Patents by Inventor Kengo HIRASAWA

Kengo HIRASAWA 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).

  • Publication number: 20240184203
    Abstract: A composition includes a metal compound, a polymer including a first structural unit represented by formula (1) and a second structural unit represented by formula (2), and a solvent. R1 is a hydrogen atom or a substituted or unsubstituted monovalent hydrocarbon group having 1 to 20 carbon atoms; and R2 is a substituted or unsubstituted monovalent hydrocarbon group having 1 to 20 carbon atoms. R3 is a hydrogen atom or a substituted or unsubstituted monovalent hydrocarbon group having 1 to 20 carbon atoms; L is a single bond or a divalent linking group; Ar is a group obtained by removing (n+1) hydrogen atoms from a substituted or unsubstituted aromatic ring having 6 to 20 ring members; R4 is a monovalent hydroxyalkyl group having 1 to 10 carbon atoms or a hydroxy group; and n is an integer of 0 to 8.
    Type: Application
    Filed: January 25, 2024
    Publication date: June 6, 2024
    Applicant: JSR CORPORATION
    Inventors: Yuki OZAKI, Ryuichi SERIZAWA, Kengo HIRASAWA, Hiroki HIRABAYASHI
  • Publication number: 20230250238
    Abstract: A silicon-containing composition includes a polysiloxane compound and solvent. The polysiloxane compound includes a fluorine atom and a group including an ester bond. The polysiloxane compound preferably includes a first structural unit represented by formula (1), and a second structural unit represented by formula (2). X represents a monovalent organic group having 1 to 20 carbon atoms and comprising a fluorine atom; R1 represents a halogen atom, a hydroxy group, or a monovalent organic group having 1 to 20 carbon atoms; Y represents a monovalent organic group having 1 to 20 carbon atoms and comprising an ester bond; and R2 represents a halogen atom, a hydroxy group, or a monovalent organic group having 1 to 20 carbon atoms.
    Type: Application
    Filed: August 15, 2022
    Publication date: August 10, 2023
    Applicant: JSR CORPORATION
    Inventors: Ryuichi SERIZAWA, Kengo HIRASAWA
  • Publication number: 20230093664
    Abstract: A silicon-containing composition includes: a first polysiloxane; a second polysiloxane different from the first polysiloxane; and a solvent. The first polysiloxane includes a group which includes at least one selected from the group consisting of an ester bond, a carbonate structure, and a cyano group. The second polysiloxane includes a substituted or unsubstituted hydrocarbon group having 1 to 20 carbon atoms.
    Type: Application
    Filed: October 27, 2022
    Publication date: March 23, 2023
    Applicant: JSR Corporation
    Inventors: Ryuichi Serizawa, Kengo Hirasawa, Akitaka Nii
  • Publication number: 20220403116
    Abstract: A silicon-containing composition includes a polysiloxane compound and solvent. The polysiloxane compound includes a fluorine atom and a group including an ester bond. The polysiloxane compound preferably includes a first structural unit represented by formula (1), and a second structural unit represented by formula (2). X represents a monovalent organic group having 1 to 20 carbon atoms and comprising a fluorine atom; R1 represents a halogen atom, a hydroxy group, or a monovalent organic group having 1 to 20 carbon atoms; Y represents a monovalent organic group having 1 to 20 carbon atoms and comprising an ester bond; and R2 represents a halogen atom, a hydroxy group, or a monovalent organic group having 1 to 20 carbon atoms.
    Type: Application
    Filed: August 15, 2022
    Publication date: December 22, 2022
    Applicant: JSR CORPORATION
    Inventors: Ryuichi SERIZAWA, Kengo HIRASAWA