Patents by Inventor Noriyuki Kiuchi

Noriyuki Kiuchi 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: 20230216052
    Abstract: A method for producing an artificial graphite material for a lithium ion secondary battery negative electrode, including at least a step of performing a coking treatment on a raw material oil composition by performing a delayed coking process to generate a raw coke composition, a step of performing a heat treatment on the raw coke composition to obtain a heat-treated raw coke composition, a step of crushing the heat-treated raw coke composition to obtain heat-treated raw coke powder, a step of graphitizing the heat-treated raw coke powder to obtain graphite powder, and a step of crushing the graphite powder, in which a volatile content of the heat-treated raw coke powder is less than 3.71%, and a true density of the heat-treated raw coke powder is greater than 1.22 g/cm3 and less than 1.73 g/cm3.
    Type: Application
    Filed: June 18, 2021
    Publication date: July 6, 2023
    Applicant: ENEOS CORPORATION
    Inventors: Takashi SUZUKI, Toshiyuki HIROKI, Zhen WANG, Keizo IKAI, Noriyuki KIUCHI, Takahiro SHIRAI
  • Publication number: 20220119264
    Abstract: Provided is a synthetic graphite material, in which a size L (112) of a crystallite in a c-axis direction as calculated from a (112) diffraction line obtained by an X-ray wide angle diffraction method is in a range of 4 to 30 nm, a surface area based on a volume as calculated by a laser diffraction type particle size distribution measuring device is in a range of 0.22 to 1.70 m2/cm3, an oil absorption is in a range of 67 to 147 mL/100 g, and a half width ?vG of a peak present in a wavelength range of 1580 cm?1±100 cm?1 is in a range of 19 to 24 cm?1 in Raman spectrum analysis using argon ion laser light having a wavelength of 514.5 nm.
    Type: Application
    Filed: January 14, 2020
    Publication date: April 21, 2022
    Applicant: ENEOS CORPORATION
    Inventors: Takashi SUZUKI, Takashi MAEDA, Mitsuo KARAKANE, Takahiro SHIRAI, Hiroshi KAWACHI, Noriyuki KIUCHI
  • Publication number: 20220093924
    Abstract: Provided is a synthetic graphite material, in which a size L (112) of a crystallite in a c-axis direction as calculated from a (112) diffraction line obtained by an X-ray wide angle diffraction method is in a range of 4 to 30 nm, a surface area based on a volume as calculated by a laser diffraction type particle size distribution measuring device is in a range of 0.22 to 1.70 m2/cm3, an oil absorption is in a range of 67 to 147 mL/100 g, and a nitrogen adsorption specific surface area is in a range of 3.1 to 8.2 m2/g.
    Type: Application
    Filed: January 14, 2020
    Publication date: March 24, 2022
    Applicant: ENEOS CORPORATION
    Inventors: Takashi SUZUKI, Takashi MAEDA, Mitsuo KARAKANE, Takahiro SHIRAI, Hiroshi KAWACHI, Noriyuki KIUCHI
  • Publication number: 20220073355
    Abstract: A synthetic graphite material, in which a size L (112) of a crystallite in a c-axis direction as calculated from a (112) diffraction line obtained by an X-ray wide angle diffraction method is in a range of 4 to 30 nm, a surface area based on a volume as calculated by a laser diffraction type particle size distribution measuring device is in a range of 0.22 to 1.70 m2/cm3, an oil absorption is in a range of 67 to 147 mL/100 g, a spectrum derived from carbon appearing in an electron spin resonance method as measured using an X band is in a range of 3200 to 3410 gauss, and ?Hpp, which is a line width of the spectrum as calculated from a first derivative spectrum of the spectrum at a temperature of 4.8K, is in a range of 41 to 69 gauss.
    Type: Application
    Filed: January 14, 2020
    Publication date: March 10, 2022
    Applicant: ENEOS CORPORATION
    Inventors: Takashi SUZUKI, Takashi MAEDA, Mitsuo KARAKANE, Takahiro SHIRAI, Hiroshi KAWACHI, Noriyuki KIUCHI
  • Patent number: 8993478
    Abstract: The present invention provides a method for producing an activated carbon for an electric double layer capacitor, with which the wettability of a carbon material with an alkali activator is improved, thereby improving contact efficiency between the carbon material and the alkali activator and efficiently promoting reaction between the carbon material, which is a starting material and the activator. The method comprises adjusting a carbon material as it is or after having been calcined to produce a carbon powder having an average particle diameter of 0.5 to 15 ?m, oxidizing the carbon powder to contain 3 percent by mass or more of oxygen, and activating the oxidized product with an alkali activator.
    Type: Grant
    Filed: December 24, 2010
    Date of Patent: March 31, 2015
    Assignee: JX Nippon Oil & Energy Corporation
    Inventors: Masaki Fujii, Noriyuki Kiuchi, Shinya Taguchi, Keizo Ikai
  • Patent number: 8858654
    Abstract: Provided is a method for producing an activated carbon for an electric double layer capacitor electrode comprising adjusting a carbon material (including a calcined product of a carbon material) in particle size, followed by mixing the carbon material with an alkali activator, and then activating the mixture, wherein the mixing is carried out so that the particle size distribution composed of particles with a size of 300 ?m or greater in the mixture of the carbon material and alkali activator is 5 percent or less so that the mixing state of the carbon material and alkali activator can be improved, resulting in a reduction in the ratio of the alkali activator.
    Type: Grant
    Filed: March 11, 2011
    Date of Patent: October 14, 2014
    Assignee: JX Nippon Oil & Energy Corporation
    Inventors: Masaki Fujii, Keizo Ikai, Noriyuki Kiuchi, Kunihiko Satou, Shinya Taguchi
  • Publication number: 20130027845
    Abstract: Provided is a method for producing an activated carbon for an electric double layer capacitor electrode comprising adjusting a carbon material (including a calcined product of a carbon material) in particle size, followed by mixing the carbon material with an alkali activator, and then activating the mixture, wherein the mixing is carried out so that the particle size distribution composed of particles with a size of 300 ?m or greater in the mixture of the carbon material and alkali activator is 5 percent or less so that the mixing state of the carbon material and alkali activator can be improved, resulting in a reduction in the ratio of the alkali activator.
    Type: Application
    Filed: March 11, 2011
    Publication date: January 31, 2013
    Applicant: JX NIPPON OIL & ENERGY CORPORATION
    Inventors: Masaki Fujii, Keizo Ikai, Noriyuki Kiuchi, Kunihiko Satou, Shinya Taguchi
  • Publication number: 20120275988
    Abstract: The present invention provides a method for producing an activated carbon for an electric double layer capacitor, with which the wettability of a carbon material with an alkali activator is improved, thereby improving contact efficiency between the carbon material and the alkali activator and efficiently promoting reaction between the carbon material, which is a starting material and the activator. The method comprises adjusting a carbon material as it is or after having been calcined to produce a carbon powder having an average particle diameter of 0.5 to 15 ?m, oxidizing the carbon powder to contain 3 percent by mass or more of oxygen, and activating the oxidized product with an alkali activator.
    Type: Application
    Filed: December 24, 2010
    Publication date: November 1, 2012
    Applicant: JX NIPPON OIL & ENERGY CORPORATION
    Inventors: Masaki Fujii, Noriyuki Kiuchi, Shinya Taguchi, Keizo Ikai
  • Patent number: 8284540
    Abstract: The present invention provides a process of producing an activated carbon for an electric double layer capacitor, which can produce easily and inexpensively an activated carbon free from fusing of carbon particles during activation and having a small diameter, a uniform particle diameter, and a relatively large specific surface area on a commercial scale. The process comprises the steps of calcining an easily graphitizable carbon material so that the reduction rates of the hydrogen/carbon atomic ratio (H/C) and the volatile components in the carbon material are 4 percent or more and 5 percent or more, respectively after calcination and activating the carbon material thereby producing an activated carbon for an electric double layer capacitor, having an average particle diameter of 0.5 to 7 ?m and a BET specific surface area of 1500 to 3000 m2/g.
    Type: Grant
    Filed: July 3, 2008
    Date of Patent: October 9, 2012
    Assignee: Nippon Oil Corporation
    Inventors: Masaki Fujii, Shinya Taguchi, Keizo Ikai, Hiroshi Kato, Kazuhiro Igarashi, Noriyuki Kiuchi, Tsutomu Nakamura, Kiwamu Takeshita
  • Publication number: 20120050948
    Abstract: The present invention provides a method for producing a carbon material for an electric double layer capacitor, having a low internal resistance and a high capacitance per unit volume. The method comprises activating a graphitizable carbon material used as the raw material with 3 or more alkali metal compounds to produce an activated carbon having a BET specific surface area of 1500 to 3000 m2/g and a pore diameter corresponding to the maximum value in the pore size distribution as determined by the MP method within the range of 1 to 2 nm.
    Type: Application
    Filed: March 11, 2010
    Publication date: March 1, 2012
    Applicant: JX NIPPON OIL & ENERGY CORPORATION
    Inventors: Masaki Fujii, Noriyuki Kiuchi, Yutaka Sanokawa, Shinya Taguchi, Keizou Ikai
  • Publication number: 20100214722
    Abstract: The present invention provides a process of producing an activated carbon for an electric double layer capacitor, which can produce easily and inexpensively an activated carbon free from fusing of carbon particles during activation and having a small diameter, a uniform particle diameter, and a relatively large specific surface area on a commercial scale. The process comprises the steps of calcining an easily graphitizable carbon material so that the reduction rates of the hydrogen/carbon atomic ratio (H/C) and the volatile components in the carbon material are 4 percent or more and 5 percent or more, respectively after calcination and activating the carbon material thereby producing an activated carbon for an electric double layer capacitor, having an average particle diameter of 0.5 to 7 ?m and a BET specific surface area of 1500 to 3000 m2/g.
    Type: Application
    Filed: July 3, 2008
    Publication date: August 26, 2010
    Applicant: NIPPON OIL CORPORATION
    Inventors: Masaki Fujii, Shinya Taguchi, Keizo Ikai, Hiroshi Kato, Kazuhiro Igarashi, Noriyuki Kiuchi, Tsutomu Nakamura, Kiwamu Takeshita
  • Patent number: 5587203
    Abstract: A method for preparing a carbon/carbon composite material which is characterized in that a carbon preform is impregnated with a carbonaceous pitch exhibiting a densification parameter of 0.1 or more, said densification parameter being represented by the following formula (1), and then subjected to an isotactic compression at a pressure higher than the atmospheric pressure but not higher than 10 Kgf/cm.sup.2 and at a sintering temperature of 250.degree. to 3,000.degree. C., thereby densifying the carbon preform:Densification parameter={(Weight of a sintered carbonaceous pitch (hereinafter, referred to simply as a sintered product) to be obtained through a process where a carbonaceous pitch in an open-type container is heated from room temperature up to 1000.degree. C. at a rate of 2.degree. C./min., and then sintered for 2 hours at 1000.degree. C. under isotactic compression of 9.5 Kgf/cm.sup.2)}/(Weight of a carbonaceous pitch before being sintered).times.
    Type: Grant
    Filed: August 29, 1995
    Date of Patent: December 24, 1996
    Assignee: Nippon Oil Co.
    Inventors: Yoshio Soda, Takefumi Kohno, Masaaki Shinagawa, Noriyuki Kiuchi