Patents by Inventor Daisei FUJITO

Daisei FUJITO 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: 11746423
    Abstract: A rolled metal sheet includes an obverse surface and a reverse surface that is a surface located opposite to the obverse surface. At least either one of the obverse surface and the reverse surface is a processing object. A method for manufacturing a metal mask substrate includes reducing a thickness of the rolled metal sheet to 10 ?m or less by etching the processing object by 3 ?m or more by use of an acidic etching liquid, and roughening the processing object so that the processing object becomes a resist formation surface that has a surface roughness Rz of 0.2 ?m or more, thereby obtaining a metal mask sheet.
    Type: Grant
    Filed: July 30, 2021
    Date of Patent: September 5, 2023
    Assignee: TOPPAN PRINTING CO., LTD.
    Inventors: Naoko Mikami, Sumika Tamura, Reiji Terada, Masashi Kurata, Daisei Fujito, Kiyoaki Nishitsuji, Takehiro Nishi
  • Patent number: 11706968
    Abstract: A metal mask substrate includes a metal obverse surface configured such that a resist is placed on the obverse surface. The obverse surface has a three-dimensional surface roughness Sa of less than or equal to 0.11 ?m. The obverse surface also has a three-dimensional surface roughness Sz of less than or equal to 3.17 ?m.
    Type: Grant
    Filed: November 20, 2020
    Date of Patent: July 18, 2023
    Assignee: TOPPAN PRINTING CO., LTD.
    Inventors: Daisei Fujito, Kiyoaki Nishitsuji, Takehiro Nishi
  • Patent number: 11453940
    Abstract: A vapor deposition metal mask substrate includes a nickel-containing metal sheet including a obverse surface and a reverse surface, which is opposite to the obverse surface. At least one of the obverse surface and the reverse surface is a target surface for placing a resist layer. The target surface has a surface roughness Sa of less than or equal to 0.019 ?m. The target surface has a surface roughness Sz of less than or equal to 0.308 ?m.
    Type: Grant
    Filed: September 4, 2020
    Date of Patent: September 27, 2022
    Assignee: TOPPAN PRINTING CO., LTD.
    Inventors: Sumika Tamura, Mikio Shinno, Daisei Fujito, Kiyoaki Nishitsuji, Takehiro Nishi, Naoko Mikami
  • Publication number: 20210355586
    Abstract: A rolled metal sheet includes an obverse surface and a reverse surface that is a surface located opposite to the obverse surface. At least either one of the obverse surface and the reverse surface is a processing object. A method for manufacturing a metal mask substrate includes reducing a thickness of the rolled metal sheet to 10 ?m or less by etching the processing object by 3 ?m or more by use of an acidic etching liquid, and roughening the processing object so that the processing object becomes a resist formation surface that has a surface roughness Rz of 0.2 ?m or more, thereby obtaining a metal mask sheet.
    Type: Application
    Filed: July 30, 2021
    Publication date: November 18, 2021
    Inventors: Naoko MIKAMI, Sumika TAMURA, Reiji TERADA, Masashi KURATA, Daisei FUJITO, Kiyoaki NISHITSUJI, Takehiro NISHI
  • Patent number: 11111585
    Abstract: A rolled metal sheet includes an obverse surface and a reverse surface that is a surface located opposite to the obverse surface. At least either one of the obverse surface and the reverse surface is a processing object. A method for manufacturing a metal mask substrate includes reducing a thickness of the rolled metal sheet to 10 ?m or less by etching the processing object by 3 ?m or more by use of an acidic etching liquid, and roughening the processing object so that the processing object becomes a resist formation surface that has a surface roughness Rz of 0.2 ?m or more, thereby obtaining a metal mask sheet.
    Type: Grant
    Filed: October 17, 2017
    Date of Patent: September 7, 2021
    Assignee: TOPPAN PRINTING CO., LTD.
    Inventors: Naoko Mikami, Sumika Tamura, Reiji Terada, Masashi Kurata, Daisei Fujito, Kiyoaki Nishitsuji, Takehiro Nishi
  • Publication number: 20210091312
    Abstract: A metal mask substrate includes a metal obverse surface configured such that a resist is placed on the obverse surface. The obverse surface has a three-dimensional surface roughness Sa of less than or equal to 0.11 ?m. The obverse surface also has a three-dimensional surface roughness Sz of less than or equal to 3.17 ?m.
    Type: Application
    Filed: November 20, 2020
    Publication date: March 25, 2021
    Inventors: Daisei FUJITO, Kiyoaki NISHITSUJI, Takehiro NISHI
  • Patent number: 10903426
    Abstract: A metal mask substrate includes a metal obverse surface configured such that a resist is placed on the obverse surface. The obverse surface has a three-dimensional surface roughness Sa of less than or equal to 0.11 ?m. The obverse surface also has a three-dimensional surface roughness Sz of less than or equal to 3.17 ?m.
    Type: Grant
    Filed: January 12, 2018
    Date of Patent: January 26, 2021
    Assignee: TOPPAN PRINTING CO., LTD.
    Inventors: Daisei Fujito, Kiyoaki Nishitsuji, Takehiro Nishi
  • Patent number: 10876215
    Abstract: A vapor deposition metal mask substrate includes a nickel-containing metal sheet including a obverse surface and a reverse surface, which is opposite to the obverse surface. At least one of the obverse surface and the reverse surface is a target surface for placing a resist layer. The target surface has a surface roughness Sa of less than or equal to 0.019 ?m. The target surface has a surface roughness Sz of less than or equal to 0.308 ?m.
    Type: Grant
    Filed: October 17, 2017
    Date of Patent: December 29, 2020
    Assignee: TOPPAN PRINTING CO., LTD.
    Inventors: Sumika Tamura, Mikio Shinno, Daisei Fujito, Kiyoaki Nishitsuji, Takehiro Nishi, Naoko Mikami
  • Publication number: 20200399770
    Abstract: A vapor deposition metal mask substrate includes a nickel-containing metal sheet including a obverse surface and a reverse surface, which is opposite to the obverse surface. At least one of the obverse surface and the reverse surface is a target surface for placing a resist layer. The target surface has a surface roughness Sa of less than or equal to 0.019 ?m. The target surface has a surface roughness Sz of less than or equal to 0.308 ?m.
    Type: Application
    Filed: September 4, 2020
    Publication date: December 24, 2020
    Inventors: Sumika TAMURA, Mikio SHINNO, Daisei FUJITO, Kiyoaki NISHITSUJI, Takehiro NISHI, Naoko MIKAMI
  • Patent number: 10273569
    Abstract: A metal mask substrate includes a metal surface to which a resist is to be disposed. A specular reflectance of incident light to the surface is 45.2% or more.
    Type: Grant
    Filed: October 17, 2017
    Date of Patent: April 30, 2019
    Assignee: TOPPAN PRINTING CO., LTD.
    Inventors: Sumika Tamura, Naoko Mikami, Daisei Fujito, Kiyoaki Nishitsuji, Takehiro Nishi
  • Publication number: 20180138410
    Abstract: A metal mask substrate includes a metal obverse surface configured such that a resist is placed on the obverse surface. The obverse surface has a three-dimensional surface roughness Sa of less than or equal to 0.11 ?m. The obverse surface also has a three-dimensional surface roughness Sz of less than or equal to 3.17 ?m.
    Type: Application
    Filed: January 12, 2018
    Publication date: May 17, 2018
    Inventors: Daisei FUJITO, Kiyoaki NISHITSUJI, Takehiro NISHI
  • Publication number: 20180065162
    Abstract: A rolled metal sheet includes an obverse surface and a reverse surface that is a surface located opposite to the obverse surface. At least either one of the obverse surface and the reverse surface is a processing object. A method for manufacturing a metal mask substrate includes reducing a thickness of the rolled metal sheet to 10 ?m or less by etching the processing object by 3 ?m or more by use of an acidic etching liquid, and roughening the processing object so that the processing object becomes a resist formation surface that has a surface roughness Rz of 0.2 ?m or more, thereby obtaining a metal mask sheet.
    Type: Application
    Filed: October 17, 2017
    Publication date: March 8, 2018
    Inventors: Naoko MIKAMI, Sumika TAMURA, Reiji TERADA, Masashi KURATA, Daisei FUJITO, Kiyoaki NISHITSUJI, Takehiro NISHI
  • Publication number: 20180066352
    Abstract: A metal mask substrate includes a metal surface to which a resist is to be disposed. A specular reflectance of incident light to the surface is 45.2% or more.
    Type: Application
    Filed: October 17, 2017
    Publication date: March 8, 2018
    Inventors: Sumika TAMURA, Naoko MIKAMI, Daisei FUJITO, Kiyoaki NISHITSUJI, Takehiro NISHI
  • Publication number: 20180038002
    Abstract: A vapor deposition metal mask substrate includes a nickel-containing metal sheet including a obverse surface and a reverse surface, which is opposite to the obverse surface. At least one of the obverse surface and the reverse surface is a target surface for placing a resist layer. The target surface has a surface roughness Sa of less than or equal to 0.019 ?m. The target surface has a surface roughness Sz of less than or equal to 0.308 ?m.
    Type: Application
    Filed: October 17, 2017
    Publication date: February 8, 2018
    Inventors: Sumika TAMURA, Mikio SHINNO, Daisei FUJITO, Kiyoaki NISHITSUJI, Takehiro NISHI, Naoko MIKAMI