Patents by Inventor Yasunori Baba

Yasunori Baba 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: 20150249243
    Abstract: Provided are a separator-integrated electrode and a nonaqueous electrolyte secondary battery with a reduced risk of a short circuit between electrodes due to precipitation of metallic lithium on a surface of an electrode mixture layer. A positive electrode (12) configured as a separator-integrated electrode includes a positive current collector (22), a positive active material layer (24) formed on a surface thereof, a first porous layer (26) formed on a surface of the positive active material layer (24) and containing inorganic particles, and a second porous layer (28) formed on a surface of the first porous layer (26) and made of resin fibers.
    Type: Application
    Filed: August 26, 2013
    Publication date: September 3, 2015
    Applicants: SANYO Electric Co., Ltd., PANASONIC CORPORATION
    Inventors: Toshifumi Nagino, Yasunori Baba, Atsushi Fukui
  • Patent number: 9077024
    Abstract: [Problem] A non-aqueous electrolyte battery is provided that shows good cycle performance and good storage performance under high temperature conditions and exhibits high reliability even with a battery configuration featuring high capacity. A method of manufacturing the battery is also provided.
    Type: Grant
    Filed: March 16, 2007
    Date of Patent: July 7, 2015
    Assignee: SANYO Electric Co., Ltd.
    Inventors: Takeshi Ogasawara, Hiroshi Minami, Naoki Imachi, Atsushi Kaiduka, Yasunori Baba, Yoshinori Kida, Shin Fujitani
  • Publication number: 20130236939
    Abstract: The present application provides a method for producing organic acid, such as acetic acid, propionic acid, butyric acid, or another high-quality raw material designed for methane fermentation and obtained by converting waste paper and other forms of cellulose-based biomass to organic acid, wherein said method comprising a step for reacting rumen fluid collected from a ruminant animal with cellulose-containing waste matter. This method provides the effective use of cellulose-containing waste matter, which is a high-quality fermentation resource.
    Type: Application
    Filed: October 21, 2011
    Publication date: September 12, 2013
    Applicant: TOHOKU UNIVERSITY
    Inventors: Yutaka Nakai, Yasunori Baba, Chika Tada, Yasuhiro Fukuda
  • Patent number: 8512898
    Abstract: To obtain a separator for a nonaqueous electrolyte battery that has an excellent nonaqueous electrolyte permeability into an electrode and an excellent electrolyte retentivity of the electrode and achieves a large capacity, a high energy density and a good high-temperature charge characteristic. A separator 3 used for a nonaqueous electrolyte battery is formed by disposing a porous layer 2 made of inorganic fine particles and a resin binder on a porous separator substrate 1, the resin binder is made of at least one resin selected from the group consisting of polyimide resins, polyamide resins and polyamideimide resins and the molecular chain of the resin has a halogen atom content of 10% to 30% by weight, and the content of the resin binder in the porous layer is 5% by weight or more.
    Type: Grant
    Filed: September 22, 2008
    Date of Patent: August 20, 2013
    Assignees: SANYO Electronics Co., Ltd., TORAY Industries, Inc.
    Inventors: Yasunori Baba, Naoki Imachi, Atsushi Nakajima, Michihiko Irie, Masanori Nakamura
  • Patent number: 8372544
    Abstract: A non-aqueous electrolyte secondary battery is provided that remarkably improves battery reliability by quickly lowering the potential of the positive electrode while preventing separator shrinkage at high temperatures. A separator has on its surface a shrinkage-prevention-layer formed portion (3a), in which a layer for preventing separator shrinkage is formed, and a shrinkage-prevention-layer unformed portion (3b), in which the layer for preventing separator shrinkage is not formed. A positive electrode current collector and a negative electrode current collector respectively have a positive electrode current collector exposed portion (1b) and a negative electrode current collector exposed portion (2b). The shrinkage-prevention-layer unformed portion (3b) of the separator is disposed at a region where the current collector exposed portions (1b, 2b) face each other.
    Type: Grant
    Filed: March 28, 2008
    Date of Patent: February 12, 2013
    Inventors: Yasunori Baba, Naoki Imachi, Takeshi Ogasawara
  • Patent number: 8293406
    Abstract: A non-aqueous electrolyte secondary battery includes a positive electrode, a negative electrode, and a non-aqueous electrolyte. The positive electrode employs a positive electrode active material wherein oxide containing Al and/or hydroxide containing Al having a protruding-shape is uniformly distributed and adhered to the surface of a positive electrode active material particle.
    Type: Grant
    Filed: September 23, 2008
    Date of Patent: October 23, 2012
    Assignee: SANYO Electric Co., Ltd.
    Inventors: Takeshi Ogasawara, Naoki Imachi, Yasunori Baba
  • Patent number: 8053112
    Abstract: A non-aqueous electrolyte secondary battery includes a positive electrode having a positive electrode active material layer containing a positive electrode active material, a negative electrode having a negative electrode active material, a separator interposed between the positive electrode and the negative electrode, an electrode assembly comprising the positive electrode, the negative electrode, and the separator, and a non-aqueous electrolyte impregnated in the electrode assembly. The positive electrode active material contains at least cobalt or manganese. The positive electrode has an end-of-charge potential of 4.40 V versus the potential of a lithium reference electrode. The positive electrode active material layer is superficially coated with a polymer layer composed of a polymer having a partially cross-linked structure and a molecular weight of 800,000 or greater.
    Type: Grant
    Filed: March 16, 2007
    Date of Patent: November 8, 2011
    Assignee: SANYO Electric Co., Ltd.
    Inventors: Atsushi Kaiduka, Yasunori Baba, Naoki Imachi, Yoshinori Kida, Shin Fujitani
  • Publication number: 20100255380
    Abstract: To obtain a nonaqueous electrolyte battery that has an excellent nonaqueous electrolyte permeability into an electrode and an excellent electrolyte retentivity of the electrode and achieves a large capacity, a high energy density and a good high-temperature charge characteristic. A separator used for a nonaqueous electrolyte battery is formed by disposing a porous layer made of inorganic fine particles and a resin binder on a porous separator substrate. The resin binder is made of at least one resin selected from the group consisting of polyimide resins and polyamideimide resins, the resin having an acid value of 5.6 to 28.0 KOHmg/g and a logarithmic viscosity of 0.5 to 1.5 dl/g. The content of the resin binder in the porous layer is 5% by weight or more.
    Type: Application
    Filed: September 22, 2008
    Publication date: October 7, 2010
    Applicants: SANYO ELECTRIC CO., LTD., TOYO BOSEKI KABUSHIKI KAISHA
    Inventors: Yasunori Baba, Naoki Imachi, Atsushi Nakajima, Michihiko Irie, Masanori Nakamura
  • Publication number: 20100233547
    Abstract: To obtain a separator for a nonaqueous electrolyte battery that has an excellent nonaqueous electrolyte permeability into an electrode and an excellent electrolyte retentivity of the electrode and achieves a large capacity, a high energy density and a good high-temperature charge characteristic. A separator 3 used for a nonaqueous electrolyte battery is formed by disposing a porous layer 2 made of inorganic fine particles and a resin binder on a porous separator substrate 1, the resin binder is made of at least one resin selected from the group consisting of polyimide resins, polyamide resins and polyamideimide resins and the molecular chain of the resin has a halogen atom content of 10% to 30% by weight, and the content of the resin binder in the porous layer is 5% by weight or more.
    Type: Application
    Filed: September 22, 2008
    Publication date: September 16, 2010
    Applicants: SANYO ELECTRIC CO., LTD., TOYO BOSEKI KABUSHIKI KAISHA
    Inventors: Yasunori Baba, Naoki Imachi, Atsushi Nakajima, Michihiko Irie, Masanori Nakamura
  • Publication number: 20090291355
    Abstract: The present invention provides a non-aqueous electrolyte battery, etc. that can reduce the manufacturing cost of the battery, meet the need for increased battery capacity, and at the same time improve various battery characteristics, such as high-rate charge-discharge capability, high-temperature cycle performance, and storage performance. A porous layer (32) is disposed between a separator and a negative electrode (13). The porous layer has a non-aqueous electrolyte permeability higher than that in TD of the separator. An excess electrolyte is contained in at least a portion of an internal space of a battery case that is other than an electrode assembly, and the excess electrolyte and at least a portion of the porous layer are in contact with each other.
    Type: Application
    Filed: September 19, 2006
    Publication date: November 26, 2009
    Applicant: SANYO ELECTRIC CO., LTD.
    Inventors: Yasunori Baba, Naoki Imachi, Yuko Sibutani, Akira Mikami, Hiroyuki Fujimoto, Shigeki Matsuta, Shin Fujitani
  • Publication number: 20090208840
    Abstract: [Problem] A non-aqueous electrolyte battery is provided that shows good cycle performance and good storage performance under high temperature conditions and exhibits high reliability even with a battery configuration featuring high capacity. A method of manufacturing the battery is also provided.
    Type: Application
    Filed: March 16, 2007
    Publication date: August 20, 2009
    Applicant: SANYO ELECTRIC CO., LTD.
    Inventors: Takeshi Ogasawara, Hiroshi Minami, Naoki Imachi, Atsushi Kaiduka, Yasunori Baba, Yoshinori Kida, Shin Fujitani
  • Publication number: 20090197181
    Abstract: [Problem] A non-aqueous electrolyte battery is provided that shows good cycle performance and good storage performance under high temperature conditions and exhibits high reliability even with a battery configuration featuring high capacity. A method of manufacturing the battery is also provided.
    Type: Application
    Filed: March 16, 2007
    Publication date: August 6, 2009
    Applicant: SANYO ELECTRIC CO., LTD.
    Inventors: Nobuhiro Sakitani, Takeshi Ogasawara, Hiroshi Minami, Naoki Imachi, Atsushi Kaiduka, Yasunori Baba, Yoshinori Kida, Shin Fujitani
  • Publication number: 20090136848
    Abstract: [Problem] A non-aqueous electrolyte battery is provided that shows good cycle performance and good storage performance under high temperature conditions and exhibits high reliability even with a battery configuration featuring high capacity. A method of manufacturing the battery is also provided. [Means for Solving the Problem] A non-aqueous electrolyte battery is characterized in that the positive electrode active material contains at least cobalt or manganese, the separator includes a porous separator main body and a coating layer formed on at least one surface of the separator main body, and the coating layer contains filler particles and a water-insoluble binder.
    Type: Application
    Filed: March 16, 2007
    Publication date: May 28, 2009
    Applicant: SANYO ELECTRIC CO., LTD.
    Inventors: Hiroshi Minami, Takeshi Ogasawara, Naoki Imachi, Atsushi Kaiduka, Yasunori Baba, Yoshinori Kida, Shin Fujitani
  • Publication number: 20090081546
    Abstract: A non-aqueous electrolyte secondary battery includes a positive electrode, a negative electrode, and a non-aqueous electrolyte. The positive electrode employs a positive electrode active material wherein oxide containing Al and/or hydroxide containing Al having a protruding-shape is uniformly distributed and adhered to the surface of a positive electrode active material particle.
    Type: Application
    Filed: September 23, 2008
    Publication date: March 26, 2009
    Applicant: SANYO Electric Co., Ltd.
    Inventors: Takeshi OGASAWARA, Naoki IMACHI, Yasunori BABA
  • Publication number: 20080274410
    Abstract: A non-aqueous electrolyte secondary battery is provided that remarkably improves battery reliability by quickly lowering the potential of the positive electrode while preventing separator shrinkage at high temperatures. A separator has on its surface a shrinkage-prevention-layer formed portion (3a), in which a layer for preventing separator shrinkage is formed, and a shrinkage-prevention-layer unformed portion (3b), in which the layer for preventing separator shrinkage is not formed. A positive electrode current collector and a negative electrode current collector respectively have a positive electrode current collector exposed portion (1b) and a negative electrode current collector exposed portion (2b). The shrinkage-prevention-layer unformed portion (3b) of the separator is disposed at a region where the current collector exposed portions (1b, 2b) face each other.
    Type: Application
    Filed: March 28, 2008
    Publication date: November 6, 2008
    Inventors: Yasunori Baba, Naoki Imachi, Takeshi Ogasawara
  • Publication number: 20080241666
    Abstract: A battery unit has a plurality of non-aqueous electrolyte secondary batteries connected in series, wherein at least two types of non-aqueous electrolyte secondary batteries (A1), (B1a) having different potentials at which lithium is released from the positive electrode active material and at which the electrical resistance in the battery increases during charge are connected in series.
    Type: Application
    Filed: January 30, 2008
    Publication date: October 2, 2008
    Inventors: Yasunori Baba, Naoki Imachi, Shin Fujitani
  • Publication number: 20070254209
    Abstract: A battery has a positive electrode active material containing an olivine lithium phosphate-based compound having an elemental composition represented as LiMPO4, where M is a transition metal including at least Fe. The product of a separator thickness x (?m) and a separator porosity y (%) is controlled to be equal to or less than 1500 (?m·%). A porous layer containing inorganic particles and a binder is disposed between the separator and the positive electrode and/or between the separator and the negative electrode.
    Type: Application
    Filed: March 16, 2007
    Publication date: November 1, 2007
    Inventors: Yasunori Baba, Naoki Imachi, Atsushi Kaiduka, Yoshinori Kida, Shin Fujitani
  • Publication number: 20070218369
    Abstract: A non-aqueous electrolyte secondary battery includes a positive electrode having a positive electrode active material layer containing a positive electrode active material, a negative electrode having a negative electrode active material, a separator interposed between the positive electrode and the negative electrode, an electrode assembly comprising the positive electrode, the negative electrode, and the separator, and a non-aqueous electrolyte impregnated in the electrode assembly. The positive electrode active material contains at least cobalt or manganese. The positive electrode has an end-of-charge potential of 4.40 V versus the potential of a lithium reference electrode. The positive electrode active material layer is superficially coated with a polymer layer composed of a polymer having a partially cross-linked structure and a molecular weight of 800,000 or greater.
    Type: Application
    Filed: March 16, 2007
    Publication date: September 20, 2007
    Inventors: Atsushi Kaiduka, Yasunori Baba, Naoki Imachi, Yoshinori Kida, Shin Fujitani