Patents by Inventor Meiten Kou

Meiten Kou 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: 10381546
    Abstract: An object of the present invention is to provide a bimorph piezoelectric film that enables the production of touch panels and the like that are less influenced by pyroelectric noise due to temperature change, and exhibit high transparency. The present invention provides a bimorph piezoelectric film comprising in sequence a first piezoelectric film, a tackifier layer or an adhesive agent layer, and a second piezoelectric film, the first piezoelectric film and the second piezoelectric film being disposed in such a manner that their surfaces on which electric charges of the same polarity are generated by a temperature increase are each outward-facing, the first piezoelectric film and the second piezoelectric film each having a total light transmittance of 90% or more, and a total haze value of 8.0% or less.
    Type: Grant
    Filed: February 26, 2015
    Date of Patent: August 13, 2019
    Assignee: DAIKIN INDUSTRIES, LTD.
    Inventors: Meiten Kou, Tetsuhiro Kodani, Tomoyuki Gotou, Saori Inaba, Takashi Kanemura
  • Patent number: 10108287
    Abstract: A touch panel hardly affected by pyroelectric noise due to temperature includes a first pyroelectric material and a second pyroelectric material, and is capable of detecting press pressure applied to the first pyroelectric material and/or the second pyroelectric material. The upper surface of the first pyroelectric material and the lower surface of the second pyroelectric material are surfaces on which a positive charge is generated when the temperature increases, and a negative charge is generated when the temperature decreases. The lower surface of the first pyroelectric material and the upper surface of the second pyroelectric material are surfaces on which a negative charge is generated when the temperature increases, and a positive charge is generated when the temperature decreases.
    Type: Grant
    Filed: October 8, 2014
    Date of Patent: October 23, 2018
    Assignee: DAIKIN INDUSTRIES, LTD.
    Inventors: Tetsuhiro Kodani, Eri Mukai, Takashi Kanemura, Meiten Kou
  • Patent number: 10084292
    Abstract: An object of the present invention is to provide a polarized vinylidene fluoride/tetrafluoroethylene copolymer resin film that can significantly reduce, when used as an optical film, the deterioration of the quality of video or still images formed by display elements. The present invention provides a polarized vinylidene fluoride/tetrafluoroethylene copolymer resin film having 2,000 or fewer spot defects per m2, the number of spot defects being measured by a defect measurement method; the method using an surface inspection system in which a CCD camera is placed so as to detect defects at an angle of 45 degrees relative to an LED source, defects of the film are read within a rectangular range of 300 mm in a width direction (the direction perpendicular to the scanning direction), and 150 mm in a machine direction (the scanning direction), while the film is scanned under the camera at a rate of 20 m/min; wherein first, defects having a bright area of 1.5 mm2 or less and a dark area of 1.
    Type: Grant
    Filed: November 30, 2017
    Date of Patent: September 25, 2018
    Assignees: DAIKIN INDUSTRIES, LTD., TOHO KASEI CO., LTD.
    Inventors: Tetsuhiro Kodani, Eri Mukai, Takashi Kanemura, Meiten Kou, Susumu Kawato, Satoshi Shimizu
  • Publication number: 20180097338
    Abstract: An object of the present invention is to provide a polarized vinylidene fluoride/tetrafluoroethylene copolymer resin film that can significantly reduce, when used as an optical film, the deterioration of the quality of video or still images formed by display elements. The present invention provides a polarized vinylidene fluoride/tetrafluoroethylene copolymer resin film having 2,000 or fewer spot defects per m2, the number of spot defects being measured by a defect measurement method; the method using an surface inspection system in which a CCD camera is placed so as to detect defects at an angle of 45 degrees relative to an LED source, defects of the film are read within a rectangular range of 300 mm in a width direction (the direction perpendicular to the scanning direction), and 150 mm in a machine direction (the scanning direction), while the film is scanned under the camera at a rate of 20 m/min; wherein first, defects having a bright area of 1.5 mm2 or less and a dark area of 1.
    Type: Application
    Filed: November 30, 2017
    Publication date: April 5, 2018
    Applicants: DAIKIN INDUSTRIES, LTD., TOHO KASEI CO., LTD.
    Inventors: Tetsuhiro KODANI, Eri MUKAI, Takashi KANEMURA, Meiten KOU, Susumu KAWATO, Satoshi SHIMIZU
  • Patent number: 9865996
    Abstract: An object of the present invention is to provide a polarized vinylidene fluoride/tetrafluoroethylene copolymer resin film that can significantly reduce, when used as an optical film, the deterioration of the quality of video or still images formed by display elements. The present invention provides a polarized vinylidene fluoride/tetrafluoroethylene copolymer resin film having 2,000 or fewer spot defects per m2, the number of spot defects being measured by a defect measurement method; the method using an surface inspection system in which a CCD camera is placed so as to detect defects at an angle of 45 degrees relative to an LED source, defects of the film are read within a rectangular range of 300 mm in a width direction (the direction perpendicular to the scanning direction), and 150 mm in a machine direction (the scanning direction), while the film is scanned under the camera at a rate of 20 m/min; wherein first, defects having a bright area of 1.5 mm2 or less and a dark area of 1.
    Type: Grant
    Filed: December 27, 2013
    Date of Patent: January 9, 2018
    Assignees: DAIKIN INDUSTRIES, LTD., TOHO KASEI CO., LTD.
    Inventors: Tetsuhiro Kodani, Eri Mukai, Takashi Kanemura, Meiten Kou, Susumu Kawato, Satoshi Shimizu
  • Publication number: 20170033276
    Abstract: An object of the present invention is to provide a bimorph piezoelectric film that enables the production of touch panels and the like that are less influenced by pyroelectric noise due to temperature change, and exhibit high transparency. The present invention provides a bimorph piezoelectric film comprising in sequence a first piezoelectric film, a tackifier layer or an adhesive agent layer, and a second piezoelectric film, the first piezoelectric film and the second piezoelectric film being disposed in such a manner that their surfaces on which electric charges of the same polarity are generated by a temperature increase are each outward-facing, the first piezoelectric film and the second piezoelectric film each having a total light transmittance of 90% or more, and a total haze value of 8.0% or less.
    Type: Application
    Filed: February 26, 2015
    Publication date: February 2, 2017
    Applicant: DAIKIN INDUSTRIES, LTD.
    Inventors: Meiten KOU, Tetsuhiro KODANI, Tomoyuki GOTOU, Saori INABA, Takashi KANEMURA
  • Publication number: 20160264742
    Abstract: A primary object of the present invention is to provide a film exhibiting high electrical insulation properties and excellent withstand voltage properties and a method for producing the film. As a means for achieving the object, the present invention provides a vinylidene fluoride-based polymer film in which the 99% voltage failure resistance value in a Weibull plot is 300 V/?m or more.
    Type: Application
    Filed: October 8, 2014
    Publication date: September 15, 2016
    Applicant: DAIKIN INDUSTRIES, LTD.
    Inventors: Meiten KOU, Takashi KANEMURA, Eri MUKAI, Tetsuhiro KODANI
  • Publication number: 20160202823
    Abstract: A touch panel hardly affected by pyroelectric noise due to temperature includes a first pyroelectric material and a second pyroelectric material, and is capable of detecting press pressure applied to the first pyroelectric material and/or the second pyroelectric material. The upper surface of the first pyroelectric material and the lower surface of the second pyroelectric material are surfaces on which a positive charge is generated when the temperature increases, and a negative charge is generated when the temperature decreases. The lower surface of the first pyroelectric material and the upper surface of the second pyroelectric material are surfaces on which a negative charge is generated when the temperature increases, and a positive charge is generated when the temperature decreases.
    Type: Application
    Filed: October 8, 2014
    Publication date: July 14, 2016
    Inventors: Tetsuhiro KODANI, Eri MUKAI, Takashi KANEMURA, Meiten KOU
  • Publication number: 20150349500
    Abstract: An object of the present invention is to provide a polarized vinylidene fluoride/tetrafluoroethylene copolymer resin film that can significantly reduce, when used as an optical film, the deterioration of the quality of video or still images formed by display elements. The present invention provides a polarized vinylidene fluoride/tetrafluoroethylene copolymer resin film having 2,000 or fewer spot defects per m2, the number of spot defects being measured by a defect measurement method; the method using an surface inspection system in which a CCD camera is placed so as to detect defects at an angle of 45 degrees relative to an LED source, defects of the film are read within a rectangular range of 300 mm in a width direction (the direction perpendicular to the scanning direction), and 150 mm in a machine direction (the scanning direction), while the film is scanned under the camera at a rate of 20 m/min; wherein first, defects having a bright area of 1.5 mm2 or less and a dark area of 1.
    Type: Application
    Filed: December 27, 2013
    Publication date: December 3, 2015
    Inventors: Tetsuhiro KODANI, Eri MUKAI, Takashi KANEMURA, Meiten KOU, Susumu KAWATO, Satoshi SHIMIZU
  • Publication number: 20140016176
    Abstract: A hydrophobic dielectric film for electrowetting, which can drive a conductive liquid by using a low voltage and containing a vinylidene fluoride based polymer.
    Type: Application
    Filed: February 8, 2012
    Publication date: January 16, 2014
    Applicant: DAIKIN INDUSTRIES, LTD.
    Inventors: Tetsuhiro Kodani, Kouji Yokotani, Nobuyuki Komatsu, Meiten Kou, Takashi Kanemura