Patents by Inventor Kazuhiro Nagayama

Kazuhiro Nagayama 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: 20240147833
    Abstract: An iridium complex compound denoted by a formula (1) below. An iridium complex compound which have high solvent solubility and can further improve the luminous efficiency and driving life of the device is provided. [In the formula (1), Ir represents an iridium atom. n is 1 or 2. Ar is a structure represented by a formula (2) below. In the formula (2), a dashed line represents a bond of Ar in the formula (1). m is an integer from m=n+1 to n+5. The substituents R and R1 in the formulas (1) and (2) are preferable a hydrogen atom or D.
    Type: Application
    Filed: November 20, 2023
    Publication date: May 2, 2024
    Applicant: Mitsubishi Chemical Corporation
    Inventors: Kazuhiro Nagayama, Kazuki Okabe, Itsumi Nishio, Mayuko Nara
  • Patent number: 11953875
    Abstract: A cutting processing machine includes a processing machine body and an NC device. The NC device includes a tool diameter correction amount calculator, a processing trace calculator, and a driving controller. The processing machine body includes a processing unit and a tool trace controller. In a case where, as a processing condition, an offset amount between a control center point of a tool trace and a center point of a nozzle is set, the processing trace calculator generates a tool trace control signal for causing the control center point to be displaced relative to the center point of the nozzle by the offset amount in a predetermined direction. The processing machine body controls the tool trace based on the tool trace control signal such that the control center point is displaced relative to the center point of the nozzle in the predetermined direction.
    Type: Grant
    Filed: March 5, 2019
    Date of Patent: April 9, 2024
    Assignee: AMADA CO., LTD.
    Inventors: Takehiro Nagayama, Kazuhiro Kanno
  • Publication number: 20230002428
    Abstract: The present invention relates to an iridium complex compound represented by the following formula (1): in the formula (1), Ir represents an iridium atom, R5 to R14, R21, and R22 each independently represent a hydrogen atom, D, F, Cl, Br, I, or a substituent group, the groups adjacent to each other may be further bonded to each other to form a ring, and any one of R12 and R13 is a substituent group represented by the formula (2).
    Type: Application
    Filed: August 10, 2022
    Publication date: January 5, 2023
    Applicant: Mitsubishi Chemical Corporation
    Inventors: Kazuhiro Nagayama, Akane Kato, Mami Yamashita, Tomohiro Abe, Daisuke Hiro
  • Patent number: 11430961
    Abstract: The object of the present invention is to provide an iridium complex compound emitting red light, a composition comprising the iridium complex compound and a solvent, an organic electroluminescent element which is produced using the compound or the composition and has a long driving life and an excellent electronic durability, and a display device and lighting device using the organic electroluminescent element. The present invention relates to an iridium complex compound solvent having a 2-phenyl quinazoline framework and a specific substituent.
    Type: Grant
    Filed: February 9, 2015
    Date of Patent: August 30, 2022
    Assignee: MITSUBISHI CHEMICAL CORPORATION
    Inventors: Koichi Ishibashi, Kazuhiro Nagayama, Hideji Komatsu, Koichiro Iida
  • Patent number: 11404652
    Abstract: An iridium complex compound of formula (10): wherein Ir represents an iridium atom. m1 represents an integer of 1 or 2, n1 represents an integer of 1 or 2, and m1+n1=3. Ra1 at each occurrence represents an alkyl group or an aralkyl group. Rb1, Rc1, and R21 to R24 each independently represent a hydrogen atom or a substituent. and Ra1 to Rc1 and R21 to R24 may be further bonded to each other to form a ring, and wherein at least one of Rb1 and Rc1 is a substituted or unsubstituted aromatic or heteroaromatic group.
    Type: Grant
    Filed: April 26, 2021
    Date of Patent: August 2, 2022
    Assignee: Mitsubishi Chemical Corporation
    Inventors: Kazuhiro Nagayama, Oki Iemura
  • Publication number: 20220069238
    Abstract: An iridium complex compound denoted by a formula (1) below. A ring Cy1 represents a monocyclic or fused aromatic ring or a monocyclic or fused heteroaromatic ring, which includes carbon atoms C1 and C2. A ring Cy2 represents a monocyclic or fused heteroaromatic ring, which includes carbon atom C3 and a nitrogen atom N1. Each of R1 and R2 represents a hydrogen atom or a substituent. At least one of R1 and R2 is a substituent denoted by a formula (2) below or a substituent further substituted with a substituent denoted by a formula (2) below.
    Type: Application
    Filed: November 11, 2021
    Publication date: March 3, 2022
    Applicant: Mitsubishi Chemical Corporation
    Inventors: Kazuhiro NAGAYAMA, Yoshiko KAJIYAMA
  • Publication number: 20210323986
    Abstract: An iridium complex compound represented by formula (5). Provided is an iridium complex compound that is useful as a material for a light-emitting layer of an organic electroluminescent element, has a narrow half-width of the emission spectrum thereof, has high solubility in a solvent, and has a short wavelength that is not too long and is suitable as a red-light-emitting material. where in formula (5), Ir represents an iridium atom. X represents a bidentate ligand. m represents an integer of 1 to 3. R1 to R22 each independently represent a hydrogen atom or a substituent. Adjacent substituents are optionally bonded together to form a ring. At least one of R13, R17, R18, and R22 represents a substituent other than a hydrogen atom.
    Type: Application
    Filed: July 1, 2021
    Publication date: October 21, 2021
    Applicant: Mitsubishi Chemical Corporation
    Inventors: Kazuhiro NAGAYAMA, Hideji KOMATSU
  • Publication number: 20210257564
    Abstract: An iridium complex compound of formula (10): wherein Ir represents an iridium atom. m1 represents an integer of 1 or 2, n1 represents an integer of 1 or 2, and m1+n1=3. Ra1 at each occurrence represents an alkyl group or an aralkyl group. Rb1, Rc1, and R21 to R24 each independently represent a hydrogen atom or a substituent. and Ra1 to Rc1 and R21 to R24 may be further bonded to each other to form a ring, and wherein at least one of Rb1 and Rc1 is a substituted or unsubstituted aromatic or heteroaromatic group.
    Type: Application
    Filed: April 26, 2021
    Publication date: August 19, 2021
    Applicant: Mitsubishi Chemical Corporation
    Inventors: Kazuhiro NAGAYAMA, Oki IEMURA
  • Patent number: 11038126
    Abstract: Provided is an iridium complex compound represented by formula (1) below. Ir is an iridium atom. L is a bidentate ligand. A ring Cy1 is an aromatic or heteroaromatic ring including carbon atoms C1 and C2. A ring Cy2 is a heteroaromatic ring including a carbon atom C3 and a nitrogen atom N1. R1 and R2 are each a hydrogen atom or a substituent. a and b are maximum integer numbers of possible substituents on the ring Cy1 and the ring Cy2, respectively. m is 1 to 3, n is 0 to 2, and m+n=3. At least one R1 is represented by formula (2) below. R5 to R11 are each a hydrogen atom or a substituent. Rxl and RX2 are each an alkyl group or an aralkyl group.
    Type: Grant
    Filed: May 14, 2020
    Date of Patent: June 15, 2021
    Assignee: Mitsubishi Chemical Corporation
    Inventors: Kazuhiro Nagayama, Oki Iemura
  • Publication number: 20200317706
    Abstract: Provided is an iridium complex compound represented by formula (1) below. [Ir is an iridium atom. C1 to C6 are carbon atoms. N1 and N2 are nitrogen atoms. R1 to R4 are each a hydrogen atom or a substituent. a to d are maximum integer numbers of possible substituents on rings Cy1 to Cy4, respectively. m and n are each 1 or 2, and m+n=3. The ring Cy1 is represented by formula (2) or (2?) below. The ring Cy3 is an aromatic or heteroaromatic ring including the carbon atoms C4 and C5. The ring Cy4 is a heteroaromatic ring including the carbon atom C6 and the nitrogen atom N2.
    Type: Application
    Filed: April 20, 2020
    Publication date: October 8, 2020
    Applicant: MITSUBISHI CHEMICAL CORPORATION
    Inventors: Kazuhiro NAGAYAMA, Oki IEMURA
  • Publication number: 20200274078
    Abstract: Provided is an iridium complex compound represented by formula (1) below. Ir is an iridium atom. L is a bidentate ligand. A ring Cy1 is an aromatic or heteroaromatic ring including carbon atoms C1 and C2. A ring Cy2 is a heteroaromatic ring including a carbon atom C3 and a nitrogen atom N1. R1 and R2 are each a hydrogen atom or a substituent. a and b are maximum integer numbers of possible substituents on the ring Cy1 and the ring Cy2, respectively. m is 1 to 3, n is 0 to 2, and m+n=3. At least one R1 is represented by formula (2) below. R5 to R11 are each a hydrogen atom or a substituent. Rxl and RX2 are each an alkyl group or an aralkyl group.
    Type: Application
    Filed: May 14, 2020
    Publication date: August 27, 2020
    Applicant: Mitsubishi Chemical Corporation
    Inventors: Kazuhiro Nagayama, Oki Iemura
  • Patent number: 10600974
    Abstract: The object of the invention is to provide an iridium complex compound which emits red light with a high luminescent quantum yield, a process for producing the compound, an organic electroluminescent element which employs the iridium complex compound and has a high luminescent efficiency, a display device, and an illuminator.
    Type: Grant
    Filed: June 7, 2016
    Date of Patent: March 24, 2020
    Assignee: Mitsubishi Chemical Corporation
    Inventors: Koichi Ishibashi, Kazuhiro Nagayama, Hideji Komatsu
  • Publication number: 20180123054
    Abstract: The invention relates to a composition for organic electroluminescent element, which comprises: a solvent; and a compound group ? for organic electroluminescent element that is constituted of at least two kinds of compounds which each have a molecular weight of 3,000 or less and have a structure comprising a plurality of aromatic ring groups linked to each other, wherein the compound group ? comprises: a compound ?1; and another compound an satisfying a specific condition.
    Type: Application
    Filed: December 28, 2017
    Publication date: May 3, 2018
    Applicant: Mitsubishi Chemical Corporation
    Inventors: Hideki GOROHMARU, Tomomi OKAMOTO, Wataru SHIMIZU, Kazuhiro NAGAYAMA, Takashi OYA, Koichi ISHIBASHI, Ichiro IMADA
  • Patent number: 9899606
    Abstract: The invention relates to a composition for organic electroluminescent element, which comprises: a solvent; and a compound group ? for organic electroluminescent element that is constituted of at least two kinds of compounds which each have a molecular weight of 3,000 or less and have a structure comprising a plurality of aromatic ring groups linked to each other, wherein the compound group ? comprises: a compound ?1; and another compound ?n satisfying a specific condition.
    Type: Grant
    Filed: July 11, 2013
    Date of Patent: February 20, 2018
    Assignee: MITSUBISHI CHEMICAL CORPORATION
    Inventors: Hideki Gorohmaru, Tomomi Okamoto, Wataru Shimizu, Kazuhiro Nagayama, Takashi Oya, Koichi Ishibashi, Ichiro Imada
  • Patent number: 9799837
    Abstract: The present invention is to provide an iridium complex compound, which is soluble in an organic solvent, which can be stored for long periods without reprecipitation thereof and which secures a low driving voltage and a high luminescent efficiency of an organic electroluminescent element produced using the compound, to provide an organic electroluminescent element containing the compound and to provide a display and a lighting using the organic electroluminescent element. The present invention relates to the iridium complex compound having a specific chemical structure. Further, the invention also relates to the organic electroluminescent element produced using the compound, which requires a low operating voltage and has a long operating lifetime.
    Type: Grant
    Filed: July 14, 2014
    Date of Patent: October 24, 2017
    Assignee: MITSUBISHI CHEMICAL CORPORATION
    Inventors: Kazuhiro Nagayama, Hideji Komatsu, Akira Migita, Hideki Gorohmaru, Koichiro Iida, Takashi Oya, Koichi Ishibashi
  • Publication number: 20160293866
    Abstract: The object of the invention is to provide an iridium complex compound which emits red light with a high luminescent quantum yield, a process for producing the compound, an organic electroluminescent element which employs the iridium complex compound and has a high luminescent efficiency, a display device, and an illuminator.
    Type: Application
    Filed: June 7, 2016
    Publication date: October 6, 2016
    Applicant: Mitsubishi Chemical Corporation
    Inventors: Koichi ISHIBASHI, Kazuhiro NAGAYAMA, Hideji KOMATSU
  • Publication number: 20160043325
    Abstract: The invention relates to a composition for organic electroluminescent element, which comprises: a solvent; and a compound group ? for organic electroluminescent element that is constituted of at least two kinds of compounds which each have a molecular weight of 3,000 or less and have a structure comprising a plurality of aromatic ring groups linked to each other, wherein the compound group ? comprises: a compound ?1; and another compound ?n satisfying a specific condition.
    Type: Application
    Filed: July 11, 2013
    Publication date: February 11, 2016
    Inventors: Hideki GOROHMARU, Tomomi OKAMOTO, Wataru SHIMIZU, Kazuhiro NAGAYAMA, Takashi OYA, Koichi ISHIBASHI, lchiro IMADA
  • Publication number: 20150155502
    Abstract: The object of the present invention is to provide an iridium complex compound emitting red light, a composition comprising the iridium complex compound and a solvent, an organic electroluminescent element which is produced using the compound or the composition and has a long driving life and an excellent electronic durability, and a display device and lighting device using the organic electroluminescent element. The present invention relates to an iridium complex compound solvent having a 2-phenyl quinazoline framework and a specific substituent.
    Type: Application
    Filed: February 9, 2015
    Publication date: June 4, 2015
    Applicant: MITSUBISHI CHEMICAL CORPORATION
    Inventors: Koichi ISHIBASHI, Kazuhiro NAGAYAMA, Hideji KOMATSU, Koichiro IIDA
  • Publication number: 20140319505
    Abstract: The present invention is to provide an iridium complex compound, which is soluble in an organic solvent, which can be stored for long periods without reprecipitation thereof and which secures a low driving voltage and a high luminescent efficiency of an organic electroluminescent element produced using the compound, to provide an organic electroluminescent element containing the compound and to provide a display and a lighting using the organic electroluminescent element. The present invention relates to the iridium complex compound having a specific chemical structure. Further, the invention also relates to the organic electroluminescent element produced using the compound, which requires a low operating voltage and has a long operating lifetime.
    Type: Application
    Filed: July 14, 2014
    Publication date: October 30, 2014
    Applicant: MITSUBISHI CHEMICAL CORPORATION
    Inventors: Kazuhiro NAGAYAMA, Hideji KOMATSU, Akira MIGITA, Hideki GOROHMARU, Koichiro IIDA, Takashi OYA, Koichi ISHIBASHI
  • Publication number: 20080281073
    Abstract: It is to provide a high purity oxydiphthalic anhydride with which, in production of a polyimide containing an oxydiphthalic anhydride, one having sufficiently high strength can be produced, and an industrially simple process for producing it. A high purity oxydiphthalic anhydride, which has a content of fine insoluble particles having a projected area diameter of from 5 to 20 ?m, of at most 3,000 particles per 1 g, and has a light transmittance at 400 nm of at least 98.5% in a light path length of 1 cm when dissolved in acetonitrile at a concentration of 4 g/L.
    Type: Application
    Filed: December 7, 2005
    Publication date: November 13, 2008
    Applicant: MITSUBISHI CHEMICAL CORPORATION
    Inventors: Kazuhiro Nagayama, Toshiharu Yokoyama, Jun Takahara, Makoto Nitta, Hiroshi Mikami