Patents by Inventor Emi OTA

Emi OTA 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).

  • Epoxy resin curing agent, epoxy resin composition, and use of amine composition
    Patent number: 11976161
    Abstract: Provided are an epoxy resin curing agent containing an amine composition or a modified product thereof, wherein the amine composition contains bis(aminomethyl)cyclohexane (A) and a compound (B) represented by the following formula (1), and wherein the content of the component (B) based on 100 parts by mass of the component (A) is from 0.01 to 2.0 parts by mass, an epoxy resin composition, and use of an amine composition for an epoxy resin curing agent, wherein R1 represents an alkyl group having 1 to 6 carbon atoms, and p is a number of 1 to 3.
    Type: Grant
    Filed: August 19, 2021
    Date of Patent: May 7, 2024
    Assignee: MITSUBISHI GAS CHEMICAL COMPANY, INC.
    Inventors: Kazuki Kouno, Kousuke Ikeuchi, Yuma Ohno, Emi Ota, Aoi Yokoo
  • Epoxy resin curing agent, epoxy resin composition, and use of amine composition
    Patent number: 11945906
    Abstract: Provided are an epoxy resin curing agent containing an amine composition or a modified product thereof, wherein the amine composition contains bis(aminomethyl)cyclohexane (A), a compound (B) represented by the specific formula (1), and a compound (C) represented by the specific formula (2), and wherein a mass ratio of the component (B) to the component (C) [(B)/(C)] is from 0.01 to 5.0, an epoxy resin composition, and use of an amine composition for an epoxy resin curing agent.
    Type: Grant
    Filed: August 19, 2021
    Date of Patent: April 2, 2024
    Assignee: MITSUBISHI GAS CHEMICAL COMPANY, INC.
    Inventors: Kousuke Ikeuchi, Kazuki Kouno, Yuma Ohno, Emi Ota, Aoi Yokoo
  • Epoxy resin curing agent, epoxy resin composition, and use of amine composition
    Patent number: 11939420
    Abstract: Provided are an epoxy resin curing agent containing an amine composition or a modified product thereof, wherein the amine composition contains bis(aminomethyl)cyclohexane (A) and a compound (B) represented by the following formula (1), and wherein the content of the component (B) based on 100 parts by mass of the component (A) is from 1.5 to 20.0 parts by mass, an epoxy resin composition, and an epoxy resin curing agent for an amine composition. In the formula (1), R1 is an alkyl group having 1 to 6 carbon atoms optionally having a hydroxy group, R2NHCH2—, where R2 represents an alkyl group having 1 to 6 carbon atoms, or a group represented by the following formula (1A), and p is a number of 0 to 2. In the formula (1A), R3 represents a hydrogen atom or NH2—.
    Type: Grant
    Filed: August 19, 2021
    Date of Patent: March 26, 2024
    Assignee: MITSUBISHI GAS CHEMICAL COMPANY, INC.
    Inventors: Yuma Ohno, Kazuki Kouno, Kousuke Ikeuchi, Emi Ota, Aoi Yokoo
  • EPOXY RESIN CURING AGENT, EPOXY RESIN COMPOSITION, AND USE OF AMINE COMPOSITION
    Publication number: 20230383049
    Abstract: Provided are an epoxy resin curing agent containing an amine composition or a modified product thereof, wherein the amine composition contains bis(aminomethyl)cyclohexane (A) and a compound (B) represented by the following formula (1), and wherein the content of the component (B) based on 100 parts by mass of the component (A) is from 0.01 to 2.0 parts by mass, an epoxy resin composition, and use of an amine composition for an epoxy resin curing agent, wherein R1 represents an alkyl group having 1 to 6 carbon atoms, and p is a number of 1 to 3.
    Type: Application
    Filed: August 19, 2021
    Publication date: November 30, 2023
    Applicant: MITSUBISHI GAS CHEMICAL COMPANY, INC.
    Inventors: Kazuki KOUNO, Kousuke IKEUCHI, Yuma OHNO, Emi OTA, Aoi YOKOO
  • EPOXY RESIN CURING AGENT, EPOXY RESIN COMPOSITION, AND USE OF AMINE COMPOSITION
    Publication number: 20230323017
    Abstract: Provided are an epoxy resin curing agent containing an amine composition or a modified product thereof, wherein the amine composition contains bis(aminomethyl)cyclohexane (A) and a compound (B) represented by the following formula (1), and wherein the content of the component (B) based on 100 parts by mass of the component (A) is from 1.5 to 20.0 parts by mass, an epoxy resin composition, and an epoxy resin curing agent for an amine composition. In the formula (1), R1 is an alkyl group having 1 to 6 carbon atoms optionally having a hydroxy group, R2NHCH2—, where R2 represents an alkyl group having 1 to 6 carbon atoms, or a group represented by the following formula (1A), and p is a number of 0 to 2. In the formula (1A), R3 represents a hydrogen atom or NH2—.
    Type: Application
    Filed: August 19, 2021
    Publication date: October 12, 2023
    Applicant: MITSUBISHI GAS CHEMICAL COMPANY, INC.
    Inventors: Yuma OHNO, Kazuki KOUNO, Kousuke IKEUCHI, Emi OTA, Aoi YOKOO
  • EPOXY RESIN CURING AGENT, EPOXY RESIN COMPOSITION, AND USE OF AMINE COMPOSITION
    Publication number: 20230323018
    Abstract: Provided are an epoxy resin curing agent containing an amine composition or a modified product thereof, wherein the amine composition contains bis(aminomethyl)cyclohexane (A), a compound (B) represented by the specific formula (1), and a compound (C) represented by the specific formula (2), and wherein a mass ratio of the component (B) to the component (C) [(B)/(C)] is from 0.01 to 5.0, an epoxy resin composition, and use of an amine composition for an epoxy resin curing agent.
    Type: Application
    Filed: August 19, 2021
    Publication date: October 12, 2023
    Applicant: MITSUBISHI GAS CHEMICAL COMPANY, INC.
    Inventors: Kousuke IKEUCHI, Kazuki KOUNO, Yuma OHNO, Emi OTA, Aoi YOKOO