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).

  • Patent number: 8795849
    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: Grant
    Filed: August 6, 2009
    Date of Patent: August 5, 2014
    Assignee: Mitsubishi Chemical Corporation
    Inventors: Toshiyuki Urano, Masayoshi Yabe, Koichiro Iida, Kumiko Takenouchi
  • Patent number: 8734095
    Abstract: A gas turbine that can effectively cool an axial cavity between a stator blade and a rotor blade and a blade-end surface is provided. In a gas turbine in which a blade-count difference between stator-blade segments of a second-stage stator blade and a third-stage stator blade is set to zero, a relative position between the second-stage stator blade and the third-stage stator blade in the circumferential direction is set by clocking so that a wake flow produced by the stator-blade segments of the second-stage stator blade is guided to the leading edges of the stator-blade segments of the third-stage stator blade within a range of 0% to 15% of the length in a span direction from a hub side of the stator-blade segments of the third-stage stator blade.
    Type: Grant
    Filed: March 16, 2010
    Date of Patent: May 27, 2014
    Assignee: Mitsubishi Heavy Industries, Ltd.
    Inventor: Koichiro Iida
  • Patent number: 8692234
    Abstract: An object of the invention is to provide a polymer compound having a high hole transport capacity, excellent in electrochemical stability, and suitable to film formation according to a wet film formation method. Another object of the invention is to provide an organic electroluminescence element having a high current efficiency, a low drive voltage, and a long derive lifetime. The polymer compound has a crosslinking group bonding to the arylamine moiety in the repeating unit via at least one single bond therebetween.
    Type: Grant
    Filed: April 1, 2009
    Date of Patent: April 8, 2014
    Assignee: Mitsubishi Chemical Corporation
    Inventors: Koichiro Iida, Kyoko Endo, Yanjun Li, Kazuki Okabe, Masayoshi Yabe
  • Patent number: 8653508
    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: February 13, 2009
    Date of Patent: February 18, 2014
    Assignee: Mitsubishi Chemical Corporation
    Inventors: Kyoko Endo, Koichiro Iida, Kazuki Okabe, Hideki Gorohmaru
  • Patent number: 8618530
    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: February 13, 2009
    Date of Patent: December 31, 2013
    Assignee: Mitsubishi Chemical Corporation
    Inventors: Kyoko Endo, Koichiro Iida, Kazuki Okabe, Hideki Gorohmaru
  • Publication number: 20130334512
    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: Application
    Filed: July 15, 2013
    Publication date: December 19, 2013
    Applicant: MITSUBISHI CHEMICAL CORPORATION
    Inventors: Tomohiro ABE, Futoshi Tanaka, Kazuki Okabe, Atsushi Takahashi, Koichiro Iida, Ichiro Imada
  • Patent number: 8610112
    Abstract: A subject for the invention is to provide a charge-transporting polymer having high hole-transporting ability and excellent solubility and film-forming properties and a composition for organic electroluminescent element which contains the charge-transporting polymer. Another subject for the invention is to provide an organic electroluminescent element which has a high current efficiency and high driving stability. The charge-transporting polymer comprises a group represented by the following formula (1) as a side chain: wherein in formula (1), the benzocyclobutene ring may have one or more substituents. The substituents may be bonded to each other to form a ring. The spacer represents a group which links the benzocyclobutene ring to the main chain of the charge-transporting polymer through three or more single bonds.
    Type: Grant
    Filed: August 10, 2009
    Date of Patent: December 17, 2013
    Assignee: Mitsubishi Chemical Corporation
    Inventors: Koichiro Iida, Haruhiko Kusaka, Kyoko Endo, Yanjun Li, Kazuki Okabe
  • Patent number: 8581241
    Abstract: An object of the invention is to provide a polymer compound having a high hole transport capacity, excellent in electrochemical stability, and suitable to film formation according to a wet film formation method. Another object of the invention is to provide an organic electroluminescence element having a high current efficiency, a low drive voltage, and a long derive lifetime. The polymer compound has a crosslinking group bonding to the arylamine moiety in the repeating unit via at least one single bond therebetween.
    Type: Grant
    Filed: September 14, 2012
    Date of Patent: November 12, 2013
    Assignee: Mitsubishi Chemical Corporation
    Inventors: Koichiro Iida, Kyoko Endo, Yanjun Li, Kazuki Okabe, Masayoshi Yabe
  • Publication number: 20130200337
    Abstract: The present invention relates to a polymer comprising a repeating unit represented by the specific general formula (1) and a cross-linkable group.
    Type: Application
    Filed: August 10, 2012
    Publication date: August 8, 2013
    Applicant: MITSUBISHI CHEMICAL CORPORATION
    Inventors: Koichiro IIDA, Hideki Gorohmaru, Yanjun Li, Tatsushi Baba, Tomomi Okamoto
  • Patent number: 8427046
    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: May 16, 2006
    Date of Patent: April 23, 2013
    Assignee: Mitsubishi Chemical Corporation
    Inventors: Masayoshi Yabe, Masayo Fugono, Koichiro Iida, Masako Takeuchi, Tomoyuki Ogata
  • Publication number: 20130020562
    Abstract: An object of the invention is to provide a polymer compound having a high hole transport capacity, excellent in electrochemical stability, and suitable to film formation according to a wet film formation method. Another object of the invention is to provide an organic electroluminescence element having a high current efficiency, a low drive voltage, and a long derive lifetime. The polymer compound has a crosslinking group bonding to the arylamine moiety in the repeating unit via at least one single bond therebetween.
    Type: Application
    Filed: September 14, 2012
    Publication date: January 24, 2013
    Inventors: Koichiro IIDA, Kyoko Endo, Yanjun Li, Kazuki Okabe, Masayoshi Yabe
  • Publication number: 20120224974
    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: Application
    Filed: January 19, 2011
    Publication date: September 6, 2012
    Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventor: Koichiro Iida
  • Patent number: 8252432
    Abstract: A composition for preparing a charge-transport film is provided. The composition comprises, at least: a charge-transporting compound having an ionization potential of between 4.5 and 5.5 ev; and an ionic compound selected from the group consisting of the compounds of formulae (1)-(3), wherein R11, R21 and R31 are each independently an organic group bound to A1-A3, via a carbon atom; R12, R22, R23 and R32-R34 are each independently an arbitrary group. Two or more neighboring groups of R11-R34 may combine to form a ring. A1-A3 are each an element of the third and subsequent periods in the periodic table. A1 is an element of group 17 of the long form periodic table; A2 is an element of group 16 and A3 is an element of group 15. Z1n1?-Z3n3? are counter anions and n1-n3 are an ionic valency of the counter anion.
    Type: Grant
    Filed: September 15, 2010
    Date of Patent: August 28, 2012
    Assignee: Mitsubishi Chemical Corporation
    Inventors: Koichiro Iida, Tomoyuki Ogata, Asato Tanaka
  • Publication number: 20120205635
    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: February 27, 2012
    Publication date: August 16, 2012
    Applicant: MITSUBISHI CHEMICAL CORPORATION
    Inventors: Tatsushi BABA, Koichiro IIDA
  • Publication number: 20120193617
    Abstract: A subject for the invention is to provide compounds where a film formation can be made by a wet film formation method, a heating temperature at the film formation is low, the film formed therefrom has high stability, and the other layers can be laminated thereon by a wet film formation method or another method. The compounds are usable as a material for electronic device which decreases little in charge transport efficiency or luminescent efficiency and which have excellent driving stability. The invention resides in a compound and a polymer which are characterized by having a elimination group of a specific structure and in an organic compound characterized by having a elimination group having a low elimination temperature.
    Type: Application
    Filed: April 16, 2012
    Publication date: August 2, 2012
    Applicant: MITSUBISHI CHEMICAL CORPORATION
    Inventors: Toshiyuki Urano, Toshimitsu Nakai, Koichiro Iida, Yanjun Li, Tatsushi Baba
  • Patent number: 8222807
    Abstract: To provide an organic electroluminescence device that can suppress rise in the driving voltage at the time of constant-current energization and degradation in brightness at the time of energization, and thus excels in its driving lifetime, the organic electroluminescence device comprises: a substrate; an anode and a cathode overlying the substrate; and a plurality of organic layers disposed between the anode and the cathode, and the plurality of organic layers comprise at least: a first layer formed by means of polymerization of a polymerizable compound; and a second layer disposed adjacently to the first layer and containing a polymerization initiator.
    Type: Grant
    Filed: February 15, 2008
    Date of Patent: July 17, 2012
    Assignee: Mitsubishi Chemical Corporation
    Inventors: Tomoyuki Ogata, Kazuki Okabe, Koichiro Iida, Masayoshi Yabe
  • Publication number: 20120121394
    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: Application
    Filed: December 7, 2009
    Publication date: May 17, 2012
    Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventor: Koichiro Iida
  • Patent number: 8178215
    Abstract: An organic compound and a charge-transporting material which are excellent in both a hole-transporting property and an electron-transporting property and have excellent electrical oxidation/reduction durability and a high triplet excitation level are provided, and an organic electroluminescent device which uses this organic compound and has high luminous efficiency and high driving stability and long lifetime is provided, wherein the organic compound has two or more partial structures represented by the following Formula (I): wherein Cz denotes a carbazolyl group; Z is as defined; and Q denotes a direct link connected to G present in a moiety represented by the following Formula (II): wherein B1 ring is a six-membered aromatic heterocycle containing n N atoms as a hetero atom; n is an integer of 1 to 3; G is as defined; and m is an integer of 3 to 5.
    Type: Grant
    Filed: December 5, 2005
    Date of Patent: May 15, 2012
    Assignees: Pioneer Corporation, Mitsubishi Chemical Corporation
    Inventors: Masayoshi Yabe, Hideki Sato, Masako Takeuchi, Masayo Fugono, Koichiro Iida
  • Patent number: 8177499
    Abstract: In the turbine blades set to a large outflow angle, the performance of the entire turbine is improved by reducing a cross flow generated on the turbine end wall and a whirling up of flow on the suction side of a blade irrespective of the difference of the blade shape, thereby reducing the loss. There is provided a turbine blade cascade end wall positioned on the hub-side and/or the tip side of a plurality of turbine blades arranged in an annular shape, including a first projection having a ridge extending downward from the trailing edge of a turbine blade toward the downstream side gently at the beginning and steeply at the end, and along the suction side of an adjacent turbine blade.
    Type: Grant
    Filed: January 30, 2007
    Date of Patent: May 15, 2012
    Assignee: Mitsubishi Heavy Industries, Ltd.
    Inventor: Koichiro Iida
  • Patent number: 8168307
    Abstract: An organic compound is represented by following Formula (I): wherein Cz1 and Cz2 may be the same as or different from each other and each represent a carbazolyl group; Q1 and Q2 may be the same as or different from each other and each represent a direct bond or an arbitrary linkage group; and Cz1, Cz2, Q1, Q2, Ring B1 and Ring B2 may each be substituted. The organic compound and charge transporting material show both excellent hole transporting ability and excellent electron transporting ability and have satisfactory durability against electric oxidation/reduction and a high triplet excitation level. An organic electroluminescent device using the organic compound emits light with a high efficiency and is highly stably driven.
    Type: Grant
    Filed: January 19, 2006
    Date of Patent: May 1, 2012
    Assignees: Pioneer Corporation, Mitsubishi Chemical Corporation
    Inventors: Koichiro Iida, Hideki Sato, Masayoshi Yabe, Masako Takeuchi