Patents by Inventor Naoto Tsujiuchi

Naoto Tsujiuchi 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: 20240261818
    Abstract: A method of manufacturing a metal compound film is a method of manufacturing a metal compound film in which a compound generating liquid containing, as a solute component, a substance that generates a metal compound is applied to a substrate having an opening portion on a surface and sintered to form a metal compound film, including: a pre-wet liquid application step of applying a pre-wet liquid to the surface of the substrate, and filling the opening portion with the pre-wet liquid, the pre-wet liquid having better wettability to the substrate than the compound generating liquid; a compound generating liquid application step of applying the compound generating liquid to stack the compound generating liquid on the pre-wet liquid on the substrate, and diffusing the solute component of the compound generating liquid in the pre-wet liquid; and a sintering step of sintering the applied compound generating liquid to form metal compound film.
    Type: Application
    Filed: May 27, 2022
    Publication date: August 8, 2024
    Applicant: MITSUBISHI MATERIALS CORPORATION
    Inventors: Naoto Tsujiuchi, Nobuyuki Soyama
  • Publication number: 20240246054
    Abstract: A hafnium compound-containing sol-gel solution contains a lower alcohol having 5 or less carbon atoms that serves as a solvent, a hafnium compound that serves as a hafnium source, and a polyalcohol having either or both of an ether group and a N atom in a molecule, as a wettability improver. The hafnium compound-containing sol-gel solution preferably further contains a stabilizer. It is preferable that the content of the hafnium compound is regulated within a range of 0.05 mass % or more and 10 mass % or less, and the content of the polyalcohol is regulated within a range of 0.05 mass % or more and 20 mass % or less.
    Type: Application
    Filed: August 30, 2022
    Publication date: July 25, 2024
    Applicant: MITSUBISHI MATERIALS CORPORATION
    Inventors: Naoto Tsujiuchi, Koji Tatsumi
  • Publication number: 20230313381
    Abstract: The plasma-resistant coating film according to the present invention is formed on a substrate, including crystalline Y2O3 particles having an average particle diameter of 0.5 ?m to 5.0 ?m in a SiO2 film, in which a film density of the plasma-resistant coating film is 90% or more, the film density being obtained by performing image analysis of a cross section of the film with an electron scanning microscope and by using the following expression (1), a size of pores in the film is 5 ?m or less in terms of diameter, and a peeling rate of the film from the substrate measured by performing a cross-cut test is 5% or less. Film density (%)=[(S1?S2)/S1]×100 (1). However, in the expression (1), S1 is an area of the film and S2 is an area of a pore portion in the film.
    Type: Application
    Filed: September 8, 2021
    Publication date: October 5, 2023
    Applicant: MITSUBISHI MATERIALS CORPORATION
    Inventors: Naoto Tsujiuchi, Koji Tatsumi, Ichiro Shiono
  • Publication number: 20220254987
    Abstract: A piezoelectric film contains iron-containing potassium sodium niobate represented by General Formula (1) and granular crystal particles having an average aspect ratio of 3 or less. (KxNa1-x)a(FeyNbz)O3??(1) In Formula (1), x represents a number satisfying 0<x<1, a represents a number satisfying 0.90<a?1, and y and z represent numbers satisfying y+z=1 and 0.006?y/z?0.04.
    Type: Application
    Filed: July 8, 2020
    Publication date: August 11, 2022
    Applicant: MITSUBISHI MATERIALS CORPORATION
    Inventors: Naoto Tsujiuchi, Nobuyuki Soyama
  • Publication number: 20210188657
    Abstract: This liquid composition for forming a KNN film includes an organic metal compound including an organic potassium compound, an organic sodium compound, and an organic niobium compound, and a solvent. In this liquid composition for forming a KNN film, the organic potassium compound and the sodium compound are each metal salts of a carboxylic acid represented by General Formula CnH2n+1COOH (here, 4?n?8), the organic niobium compound is a niobium alkoxide or a metal salt of a carboxylic acid represented by General Formula CnH2n+1COOH (here, 4?n?8), and a main solvent is a carboxylic acid represented by General Formula CnH2n+1COOH (here, 4?n?8) and is included in an amount of 50% by mass to 90% by mass with respect to 100% by mass of the liquid composition for forming a KNN film.
    Type: Application
    Filed: June 7, 2019
    Publication date: June 24, 2021
    Applicant: MITSUBISHI MATERIALS CORPORATION
    Inventors: Naoto Tsujiuchi, Toshihiro Doi, Nobuyuki Soyama