Patents by Inventor Toshiya Ichiki

Toshiya Ichiki 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).

  • Water-soluble film, production method thereof, and chemical agent package
    Patent number: 11634547
    Abstract: A water-soluble film is provided, which is less susceptible to curling even after long-term storage. The water-soluble film includes a polyvinyl alcohol resin (A) , and has a first surface, which has a crystal Unity index Xa, and a second surface, which is opposite to the first surface and has a crystallinity index Xb, where: Xa?Xb; Xa?Xb is from 0.015 to 0.10; and the crystallinity indexes Xa and Xb are measured through an infrared spectroscopic analysis by an attenuated total reflection method and represented by: ABS1141/ABS1093, wherein ABS1141 and ABS1093 are absorbances at wavenumbers of 1141 cm?1 and 1093 cm?1, respectively.
    Type: Grant
    Filed: September 24, 2020
    Date of Patent: April 25, 2023
    Assignee: Mitsubishi Chemical Corporation
    Inventors: Kouichirou Nakahara, Toshiya Ichiki
  • WATER-SOLUBLE FILM, PRODUCTION METHOD THEREOF, AND CHEMICAL AGENT PACKAGE
    Publication number: 20210009774
    Abstract: A highly transparent water-soluble film is provided. The water-soluble film includes a polyvinyl alcohol resin (A) as a major component. When evaluation of the water-soluble film for dark defects is performed, 50 dark defects or less per 5 cm×5 cm area of the water-soluble film are observed.
    Type: Application
    Filed: September 24, 2020
    Publication date: January 14, 2021
    Applicant: Mitsubishi Chemical Corporation
    Inventor: Toshiya ICHIKI
  • WATER-SOLUBLE FILM, PRODUCTION METHOD THEREOF, AND CHEMICAL AGENT PACKAGE
    Publication number: 20210009773
    Abstract: A water-soluble film is provided, which is less susceptible to curling even after long-term storage. The water-soluble film includes a polyvinyl alcohol resin (A) , and has a first surface, which has a crystal Unity index Xa, and a second surface, which is opposite to the first surface and has a crystallinity index Xb, where: Xa?Xb; Xa?Xb is from 0.015 to 0.10; and the crystallinity indexes Xa and Xb are measured through an infrared spectroscopic analysis by an attenuated total reflection method and represented by: ABS1141/ABS1093, wherein ABS1141 and ABS1093 are absorbances at wavenumbers of 1141 cm?1 and 1093 cm?1, respectively.
    Type: Application
    Filed: September 24, 2020
    Publication date: January 14, 2021
    Applicant: Mitsubishi Chemical Corporation
    Inventors: Kouichirou NAKAHARA, Toshiya Ichiki