Patents by Inventor Mika Tsuboi

Mika Tsuboi 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).

  • Porous material, cell structure, and method of producing porous material
    Patent number: 11731911
    Abstract: A porous material includes aggregate particles and a binding material. In the aggregate particles, oxide films containing cristobalite are provided on surfaces of particle bodies that are silicon carbide particles or silicon nitride particles. The binding material binds the aggregate particles together in a state where pores are provided therein. The porous material contains at least one of copper, calcium, and nickel as an ancillary component.
    Type: Grant
    Filed: March 19, 2019
    Date of Patent: August 22, 2023
    Assignee: NGK INSULATORS, LTD.
    Inventors: Mika Tsuboi, Yunie Izumi, Takahiro Tomita
  • Porous material, honeycomb structure, and method of producing porous material
    Patent number: 11428138
    Abstract: A porous material includes an aggregate in which oxide films are formed on surfaces of particle bodies, and a binding material that contains cordierite and binds the aggregate together in a state where pores are formed. The binding material or the oxide films contain a rare-earth component that excludes Ce.
    Type: Grant
    Filed: October 12, 2017
    Date of Patent: August 30, 2022
    Assignee: NGK Insulators, Ltd.
    Inventors: Yunie Izumi, Takahiro Tomita, Mika Tsuboi
  • Porous material, cell structure, and method of producing porous material
    Patent number: 11214521
    Abstract: A porous material includes aggregate particles and a binding material. In the aggregate particles, oxide films containing cristobalite are provided on surfaces of particle bodies that are silicon carbide particles or silicon nitride particles. The binding material contains cordierite and binds the aggregate particles together in a state where pores are provided therein. The mass ratio of the cordierite to the whole of the porous material is in the range of 10 to 40 mass %. The oxide films that exist between the particle bodies and the binding material have a thickness less than or equal to 0.90 ?m.
    Type: Grant
    Filed: March 19, 2019
    Date of Patent: January 4, 2022
    Assignee: NGK Insulators, Ltd.
    Inventors: Mika Tsuboi, Yunie Izumi, Takahiro Tomita
  • Porous material, honeycomb structure, and method of producing porous material
    Patent number: 10557393
    Abstract: A porous material includes aggregate particles, and a binding material that contains cordierite and zircon particles and binds the aggregate particles together in a state where pores are formed.
    Type: Grant
    Filed: October 12, 2017
    Date of Patent: February 11, 2020
    Assignee: NGK Insulators, Ltd.
    Inventors: Mika Tsuboi, Yunie Izumi, Takahiro Tomita
  • POROUS MATERIAL, CELL STRUCTURE, AND METHOD OF PRODUCING POROUS MATERIAL
    Publication number: 20190292108
    Abstract: A porous material includes aggregate particles and a binding material. In the aggregate particles, oxide films containing cristobalite are provided on surfaces of particle bodies that are silicon carbide particles or silicon nitride particles. The binding material binds the aggregate particles together in a state where pores are provided therein. The porous material contains at least one of copper, calcium, and nickel as an ancillary component.
    Type: Application
    Filed: March 19, 2019
    Publication date: September 26, 2019
    Applicant: NGK INSULATORS, LTD.
    Inventors: Mika TSUBOI, Yunie Izumi, Takahiro Tomita
  • POROUS MATERIAL, CELL STRUCTURE, AND METHOD OF PRODUCING POROUS MATERIAL
    Publication number: 20190292104
    Abstract: A porous material includes aggregate particles and a binding material. In the aggregate particles, oxide films containing cristobalite are provided on surfaces of particle bodies that are silicon carbide particles or silicon nitride particles. The binding material contains cordierite and binds the aggregate particles together in a state where pores are provided therein. The mass ratio of the cordierite to the whole of the porous material is in the range of 10 to 40 mass %. The oxide films that exist between the particle bodies and the binding material have a thickness less than or equal to 0.90 ?m.
    Type: Application
    Filed: March 19, 2019
    Publication date: September 26, 2019
    Applicant: NGK INSULATORS, LTD.
    Inventors: Mika Tsuboi, Yunie Izumi, Takahiro Tomita
  • POROUS MATERIAL, HONEYCOMB STRUCTURE, AND METHOD OF PRODUCING POROUS MATERIAL
    Publication number: 20180112575
    Abstract: A porous material includes aggregate particles, and a binding material that contains cordierite and zircon particles and binds the aggregate particles together in a state where pores are formed.
    Type: Application
    Filed: October 12, 2017
    Publication date: April 26, 2018
    Applicant: NGK Insulators, Ltd.
    Inventors: Mika Tsuboi, Yunie Izumi, Takahiro Tomita
  • POROUS MATERIAL, HONEYCOMB STRUCTURE, AND METHOD OF PRODUCING POROUS MATERIAL
    Publication number: 20180112577
    Abstract: A porous material includes an aggregate in which oxide films are formed on surfaces of particle bodies, and a binding material that contains cordierite and binds the aggregate together in a state where pores are formed. The binding material or the oxide films contain a rare-earth component that excludes Ce.
    Type: Application
    Filed: October 12, 2017
    Publication date: April 26, 2018
    Applicant: NGK Insulations, Ltd.
    Inventors: Yunie IZUMI, Takahiro Tomita, Mika Tsuboi