Patents by Inventor Masatoshi Honma

Masatoshi Honma 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: 9786912
    Abstract: The invention provides a low-cost, efficient method for producing lithium titanate that is useful for applications in electric storage devices. The desired lithium titanate can be obtained by heating at least (1) titanium oxide having a BET single point specific surface area of 50 to 450 m2/g based on nitrogen adsorption and (2) a lithium compound. Preferably the titanium oxide and lithium compound are heated together with (3) a lithium titanate compound having the same crystal structure as the desired lithium titanate. Preferably these ingredients are dry-mixed before heating.
    Type: Grant
    Filed: April 26, 2012
    Date of Patent: October 10, 2017
    Assignee: ISHIHARA SANGYO KAISHA, LTD.
    Inventors: Masatoshi Honma, Kazuyoshi Takeshima, Tsunehisa Takeuchi, Atsushi Ishizawa, Yusuke Okuda
  • Patent number: 9466833
    Abstract: The invention provides a low-cost, efficient method for producing lithium titanate that is useful for applications in electric storage devices. The desired lithium titanate can be obtained by heating at least (1) titanium oxide having a BET single point specific surface area of 50 to 450 m2/g based on nitrogen adsorption and (2) a lithium compound. Preferably the titanium oxide and lithium compound are heated together with (3) a lithium titanate compound having the same crystal structure as the desired lithium titanate. Preferably these ingredients are dry-mixed before heating.
    Type: Grant
    Filed: April 26, 2012
    Date of Patent: October 11, 2016
    Assignee: ISHIHARA SANGYO KAISHA, LTD.
    Inventors: Masatoshi Honma, Kazuyoshi Takeshima, Tsunehisa Takeuchi, Atsushi Ishizawa, Yusuke Okuda
  • Patent number: 9452940
    Abstract: Disclosed is lithium titanate having excellent rate properties and useful for electricity storage devices, which is produced by preparing lithium titanate secondary particles that are aggregates of lithium titanate primary particles and forming at least macro-pores on the surfaces of the secondary particles. The lithium titanate can be produced by a process which comprises drying and granulating a slurry comprising crystalline titan oxide, a titanic acid compound and a lithium compound and firing the granulated product to thereby produce lithium titanate secondary particles, wherein (1) the crystalline titan oxide to be used comprises at least two types of crystalline titan oxide particles having different average particle diameters from each other, and/or (2) the crystalline titan oxide is used in an amount at least four-fold larger than that of the titanic acid compound in terms of TiO2 content by weight.
    Type: Grant
    Filed: July 29, 2015
    Date of Patent: September 27, 2016
    Assignee: ISHIHARA SANGYO KAISHA, LTD.
    Inventors: Nariaki Moriyama, Masatoshi Honma, Kazuyoshi Takeshima, Yusuke Okuda, Naoya Nagahashi
  • Patent number: 9446964
    Abstract: Provided is a process for manufacturing, at a low cost and efficiently, lithium titanium oxides which are useful for electricity storage devices. A desired lithium titanium oxide can be obtained by heating at least both (1) a titanium compound and (2) a lithium compound that has a volume-mean particle diameter of 5 ?m or less. The lithium compound is preferably obtained by adjusting the volume-mean particle diameter to 5 ?m or less by pulverizing. It is preferable that the titanium compound and the lithium compound are heated together with (3) a lithium titanium oxide compound that has the same crystal structure as that of objective lithium titanium oxide. It is preferable that these materials are dry-blended prior to the heating.
    Type: Grant
    Filed: April 26, 2012
    Date of Patent: September 20, 2016
    Assignee: ISHIHARA SANGYO KAISHA, LTD.
    Inventors: Kazuyoshi Takeshima, Tsunehisa Takeuchi, Masatoshi Honma, Yusuke Okuda
  • Patent number: 9428396
    Abstract: A method for producing a lithium titanate precursor includes the step of grinding a lithium compound and a titanium compound in a state where these compounds coexist. More preferably, a method for producing a lithium titanate precursor includes the steps of; mixing a lithium compound and a titanium compound; and grinding the lithium compound and the titanium compound in a state where these compounds coexist by the mixing.
    Type: Grant
    Filed: April 26, 2012
    Date of Patent: August 30, 2016
    Assignee: ISHIHARA SANGYO KAISHA, LTD
    Inventors: Masatoshi Honma, Kazuyoshi Takeshima, Yusuke Okuda, Tsunehisa Takeuchi
  • Publication number: 20160009567
    Abstract: Disclosed is lithium titanate having excellent rate properties and useful for electricity storage devices, which is produced by preparing lithium titanate secondary particles that are aggregates of lithium titanate primary particles and forming at least macro-pores on the surfaces of the secondary particles. The lithium titanate can be produced by a process which comprises drying and granulating a slurry comprising crystalline titan oxide, a titanic acid compound and a lithium compound and firing the granulated product to thereby produce lithium titanate secondary particles, wherein (1) the crystalline titan oxide to be used comprises at least two types of crystalline titan oxide particles having different average particle diameters from each other, and/or (2) the crystalline titan oxide is used in an amount at least four-fold larger than that of the titanic acid compound in terms of TiO2 content by weight.
    Type: Application
    Filed: July 29, 2015
    Publication date: January 14, 2016
    Inventors: Nariaki MORIYAMA, Masatoshi HONMA, Kazuyoshi TAKESHIMA, Yusuke OKUDA, Naoya NAGAHASHI
  • Patent number: 9126847
    Abstract: Disclosed is lithium titanate having excellent rate properties and useful for electricity storage devices, which is produced by preparing lithium titanate secondary particles that are aggregates of lithium titanate primary particles and forming at least macro-pores on the surfaces of the secondary particles. The lithium titanate can be produced by a process which comprises drying and granulating a slurry comprising crystalline titan oxide, a titanic acid compound and a lithium compound and firing the granulated product to thereby produce lithium titanate secondary particles, wherein (1) the crystalline titan oxide to be used comprises at least two types of crystalline titan oxide particles having different average particle diameters from each other, and/or (2) the crystalline titan oxide is used in an amount at least four-fold larger than that of the titanic acid compound in terms of TiO2 content by weight.
    Type: Grant
    Filed: May 25, 2010
    Date of Patent: September 8, 2015
    Assignee: ISHIHARA SANGYO KAISHA, LTD.
    Inventors: Nariaki Moriyama, Masatoshi Honma, Kazuyoshi Takeshima, Yusuke Okuda, Naoya Nagahashi
  • Patent number: 8900490
    Abstract: This invention provides a titanic acid compound-type electrode active material having a high battery capacity and, at the same time, having excellent cycle characteristics. The titanic acid compound exhibits an X-ray diffraction pattern corresponding to a bronze-type titanium dioxide except for a peak for a (003) face and a (?601) face and having a lattice spacing difference between the (003) face and the (?601) face, i.e., d(003)?d(?601), of not more than 0.0040 nm. The titanic acid compound may be produced by reacting a layered alkali metal titanate, represented by a compositional formula MxM?x/3Ti2?x/3O4 wherein M and M?, which may be the same or different, represent an alkali metal; and x is in the range of 0.50 to 1.0, with an acidic compound and then heating the reaction product at a temperature in the range of 250 to 450° C.
    Type: Grant
    Filed: August 27, 2008
    Date of Patent: December 2, 2014
    Assignee: Ishihara Sangyo Kaisha, Ltd.
    Inventors: Hirofumi Taniguchi, Masatoshi Honma
  • Patent number: 8724293
    Abstract: Disclosed is a storage device comprising a positive electrode material containing graphite; a negative electrode material containing an oxide of at least one metal element selected from Ti, Zr, V, Cr, Mo, Mn, Fe, Co, Ni, Cu, Zn, Sn, Sb, Bi, W and Ta, which may preferably contains a metal oxide containing at least Ti as a metal element; and an electrolyte solution. This storage device has high capacitance and high discharge voltage, thereby having high energy. Consequently, this storage device can have high energy density, while being excellent in cycle performances and rate performances.
    Type: Grant
    Filed: October 19, 2007
    Date of Patent: May 13, 2014
    Assignee: Ishihara Sangyo Kaisha, Ltd.
    Inventors: Masaki Yoshio, Toshihiko Kawamura, Nariaki Moriyama, Masatoshi Honma, Tokuo Suita, Hirofumi Taniguchi, Tomoyuki Sotokawa
  • Publication number: 20140079625
    Abstract: The invention provides a low-cost, efficient method for producing lithium titanate that is useful for applications in electric storage devices. The desired lithium titanate can be obtained by heating at least (1) titanium oxide having a BET single point specific surface area of 50 to 450 m2/g based on nitrogen adsorption and (2) a lithium compound. Preferably the titanium oxide and lithium compound are heated together with (3) a lithium titanate compound having the same crystal structure as the desired lithium titanate. Preferably these ingredients are dry-mixed before heating.
    Type: Application
    Filed: April 26, 2012
    Publication date: March 20, 2014
    Inventors: Masatoshi Honma, Kazuyoshi Takeshima, Tsunehisa Takeuchi, Atsushi Ishizawa, Yusuke Okuda
  • Publication number: 20140048968
    Abstract: A method for producing a lithium titanate precursor includes the step of grinding a lithium compound and a titanium compound in a state where these compounds coexist. More preferably, a method for producing a lithium titanate precursor includes the steps of; mixing a lithium compound and a titanium compound; and grinding the lithium compound and the titanium compound in a state where these compounds coexist by the mixing.
    Type: Application
    Filed: April 26, 2012
    Publication date: February 20, 2014
    Applicant: ISHIHARA SANGYO KAISHA, LTD
    Inventors: Masatoshi Honma, Kazuyoshi Takeshima, Yusuke Okuda, Tsunehisa Takeuchi
  • Patent number: 8652351
    Abstract: This invention provides a titanic acid compound-type electrode active material having a high battery capacity and, at the same time, having excellent cycle characteristics. The titanic acid compound exhibits an X-ray diffraction pattern corresponding to a bronze-type titanium dioxide except for a peak for a (200) plane and having a peak intensity ratio between the (001) plane and the (200) plane, i.e., I(200)/I(001), of not more than 0.2. The titanic acid compound may be produced by heat dehydrating H2Ti3O7 at a temperature in the range of 200 to 330° C., by heat dehydrating H2Ti4O9 at a temperature in the range of 250 to 650° C., or by heat dehydrating H2Ti5O11 at a temperature in the range of 200 to 600° C.
    Type: Grant
    Filed: August 27, 2008
    Date of Patent: February 18, 2014
    Assignee: Ishihara Sangyo Kaisha, Ltd.
    Inventors: Tomoyuki Sotokawa, Nariaki Moriyama, Masatoshi Honma, Tokuo Suita
  • Publication number: 20120261622
    Abstract: Disclosed is a lithium titanate that, when used as a positive electrode active material in a lithium secondary battery having a metallic lithium negative electrode, provides a discharge capacity at a discharge rate of 30 C that is at least 75% of the discharge capacity at a discharge rate of 0.25 C. The disclosed lithium titanate can be obtained by drying, and then firing in an inert atmosphere, a slurry that contains, at least, a lithium compound, a titanium compound, a surfactant, and a carbon material.
    Type: Application
    Filed: December 20, 2010
    Publication date: October 18, 2012
    Inventor: Masatoshi Honma
  • Publication number: 20120070744
    Abstract: Disclosed is lithium titanate having excellent rate properties and useful for electricity storage devices, which is produced by preparing lithium titanate secondary particles that are aggregates of lithium titanate primary particles and forming at least macro-pores on the surfaces of the secondary particles. The lithium titanate can be produced by a process which comprises drying and granulating a slurry comprising crystalline titan oxide, a titanic acid compound and a lithium compound and firing the granulated product to thereby produce lithium titanate secondary particles, wherein (1) the crystalline titan oxide to be used comprises at least two types of crystalline titan oxide particles having different average particle diameters from each other, and/or (2) the crystalline titan oxide is used in an amount at least four-fold larger than that of the titanic acid compound in terms of TiO2 content by weight.
    Type: Application
    Filed: May 25, 2010
    Publication date: March 22, 2012
    Inventors: Nariaki Moriyama, Masatoshi Honma, Kazuyoshi Takeshima, Yusuke Okuda, Naoya Nagahashi
  • Patent number: 7834084
    Abstract: An object of the present invention is to provide: a light stabilizer emulsion composition which has good long-term storage stability and does not deteriorate various physical properties of a coating film to be formed even when the composition is added to an aqueous coating agent composition; and an aqueous coating agent composition containing the light stabilizer emulsion composition. The light stabilizer emulsion composition of the present invention is characterized by containing: an emulsifier having as a hydrophilic group a polyether chain obtained by a reaction between two or more kinds of alkyleneoxides and having as a hydrophobic group a hydrocarbon group having 1 to 30 carbon atoms; at least one of a light stabilizer and a UV absorber; and water. Further, the aqueous coating agent composition of the present invention is characterized by containing the light stabilizer emulsion composition.
    Type: Grant
    Filed: July 12, 2005
    Date of Patent: November 16, 2010
    Assignee: Adeka Corporation
    Inventors: Takayuki Tsuda, Masatoshi Honma, Koji Beppu
  • Patent number: 7828872
    Abstract: There is provided a process comprising mixing a divalent copper oxide with a reducing agent in the presence of a complexing agent and a protective colloid in a liquid medium to thereby produce copper microparticles without formation of a univalent copper oxide from the divalent copper oxide. Further, there is provided a process comprising reducing a divalent copper oxide in the presence of a complexing agent and a protective colloid, such as a protein, to thereby form metallic copper microparticles, adding a protective colloid scavenger, such as a protease, to thereby remove the protective colloid and effect agglomeration of metallic copper microparticles, and filtering the mixture by means of a pressure filter, a vacuum filter, a suction filter, etc.
    Type: Grant
    Filed: August 18, 2005
    Date of Patent: November 9, 2010
    Assignee: Ishihara Sangyo Kaisha, Ltd.
    Inventors: Masanori Tomonari, Masatoshi Honma, Yoshiyuki Kunifusa
  • Publication number: 20100243968
    Abstract: This invention provides a titanic acid compound-type electrode active material having a high battery capacity and, at the same time, having excellent cycle characteristics. The titanic acid compound exhibits an X-ray diffraction pattern corresponding to a bronze-type titanium dioxide except for a peak for a (003) face and a (?601) face and having a lattice spacing difference between the (003) face and the (?601) face, i.e., d(003)?d(?601), of not more than 0.0040 nm. The titanic acid compound may be produced by reacting a layered alkali metal titanate, represented by a compositional formula MxM?x/3Ti2-x/3O4 wherein M and M?, which may be the same or different, represent an alkali metal; and x is in the range of 0.50 to 1.0, with an acidic compound and then heating the reaction product at a temperature in the range of 250 to 450° C.
    Type: Application
    Filed: August 27, 2008
    Publication date: September 30, 2010
    Inventors: Hirofumi Taniguchi, Masatoshi Honma
  • Patent number: 7671096
    Abstract: The light stabilizer emulsion composition of the present invention includes: water; an emulsifier; and a light stabilizer and/or a UV absorber, in which components constituting the light stabilizer emulsion composition has an average particle size of 150 nm or less.
    Type: Grant
    Filed: February 10, 2006
    Date of Patent: March 2, 2010
    Assignee: Adeka Corporation
    Inventors: Masaki Hosaka, Masatoshi Honma, Yoshihide Kondo
  • Publication number: 20100046143
    Abstract: Disclosed is a storage device comprising a positive electrode material containing graphite; a negative electrode material containing an oxide of at least one metal element selected from Ti, Zr, V, Cr, Mo, Mn, Fe, Co, Ni, Cu, Zn, Sn, Sb, Bi, W and Ta, which may preferably contains a metal oxide containing at least Ti as a metal element; and an electrolyte solution. This storage device has high capacitance and high discharge voltage, thereby having high energy. Consequently, this storage device can have high energy density, while being excellent in cycle performances and rate performances.
    Type: Application
    Filed: October 19, 2007
    Publication date: February 25, 2010
    Inventors: Masaki Yoshio, Toshihiko Kawamura, Nariaki Moriyama, Masatoshi Honma, Tokuo Suita, Hirofumi Taniguchi, Tomoyuki Sotokawa
  • Publication number: 20090069482
    Abstract: Provided is an aqueous coating composition having excellent thixotropic properties, which contributes to obtain a coating having favorable water resistance and a coated film having favorable design properties. Specifically provided is an aqueous coating composition characterized by comprising a urethane compound represented by the following general formula (1) as component (A), a flake pigment as component (B), and a water-soluble resin other than component (A) as component (C): where R1 represents a residue obtained by removing hydroxy groups from an n-valent alcohol having 2 to 20 carbon atoms, R2 represents a hydrocarbon group which may have a urethane bond, R3 represents an alkyl group having 8 to 30 carbon atoms, R4 represents an alkylene group having 2 to 3 carbon atoms, k represents an integer of 1 to 500, and n and m each represent an integer of 2 to 10.
    Type: Application
    Filed: July 13, 2007
    Publication date: March 12, 2009
    Inventors: Takeaki Mizutari, Masatoshi Honma