Patents by Inventor Syun GOHDA

Syun GOHDA 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: 12162768
    Abstract: A method of producing a carbon material-containing material having a precisely controlled structure under a mild condition, a carbon material-containing material covalently bonded to an inorganic matter, and an intermediate material which is useful for, for example, industrially producing carbon-coated inorganic particles, hollow carbon fine particles, and can be industrially produced under a mild condition, are provided. The method of producing a carbon material-containing material includes heating a composition containing a compound (A), which causes a condensation reaction between the same and/or different molecules, and an inorganic matter. When the compound (A) has a condensation reaction temperature of T° C., a heating temperature is (T-150)° C. or more. The carbon material-containing material includes a carbon material and an inorganic matter. At least part of the carbon material and inorganic matter are covalently bonded.
    Type: Grant
    Filed: September 13, 2019
    Date of Patent: December 10, 2024
    Assignee: NIPPON SHOKUBAI CO., LTD.
    Inventors: Yasuhiro Yamada, Masatoshi Murata, Makoto Saito, Satoshi Sato, Syun Gohda, Hironobu Ono
  • Patent number: 11945723
    Abstract: Provided is a method of simply producing high-quality graphite oxide. The present invention relates to a method of producing a carbon material composite containing graphite oxide and at least one surfactant selected from the group consisting of a nonionic surfactant, a cationic surfactant, and an amphoteric surfactant, the method including: oxidizing graphite; mixing an aqueous dispersion obtained through the oxidizing, the aqueous dispersion containing graphite oxide dispersed therein, and the at least one surfactant selected from the group consisting of a nonionic surfactant, a cationic surfactant, and an amphoteric surfactant; and purifying the carbon material composite.
    Type: Grant
    Filed: April 24, 2019
    Date of Patent: April 2, 2024
    Assignee: Nippon Shokubai Co., Ltd.
    Inventors: Syun Gohda, Tatsuya Yamaguchi, Hironobu Ono, Osamu Konosu
  • Patent number: 11286166
    Abstract: The present invention provides a safe and highly efficient method for producing graphite oxide. The present invention relates to a method for producing graphite oxide by oxidizing graphite, the method including the step of oxidizing graphite by adding a permanganate to a liquid mixture containing graphite and sulfuric acid while maintaining the concentration of heptavalent manganese at 1% by mass or less in 100% by mass of the liquid mixture.
    Type: Grant
    Filed: November 8, 2016
    Date of Patent: March 29, 2022
    Assignee: Nippon Shokubai Co., Ltd.
    Inventors: Hironobu Ono, Osamu Konosu, Shin-ichi Okuoka, Syun Gohda, Shusuke Kamata, Yuichi Sato, Yuta Nishina
  • Publication number: 20220055907
    Abstract: A method of producing a carbon material-containing material having a precisely controlled structure under a mild condition, a carbon material-containing material covalently bonded to an inorganic matter, and an intermediate material which is useful for, for example, industrially producing carbon-coated inorganic particles, hollow carbon fine particles, and can be industrially produced under a mild condition, are provided. The method of producing a carbon material-containing material includes heating a composition containing a compound (A), which causes a condensation reaction between the same and/or different molecules, and an inorganic matter. When the compound (A) has a condensation reaction temperature of T° C., a heating temperature is (T?150)° C. or more. The carbon material-containing material includes a carbon material and an inorganic matter. At least part of the carbon material and inorganic matter are covalently bonded.
    Type: Application
    Filed: September 13, 2019
    Publication date: February 24, 2022
    Applicant: NIPPON SHOKUBAI CO., LTD.
    Inventors: Yasuhiro Yamada, Masatoshi Murata, Makoto Saito, Satoshi Sato, Syun Gohda, Hironobu Ono
  • Patent number: 11183645
    Abstract: An organic thin film that imparts an excellent electron injection property when it is used as an electron injection layer of an organic EL device and a method for producing the organic thin film are provided. An organic thin film at least includes: a first material which is an organic material having an acid dissociation constant pKa of 1 or greater; and a second material which transports an electron. The first material is at least one selected from the group consisting of tertiary amines, phosphazene compounds, guanidine compounds, heterocyclic compounds containing an amidine structure, hydrocarbon compounds having a ring structure, and ketone compounds.
    Type: Grant
    Filed: March 17, 2016
    Date of Patent: November 23, 2021
    Assignees: Nippon Hoso Kyokai, Nippon Shokubai Co., Ltd.
    Inventors: Hirohiko Fukagawa, Takahisa Shimizu, Katsuyuki Morii, Munehiro Hasegawa, Syun Gohda
  • Publication number: 20210238041
    Abstract: Provided is a method of simply producing high-quality graphite oxide. The present invention relates to a method of producing a carbon material composite containing graphite oxide and at least one surfactant selected from the group consisting of a nonionic surfactant, a cationic surfactant, and an amphoteric surfactant, the method including: oxidizing graphite; mixing an aqueous dispersion obtained through the oxidizing, the aqueous dispersion containing graphite oxide dispersed therein, and the at least one surfactant selected from the group consisting of a nonionic surfactant, a cationic surfactant, and an amphoteric surfactant; and purifying the carbon material composite.
    Type: Application
    Filed: April 24, 2019
    Publication date: August 5, 2021
    Inventors: Syun GOHDA, Tatsuya YAMAGUCHI, Hironobu ONO, Osamu KONOSU
  • Patent number: 10766774
    Abstract: Provided are a method for producing a graphite oxide derivative capable of simply producing a high-quality graphite oxide derivative, and a high-quality graphite oxide derivative. The present invention relates to a method for producing a graphite oxide derivative, the method including the steps of oxidizing graphite; and preparing a graphite oxide derivative by reacting graphite oxide in a reaction liquid containing graphite oxide obtained in the oxidation step or graphite oxide in a graphite oxide-containing composition that is separated from the reaction liquid with a compound reactive with an oxygen-containing functional group of the graphite oxide, the method not including the step of purifying and drying the graphite oxide-containing reaction liquid between the oxidation step and the graphite oxide derivative preparation step.
    Type: Grant
    Filed: November 8, 2016
    Date of Patent: September 8, 2020
    Assignee: NIPPON SHOKUBAI CO., LTD.
    Inventors: Syun Gohda, Hironobu Ono, Osamu Konosu, Shin-ichi Okuoka
  • Publication number: 20190081239
    Abstract: The present invention aims to provide an organic thin film that imparts an excellent electron injection property when it is used as an electron injection layer of an organic EL device, and a method for producing the organic thin film. The present invention relates to an organic thin film at least including: a first material which is an organic material having an acid dissociation constant pKa of 1 or greater; and a second material which transports an electron, the first material being one or two or more selected from the group consisting of tertiary amines, phosphazene compounds, guanidine compounds, heterocyclic compounds containing an amidine structure, hydrocarbon compounds having a ring structure, and ketone compounds.
    Type: Application
    Filed: March 17, 2016
    Publication date: March 14, 2019
    Inventors: Hirohiko FUKAGAWA, Takahisa SHIMIZU, Katsuyuki MORII, Munehiro HASEGAWA, Syun GOHDA
  • Publication number: 20180327269
    Abstract: Provided are a method for producing a graphite oxide derivative capable of simply producing a high-quality graphite oxide derivative, and a high-quality graphite oxide derivative. The present invention relates to a method for producing a graphite oxide derivative, the method including the steps of oxidizing graphite; and preparing a graphite oxide derivative by reacting graphite oxide in a reaction liquid containing graphite oxide obtained in the oxidation step or graphite oxide in a graphite oxide-containing composition that is separated from the reaction liquid with a compound reactive with an oxygen-containing functional group of the graphite oxide, the method not including the step of purifying and drying the graphite oxide-containing reaction liquid between the oxidation step and the graphite oxide derivative preparation step.
    Type: Application
    Filed: November 8, 2016
    Publication date: November 15, 2018
    Inventors: Syun GOHDA, Hironobu ONO, Osamu KONOSU, Shin-ichi OKUOKA
  • Publication number: 20180319668
    Abstract: The present invention provides a safe and highly efficient method for producing graphite oxide. The present invention relates to a method for producing graphite oxide by oxidizing graphite, the method including the step of oxidizing graphite by adding a permanganate to a liquid mixture containing graphite and sulfuric acid while maintaining the concentration of heptavalent manganese at 1% by mass or less in 100% by mass of the liquid mixture.
    Type: Application
    Filed: November 8, 2016
    Publication date: November 8, 2018
    Inventors: Hironobu ONO, Osamu KONOSU, Shin-ichi OKUOKA, Syun GOHDA, Shusuke KAMATA, Yuichi SATO, Yuta NISHINA