Patents by Inventor Mai Takahashi

Mai Takahashi 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: 11912028
    Abstract: A substrate for liquid ejection head comprising, a base material, a heating element including a heating resistor layer for generating thermal energy for discharging a liquid, a wiring layer for supplying electric power to the heating element, and an interlayer insulating film for insulating the heating resistor layer and the wiring layer. A part of a first interlayer insulating film for insulating the heating resistor layer and a first wiring layer adjacent to the heating resistor layer, and a second interlayer insulating film for insulating the first wiring layer and a second wiring layer adjacent to the second interlayer insulating film, includes a material layer represented by SiwOxCyNz (w+x+y+z=100 (at. %), 37?w?60 (at. %), 30?x?53 (at. %), 6?y??29 (at. %), 4?z?9 (at. %)).
    Type: Grant
    Filed: November 5, 2021
    Date of Patent: February 27, 2024
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Mai Hirohara, Kenji Takahashi
  • Publication number: 20170068427
    Abstract: A control method executed by a computer having a display that has at least a first display region and a second display region, a plurality of icons being displayed at least in the second display region, includes changing a display surface area of a screen displayed in the first display region in a width direction parallel to an axis on which at least the plurality of icons are aligned, while the first display region maintains a state of abutting the second display region when a change instruction to change the display surface area of the first display region is received; and displaying the plurality of icons displayed in the second display region so as to be displayed inside the second display region which corresponds to the length in the width direction of the screen displayed in the first display region, in response to the change of the display surface area.
    Type: Application
    Filed: September 1, 2016
    Publication date: March 9, 2017
    Inventors: Hiroki Yamada, Junya Yamaguchi, Mai Takahashi, Hiroshi Fujino
  • Patent number: 9216310
    Abstract: A hydrotalcite-like substance capable of ion exchange with target anions, being of small crystal size that exhibits large basal spacing and excels at anion exchange performance; a process for producing the same; and a method of immobilizing hazardous substances. The hydrotalcite-like substance is produced by mixing an acidic solution containing aluminum and magnesium ions with an alkaline solution containing an alkali to synthesize a hydrotalcite-like substance, followed by, without ageing, water removal or neutralization. The molar ratio of aluminum ions and magnesium ions is preferably in the range of 1:5 to 1:2. Hazardous substances can be immobilized by pulverizing the hydrotalcite-like substance after synthesis and adding the powder to a subject, or adding a hydrotalcite-like substance in slurry form to a subject, or carrying out addition so as to cause the synthesis directly at the position of the subject.
    Type: Grant
    Filed: October 11, 2013
    Date of Patent: December 22, 2015
    Assignees: WASEDA UNIVERSITY, JDC CORPORATION
    Inventors: Atsushi Yamazaki, Mai Takahashi
  • Publication number: 20140039236
    Abstract: A hydrotalcite-like substance capable of ion exchange with target anions, being of small crystal size that exhibits large basal spacing and excels at anion exchange performance; a process for producing the same; and a method of immobilizing hazardous substances. The hydrotalcite-like substance is produced by mixing an acidic solution containing aluminum and magnesium ions with an alkaline solution containing an alkali to synthesize a hydrotalcite-like substance, followed by, without ageing, water removal or neutralization. The molar ratio of aluminum ions and magnesium ions is preferably in the range of 1:5 to 1:2. Hazardous substances can be immobilized by pulverizing the hydrotalcite-like substance after synthesis and adding the powder to a subject, or adding a hydrotalcite-like substance in slurry form to a subject, or carrying out addition so as to cause the synthesis directly at the position of the subject.
    Type: Application
    Filed: October 11, 2013
    Publication date: February 6, 2014
    Applicants: JDC Corporation, Waseda University
    Inventors: Atsushi YAMAZAKI, Mai Takahashi
  • Publication number: 20130267754
    Abstract: A hydrotalcite-like substance capable of ion exchange with target anions, being of small crystal size that exhibits large basal spacing and excels at anion exchange performance; a process for producing the same; and a method of immobilizing hazardous substances. The hydrotalcite-like substance is produced by mixing an acidic solution containing aluminum and magnesium ions with an alkaline solution containing an alkali to synthesize a hydrotalcite-like substance, followed by, without ageing, water removal or neutralization. The molar ratio of aluminum ions and magnesium ions is preferably in the range of 1:5 to 1:2. Hazardous substances can be immobilized by pulverizing the hydrotalcite-like substance after synthesis and adding the powder to a subject, or adding a hydrotalcite-like substance in slurry form to a subject, or carrying out addition so as to cause the synthesis directly at the position of the subject.
    Type: Application
    Filed: April 22, 2013
    Publication date: October 10, 2013
    Inventors: Atsushi Yamazaki, Mai Takahashi
  • Publication number: 20080255400
    Abstract: A hydrotalcite-like substance that is capable of ion exchange with target anions, being of small crystal size and that exhibits large basal spacing, excelling in anion exchange performance; a process for producing the same; and a method of immobilizing hazardous substances. A hydrotalcite-like substance is produced by mixing an acidic solution containing aluminum ions and magnesium ions with an alkaline solution containing an alkali to thereby synthesize a hydrotalcite-like substance, followed by, without ageing, water removal or neutralization. The molar ratio of aluminum ions and magnesium ions is preferably in the range of 1:5 to 1:2. Hazardous substances can be immobilized by pulverizing the hydrotalcite-like substance after synthesis and adding the powder to a subject, or adding a hydrotalcite-like substance in slurry form to a subject, or carrying out addition so as to cause the synthesis directly at the position of the subject.
    Type: Application
    Filed: March 16, 2005
    Publication date: October 16, 2008
    Applicant: Waseda University
    Inventors: Atsushi Yamazaki, Mai Takahashi