Patents by Inventor Yuriko Kudoh

Yuriko Kudoh 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).

  • Glass substrate for information recording medium and method for manufacturing the same
    Patent number: 9437235
    Abstract: The present invention relates to a method for manufacturing a glass substrate for an information recording medium having a high level of cleanness and superior smoothness. The manufacturing method includes a step for washing a disk-shaped glass plate with an acid washing liquid, a step for removing at least part of a surface layer, which is formed on the surface of the glass plate, by performing grinding with diamond abrasion grains, and a step for washing the surface with a neutral or alkaline washing liquid.
    Type: Grant
    Filed: November 23, 2015
    Date of Patent: September 6, 2016
    Assignee: HOYA CORPORATION
    Inventors: Yasuhiro Saito, Toshiaki Hashimoto, Yuriko Kudoh
  • GLASS SUBSTRATE FOR INFORMATION RECORDING MEDIUM AND METHOD FOR MANUFACTURING THE SAME
    Publication number: 20160078891
    Abstract: The present invention relates to a method for manufacturing a glass substrate for an information recording medium having a high level of cleanness and superior smoothness. The manufacturing method includes a step for washing a disk-shaped glass plate with an acid washing liquid, a step for removing at least part of a surface layer, which is formed on the surface of the glass plate, by performing grinding with diamond abrasion grains, and a step for washing the surface with a neutral or alkaline washing liquid.
    Type: Application
    Filed: November 23, 2015
    Publication date: March 17, 2016
    Inventors: Yasuhiro SAITO, Toshiaki HASHIMOTO, Yuriko KUDOH
  • Glass substrate for information recording medium and method for manufacturing the same
    Patent number: 9214180
    Abstract: The present invention relates to a method for manufacturing a glass substrate for an information recording medium having a high level of cleanness and superior smoothness. The manufacturing method includes a step for washing a disk-shaped glass plate with an acid washing liquid, a step for removing at least part of a surface layer, which is formed on the surface of the glass plate, by performing grinding with diamond abrasion grains, and a step for washing the surface with a neutral or alkaline washing liquid.
    Type: Grant
    Filed: April 29, 2014
    Date of Patent: December 15, 2015
    Assignee: HOYA CORPORATION
    Inventors: Yasuhiro Saito, Toshiaki Hashimoto, Yuriko Kudoh
  • GLASS SUBSTRATE FOR INFORMATION RECORDING MEDIUM AND METHOD FOR MANUFACTURING THE SAME
    Publication number: 20140234667
    Abstract: The present invention relates to a method for manufacturing a glass substrate for an information recording medium having a high level of cleanness and superior smoothness. The manufacturing method includes a step for washing a disk-shaped glass plate with an acid washing liquid, a step for removing at least part of a surface layer, which is formed on the surface of the glass plate, by performing grinding with diamond abrasion grains, and a step for washing the surface with a neutral or alkaline washing liquid.
    Type: Application
    Filed: April 29, 2014
    Publication date: August 21, 2014
    Applicant: HOYA CORPORATION
    Inventors: Yasuhiro SAITO, Toshiaki HASHIMOTO, Yuriko KUDOH
  • Glass substrate for information recording medium and method for manufacturing the same
    Patent number: 8740671
    Abstract: The present invention relates to a method for manufacturing a glass substrate for an information recording medium having a high level of cleanness and superior smoothness. The manufacturing method includes a step for washing a disk-shaped glass plate with an acid washing liquid, a step for removing at least part of a surface layer, which is formed on the surface of the glass plate, by performing grinding with diamond abrasion grains, and a step for washing the surface with a neutral or alkaline washing liquid.
    Type: Grant
    Filed: May 24, 2013
    Date of Patent: June 3, 2014
    Assignee: Hoya Corporation
    Inventors: Yasuhiro Saito, Toshiaki Hashimoto, Yuriko Kudoh
  • GLASS SUBSTRATE FOR INFORMATION RECORDING MEDIUM AND METHOD FOR MANUFACTURING THE SAME
    Publication number: 20130260180
    Abstract: The present invention relates to a method for manufacturing a glass substrate for an information recording medium having a high level of cleanness and superior smoothness. The manufacturing method includes a step for washing a disk-shaped glass plate with an acid washing liquid, a step for removing at least part of a surface layer, which is formed on the surface of the glass plate, by performing grinding with diamond abrasion grains, and a step for washing the surface with a neutral or alkaline washing liquid.
    Type: Application
    Filed: May 24, 2013
    Publication date: October 3, 2013
    Applicant: HOYA CORPORATION
    Inventors: Yasuhiro SAITO, Toshiaki HASHIMOTO, Yuriko KUDOH
  • Glass substrate for information recording medium and method for manufacturing the same
    Patent number: 8480454
    Abstract: The present invention relates to a method for manufacturing a glass substrate for an information recording medium having a high level of cleanness and superior smoothness. The manufacturing method includes a step for washing a disk-shaped glass plate with an acid washing liquid, a step for removing at least part of a surface layer, which is formed on the surface of the glass plate, by performing grinding with diamond abrasion grains, and a step for washing the surface with a neutral or alkaline washing liquid.
    Type: Grant
    Filed: March 17, 2011
    Date of Patent: July 9, 2013
    Assignee: Hoya Corporation
    Inventors: Yasuhiro Saito, Toshiaki Hashimoto, Yuriko Kudoh
  • Glass substrate for information recording medium and method for manufacturing same
    Patent number: 8038512
    Abstract: A method for manufacturing a glass substrate for an information recording medium having a high level of cleanness and superior smoothness. The manufacturing method includes washing a disk-shaped glass plate with an acid washing liquid, removing at least part of a surface layer, which is formed on the surface of the glass plate, by performing grinding with diamond abrasion grains, and washing the surface with a neutral or alkaline washing liquid.
    Type: Grant
    Filed: October 22, 2003
    Date of Patent: October 18, 2011
    Assignee: Hoya Corporation
    Inventors: Yasuhiro Saito, Toshiaki Hashimoto, Yuriko Kudoh
  • GLASS SUBSTRATE FOR INFORMATION RECORDING MEDIUM AND METHOD FOR MANUFACTURING THE SAME
    Publication number: 20110165824
    Abstract: The present invention relates to a method for manufacturing a glass substrate for an information recording medium having a high level of cleanness and superior smoothness. The manufacturing method includes a step for washing a disk-shaped glass plate with an acid washing liquid, a step for removing at least part of a surface layer, which is formed on the surface of the glass plate, by performing grinding with diamond abrasion grains, and a step for washing the surface with a neutral or alkaline washing liquid.
    Type: Application
    Filed: March 17, 2011
    Publication date: July 7, 2011
    Applicant: HOYA CORPORATION
    Inventors: Yasuhiro SAITO, Toshiaki HASHIMOTO, Yuriko KUDOH
  • Glass substrate for information recording medium and method for manufacturing same
    Patent number: 7931523
    Abstract: A method for manufacturing a glass substrate for an information recording medium having a high level of cleanness and superior smoothness. The manufacturing method includes washing a disk-shaped glass plate with an acid washing liquid, removing at least part of a surface layer, which is formed on the surface of the glass plate, by performing grinding with diamond abrasion grains, and washing the surface with a neutral or alkaline washing liquid.
    Type: Grant
    Filed: October 22, 2003
    Date of Patent: April 26, 2011
    Assignee: Hoya Corporation
    Inventors: Yasuhiro Saito, Toshiaki Hashimoto, Yuriko Kudoh
  • Glass substrate for information recording medium and method for manufacturing same
    Patent number: 7611639
    Abstract: A method for manufacturing a glass substrate having projections of the same height. The method includes forming a surface layer having a decreased chemical resistance on a glass plate, forming a texture including a plurality of projections having upper portions included in the surface layer, and selectively removing the surface layer.
    Type: Grant
    Filed: October 22, 2003
    Date of Patent: November 3, 2009
    Assignee: Hoya Corporation
    Inventors: Yasuhiro Saito, Toshiaki Hashimoto, Yuriko Kudoh
  • Method for producing chemically strengthened glass substrate for information recording medium
    Patent number: 7415841
    Abstract: Prior to conducting chemical strengthening treatment by contacting a glass with a potassium-containing chemical strengthening treating solution, oxidation treatment is conducted to iron-containing particles adhered to a surface of the glass as a pre-step, and the glass is then chemically strengthened. The oxidation treatment is a heat treatment conducted at 80-400° C. in the air. A glass substrate for an information recording medium is obtained by the method.
    Type: Grant
    Filed: March 27, 2003
    Date of Patent: August 26, 2008
    Assignee: Hoya Corporation
    Inventors: Yuriko Kudoh, Kazuishi Mitani, Yasuhiro Saito
  • Glass substrate for information recording medium and method for manufacturing same
    Publication number: 20060062129
    Abstract: The present invention relates to a method for manufacturing a glass substrate for an information recording medium having a high level of cleanness and superior smoothness. The manufacturing method includes a step (S14) for washing a disk-shaped glass plate (21a) with an acid washing liquid, a step (S15) for removing at least part of a surface layer (27), which is formed on the surface of the glass plate, by performing grinding with diamond abrasion grains, and a step (S16) for washing the surface with a neutral or alkaline washing liquid.
    Type: Application
    Filed: October 22, 2003
    Publication date: March 23, 2006
    Inventors: Yasuhiro Saito, Toshiaki Hashimoto, Yuriko Kudoh
  • Glass substrate for information recording medium and method for manufacturing same
    Publication number: 20060003170
    Abstract: The present invention provides an efficient method for manufacturing a glass substrate (2) having a texture (23) formed by projections (24) of the same height. The method includes forming (S14) a surface layer (27) having a decreased chemical resistance on a glass plate (21a), forming (S15) a texture including a plurality of projections having upper portions included in the surface layer, and selectively removing (S16) the surface layer.
    Type: Application
    Filed: October 22, 2003
    Publication date: January 5, 2006
    Inventors: Yasuhiro Saito, Toshiaki Hashimoto, Yuriko Kudoh
  • Method for producing chemically strengthened glass, method for producing chemically strengthened glass substrate, method for producing glass substrate for information recording medium, and glass substrate for information recording medium obtained by the method
    Publication number: 20030192348
    Abstract: Prior to conducting chemical strengthening treatment by contacting a glass with a potassium-containing chemical strengthening treating solution, oxidation treatment is conducted to iron-containing particles adhered to a surface of the glass as a pre-step, and the glass is then chemically strengthened. The oxidation treatment is a heat treatment conducted at 80-400° C. in the air. A glass substrate for an information recording medium is obtained by the method.
    Type: Application
    Filed: March 27, 2003
    Publication date: October 16, 2003
    Applicant: NIPPON SHEET GLASS CO., LTD.
    Inventors: Yuriko Kudoh, Kazuishi Mitani, Yasuhiro Saito