Patents by Inventor Masaki Hirase

Masaki Hirase 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: 20230090463
    Abstract: A battery of the present disclosure includes a positive electrode, a negative electrode including graphite and zinc, and a solid electrolyte layer positioned between the positive electrode and the negative electrode. A ratio of a mass of zinc to a sum of a mass of graphite and the mass of zinc in the negative electrode is 10 mass % or more and 60 mass % or less. The above ratio may be 20 mass % or more and 40 mass % or less.
    Type: Application
    Filed: November 23, 2022
    Publication date: March 23, 2023
    Inventors: Masaki HIRASE, Shuji ITO, Seiji NISHIYAMA, Kunihiko MINEYA, Tadaaki MATSUMURA, Yusuke ITO
  • Publication number: 20230088683
    Abstract: A battery of the present disclosure includes a positive electrode, a negative electrode, and a solid electrolyte layer. The solid electrolyte layer is positioned between the positive electrode and the negative electrode. The solid electrolyte layer includes a solid electrolyte having lithium-ion conductivity. The negative electrode includes: a negative electrode current collector; and a negative electrode active material layer positioned between the negative electrode current collector and the solid electrolyte layer. The negative electrode active material layer has a plurality of columnar particles and is substantially free of an electrolyte. The columnar particles include silicon as a main component.
    Type: Application
    Filed: November 28, 2022
    Publication date: March 23, 2023
    Inventors: Shuji ITO, Yusuke ITO, Masaki HIRASE, Tadaaki MATSUMURA
  • Publication number: 20230080649
    Abstract: A battery of the present disclosure includes: a positive electrode; a negative electrode; and an electrolyte layer disposed between the positive electrode and the negative electrode, wherein the negative electrode includes a negative electrode current collector and a negative electrode active material layer, the negative electrode active material layer includes a plurality of silicon layers and a plurality of lithium silicate layers, and the silicon layer and the lithium silicate layer are alternately stacked.
    Type: Application
    Filed: November 23, 2022
    Publication date: March 16, 2023
    Inventors: Masaki HIRASE, Shuji ITO, Seiji NISHIYAMA, Kunihiko MINEYA, Tadaaki MATSUMURA, Yusuke ITO
  • Publication number: 20150132666
    Abstract: There is provided a positive electrode for a nonaqueous electrolyte secondary battery, the positive electrode being capable of improving the charge-discharge cycle characteristics of the nonaqueous electrolyte secondary battery. A positive electrode 12 of a nonaqueous electrolyte secondary battery 1 contains positive electrode active material particles. The positive electrode active material particles contain a lithium-containing transition metal oxide. The lithium-containing transition metal oxide has a crystal structure that belongs to the space group P63mc. A compound of at least one selected from the group consisting of boron, zirconium, aluminum, magnesium, titanium, and a rare-earth element is attached to surfaces of the positive electrode active material particles.
    Type: Application
    Filed: December 28, 2012
    Publication date: May 14, 2015
    Applicant: SANYO ELECTRIC CO., LTD.
    Inventors: Atsushi Ogata, Takeshi Ogasawara, Yasufumi Takahashi, Motoharu Saito, Masaki Hirase, Katsunori Yanagida, Masahisa Fujimoto
  • Patent number: 8563158
    Abstract: A lithium secondary battery includes a negative electrode, a positive electrode, and an electrolyte. The negative electrode includes a negative electrode current collector and a negative electrode active material layer. The negative electrode active material layer is provided on the negative electrode current collector. The negative electrode active material layer contains silicon and oxygen. A low oxygen content layer is provided in a portion of the negative electrode active material layer on the negative electrode current collector side, the low oxygen content layer having an oxygen content lower than that of the remaining portion of the negative electrode active material layer. The thickness of the low oxygen content layer is 25% or less of the thickness of the negative electrode active material layer.
    Type: Grant
    Filed: April 1, 2011
    Date of Patent: October 22, 2013
    Assignee: SANYO Electric Co., Ltd.
    Inventor: Masaki Hirase
  • Publication number: 20110244327
    Abstract: A lithium secondary battery includes a negative electrode, a positive electrode, and an electrolyte. The negative electrode includes a negative electrode current collector and a negative electrode active material layer. The negative electrode active material layer is provided on the negative electrode current collector. The negative electrode active material layer contains silicon and oxygen. A low oxygen content layer is provided in a portion of the negative electrode active material layer on the negative electrode current collector side, the low oxygen content layer having an oxygen content lower than that of the remaining portion of the negative electrode active material layer. The thickness of the low oxygen content layer is 25% or less of the thickness of the negative electrode active material layer.
    Type: Application
    Filed: April 1, 2011
    Publication date: October 6, 2011
    Applicant: SANYO ELECTRIC CO., LTD.
    Inventor: Masaki HIRASE
  • Patent number: 7897284
    Abstract: A lithium secondary battery is provided with a positive electrode, a negative electrode (1), a separator interposed between the positive and negative electrodes, and an electrode assembly having the negative electrode (1), the positive electrode, and the separator. The negative electrode (1) has a negative electrode current collector (11) and negative electrode active material layers (12), (13) formed on respective surfaces of the negative electrode current collector (11). The negative electrode active material layers are composed of an alloy containing silicon, which intercalates and deintercalates lithium, and iron, which does not intercalate or deintercalate lithium.
    Type: Grant
    Filed: September 27, 2006
    Date of Patent: March 1, 2011
    Assignee: Sanyo Electric Co., Ltd.
    Inventors: Kei Kobayashi, Hiromasa Yagi, Masaki Hirase, Daizo Jito, Katsunobu Sayama
  • Patent number: 7727580
    Abstract: A method of manufacturing an electrode for a lithium secondary battery in which a thin film of active material is deposited on a current collector is provided that eliminates adverse effects on the battery caused by protrusions adhered on an electrode surface. The method of manufacturing an electrode for lithium secondary batteries includes depositing a thin film of active material on a current collector using thin-film deposition equipment as shown in FIG. 1, and performing a compression process after depositing the thin film, whereby the heights of protrusions formed on the electrode surface are reduced.
    Type: Grant
    Filed: March 28, 2006
    Date of Patent: June 1, 2010
    Assignee: SANYO Electric Co., Ltd.
    Inventors: Masaki Hirase, Hiromasa Yagi, Daizo Jito, Kei Kobayashi, Katsunobu Sayama
  • Publication number: 20070077494
    Abstract: A lithium secondary battery is provided with a positive electrode, a negative electrode (1), a separator interposed between the positive and negative electrodes, and an electrode assembly having the negative electrode (1), the positive electrode, and the separator. The negative electrode (1) has a negative electrode current collector (11) and negative electrode active material layers (12), (13) formed on respective surfaces of the negative electrode current collector (11). The negative electrode active material layers are composed of an alloy containing silicon, which intercalates and deintercalates lithium, and iron, which does not intercalate or deintercalate lithium.
    Type: Application
    Filed: September 27, 2006
    Publication date: April 5, 2007
    Applicant: SANYO ELECTRIC CO., LTD.
    Inventors: Kei Kobayashi, Hiromasa Yagi, Masaki Hirase, Daizo Jito, Katsunobu Sayama
  • Publication number: 20060228467
    Abstract: A method of manufacturing an electrode for a lithium secondary battery in which a thin film of active material is deposited on a current collector is provided that eliminates adverse effects on the battery caused by protrusions adhered on an electrode surface. The method of manufacturing an electrode for lithium secondary batteries includes depositing a thin film of active material on a current collector using thin-film deposition equipment as shown in FIG. 1, and performing a compression process after depositing the thin film, whereby the heights of protrusions formed on the electrode surface are reduced.
    Type: Application
    Filed: March 28, 2006
    Publication date: October 12, 2006
    Inventors: Masaki Hirase, Hiromasa Yagi, Daizo Jito, Kei Kobayashi, Katsunobu Sayama
  • Publication number: 20060199371
    Abstract: A semiconductor device includes a substrate and wirings located on the substrate. A passivation film including a first insulating film containing an impurity is located on the wirings. The first insulating film is formed from silicon oxide film materials containing greater than one percent carbon.
    Type: Application
    Filed: May 19, 2006
    Publication date: September 7, 2006
    Applicant: SANYO ELECTRIC CO., LTD.
    Inventors: Hideki Mizuhara, Yasunori Inoue, Hiroyuki Watanabe, Masaki Hirase, Kaori Misawa, Hiroyuki Aoe, Kimihide Saito, Hiroyasu Ishihara
  • Patent number: 7045434
    Abstract: A method for manufacturing a semiconductor substrate including a mask aligning trench. The method includes forming the mask aligning trench and an element partitioning trench. The element partitioning and mask aligning trenches are filled with insulation. The insulation in the element partitioning trench is masked and the insulation in the mask aligning trench is etched. As a result, a residue of the insulation in the mask aligning trench is below the upper edge of the mask aligning trench. The mask aligning trench is easily detected. Thus, positioning a patterning mask on the substrate can be performed accurately.
    Type: Grant
    Filed: July 20, 2001
    Date of Patent: May 16, 2006
    Assignee: Sanyo Electric Co., Ltd.
    Inventors: Masaki Hirase, Satoru Shimada
  • Publication number: 20020030290
    Abstract: A method for manufacturing a semiconductor substrate including a mask aligning trench. The method includes forming the mask aligning trench and an element partitioning trench. The element partitioning and mask aligning trenches are filled with insulation. The insulation in the element partitioning trench is masked and the insulation in the mask aligning trench is etched. As a result, a residue of the insulation in the mask aligning trench is below the upper edge of the mask aligning trench. The mask aligning trench is easily detected. Thus, positioning a patterning mask on the substrate can be performed accurately.
    Type: Application
    Filed: July 20, 2001
    Publication date: March 14, 2002
    Applicant: SANYO ELECTRIC CO., LTD.
    Inventors: Masaki Hirase, Satoru Shimada
  • Publication number: 20010048147
    Abstract: A semiconductor device includes a substrate and wirings located on the substrate. A passivation film including a first insulating film containing an impurity is located on the wirings. The first insulating film is formed from silicon oxide film materials containing greater than one percent carbon.
    Type: Application
    Filed: March 9, 1998
    Publication date: December 6, 2001
    Inventors: HIDEKI MIZUHARA, YASUNORI INOUE, HIROYUKI WATANABE, MASAKI HIRASE, KAORI MISAWA, HIROYUKI AOE, KIMIHIDE SAITO, HIROYASU ISHIHARA
  • Patent number: 6326318
    Abstract: A semiconductor device and a process for producing the same. The device has two conducting layers that are spaced from each other and an organic insulating film for electrically insulating these two conducting layers from each other. The organic insulating film contains contact holes with plugs being embedded therein so as to electrically connect these two conducting layers by the plugs. The process contains a step of forming the organic insulating film on the lower conducting layer. An impurity having a kinetic energy is introduced into the organic insulating film. Next, contact holes are formed in the organic insulating film, and then plugs are formed in the contact holes. An upper conducting layer is formed on the organic insulating film so as to be electrically connected to the plugs.
    Type: Grant
    Filed: March 8, 2000
    Date of Patent: December 4, 2001
    Assignee: Sanyo Electric Co., Ltd.
    Inventors: Hiroyuki Watanabe, Hideki Mizuhara, Kaori Misawa, Masaki Hirase, Hiroyuki Aoe
  • Patent number: 6268657
    Abstract: A semiconductor device and a process for producing the same. The device has two conducting layers that are spaced from each other and an insulating film for electrically insulating these two conducting layers from each other. The insulating film contains contact holes with plugs being embedded therein so as to electrically connect these two conducting layers by the plugs. The process contains a step of forming the insulating film on the lower conducting layer. An impurity having a kinetic energy is introduced into the insulating film. Next, contact holes are formed in the insulating film, and then plugs are formed in the contact holes. An upper conducting layer is formed on the insulating film so as to be electrically connected to the plugs.
    Type: Grant
    Filed: June 18, 1997
    Date of Patent: July 31, 2001
    Assignee: Sanyo Electric Co., Ltd.
    Inventors: Hiroyuki Watanabe, Hideki Mizuhara, Kaori Misawa, Masaki Hirase, Hiroyuki Aoe
  • Patent number: 6214749
    Abstract: A semiconductor producing method includes the steps of: forming an SOG pre-film on a semimanufactured semiconductor device by means of spin-on-glass (SOG) process; and forming a modified SOG film by doping the SOG pre-film with at least one impurity ion selected from: inert gas ions; simple ions of Groups IIIb, IVb, Vb, VIb, VIIb, IVa and Va elements; and ions of compounds containing any one of Groups IIIb, IVb, Vb, VIb, VIIb, IVa and Va elements.
    Type: Grant
    Filed: October 21, 1997
    Date of Patent: April 10, 2001
    Assignee: Sanyo Electric Co., Ltd.
    Inventors: Hiroyuki Watanabe, Hideki Mizuhara, Kaori Misawa, Masaki Hirase, Hiroyuki Aoe
  • Patent number: 6177343
    Abstract: A semiconductor device and a process for producing the same. The device has two conducting layers that are spaced from each other and an insulating film for electrically insulating these two conducting layers from each other. The insulating film contains contact holes with plugs being embedded therein so as to electrically connect these two conducting layers by the plugs. The process contains a step of forming the insulating film on the lower conducting layer. An impurity having a kinetic energy is introduced into the insulating film. Next, contact holes are formed in the insulating film, and then plugs are formed in the contact holes. An upper conducting layer is formed on the insulating film so as to be electrically connected to the plugs.
    Type: Grant
    Filed: October 28, 1999
    Date of Patent: January 23, 2001
    Assignee: Sanyo Electric Co., Ltd.
    Inventors: Hiroyuki Watanabe, Hideki Mizuhara, Kaori Misawa, Masaki Hirase, Hiroyuki Aoe