Patents by Inventor Hiroaki ITOI

Hiroaki ITOI 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: 20220376183
    Abstract: An organic electroluminescence device, comprising a cathode, an anode, and at least one emitting layer disposed between the cathode and the anode, wherein the emitting layer contains a first host material, a second host material, and a dopant material, wherein the first host material is a compound represented by the following formula (1), the second host material is a compound represented by the following formula (2), and one or more selected from the group consisting of the compound represented by the formula (1) and the compound represented by the formula (2) have at least one deuterium atom.
    Type: Application
    Filed: December 25, 2020
    Publication date: November 24, 2022
    Applicant: IDEMITSU KOSAN CO.,LTD.
    Inventors: Yongguk LEE, Ryoji MAEDA, Yuki NAKANO, Hiroaki ITOI
  • Patent number: 11482675
    Abstract: An organic electroluminescence device comprising: an anode, a cathode, and an emitting region between the anode and the cathode, wherein the emitting region comprises a first emitting layer and a second emitting layer, the first emitting layer and the second emitting layer are directly adjacent to each other, the first emitting layer is between the anode and the second emitting layer, and one of the first emitting layer and the second emitting layer comprises a compound having at least one deuterium atom.
    Type: Grant
    Filed: June 7, 2021
    Date of Patent: October 25, 2022
    Assignee: IDEMITSU KOSAN CO., LTD.
    Inventors: Satomi Tasaki, Taro Yamaki, Hiroaki Itoi, Yuki Nakano, Yuichiro Kawamura, Ryoji Maeda, Kazuki Nishimura, Yongguk Lee
  • Patent number: 11480635
    Abstract: A tension measuring method installs a reel having a cylindrical coil forming part on a cable to be measured, forms a coil by winding a conductor around the coil forming part, measures a magnetic hysteresis loop of the cable by supplying a current to the coil to generate a magnetic field, and computes a tension of the cable using a parameter determined from the hysteresis loop. A magnetic field sensor and a magnetic flux sensor are provided inside a through hole in the coil forming part, and the cable is positioned inside the through hole. The magnetic field is varied so that the hysteresis loop includes a near-saturation magnetization region, to measure the hysteresis loop using the sensors. The parameter is selected from a magnetic flux or a magnetic flux density, a remanent magnetization, a coercivity, a magnetic permeability, and a hysteresis loss in the near-saturation magnetization region.
    Type: Grant
    Filed: September 1, 2021
    Date of Patent: October 25, 2022
    Assignees: KYOTO UNIVERSITY, TOKYO ROPE MFG. CO., LTD., SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Kazuhiko Tsukada, Toshiyuki Moriya, Hiroaki Itoi, Sadanori Shiiki, Masashi Oikawa, Shinji Nakaue
  • Patent number: 11476424
    Abstract: An organic electroluminescence device includes an emitting region provided between an anode and a cathode, in which the emitting region includes a first emitting layer and a second emitting layer, a ratio DEM1/DEM2 of a film thickness of the first emitting layer DEM1 to a film thickness of the second emitting layer DEM2 is in a range from 2/3 to 3/2, the first emitting layer contains a first host material and a first emitting compound, the second emitting layer contains a second host material and a second emitting compound, and the first host material has a group represented by a formula (10) below and is a compound represented by a formula (1) below.
    Type: Grant
    Filed: December 30, 2021
    Date of Patent: October 18, 2022
    Assignee: IDEMITSU KOSAN CO., LTD.
    Inventors: Yu Kudo, Hiroaki Itoi, Shintaro Ban, Taro Yamaki, Takamoto Morita
  • Publication number: 20220289704
    Abstract: An organic electroluminescence device comprising: a cathode, an anode, and an organic layer disposed between the cathode and the anode, wherein the organic layer comprises a compound represented by the following formula (1), and a compound A having a Stokes shift of 20 nm or smaller and an emission peak wavelength of 440 nm to 465 nm (at least one of Ar1 and Ar2 is a monovalent group having a structure represented by the following formula (2)).
    Type: Application
    Filed: August 7, 2020
    Publication date: September 15, 2022
    Applicant: IDEMITSU KOSAN CO.,LTD.
    Inventors: Hiroaki ITOI, Yuki NAKANO, Satomi TASAKI, Taro YAMAKI
  • Publication number: 20220289726
    Abstract: A compound represented by the following formula (1), wherein in the formula, L1 and L2 are predetermined linking groups, and Ar1 is a monovalent group having a structure represented by the following formula (2).
    Type: Application
    Filed: August 7, 2020
    Publication date: September 15, 2022
    Applicant: IDEMITSU KOSAN CO.,LTD.
    Inventors: Hiroaki ITOI, Yuki NAKANO, Satomi TASAKI, Taro YAMAKI
  • Publication number: 20220285625
    Abstract: An organic electroluminescence device comprising: an anode, a cathode, and an emitting region between the anode and the cathode, wherein the emitting region comprises a first emitting layer and a second emitting layer, the first emitting layer and the second emitting layer are directly adjacent to each other, the first emitting layer is between the anode and the second emitting layer, and one of the first emitting layer and the second emitting layer comprises a compound having at least one deuterium atom.
    Type: Application
    Filed: May 5, 2022
    Publication date: September 8, 2022
    Applicant: IDEMITSU KOSAN CO.,LTD.
    Inventors: Satomi TASAKI, Taro YAMAKI, Hiroaki ITOI, Yuki NAKANO, Yuichiro KAWAMURA, Ryoji MAEDA, Kazuki NISHIMURA, Yongguk LEE
  • Publication number: 20220238805
    Abstract: A compound represented by the following formula (1) wherein the symbols are as defined in the description, and an organic electroluminescent device containing the compound.
    Type: Application
    Filed: March 25, 2022
    Publication date: July 28, 2022
    Applicant: IDEMITSU KOSAN CO., LTD.
    Inventors: Hiroaki ITOI, Tasuku HAKETA, Yusuke TAKAHASHI, Shota TANAKA, Hirokatsu ITO
  • Publication number: 20220173334
    Abstract: An organic electroluminescence device including: a cathode, an anode, and an organic layer disposed between the cathode and the anode, wherein the organic layer comprises an emitting layer and a first layer, the first layer is disposed between the cathode and the emitting layer, the emitting layer comprises one or both of a compound represented by the following formula (1A) and a compound represented by the following formula (1B), and the first layer comprises a compound represented by the following formula (BE1):
    Type: Application
    Filed: April 8, 2020
    Publication date: June 2, 2022
    Applicant: IDEMITSU KOSAN CO.,LTD.
    Inventors: Hiroaki ITOI, Yuki NAKANO, Satomi TASAKI, Taro YAMAKI, Tetsuya MASUDA
  • Publication number: 20220173335
    Abstract: An organic electroluminescence device including a cathode, an anode, and an emitting layer disposed between the cathode and the anode, wherein the emitting layer contains one or both of the compound represented by the following formula (1A) and the compound represented by the following formula (1B) and a compound represented by any one of the specific formulas (11), (21), (31), (41), (51), (61), (71), and (81).
    Type: Application
    Filed: April 8, 2020
    Publication date: June 2, 2022
    Applicant: IDEMITSU KOSAN CO.,LTD.
    Inventors: Hiroaki ITOI, Yuki NAKANO, Satomi TASAKI, Taro YAMAKI, Tetsuya MASUDA
  • Publication number: 20220165964
    Abstract: An organic electroluminescence device comprising: a cathode, an anode, and an organic layer disposed between the cathode and the anode, wherein the organic layer comprises an emitting layer and a first layer, the first layer is disposed between the cathode and the emitting layer, the emitting layer comprises a compound represented by the following formula (1), and the first layer comprises a compound represented by the following formula (BE1):
    Type: Application
    Filed: April 8, 2020
    Publication date: May 26, 2022
    Applicant: IDEMITSU KOSAN CO.,LTD.
    Inventors: Hiroaki ITOI, Yuki NAKANO, Satomi TASAKI, Taro YAMAKI, Tetsuya MASUDA
  • Publication number: 20220165965
    Abstract: An organic electroluminescence device containing a cathode, an anode, and an emitting layer disposed between the cathode and the anode, wherein the emitting layer contains a compound represented by the following formula (1) and one or more compounds selected from the group consisting of a compound represented by the specific formulas (11), (21), (31), (41), (51), (61), (71), and (81).
    Type: Application
    Filed: April 8, 2020
    Publication date: May 26, 2022
    Applicant: IDEMITSU KOSAN CO.,LTD.
    Inventors: Hiroaki ITOI, Yuki NAKANO, Satomi TASAKI, Taro YAMAKI, Tetsuya MASUDA
  • Publication number: 20220075011
    Abstract: A tension measuring method installs a reel having a cylindrical coil forming part on a cable to be measured, forms a coil by winding a conductor around the coil forming part, measures a magnetic hysteresis loop of the cable by supplying a current to the coil to generate a magnetic field, and computes a tension of the cable using a parameter determined from the hysteresis loop. A magnetic field sensor and a magnetic flux sensor are provided inside a through hole in the coil forming part, and the cable is positioned inside the through hole. The magnetic field is varied so that the hysteresis loop includes a near-saturation magnetization region, to measure the hysteresis loop using the sensors. The parameter is selected from a magnetic flux or a magnetic flux density, a remanent magnetization, a coercivity, a magnetic permeability, and a hysteresis loss in the near-saturation magnetization region.
    Type: Application
    Filed: September 1, 2021
    Publication date: March 10, 2022
    Inventors: Kazuhiko TSUKADA, Toshiyuki MORIYA, Hiroaki ITOI, Sadanori SHIIKI, Masashi OIKAWA, Shinji NAKAUE
  • Publication number: 20220029102
    Abstract: An organic light emitting device including an anode; a hole transport region on the anode; an emission layer on the hole transport region; an electron transport region on the emission layer; and a cathode on the electron transport region, wherein the hole transport region includes: a first hole transport layer including a first hole transport material represented by the following Formula 1 or a second hole transport material represented by the following Formula 2; and a second hole transport layer on the first hole transport layer, the second hole transport layer including a third hole transport material represented by the following Formula 3 or a fourth hole transport material represented by the following Formula 4:
    Type: Application
    Filed: October 6, 2021
    Publication date: January 27, 2022
    Inventors: Yoshimasa FUJITA, Shuri SATO, Hiroaki ITOI
  • Publication number: 20220029099
    Abstract: A compound represented by the following formula (1), provided that at least one of R1 to R8 is a deuterium atom; and at least one of Ar1 and Ar2 is a substituted or unsubstituted fused aryl group in which only four or more benzene rings are fused.
    Type: Application
    Filed: November 8, 2019
    Publication date: January 27, 2022
    Applicant: IDEMITSU KOSAN CO.,LTD.
    Inventors: Taro YAMAKI, Satomi TASAKI, Hiroaki ITOI, Yuki NAKANO
  • Publication number: 20210382009
    Abstract: A magnetic detector includes permanent magnets that magnetize a wire rope W in the longitudinal direction, and a search coil that detects a change in the cross sectional area of the wire rope W magnetized by the permanent magnets. The magnetic detector is provided so as to surround a part of the wire rope W. Prior to inspection, the magnetic detector is moved back and forth at least three times across an inspection range of the wire rope W. After the magnetic detector is moved back and forth, the change in the cross sectional area, that is, damage to the wire rope W is inspected by using signals outputted from the search coil.
    Type: Application
    Filed: August 24, 2021
    Publication date: December 9, 2021
    Applicant: TOKYO ROPE MANUFACTURING CO., LTD.
    Inventors: Hiroaki ITOI, Sadanori SHIIKI, Masamichi SUGAHARA, Toshiyuki MORIYA
  • Patent number: 11165029
    Abstract: Provided are an amine compound and an organic electroluminescence device including the same.
    Type: Grant
    Filed: March 22, 2017
    Date of Patent: November 2, 2021
    Assignee: Samsung Display Co., Ltd.
    Inventors: Masatsugu Ueno, Akinori Yamatani, Hiroaki Itoi
  • Patent number: 11165026
    Abstract: A heterocyclic compound represented by Formula 1 and an organic electroluminescence device including the same in an emission layer. In Formula 1, Z is represented by Formula 2-1 or 2-2. In Formula 2-2, X1 to X3 are each independently CR10 or N, and at least one of X1 to X3 is N.
    Type: Grant
    Filed: July 1, 2020
    Date of Patent: November 2, 2021
    Assignee: Samsung Display Co., Ltd.
    Inventor: Hiroaki Itoi
  • Patent number: 11145819
    Abstract: An organic light emitting device including an anode; a hole transport region on the anode; an emission layer on the hole transport region; an electron transport region on the emission layer; and a cathode on the electron transport region, wherein the hole transport region includes: a first hole transport layer including a first hole transport material represented by the following Formula 1 or a second hole transport material represented by the following Formula 2; and a second hole transport layer on the first hole transport layer, the second hole transport layer including a third hole transport material represented by the following Formula 3 or a fourth hole transport material represented by the following Formula 4:
    Type: Grant
    Filed: June 19, 2020
    Date of Patent: October 12, 2021
    Assignee: Samsung Display Co., Ltd.
    Inventors: Yoshimasa Fujita, Shuri Sato, Hiroaki Itoi
  • Publication number: 20210305515
    Abstract: A material for an organic electroluminescent device having high emission efficiency and long life and an organic electroluminescent device including the same. The material for an organic electroluminescent device is represented by the following Formula 1.
    Type: Application
    Filed: May 28, 2021
    Publication date: September 30, 2021
    Inventors: Hiroaki Itoi, Ichinori Takada, Koushin Matsuoka, Masatsugu Ueno, Naoya Sakamoto, Hiromi Nakano, Nobutaka Akashi, Hideo Miyake, Xiulan Jin, Asami Sakamoto, Junta Fuchiwaki