder is used, along with a titanium negative substrate.
    Type: Grant
    Filed: October 3, 2002
    Date of Patent: February 8, 2005
    Assignee: Quallion LLC
    Inventors: Mikito Nagata, Hiroyuki Yumoto, Hisashi Tsukamoto
  • Publication number: 20050026044
    Abstract: An electrolyte for a battery comprises LiBOB salt in gamma butyrolactone and a low viscosity solvent. The low viscosity solvent may comprise a nitrile, an ether, a linear carbonate, or a linear ester. This electrolyte is suitable for use in lithium ion batteries having graphite negative electrodes. Batteries using this electrolyte have high conductivity, low polarization, and high discharge capacity.
    Type: Application
    Filed: September 1, 2004
    Publication date: February 3, 2005
    Applicant: Quallion LLC
    Inventors: Tsuneaki Koike, Hiroyuki Yumoto, Hisashi Tsukamoto
  • Publication number: 20040214076
    Abstract: An electric storage battery and method of manufacture thereof characterized by a feed through pin (12) which is internally directly physically and electrically connected to an inner end of a positive electrode substrate (32). A C-shaped mandrel (48) extends around the pin and substrate end enabling the pin/mandrel to be used during the manufacturing process as an arbor to facilitate winding layers of a spiral jellyroll electrode assembly. The pin additionally extends from the battery case (101) and in the final product constitutes one of the battery terminals (14) with the battery case comprising the other terminal. The electrolyte is injected through the open end of the case after the end cap is welded to the negative electrode but before sealing the end cap to the case. The electrolyte is preferably injected through the C-shaped mandrel to facilitate and speed filling.
    Type: Application
    Filed: January 20, 2004
    Publication date: October 28, 2004
    Inventors: Hisashi Tsukamoto, Andrew Szyszkowski, David M. Skinlo, Mikito Nagata, Hiroyuki Yumoto
  • Patent number: 6787268
    Abstract: An electrolyte for a battery comprises LiBOB salt in gamma butyrolactone and a low viscosity solvent. The low viscosity solvent may comprise a nitrile, an ether, a linear carbonate, or a linear ester. This electrolyte is suitable for use in lithium ion batteries having graphite negative electrodes. Batteries using this electrolyte have high conductivity, low polarization, and high discharge capacity.
    Type: Grant
    Filed: December 31, 2002
    Date of Patent: September 7, 2004
    Assignee: Quallion LLC
    Inventors: Tsuneaki Koike, Hiroyuki Yumoto, Hisashi Tsukamoto
  • Publication number: 20040096735
    Abstract: A nonaqueous secondary electrolytic battery comprising an electricity-generating element formed by spirally winding a laminate of a positive electrode plate, a separating material and a negative electrode plate, and an electrolytic solution with which the separating material, if it is a separator, is impregnated. The electricity-generating element is sealed in a battery case formed by a resin-laminated sheet comprising a metal layer as a barrier layer. Only a pair of lead terminals are drawn to the exterior of the battery case. The resin sheet comprises an oriented resin layer laminated on both surfaces of the metal layer. The inner heat-fused layers are opposed and heat-fused to each other. A molten and solidified resin mass is formed protruding from the inner end of the welded portion toward the inner space of the battery by 0.1 mm or more. Alternatively, the welded portion is formed thinner at the outer end thereof than at the inner end thereof.
    Type: Application
    Filed: November 14, 2003
    Publication date: May 20, 2004
    Applicant: JAPAN STORAGE BATTERY CO., LTD.
    Inventors: Shigeo Komatsu, Hiroshi Mukai, Tetsuya Murai, Shinya Kitano, Mikio Okada, Minoru Mizutani, Hiroshi Nakahara, Mikito Nagata, Hiroyuki Yumoto
  • Publication number: 20040072075
    Abstract: Disclosed is an improved type of fluorinated carbon (CFx) for use in electrical storage devices such as batteries and capacitors. The CFx is coated with a conductive material such as gold or carbon using vapor deposition. The resulting material exhibits better conductivity with concomitant lower impedance, higher electrical stability, and improved potential throughout the useful life of the device, as compared to uncoated CFx. The improved conductivity reduces the amount of nonactive material (e.g., carbon black) that needs to be added, thus improving the volumetric energy density. In addition, cells made with the subject CFx exhibit more constant voltages and higher overall voltage (2.0 volts with a lithium metal anode) throughout their useful life. Chemical or physical vapor deposition techniques to deposit a variety of metals or carbon may be used to create the improved CFx. The coated CFx may be used in primary or secondary batteries, as well as capacitors and hybrid devices.
    Type: Application
    Filed: October 15, 2002
    Publication date: April 15, 2004
    Applicant: Quallion LLC
    Inventors: Hisashi Tsukamoto, Kaname Takeya, Hiroyuki Yumoto, M. Elizabeth Bush
  • Publication number: 20040043293
    Abstract: A negative electrode for use in secondary battery with nonaqueous electrolyte having a high voltage and energy density and a superior cycle property, characterized in that the active material comprises composite carbon materials containing hard spherical particles, carbon fibers, and graphite flakes. The hard spheres provide structure to the composite, the carbon fibers improve packing density, conductivity, and stiffness to prevent the body made thereof from swelling and decomposing, and the graphite flakes reduce friction in the mixture. An aqueous, non-fluorine-containing binder is used, along with a titanium negative substrate.
    Type: Application
    Filed: October 3, 2002
    Publication date: March 4, 2004
    Applicant: Quallion LLC,
    Inventors: Mikito Nagata, Hiroyuki Yumoto, Hisashi Tsukamoto
  • Publication number: 20040043299
    Abstract: An electrolyte for a battery comprises LiBOB salt in gamma butyrolactone and a low viscosity solvent. The low viscosity solvent may comprise a nitrile, an ether, a linear carbonate, or a linear ester. This electrolyte is suitable for use in lithium ion batteries having graphite negative electrodes. Batteries using this electrolyte have high conductivity, low polarization, and high discharge capacity.
    Type: Application
    Filed: December 31, 2002
    Publication date: March 4, 2004
    Applicant: Quallion LLC
    Inventors: Tsuneaki Koike, Hiroyuki Yumoto, Hisashi Tsukamoto
  • Publication number: 20030211388
    Abstract: A lithium ion battery configured to yield a high energy density output by minimizing head space, i.e., wasted interior volume, within the battery case and/or by reducing electrical energy losses internal to the battery.
    Type: Application
    Filed: April 29, 2003
    Publication date: November 13, 2003
    Inventors: Alan Ruth, Andy Szyszkowski, Clay Kishiyama, Hiroyuki Yumoto, Hisashi Tsukamoto
  • Patent number: 6605382
    Abstract: A lithium ion battery configured to yield a high energy density output by minimizing head space, i.e., wasted interior volume, within the battery case and/or by reducing electrical energy losses internal to the battery.
    Type: Grant
    Filed: April 25, 2001
    Date of Patent: August 12, 2003
    Assignee: Quallion LLC
    Inventors: Alan Ruth, Andy Szyszkowski, Clay Kishiyama, Hiroyuki Yumoto, Hisashi Tsukamoto
  • Patent number: 6433168
    Abstract: According to the method of the present invention, an alkali metal compound, dimethyl sulfoxide, trimethyloxosulfonium halide and 3-quinuclidinone are added in a specific order to give the following compound [II]. This compound is, without treatment or isolation, directly reacted with an alkali metal salt of phenothiazine to give the following compound [III], from which the following compound [I] is obtained. During the production of compound [I], a by-produced acidic gas is removed and water is added to ensure industrial, safe and efficient production of compound [I] at a constantly high yield. Inasmuch as the present invention enables production of the following highly pure compound [A] by eliminating hydrogen halide of compound [I] in glyme in the presence of at least one kind of a base selected from potassium hydroxide and potassium alkoxide, compound [A] having a high purity of not less than 85 mol % can be provided.
    Type: Grant
    Filed: July 21, 2000
    Date of Patent: August 13, 2002
    Assignee: Sumika Fine Chemicals Co., Ltd.
    Inventors: Shigeya Yamazaki, Hiroyuki Yumoto, Masami Igi
  • Publication number: 20020028944
    Abstract: An L-tartrate of a trans-(−)-4-(4-fluorophenyl)-3-hydroxymethylpiperidine compound, represented by the formula (I): 1
    Type: Application
    Filed: September 27, 2001
    Publication date: March 7, 2002
    Applicant: Sumika Fine Chemicals Co., Ltd.
    Inventors: Shigeya Yamazaki, Taro Ishibashi, Yoshihiro Kawada, Hiroyuki Yumoto, Taichi Yoshikawa, Masami Igi
  • Publication number: 20010053476
    Abstract: A lithium ion battery configured to yield a high energy density output by minimizing head space, i.e., wasted interior volume, within the battery case and/or by reducing electrical energy losses internal to the battery.
    Type: Application
    Filed: April 25, 2001
    Publication date: December 20, 2001
    Inventors: Alan Ruth, Andy Szyszkowski, Clay Kishiyama, Hiroyuki Yumoto, Hisashi Tsukamoto