Patents by Inventor Tsuguhide Isemura

Tsuguhide Isemura 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).

  • METHOD FOR PRODUCING CHEMICALLY STRENGTHENED GLASS SUBSTRATE FOR DISPLAY DEVICE
    Publication number: 20130338051
    Abstract: The present invention provides a method for producing a chemically strengthened glass for a display device, which is capable of suppressing generation of concave defects. The present invention relates to a method for producing a chemically strengthened glass substrate for a display device, in which a calcium concentration in a cleaning liquid used in a final cleaning step before a chemical strengthening step is 5 ppm or less.
    Type: Application
    Filed: June 3, 2013
    Publication date: December 19, 2013
    Applicant: ASAHI GLASS COMPANY, LIMITED
    Inventors: Shuji Matsumoto, Tsuguhide Isemura, Koji Nakagawa, Kazutaka Ono, Shusaku Akiba, Haruo Aizawa
  • PROCESS FOR PRODUCING CHEMICALLY STRENGTHENED GLASS SUBSTRATE FOR DISPLAY DEVICE
    Publication number: 20120240626
    Abstract: The present invention relates to a process for producing a chemically strengthened glass substrate for a display device, the process including a pre-heating step of pre-heating a glass to a pre-heating temperature and subsequently an ion exchange step of immersing the glass in a chemical strengthening liquid, in which the pre-heating temperature in the pre-heating step and a strain point of the glass satisfy: 220° C.?(strain point?pre-heating temperature).
    Type: Application
    Filed: March 23, 2012
    Publication date: September 27, 2012
    Applicant: Asahi Glass Company, Limited
    Inventors: Syuji MATSUMOTO, Tsuguhide Isemura, Koji Nakagawa, Kazutaka Ono, Shusaku Akiba, Haruo Aizawa
  • Method for producing a fluorinated ester compound by means of gas chromatography
    Publication number: 20030203501
    Abstract: The present invention provides a production method to effectively obtain a product in a yield equal to or higher than an objective level, by accurately analyzing the amount of a fluorinated ester compound at the time of its production, or by accurately analyzing the consumption amount or the produced amount of the product or the fluorinated ester compound at the time of chemical conversion of the fluorinated ester compound.
    Type: Application
    Filed: May 16, 2003
    Publication date: October 30, 2003
    Applicant: ASAHI GLASS COMPANY LIMITED
    Inventors: Kengo Kawahara, Tsuguhide Isemura, Takashi Okazoe