Patents by Inventor Ryunosuke TAKI

Ryunosuke TAKI 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).

  • POLYAMIDE ACID COMPOSITION AND METHOD FOR PRODUCING SAME, POLYIMIDE FILM, LAMINATE AND METHOD FOR PRODUCING SAME, AND FLEXIBLE DEVICE
    Publication number: 20200369830
    Abstract: A polyamide acid composition contains a polyamide acid having a terminal structure represented by a general formula (1), a polyamide acid having a terminal structure represented by a general formula (2), and a polyamide acid having a terminal structure represented by a general formula (3): wherein X is a tetravalent organic group which is a tetracarboxylic acid dianhydride residue, Y is a divalent organic group which is a diamine residue, and Z is a divalent organic group which is an acid anhydride residue. A polyimide film is obtained by applying a solution of a polyamide acid on a substrate, and cyclodehydrating the polyamide acid by heating.
    Type: Application
    Filed: December 17, 2018
    Publication date: November 26, 2020
    Applicant: KANEKA CORPORATION
    Inventors: Ryunosuke TAKI, Etsuo HORII