Patents by Inventor Rie FUJIOKA

Rie FUJIOKA 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).

  • Aromatic tetracarboxylic acid compound
    Patent number: 11964939
    Abstract: An object of the present invention is to provide a novel compound that provides a curing agent that is less likely to volatilize during curing reaction and is excellent in various properties such as heat resistance. As a solution, an aromatic tetracarboxylic acid compound represented by formula (I) below is provided. (In the formula, each R independently represents an alkyl group having 1 to 4 carbon atoms or an alkoxy group having 1 to 4 carbon atoms, and each n independently represents 0 or an integer of 1 to 4.
    Type: Grant
    Filed: October 7, 2019
    Date of Patent: April 23, 2024
    Assignee: HONSHU CHEMICAL INDUSTRY CO., LTD.
    Inventors: Rie Fujioka, Masahiko Saibara
  • AROMATIC TETRACARBOXYLIC ACID COMPOUND
    Publication number: 20210347723
    Abstract: An object of the present invention is to provide a novel compound that provides a curing agent that is less likely to volatilize during curing reaction and is excellent in various properties such as heat resistance. As a solution, an aromatic tetracarboxylic acid compound represented by formula (I) below is provided. (In the formula, each R independently represents an alkyl group having 1 to 4 carbon atoms or an alkoxy group having 1 to 4 carbon atoms, and each n independently represents 0 or an integer of 1 to 4.
    Type: Application
    Filed: October 7, 2019
    Publication date: November 11, 2021
    Inventors: Rie FUJIOKA, Masahiko SAIBARA