Patents by Inventor Saori HIROKAWA

Saori HIROKAWA 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).

  • Molded catalyst for use in manufacture of methyl methacrylate, and method for manufacture of methyl methacrylate using same
    Patent number: 10131615
    Abstract: The present invention provides a molded catalyst for use in the manufacture of methyl methacrylate, for manufacturing methyl methacrylate from a starting material of methyl ?-hydroxyisobutyrate by a vapor phase contact reaction, wherein the molded catalyst for use in the manufacture of methyl methacrylate is characterized in that the molded catalyst includes a synthetic faujasite type zeolite, a lamellar aluminum silicate compound, and a synthetic lamellar magnesium silicate compound, the weight ratio of the lamellar aluminum silicate compound and the synthetic lamellar magnesium silicate compound being 1:5 to 6:1.
    Type: Grant
    Filed: April 8, 2015
    Date of Patent: November 20, 2018
    Assignee: MITSUBISHI GAS CHEMICAL COMPANY, INC.
    Inventors: Saori Hirokawa, Katsumi Higuchi, Yuuichi Sugano
  • Catalyst for use in production of methyl methacrylate, and method for producing methyl methacrylate
    Patent number: 9630904
    Abstract: According to the present invention, a molded catalyst for use in the production of methyl methacrylate can be provided. The molded catalyst comprises synthetic faujasite-type zeolite and a layered magnesium silicate compound, wherein the sulfur content in the layered magnesium silicate compound is 0.10% by weight or less. According to the present invention, a method for producing methyl methacrylate can also be provided. The method is characterized by comprising a step of carrying out a gas-phase catalytic reaction of methyl ?-hydroxyisobutyrate using the above-mentioned molded catalyst for use in the production of methyl methacrylate.
    Type: Grant
    Filed: December 22, 2014
    Date of Patent: April 25, 2017
    Assignee: MITSUBISHI GAS CHEMICAL COMPANY, INC.
    Inventors: Katsumi Higuchi, Saori Hirokawa, Yuuichi Sugano
  • MOLDED CATALYST FOR USE IN MANUFACTURE OF METHYL METHACRYLATE, AND METHOD FOR MANUFACTURE OF METHYL METHACRYLATE USING SAME
    Publication number: 20170015615
    Abstract: The present invention provides a molded catalyst for use in the manufacture of methyl methacrylate, for manufacturing methyl methacrylate from a starting material of methyl ?-hydroxyisobutyrate by a vapor phase contact reaction, wherein the molded catalyst for use in the manufacture of methyl methacrylate is characterized in that the molded catalyst includes a synthetic faujasite type zeolite, a lamellar aluminum silicate compound, and a synthetic lamellar magnesium silicate compound, the weight ratio of the lamellar aluminum silicate compound and the synthetic lamellar magnesium silicate compound being 1:5 to 6:1.
    Type: Application
    Filed: April 8, 2015
    Publication date: January 19, 2017
    Applicant: MITSUBISHI GAS CHEMICAL COMPANY, INC.
    Inventors: Saori HIROKAWA, Katsumi HIGUCHI, Yuuichi SUGANO
  • CATALYST FOR USE IN PRODUCTION OF METHYL METHACRYLATE, AND METHOD FOR PRODUCING METHYL METHACRYLATE
    Publication number: 20160368851
    Abstract: According to the present invention, a molded catalyst for use in the production of methyl methacrylate can be provided. The molded catalyst comprises synthetic faujasite-type zeolite and a layered magnesium silicate compound, wherein the sulfur content in the layered magnesium silicate compound is 0.10% by weight or less. According to the present invention, a method for producing methyl methacrylate can also be provided. The method is characterized by comprising a step of carrying out a gas-phase catalytic reaction of methyl ?-hydroxyisobutyrate using the above-mentioned molded catalyst for use in the production of methyl methacrylate.
    Type: Application
    Filed: December 22, 2014
    Publication date: December 22, 2016
    Applicant: MITSUBISHI GAS CHEMICAL COMPANY, INC.
    Inventors: Katsumi HIGUCHI, Saori HIROKAWA, Yuuichi SUGANO