Patents by Inventor Chiyo ISHIZU

Chiyo ISHIZU 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).

  • Adhesive and adhesive tape
    Patent number: 10858557
    Abstract: An adhesive includes: a urethane prepolymer (A) obtained by reacting a polyol (a) with a polyisocyanate (b) under such conditions that the molar ratio of NCO/OH is 0.5-0.9 and having a molecular-weight dispersion degree [(weight-average molecular weight (Mw))/(number-average molecular weight (Mn)); hereinafter referred to also as Mw/Mn] of 4-12; a polyfunctional polyol (B), and an isocyanate curing agent (C).
    Type: Grant
    Filed: September 19, 2017
    Date of Patent: December 8, 2020
    Assignees: TOYO INK SC HOLDINGS CO., LTD., TOYOCHEM CO., LTD.
    Inventors: Shingo Tanabe, Katsunori Fukuta, Chiyo Ishizu, Shuhei Saito
  • ADHESIVE AND ADHESIVE TAPE
    Publication number: 20180002582
    Abstract: An adhesive includes: a urethane prepolymer (A) obtained by reacting a polyol (a) with a polyisocyanate (b) under such conditions that the molar ratio of NCO/OH is 0.5-0.9 and having a molecular-weight dispersion degree [(weight-average molecular weight (Mw))/(number-average molecular weight (Mn)); hereinafter referred to also as Mw/Mn] of 4-12; a polyfunctional polyol (B), and an isocyanate curing agent (C).
    Type: Application
    Filed: September 19, 2017
    Publication date: January 4, 2018
    Applicants: TOYO INK SC HOLDINGS CO., LTD., TOYOCHEM CO., LTD.
    Inventors: Shingo TANABE, Katsunori FUKUTA, Chiyo ISHIZU, Shuhei SAITO