Patents by Inventor Ryosuke IJUIN

Ryosuke IJUIN 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).

  • Heterocyclic compound and salt thereof, and luminescent substrate composition
    Patent number: 11807612
    Abstract: The aim is to provide a novel compound that can luminesce with high brightness and be used as a luminescent substrate in a firefly bioluminescence system. Provided is a heterocyclic compound, or salt thereof, represented by the following general formula (1): [R1, R2, and R3 are independently hydrogen or an alkyl group having a carbon number of 1-4, with provisos that R1 and R2 are optionally bonded to form a ring and that one of R1 and R2 is optionally bonded to Y1 to form a ring; X is S, O, NR4, or CH2, and Y1 and Y2 are independently N or CR4, where each R4 is independently hydrogen, an alkyl group having a carbon number of 1-4, an alkenyl group having a carbon number of 2-4, or an acyl group having a carbon number of 2-4; n is an integer of 0-4].
    Type: Grant
    Filed: June 29, 2021
    Date of Patent: November 7, 2023
    Assignees: The University of Electro-Communications, TOKYO UNIVERSITY OF PHARMACY & LIFE SCIENCES
    Inventors: Shojiro Maki, Nobuo Kitada, Ryohei Moriya, Hiroshi Aoyama, Ryosuke Ijuin
  • NOVEL HETEROCYCLIC COMPOUND AND SALT THEREOF, AND LUMINESCENT SUBSTRATE COMPOSITION
    Publication number: 20230192635
    Abstract: The aim is to provide a novel compound that can luminesce with high brightness and be used as a luminescent substrate in a firefly bioluminescence system. Provided is a heterocyclic compound, or salt thereof, represented by the following general formula (1): [R1, R2, and R3 are independently hydrogen or an alkyl group having a carbon number of 1-4, with provisos that R1 and R2 are optionally bonded to form a ring and that one of R1 and R2 is optionally bonded to Y1 to form a ring; X is S, O, NR4, or CH2, and Y1 and Y2 are independently N or CR4, where each R4 is independently hydrogen, an alkyl group having a carbon number of 1-4, an alkenyl group having a carbon number of 2-4, or an acyl group having a carbon number of 2-4; n is an integer of 0-4].
    Type: Application
    Filed: June 29, 2021
    Publication date: June 22, 2023
    Applicants: The University of Electro-Communications, TOKYO UNIVERSITY OF PHARMACY & LIFE SCIENCES
    Inventors: Shojiro MAKI, Nobuo KITADA, Ryohei MORIYA, Hiroshi AOYAMA, Ryosuke IJUIN