Patents by Inventor Koichiro Iida

Koichiro Iida 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: 20160372676
    Abstract: The object of the present invention is to provide a polymer capable of being insolubilized at a low temperature in a short time, having a high hole injecting and transporting ability and a high durability, and a composition for organic electroluminescent element comprising the polymer. The polymer of the present invention comprises a specific crosslinkable group.
    Type: Application
    Filed: August 31, 2016
    Publication date: December 22, 2016
    Applicant: Mitsubishi Chemical Corporation
    Inventors: Koichiro IIDA, Yanjun Li, Tomokazu Umemoto, Qi Gao, Hideki Goromaru
  • Patent number: 9391278
    Abstract: The present invention provides a polymer compound and charge transporting polymer having a high hole injecting and transporting performance, a composition for organic electroluminescent element containing the charge transporting polymer, and an organic electroluminescent element. The polymer compound of the present invention comprises a specific group having a benzocyclobutene ring.
    Type: Grant
    Filed: December 18, 2014
    Date of Patent: July 12, 2016
    Assignee: MITSUBISHI CHEMICAL CORPORATION
    Inventors: Koichiro Iida, Tatsushi Baba, Yanjun Li
  • Patent number: 9365767
    Abstract: A composition for an organic electroluminescent device is a composition for forming an organic light emitting layer of an organic electroluminescent device by wet coating process. The composition contains a phosphorescent material, a charge transport material, and a solvent, in which the phosphorescent material and the charge transport material are each an unpolymerized organic compound, and the first oxidation potential of the phosphorescent material ED+, the first reduction potential of the phosphorescent material ED?, the first oxidation potential of the charge transporting material ET+, and the first reduction potential of the charge transporting material ET? satisfy the following condition: ET?+0.1?ED?<ET+?ED+?0.1 or ED?+0.1?ET?<ED+?ET+?0.1.
    Type: Grant
    Filed: February 14, 2006
    Date of Patent: June 14, 2016
    Assignee: Mitsubishi Chemical Corporation
    Inventors: Masayoshi Yabe, Tomoyuki Ogata, Hideki Sato, Koichiro Iida, Asato Tanaka, Mitsuru Tanamura, Yuichiro Kawamura, Hironori Ishikawa, Kazuki Okabe
  • Patent number: 9349961
    Abstract: A polymer comprising a repeating unit represented by the following formula (1) and a cross-linkable group wherein Ar11 to Ar17, R11, R12 and r are as defined; and an organic electroluminescent element containing at least one organic layer containing a network polymer formed by cross-linking the polymer, the layer being a hole injection layer or a hole transporting layer.
    Type: Grant
    Filed: August 10, 2012
    Date of Patent: May 24, 2016
    Assignee: MITSUBISHI CHEMICAL CORPORATION
    Inventors: Koichiro Iida, Hideki Gorohmaru, Yanjun Li, Tatsushi Baba, Tomomi Okamoto
  • Patent number: 9299933
    Abstract: The present invention relates to a polymer comprising a repeating unit containing a specific partial structure and a repeating unit containing a crosslinking group, a composition for an organic electroluminescent element comprising the polymer, and an organic electroluminescent element comprising an organic layer formed using the composition for an organic electroluminescent element by a wet film formation method.
    Type: Grant
    Filed: August 25, 2014
    Date of Patent: March 29, 2016
    Assignee: MITSUBISHI CHEMICAL CORPORATION
    Inventors: Tatsushi Baba, Yanjun Li, Koichiro Iida, Hideki Gorohmaru, Emi Nakamoto, Takayuki Shouda
  • Publication number: 20160017734
    Abstract: An axial flow rotating machine having: a rotor that is provided with a plurality of rotor blades; a stator provided with a plurality of stator blades; an axial flow rotating portion formed by the rotor and the stator; and a diffuser connected to the axial flow rotating portion on the downstream side of the axial flow rotating portion. The final blade portion inner-circumferential inner wall, which is a portion of the inner-circumferential inner wall of the axial flow rotating portion, is formed so that the diameter thereof at the trailing edge position of the final blade is smaller than the diameter at the leading edge position of the final blade. In addition, the diameter of all or a portion of the diffuser inner-circumferential inner wall decreases in a direction of a first side in the axial direction, the first side being the downstream side.
    Type: Application
    Filed: March 20, 2014
    Publication date: January 21, 2016
    Inventors: Kazuya NISHIMURA, Eisaku ITO, Koichiro IIDA, Kentaro AKIMOTO
  • Patent number: 9214633
    Abstract: An object of the present invention is to provide a conjugated polymer which has a high hole transportability and is excellent in solubility and depositability. Another object of the present invention is to provide an organic electroluminescence element which is capable of low voltage driving and has a high luminous efficiency and drive stability. The conjugated polymer of the present invention is a conjugated polymer containing a specific structure as the repeating unit, where the conjugated polymer contains an insolubilizing group as a substituent, the weight average molecular weight (Mw) is 20,000 or more and the dispersity (Mw/Mn) is 2.40 or less.
    Type: Grant
    Filed: October 28, 2013
    Date of Patent: December 15, 2015
    Assignee: MITSUBISHI CHEMICAL CORPORATION
    Inventors: Kyoko Endo, Koichiro Iida, Kazuki Okabe, Hideki Gorohmaru
  • Patent number: 9194239
    Abstract: A rotor blade includes a blade main body having a proximal end connected to the blade root, and a tip shroud connected to a tip end of the blade main body so as to constitute a part of an annular shroud, a tip end side of a leading edge of the blade main body is made continuous to an outside surface of the tip shroud via a curved portion curved toward a trailing edge, fillets are provided between the tip end of the blade main body and an inside surface of the tip shroud, and the curved portion is located closer to the leading edge than the fillets, whereby the turbine rotor blade and the turbo machine can realize weight reduction and suppress performance degradation.
    Type: Grant
    Filed: January 19, 2011
    Date of Patent: November 24, 2015
    Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventor: Koichiro Iida
  • 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
  • Patent number: 9028980
    Abstract: The present invention relates to an organic electroluminescent element which comprises two or more hole injection/transport layers each formed by a wet film formation method using a composition containing, as a hole-injecting/transporting compound, an arylamine polymer compound that has a repeating unit having a triarylamine structure therein, in which when the number of atoms present on the path which is the smallest in the number of atoms present thereon, of the paths which each connect the nonaromatic tertiary nitrogen atoms contained in any two triarylamine structures present in each polymer compound, is taken as N: the minimum number of atoms between nitrogen atoms in the compound, then the N in each hole injection/transport layer is in a specific state.
    Type: Grant
    Filed: July 15, 2013
    Date of Patent: May 12, 2015
    Assignee: Mitsubishi Chemical Corporation
    Inventors: Tomohiro Abe, Futoshi Tanaka, Kazuki Okabe, Atsushi Takahashi, Koichiro Iida, Ichiro Imada
  • Publication number: 20150102334
    Abstract: The present invention provides a polymer compound and charge transporting polymer having a high hole injecting and transporting performance, a composition for organic electroluminescent element containing the charge transporting polymer, and an organic electroluminescent element. The polymer compound of the present invention comprises a specific group having a benzocyclobutene ring.
    Type: Application
    Filed: December 18, 2014
    Publication date: April 16, 2015
    Applicant: MITSUBISHI CHEMICAL CORPORATION
    Inventors: Koichiro IIDA, Tatsushi BABA, Yanjun LI
  • Publication number: 20150079714
    Abstract: A composition for use in an organic device, useful in producing an organic device, such as an organic electroluminescent element, having high operation stability, is a composition for use in an organic device that contains at least two cross-linking compounds, at least two of the cross-linking compounds having different numbers of cross-linking groups. A polymer film produced by forming a film of the composition for use in an organic device and then polymerizing the cross-linking compounds. An organic electroluminescent element that includes an anode and a cathode on a substrate and at least one organic layer disposed between the anode and the cathode, wherein at least one of the at least one organic layer is a layer that is produced by forming a film of the composition for use in an organic device and then polymerizing the cross-linking compounds.
    Type: Application
    Filed: November 24, 2014
    Publication date: March 19, 2015
    Applicant: MITSUBISHI CHEMICAL CORPORATION
    Inventors: Kazuki OKABE, Tomoyuki OGATA, Koichiro IIDA
  • Publication number: 20150041797
    Abstract: The present invention relates to a polymer comprising a repeating unit containing a specific partial structure and a repeating unit containing a crosslinking group, a composition for an organic electroluminescent element comprising the polymer, and an organic electroluminescent element comprising an organic layer formed using the composition for an organic electroluminescent element by a wet film formation method.
    Type: Application
    Filed: August 25, 2014
    Publication date: February 12, 2015
    Applicant: MITSUBISHI CHEMICAL CORPORATION
    Inventors: Tatsushi BABA, Yanjun Li, Koichiro Iida, Hideki Gorohmaru, Emi Nakamoto, Takayuki Shouda
  • Patent number: 8920126
    Abstract: An object is to provide a turbine and a turbine rotor blade in which it is possible to ensure the strength of the turbine rotor blade and to improve the performance thereof. The turbine includes: rotor blades that rotate about a rotational axis in a main flow channel of a casing; stator vanes that are disposed in the casing; a tip shroud that is disposed at a radially-outward end of each of the rotor blades and whose length in the direction along the rotational axis is reduced as the distance from the rotor blade increases; and a cavity portion that is formed at a position in the casing facing the rotor blades and in which the tip shroud is accommodated. An inclination angle of the inner periphery of the tip shroud is larger than an average inclination angle that is an inclination angle of the inner periphery of the casing, averaged from the trailing edge of the stator vanes disposed at the upstream side of a main flow to the cavity portion disposed at the downstream side of the main flow.
    Type: Grant
    Filed: December 7, 2009
    Date of Patent: December 30, 2014
    Assignee: Mitsubishi Heavy Industries, Ltd.
    Inventor: Koichiro Iida
  • Publication number: 20140361285
    Abstract: The present invention provides an organic electroluminescent device exhibiting a long life, a high luminance, and a high efficiency. An organic electroluminescent device comprising on a substrate an anode, a hole transport layer, an organic light-emitting layer, and a cathode, wherein the organic light-emitting layer contains an organic compound having a pyridine ring, a pyrazine ring, or a triazine ring as a partial structure and the hole transport layer contains a monoamine compound represented by the following formula (I): wherein R1 to R9 represent a hydrogen atom, an aryl group, or an alkyl group; R1 to R9 may be the same or different from each other; and R1 to R9 may further have an aryl group or an alkyl group as a substituent in the case where R1 to R9 are an aryl group or an alkyl group.
    Type: Application
    Filed: August 26, 2014
    Publication date: December 11, 2014
    Applicant: Mitsubishi Chemical Corporation
    Inventors: Masayoshi YABE, Masayo Fugono, Koichiro Iida, Masako Takeuchi, Tomoyuki Ogata
  • Publication number: 20140330025
    Abstract: A monoamine compound characterized by being represented by the following general formula (1). [In general formula (1), R1 to R3 each independently represent a phenyl group which may have a substituent in at least one of o- and m-positions, in which the substituent may be bonded to each other to form a cyclic structure. R1 to R3 are a group different from each other.
    Type: Application
    Filed: July 17, 2014
    Publication date: November 6, 2014
    Applicant: MITSUBISHI CHEMICAL CORPORATION
    Inventors: Tatsushi BABA, Koichiro IIDA
  • Patent number: 8877355
    Abstract: The present invention provides an organic electroluminescent device exhibiting a long life, a high luminance, and a high efficiency. An organic electroluminescent device comprising on a substrate an anode, a hole transport layer, an organic light-emitting layer, and a cathode, wherein the organic light-emitting layer contains an organic compound having a pyridine ring, a pyrazine ring, or a triazine ring as a partial structure and the hole transport layer contains a monoamine compound represented by the following formula (I): wherein R1 to R9 represent a hydrogen atom, an aryl group, or an alkyl group; R1 to R9 may be the same or different from each other; and R1 to R9 may further have an aryl group or an alkyl group as a substituent in the case where R1 to R9 are an aryl group or an alkyl group.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: November 4, 2014
    Assignee: Mitsubishi Chemical Corporation
    Inventors: Masayoshi Yabe, Masayo Fugono, Koichiro Iida, Masako Takeuchi, Tomoyuki Ogata
  • 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: 20140299864
    Abstract: A polymer, a luminescent material, and the likes are provided, wherein a film can be formed by a wet film-forming method, the film formed has a high stability, and is capable of being laminated with other layers by a wet film-forming method or another method, which are less decrease in charge transportation efficiency or luminescent efficiency, and attain an excellent driving stability. The polymer has a thermally dissociable and soluble group.
    Type: Application
    Filed: June 20, 2014
    Publication date: October 9, 2014
    Applicant: Mitsubishi Chemical Corporation
    Inventors: Toshiyuki URANO, Masayoshi Yabe, Koichiro IIDA, Kumiko Takenouchi
  • Patent number: 8828558
    Abstract: A monoamine compound of formula (1): wherein R1 to R3 each independently represent a phenyl group which may have one or more substituents, wherein at least one of said substituents is in the ortho or meta positions and wherein said substituents may be bonded to each other to form a cyclic structure, with the proviso that none of R1, R2 and R3 is a group which is the same as the other.
    Type: Grant
    Filed: February 27, 2012
    Date of Patent: September 9, 2014
    Assignee: Mitsubishi Chemical Corporation
    Inventors: Tatsushi Baba, Koichiro Iida