Patents by Inventor Sigma Hashimoto

Sigma Hashimoto 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).

  • COMPOUND, ORGANIC ELECTROLUMINESCENT ELEMENT AND ELECTRONIC DEVICE
    Publication number: 20240074311
    Abstract: A compound is represented by a formula (1) below. In the formula (1): R1 to R9, R101 to R108, and R111 to R118 are each independently a hydrogen atom, a substituted or unsubstituted aryl group having 6 to 20 ring carbon atoms, or the like; Ar12 is a substituted or unsubstituted aryl group having 10 to 30 ring carbon atoms or the like; p is 0 or 1; q is 0 or 1; and p+q is 1 or 2.
    Type: Application
    Filed: June 13, 2023
    Publication date: February 29, 2024
    Applicant: IDEMITSU KOSAN CO.,LTD.
    Inventors: Shintaro BAN, Yu KUDO, Kei YOSHIDA, Sigma HASHIMOTO, Yoshinao SHIRASAKI
  • HETEROCYCLIC COMPOUND AND AN ORGANIC ELECTROLUMINESCENCE DEVICE COMPRISING THE HETEROCYCLIC COMPOUND
    Publication number: 20230137925
    Abstract: Heterocyclic compounds of the general structure (I) below with substituents as defined herein, and materials including one or more such compounds, preferably emitter materials, may be used for an organic electroluminescence device. An organic electroluminescence device may include one or more such specific heterocyclic compounds, as may electronic equipment and a light emitting layer further having at least one host and at least one dopant, wherein the dopant may have at least one of the specific heterocyclic compounds.
    Type: Application
    Filed: June 18, 2021
    Publication date: May 4, 2023
    Applicant: IDEMITSU KOSAN CO.,LTD
    Inventors: Thomas SCHAEFER, Pierre BOUFFLET, Sigma HASHIMOTO, Chao-Chen LIN
  • Polycyclic aromatic compound
    Patent number: 9741950
    Abstract: The invention provides a polycyclic aromatic compound or a salt thereof having a partial structure represented by the following general formula (I): wherein X, ring A, ring B, ring C, and ring D are as defined in the specification.
    Type: Grant
    Filed: August 21, 2015
    Date of Patent: August 22, 2017
    Assignees: KYOTO UNIVERSITY, JNC CORPORATION
    Inventors: Takuji Hatakeyama, Masaharu Nakamura, Sigma Hashimoto
  • POLYCYCLIC AROMATIC COMPOUND
    Publication number: 20160049600
    Abstract: The invention provides a polycyclic aromatic compound or a salt thereof having a partial structure represented by the following general formula (I): wherein X, ring A, ring B, ring C, and ring D are as defined in the specification.
    Type: Application
    Filed: August 21, 2015
    Publication date: February 18, 2016
    Inventors: Takuji HATAKEYAMA, Masaharu NAKAMURA, Sigma HASHIMOTO
  • Polycyclic aromatic compound
    Patent number: 9166176
    Abstract: The invention provides a polycyclic aromatic compound or a salt thereof having a partial structure represented by the following general formula (I): wherein X, ring A, ring B, ring C, and ring D are as defined in the specification.
    Type: Grant
    Filed: March 9, 2012
    Date of Patent: October 20, 2015
    Assignees: Kyoto University, JNC Corporation
    Inventors: Takuji Hatakeyama, Masaharu Nakamura, Sigma Hashimoto
  • POLYCYCLIC AROMATIC COMPOUND
    Publication number: 20140005399
    Abstract: The invention provides a polycyclic aromatic compound or a salt thereof having a partial structure represented by the following general formula (I): wherein X, ring A, ring B, ring C, and ring D are as defined in the specification.
    Type: Application
    Filed: March 9, 2012
    Publication date: January 2, 2014
    Applicant: KYOTO UNIVERSITY
    Inventors: Takuji Hatakeyama, Masaharu Nakamura, Sigma Hashimoto