Patents by Inventor Tomoshi KUMAZAWA

Tomoshi KUMAZAWA 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: 11674043
    Abstract: The present invention provides a red paint for ceramic decoration, including a glass matrix, and a red colorant and a protective material that are intermingled in the glass matrix. The red colorant contains gold nanoparticles and silver nanoparticles. The protective material contains silica nanoparticles.
    Type: Grant
    Filed: August 26, 2021
    Date of Patent: June 13, 2023
    Assignee: NORITAKE CO., LIMI TED
    Inventors: Hiromichi Hayashi, Jun Shiota, Tomoshi Kumazawa
  • Publication number: 20230167321
    Abstract: An inkjet ink for a glass substrate can enable formation of an aesthetic image with high concealability on the surface of the glass substrate. The inkjet ink disclosed here can include: an inorganic solid including an inorganic pigment that develops black and a glass frit; a monomer component having a photocuring property; and a photoinitiator. In the inkjet ink, a volume ratio of the inorganic solid in a case where an ink total volume is 100 volume% can be 35 volume% or less, a volume ratio of the inorganic pigment in the case where a total volume of the inorganic solid is 100 volume% can be 15 volume% or more and less than 90 volume%, and a volume ratio of the inorganic pigment to the photoinitiator can be 6 times or less.
    Type: Application
    Filed: March 19, 2021
    Publication date: June 1, 2023
    Inventors: Asako Naruse, Tomoshi Kumazawa, Yuuki Arakawa
  • Publication number: 20230159377
    Abstract: An inkjet ink for a glass substrate can enable formation of an aesthetic image with high concealability on the surface of the glass substrate. The inkjet ink disclosed here can include: an inorganic solid including an inorganic pigment that develops a color except for black and a glass frit; a monomer component having a photocuring property; and a photoinitiator. In the inkjet ink, a volume ratio of the inorganic solid in a case where an ink total volume is 100 volume % can be 35 volume % or less, a volume ratio of the inorganic pigment in the case where a total volume of the inorganic solid is 100 volume % can be 15 volume % or more and less than 90 volume %, and a volume ratio of the inorganic pigment to the photoinitiator can be 11 times or less.
    Type: Application
    Filed: March 19, 2021
    Publication date: May 25, 2023
    Inventors: Asako Naruse, Tomoshi Kumazawa, Yuuki Arakawa
  • Publication number: 20220089893
    Abstract: Inkjet ink disclosed herein, usable for at least a transfer sheet suitable for an inorganic substrate, contains an inorganic solid content and a photocurable monomer component. The monomer component contains at least a monofunctional acrylate-based monomer, a monofunctional N-vinyl compound monomer, and a polyfunctional vinylether-based monomer. With respect to 100% by mass as the total weight of the monomer component, the monofunctional acrylate-based monomer is contained at a weight ratio of 40% by mass to 96% by mass, the monofunctional N-vinyl compound monomer is contained at a weight ratio of 2% by mass to 20% by mass, and the polyfunctional vinylether-based monomer is contained at a weight ratio of 2% by mass to 40% by mass.
    Type: Application
    Filed: December 27, 2019
    Publication date: March 24, 2022
    Inventors: Tomoshi Kumazawa, Hiromichi Hayashi, Yuuki Arakawa
  • Publication number: 20220017761
    Abstract: The inkjet ink disclosed herein includes an inorganic solid portion including an inorganic pigment and glass and a monomer component having a photocurability. The ink is configured such that a volume of the inorganic solid portion when a total volume of the inkjet ink is 100 vol % is 30 vol % or less, and a volume of the glass when the total volume of the inorganic solid portion is 100 vol % is 78 vol % or more.
    Type: Application
    Filed: December 27, 2019
    Publication date: January 20, 2022
    Inventors: Tomoshi Kumazawa, Hiromichi Hayashi, Yuuki Arakawa
  • Publication number: 20210388214
    Abstract: The present invention provides a red paint for ceramic decoration, including a glass matrix, and a red colorant and a protective material that are intermingled in the glass matrix. The red colorant contains gold nanoparticles and silver nanoparticles. The protective material contains silica nanoparticles.
    Type: Application
    Filed: August 26, 2021
    Publication date: December 16, 2021
    Inventors: Hiromichi Hayashi, Jun Shiota, Tomoshi Kumazawa
  • Patent number: 11130872
    Abstract: The present invention provides a red paint for ceramic decoration, including a glass matrix, and a red colorant and a protective material that are intermingled in the glass matrix. The red colorant contains gold nanoparticles and silver nanoparticles. The protective material contains silica nanoparticles.
    Type: Grant
    Filed: March 17, 2017
    Date of Patent: September 28, 2021
    Assignee: Noritake Co., Limited
    Inventors: Hiromichi Hayashi, Jun Shiota, Tomoshi Kumazawa
  • Patent number: 11130875
    Abstract: The present invention provides an inkjet ink for a ceramic substrate, the inkjet ink making it possible to prevent a printed layer from peeling away after firing and allowing a desired image to be better fixed on a ceramic substrate. In the inkjet ink for a ceramic substrate disclosed here, the proportion of a monofunctional monomer in a monomer component is at least 90 mass %, the volume ratio of an inorganic solid relative to the total volume of the inkjet ink is 10 vol % to 20 vol %, and the ratio of the content of an N-vinyl compound to that of the monomer component (N-vinyl compound/monomer component) in the inkjet ink is 0.05 to 0.8 in terms of mass.
    Type: Grant
    Filed: August 7, 2018
    Date of Patent: September 28, 2021
    Inventors: Hiromichi Hayashi, Tomoshi Kumazawa
  • Publication number: 20200199389
    Abstract: The present invention provides an inkjet ink for a ceramic substrate, the inkjet ink making it possible to prevent a printed layer from peeling away after firing and allowing a desired image to be better fixed on a ceramic substrate. In the inkjet ink for a ceramic substrate disclosed here, the proportion of a monofunctional monomer in a monomer component is at least 90 mass %, the volume ratio of an inorganic solid relative to the total volume of the inkjet ink is 10 vol % to 20 vol %, and the ratio of the content of an N-vinyl compound to that of the monomer component (N-vinyl compound/monomer component) in the inkjet ink is 0.05 to 0.8 in terms of mass.
    Type: Application
    Filed: August 7, 2018
    Publication date: June 25, 2020
    Inventors: Hiromichi Hayashi, Tomoshi Kumazawa
  • Publication number: 20190112490
    Abstract: The present invention provides a red paint for ceramic decoration, including a glass matrix, and a red colorant and a protective material that are intermingled in the glass matrix. The red colorant contains gold nanoparticles and silver nanoparticles. The protective material contains silica nanoparticles.
    Type: Application
    Filed: March 17, 2017
    Publication date: April 18, 2019
    Inventors: Hiromichi HAYASHI, Jun SHIOTA, Tomoshi KUMAZAWA