Patents by Inventor Kazuma Hanai

Kazuma Hanai 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: 20230094444
    Abstract: A method for producing an electrode material for a lithium-ion secondary battery. The method includes the following steps: (a) mixing components of a basic ingredient or active substance of electrode material and a conductive carbon material to obtain a conductive carbon material-composited material; (b) mixing the conductive carbon material-composited material and a surface layer-forming material; an (c) burning the mixture obtained at step (b) to obtain the electrode material. Also, a lithium-ion secondary battery including an electrode which includes the material.
    Type: Application
    Filed: November 28, 2022
    Publication date: March 30, 2023
    Applicant: HYDRO-QUÉBEC
    Inventors: Vincent GARIEPY, Abdelbast GUERFI, Kazuma Hanai, Pierre HOVINGTON, Shinji Saito, Takehiko Sawai, Kazunori Urao, Karim ZAGHIB
  • Patent number: 11545668
    Abstract: A method for producing an electrode material for a lithium-ion secondary battery. The method includes the following steps: (a) mixing components of a basic ingredient or active substance of electrode material and a conductive carbon material to obtain a conductive carbon material-composited material; (b) mixing the conductive carbon material-composited material and a surface layer-forming material; an (c) burning the mixture obtained at step (b) to obtain the electrode material. Also, a lithium-ion secondary battery including an electrode which comprises the material.
    Type: Grant
    Filed: October 21, 2013
    Date of Patent: January 3, 2023
    Assignee: HYDRO-QUEBEC
    Inventors: Vincent Gariepy, Abdelbast Guerfi, Kazuma Hanai, Pierre Hovington, Shinji Saito, Takehiko Sawai, Kazunori Urao, Karim Zaghib
  • Patent number: 10403893
    Abstract: A positive electrode material is used to produce a positive electrode of a lithium secondary battery, the positive electrode material being a composite lithium material that includes a first lithium compound and a second lithium compound. For instance, the first lithium compound is in the form of particles and comprises at least one compound selected from a layered lithium compound and a spinel-type lithium compound. Preferably, the second lithium compound comprises at least one compound selected from a lithium-containing phosphate compound and a lithium-containing silicate compound. An amorphous carbon material layer and/or graphene-structured carbon material layer is present on the entire surface of the first lithium compound and the second lithium compound. The second lithium compound forms a thin-film layer on part or the entirety of the carbon material layer present on the surface of the first lithium compound particles.
    Type: Grant
    Filed: August 21, 2014
    Date of Patent: September 3, 2019
    Assignees: HYDRO-QUEBEC, SEI CORPORATION
    Inventors: Takehiko Sawai, Shinji Saito, Kazunori Urao, Kazuma Hanai, Karim Zaghib, Abdelbast Guerfi, Martin Dontigny
  • Publication number: 20170324089
    Abstract: The present invention provides an electrode material, for a lithium battery, which is capable of achieving a high-energy density and a high output and continuing its properties for many years, a method of producing the electrode material, and the lithium battery. The electrode material for use in positive and negative electrodes of a lithium battery is formed as a complex by combining a carbon-based conductive material and an electrode active material with each other. The carbon-based conductive material of the electrode material is subjected to hydrophilic treatment by using a gas containing fluorine gas. The electrode material is formed as the complex by calcining a mixture of the carbon-based conductive material subjected to the hydrophilic treatment and the electrode active material in the presence of fluororesin.
    Type: Application
    Filed: November 30, 2016
    Publication date: November 9, 2017
    Inventors: Takehiko SAWAI, Shinji SAITO, Kazunori URAO, Jun NAKAGAWA, Kazuma HANAI
  • Patent number: 9660269
    Abstract: The present invention provides positive and negative electrodes, for a lithium secondary battery, allowing a battery to be quickly and fully charged in a very short period of time, for example, within one minute and allowing the battery to be used for vehicles at low temperatures. An organic electrolytic solution is permeated into an electrode group formed by winding positive and negative electrodes or by laminating the positive and negative electrodes one upon another with a separator being interposed therebetween to repeatingly occlude and release lithium ions. The positive electrode active substance and the negative electrode active substance have at least one phase selected from among a graphene phase and an amorphous phase as a surface layer thereof. An activated carbon layer is formed on a surface of the positive electrode active substance and that of the negative electrode active substance.
    Type: Grant
    Filed: January 16, 2013
    Date of Patent: May 23, 2017
    Assignee: SEI CORPORATION
    Inventors: Takehiko Sawai, Shinji Saito, Kazuma Hanai
  • Publication number: 20170122943
    Abstract: The invention provides a method for measuring CK-MB in a sample by reacting the sample with a first antibody against CK-MB, a second antibody against CK-MB which recognizes an epitope different from that recognized by the first antibody, and an anti-CK-B antibody which recognizes a region of the 1st to 100th amino acid from N-terminus of the amino acid sequence of the subunit B of creatine kinase (step 1); measuring an optical change generated by the reaction (step 2); and determining a quantity of CK-MB in the sample on the basis of the result obtained in the step 2 (step 3). The invention also provides a kit to be used in the method, and a method for avoiding influence of creatine kinase BB isozyme in measuring CK-MB, comprising treating a sample with the anti-CK-B antibody.
    Type: Application
    Filed: April 13, 2015
    Publication date: May 4, 2017
    Applicant: WAKO PURE CHEMICAL INDUSTRIES, LTD.
    Inventors: Kazuma HANAI, Shinichi ODAGAKI, Tsutomu MASUDA
  • Publication number: 20170084920
    Abstract: The present invention provides an electrode material, for a lithium battery, which is capable of achieving a high-energy density and a high output and continuing its properties for many years, a method of producing the electrode material, and the lithium battery. The electrode material for use in positive and negative electrodes of a lithium battery is formed as a complex by combining a carbon-based conductive material and an electrode active material with each other. The carbon-based conductive material of the electrode material is subjected to hydrophilic treatment by using a gas containing fluorine gas. The electrode material is formed as the complex by calcining a mixture of the carbon-based conductive material subjected to the hydrophilic treatment and the electrode active material in the presence of fluororesin.
    Type: Application
    Filed: November 30, 2016
    Publication date: March 23, 2017
    Inventors: Takehiko SAWAI, Shinji SAITO, Kazunori URAO, Jun NAKAGAWA, Kazuma HANAI
  • Publication number: 20160204424
    Abstract: A positive electrode material is used to produce a positive electrode of a lithium secondary battery, the positive electrode material being a composite lithium material that includes a first lithium compound and a second lithium compound. For instance, the first lithium compound is in the form of particles and comprises at least one compound selected from a layered lithium compound and a spinel-type lithium compound. Preferably, the second lithium compound comprises at least one compound selected from a lithium-containing phosphate compound and a lithium-containing silicate compound. An amorphous carbon material layer and/or graphene-structured carbon material layer is present on the entire surface of the first lithium compound and the second lithium compound. The second lithium compound forms a thin-film layer on part or the entirety of the carbon material layer present on the surface of the first lithium compound particles.
    Type: Application
    Filed: August 21, 2014
    Publication date: July 14, 2016
    Applicants: HYDRO-QUEBEC, SEI CORP.
    Inventors: Takehiko SAWAI, Shinji SAITO, Kazunori URAO, Kazuma HANAI, Karim ZAGHIB, Abdelbast GUERFI, Martin DONTIGNY
  • Publication number: 20150295240
    Abstract: The present invention provides positive and negative electrodes, for a lithium secondary battery, allowing a battery to be quickly and fully charged in a very short period of time, for example, within one minute and allowing the battery to be used for vehicles at low temperatures. An organic electrolytic solution is permeated into an electrode group formed by winding positive and negative electrodes or by laminating the positive and negative electrodes one upon another with a separator being interposed therebetween to repeatingly occlude and release lithium ions. The positive electrode active substance and the negative electrode active substance have at least one phase selected from among a graphene phase and an amorphous phase as a surface layer thereof. An activated carbon layer is formed on a surface of the positive electrode active substance and that of the negative electrode active substance.
    Type: Application
    Filed: January 16, 2013
    Publication date: October 15, 2015
    Applicant: SEI Corporation
    Inventors: Takehiko Sawai, Shinji Saito, Kazuma Hanai
  • Publication number: 20150270554
    Abstract: A method for producing an electrode material for a lithium-ion secondary battery. The method includes the following steps: (a) mixing components of a basic ingredient or active substance of electrode material and a conductive carbon material to obtain a conductive carbon material-composited material; (b) mixing the conductive carbon material-composited material and a surface layer-forming material; an (c) burning the mixture obtained at step (b) to obtain the electrode material. Also, a lithium-ion secondary battery including an electrode which comprises the material.
    Type: Application
    Filed: October 21, 2013
    Publication date: September 24, 2015
    Applicants: SEI CORPORATION, HYDRO-QUEBEC
    Inventors: Vincent Gariepy, Abdelbast Guerfi, Kazuma Hanai, Pierre Hovington, Shinji Saito, Takehiko Sawai, Kazunori Urao, Karim Zaghib