Patents by Inventor Shigeru Kusano
Shigeru Kusano 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).
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Patent number: 8053092Abstract: An object of the present invention is to provide a host compound in an emission layer, which has a high excited triplet level and completely confines triplet excitons of an phosphorescence-emitting substance. The invention relates to a compound containing an m-carbazolylphenyl group, which is represented by the following general formula (1): wherein A represents a nitrogen atom, an amino group to which a substituted or unsubstituted aromatic hydrocarbon group is bonded, a substituted or unsubstituted aromatic hydrocarbon group, a substituted or unsubstituted aromatic heterocyclic group, or a substituted or unsubstituted condensed polycyclic aromatic group; n represents an integer of 2 to 4; R1 and R2 may be the same or different and represent each an arbitrary substituent; and m and o represent each an integer of 0 to 4.Type: GrantFiled: December 12, 2006Date of Patent: November 8, 2011Assignee: Hodogaya Chemical Co., Ltd.Inventors: Tetsuzo Miki, Norimasa Yokoyama, Shigeru Kusano, Chihaya Adachi
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Publication number: 20110175079Abstract: The present invention provides an organic compound having excellent properties, which is excellent in electron-injection/transport performance, has hole-blocking ability and is high stability in a thin-film state, as a material for an organic electroluminescence device having a high efficiency and a high durability, and provides is an organic electroluminescence device having a high efficiency and a high durability using the compound. The present invention relates to a compound having a substituted anthracene ring structure and a pyridoindole ring structure represented by general formula (1); and an organic electroluminescence device having a pair of electrodes and at least one organic layer interposed between the electrodes in which the at least one organic layer contains the compound.Type: ApplicationFiled: September 18, 2009Publication date: July 21, 2011Applicant: HODOGAYA CHEMICAL CO., LTD.Inventors: Norimasa Yokoyama, Shuichi Hayashi, Sawa Izumi, Naoaki Kabasawa, Shigeru Kusano
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Publication number: 20110073852Abstract: A problem of the invention is to provide an organic EL device having a high efficiency, a low driving voltage and a long life, by combining various materials for organic EL device, which are excellent in an injection or transportation performance of holes or electrons, and in stability and durability in a thin film, so as to enable the respective materials to effectively reveal their characteristics. The invention relates to an organic electroluminescent device including at least an anode electrode, a hole-injecting layer, a hole-transporting layer, an emitting layer, an electron-transporting layer and a cathode electrode in this order, in which the hole-injecting layer contains an arylamine compound having, in its molecule, a structure in which three or more triphenylamine structures are connected through a single bond or a hetero atom-free divalent group; and the hole-transporting layer contains an arylamine compound having two triphenylamine structures in its molecule.Type: ApplicationFiled: May 15, 2009Publication date: March 31, 2011Applicant: Hodogaya Chemical Co., Ltd.Inventors: Norimasa Yokoyama, Shigeru Kusano, Shuichi Hayashi
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Patent number: 7902402Abstract: The present invention provides a method for producing a tetramine compound represented by formula (1): wherein R1, R2 and R3, which may be the same or different, each represents a hydrogen atom, a tertiary alkyl group having 4 to 8 carbon atoms, an unsubstituted aryl group or an aryl group substituted with a tertiary alkyl group having 4 to 8 carbon atoms, and n represents 3 or 4.Type: GrantFiled: January 15, 2010Date of Patent: March 8, 2011Assignee: Hodogaya Chemical Co., Ltd.Inventors: Shigeru Kusano, Makoto Koike, Atsushi Takesue, Mitsutoshi Anzai
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Patent number: 7897816Abstract: The present invention provides a tetramine compound represented by the following general formula (1): wherein R1, R2 and R3, which may be the same or different, each represents a hydrogen atom, a tertiary alkyl group having 4 to 8 carbon atoms, an unsubstituted aryl group or an aryl group substituted with a tertiary alkyl group having 4 to 8 carbon atoms, and n represents 3 or 4.Type: GrantFiled: January 15, 2010Date of Patent: March 1, 2011Assignee: Hodogaya Chemical Co., Ltd.Inventors: Shigeru Kusano, Makoto Koike, Atsushi Takesue, Mitsutoshi Anzai
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Publication number: 20110006291Abstract: Objects of the present invention are to provide an organic compound having excellent properties, which is excellent in electron-injecting/transporting performances, has hole-blocking ability and is highly stable in a thin-film state, as a material for an organic electroluminescent device having a high efficiency and a high durability; and to provide an organic electroluminescent device having a high efficiency and a high durability using the compound.Type: ApplicationFiled: January 30, 2009Publication date: January 13, 2011Applicant: Hodogaya Chemical Co. Ltd.Inventors: Norimasa Yokoyama, Shuichi Hayashi, Sawa Izumi, Shigeru Kusano
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Publication number: 20100308322Abstract: Objects of the invention are to provide an organic compound having excellent properties, which is excellent in electron-injecting/transporting performance, has hole-blocking ability, and is highly stable in a thin-film state, as a material for an organic electroluminescent devices having a high-efficiency and a high durability; and to provide an organic electroluminescent device having a high-efficiency and a high durability using the compound. The invention relates to: a compound having a pyridoindole ring structure bonded with a substituted pyridyl group, which is represented by the following general formula (1); and an organic electroluminescent device comprising a pair of electrodes and at least one organic layer interposed between the electrodes, wherein the at least one organic layer contains the compound.Type: ApplicationFiled: February 13, 2009Publication date: December 9, 2010Applicant: Hodogaya Chemical Co,. Ltd.Inventors: Norimasa Yokoyama, Shuichi Hayashi, Sawa Izumi, Shigeru Kusano
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Patent number: 7807274Abstract: The present invention provides a tetramine compound represented by the following general formula (1): wherein R1, R2 and R3, which may be the same or different, each represents a hydrogen atom, a tertiary alkyl group having 4 to 8 carbon atoms, an unsubstituted aryl group or an aryl group substituted with a tertiary alkyl group having 4 to 8 carbon atoms, and n represents 3 or 4. According to the invention, there can be provided a material suitable as a material for an organic EL element requiring luminous stability at the time of high temperature driving which has been the largest problem of the conventional organic EL element. Further, an organic EL element containing the above-mentioned tetramine compound and a method for producing the above-mentioned tetramine compound are also disclosed.Type: GrantFiled: December 24, 2004Date of Patent: October 5, 2010Assignee: Hodogaya Chemical Co., Ltd.Inventors: Shigeru Kusano, Makoto Koike, Atsushi Takesue, Mitsutoshi Anzai
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Publication number: 20100230660Abstract: The present invention is to provide an organic compound having excellent characteristics as a material for an organic EL device having a high efficiency and a high durability, and to provide an organic EL device having a high efficiency and a high durability by using the compound.Type: ApplicationFiled: August 16, 2007Publication date: September 16, 2010Applicant: HODOGAYA CHEMICAL CO., LTD.Inventors: Norimasa Yokoyama, Shuichi Hayashi, Shigeru Kusano
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Publication number: 20100171080Abstract: The present invention provides a tetramine compound represented by the following general formula (1): wherein R1, R2 and R3, which may be the same or different, each represents a hydrogen atom, a tertiary alkyl group having 4 to 8 carbon atoms, an unsubstituted aryl group or an aryl group substituted with a tertiary alkyl group having 4 to 8 carbon atoms, and n represents 3 or 4.Type: ApplicationFiled: January 15, 2010Publication date: July 8, 2010Applicant: Hodogaya Chemical Co., Ltd.Inventors: Shigeru KUSANO, Makoto Koike, Atsushi Takesue, Mitsutoshi Anzai
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Publication number: 20100174115Abstract: The present invention provides a method for producing a tetramine compound represented by formula (1): wherein R1, R2 and R3, which may be the same or different, each represents a hydrogen atom, a tertiary alkyl group having 4 to 8 carbon atoms, an unsubstituted aryl group or an aryl group substituted with a tertiary alkyl group having 4 to 8 carbon atoms, and n represents 3 or 4.Type: ApplicationFiled: January 15, 2010Publication date: July 8, 2010Applicant: Hodogaya Chemical Co., Ltd.Inventors: Shigeru Kusano, Makoto Koike, Atsushi Takesue, Mitsutoshi Anzai
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Publication number: 20100123388Abstract: Objects of the present invention are to provide an organic compound having excellent properties, which is excellent in electron-injection/transport performances, has hole-blocking ability and is highly stable in a thin-film state, as a material for an organic electroluminescence device having a high efficiency and a high durability, and to provide an organic electroluminescence device having a high efficiency and a high durability using the compound. The invention relates to a compound having a substituted bipyridyl group and a pyridoindole ring structure connected with each other through a phenylene group, which is represented by the general formula (1), and an organic EL device comprising a pair of electrodes and at least one organic layer interposed between the electrodes, wherein the compound is used as a constituent material for the at least one organic layer.Type: ApplicationFiled: March 13, 2008Publication date: May 20, 2010Applicant: Hodogaya Chemical Co., Ltd.Inventors: Norimasa Yokoyama, Shuichi Hayashi, Shigeru Kusano, Makoto Nagaoka
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Publication number: 20090230849Abstract: An object of the invention is to provide an organic compound having excellent characteristics as a material for highly efficient and highly durable organic EL devices, and also to provide a highly efficient and highly durable organic EL device. This invention relates to a compound represented by the general formula (1) having an oxadiazole ring structure bonded with an aromatic heterocycle, and to an organic electroluminescence device containing the compound: wherein Ar represents a substituted or unsubstituted aromatic hydrocarbon group, a substituted or unsubstituted aromatic heterocyclic group, or a substituted or unsubstituted condensed polycyclic aromatic group; A represents a substituted or unsubstituted aromatic heterocyclic group; and n represents an integer of 1 to 3.Type: ApplicationFiled: September 12, 2006Publication date: September 17, 2009Applicant: Hodogaya Chemical Co., Ltd.Inventors: Tetsuzo Miki, Norimasa Yokoyama, Shuichi Hayashi, Shigeru Kusano, Yoshio Taniguchi, Musubu Ichikawa
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Publication number: 20090108750Abstract: An object of the present invention is to provide an organic compound having excellent characteristics, which is excellent in electron injection/transport performance, has hole blocking property and is high in stability in a thin film state, as a material for an organic EL device having high efficiency and high durability, and further to provide an organic EL device having high efficiency and high durability using this compound. The invention relates to a compound represented by general formula (1), which has a thiadiazole ring structure substituted with a substituted pyridyl group, and to an organic EL device having a pair of electrodes and at least one organic layer interposed therebetween, wherein the compound is contained as a constituent material of at least one of the organic layer(s).Type: ApplicationFiled: March 20, 2007Publication date: April 30, 2009Applicant: Hodogaya Chemical Co., Ltd.Inventors: Norimasa Yokoyama, Toru Akisada, Shigeru Kusano
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Publication number: 20090045726Abstract: An object of the present invention is to provide a host compound in an emission layer, which has a high excited triplet level and completely confines triplet excitons of an phosphorescence-emitting substance. The invention relates to a compound containing an m-carbazolylphenyl group, which is represented by the following general formula (1): wherein A represents a nitrogen atom, an amino group to which a substituted or unsubstituted aromatic hydrocarbon group is bonded, a substituted or unsubstituted aromatic hydrocarbon group, a substituted or unsubstituted aromatic heterocyclic group, or a substituted or unsubstituted condensed polycyclic aromatic group; n represents an integer of 2 to 4; R1 and R2 may be the same or different and represent each an arbitrary substituent; and m and o represent each an integer of 0 to 4.Type: ApplicationFiled: December 12, 2006Publication date: February 19, 2009Applicant: Hodogaya Chemical Co., Ltd.Inventors: Tetsuzo Miki, Norimasa Yokoyama, Shigeru Kusano, Chihaya Adachi
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Patent number: 7402701Abstract: An organic electroluminescent device comprising a light-emitting layer between a pair of electrodes, the light-emitting layer comprising a mixture of a hole-transporting material consisting of a tertiary amine compound, an electron-transporting material and a light-emitting additive material, in which the tertiary amine compound has two or more oxidation potentials determined by a cyclic voltammetry wherein a potential difference between the first oxidation potential and the second oxidation potential in the oxidation potentials is 0.22V or more, and a glass transition temperature of at least 100° C., and the electron-transporting material has a glass transition temperature of at least 100° C.Type: GrantFiled: July 31, 2007Date of Patent: July 22, 2008Assignees: DENSO CORPORATION, Hodogaya Chemical Co., Ltd.Inventors: Tetsuya Kato, Kazushige Kojima, Shigeru Kusano, Makoto Koike, Atsushi Takesue, Mitsutoshi Anzai
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Publication number: 20070293704Abstract: An organic electroluminescent device comprising a light-emitting layer between a pair of electrodes, the light-emitting layer comprising a mixture of a hole-transporting material consisting of a tertiary amine compound, an electron-transporting material and a light-emitting additive material, in which the tertiary amine compound has two or more oxidation potentials determined by a cyclic voltammetry wherein a potential difference between the first oxidation potential and the second oxidation potential in the oxidation potentials is 0.22V or more, and a glass transition temperature of at least 100° C., and the electron-transporting material has a glass transition temperature of at least 100° C.Type: ApplicationFiled: July 31, 2007Publication date: December 20, 2007Applicants: DENSO CORPORATION, HODOGAYA CHEMICAL CO., LTD.Inventors: Tetsuya Kato, Kazushige Kojima, Shigeru Kusano, Makoto Koike, Atsushi Takesue, Mitsutoshi Anzai
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Publication number: 20070149816Abstract: The present invention provides a tetramine compound represented by the following general formula (1): wherein R1, R2 and R3, which may be the same or different, each represents a hydrogen atom, a tertiary alkyl group having 4 to 8 carbon atoms, an unsubstituted aryl group or an aryl group substituted with a tertiary alkyl group having 4 to 8 carbon atoms, and n represents 3 or 4. According to the invention, there can be provided a material suitable as a material for an organic EL element requiring luminous stability at the time of high temperature driving which has been the largest problem of the conventional organic EL element. Further, an organic EL element containing the above-mentioned tetramine compound and a method for producing the above-mentioned tetramine compound are also disclosed.Type: ApplicationFiled: December 24, 2004Publication date: June 28, 2007Inventors: Shigeru Kusano, Makoto Koike, Atsushi Takesue, Mitsutoshi Anzai