Patents by Inventor Makoto Nagaoka
Makoto Nagaoka 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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Publication number: 20140124756Abstract: A compound having an indolocarbazole ring structure is represented by the following general formula (1), and is used as a material for forming a highly efficient and highly durable organic electroluminescent device. The compound features excellent hole injection/transport capability, has electron blocking power and is highly stable in the form of a thin film. wherein, A is a divalent aromatic hydrocarbon group or aromatic heterocyclic group, Ar1 to Ar4 are monovalent aromatic hydrocarbon groups or aromatic heterocyclic groups, and R1 to R9 are hydrogen atoms, deuterium atoms, fluorine atoms, chlorine atoms, cyano groups, nitro groups, alkyl groups, cycloalkyl groups, alkenyl groups, alkyloxy groups, cycloalkyloxy groups, aromatic hydrocarbon groups, aromatic heterocyclic groups or aryloxy groups.Type: ApplicationFiled: February 14, 2012Publication date: May 8, 2014Applicant: HODOGAYA CHEMICAL CO., LTD.Inventors: Norimasa Yokoyama, Makoto Nagaoka, Sawa Izumi, Hiroshi Ookuma, Shuichi Hayashi
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Publication number: 20140042425Abstract: An organic compound with characteristics excelling in hole-injecting/transporting performance and having an electron blocking ability, a highly stable thin-film state, and excellent heat resistance is provided as material for an organic electroluminescent device of high efficiency and high durability, and the organic electroluminescent device of high efficiency and high durability is provided using this compound. The compound of a general formula (Chemical Formula 1) having a substituted acridan ring structure is used as a constituent material of at least one organic layer in the organic electroluminescent device that includes a pair of electrodes and one or more organic layers sandwiched between the pair of electrodes.Type: ApplicationFiled: April 24, 2012Publication date: February 13, 2014Applicant: HODOGAYA CHEMICAL CO., LTD.Inventors: Norimasa Yokoyama, Makoto Nagaoka, Naoaki Kabasawa, Eiji Takahashi
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Patent number: 8642189Abstract: The invention provides an organic compound which shows an excellent electron-injecting/transporting performance, has a hole-blocking ability and shows a high stability as a film, that is, having excellent characteristics as a material for organic electroluminescent device having high efficiency and high durability; and provides an organic EL device comprising the compound and having high efficiency and high durability.Type: GrantFiled: February 25, 2009Date of Patent: February 4, 2014Assignees: Hodogaya Chemical Co., Ltd., Shinshu University, National University CorporationInventors: Norimasa Yokoyama, Shuichi Hayashi, Makoto Nagaoka, Yoshio Taniguchi, Musubu Ichikawa
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Publication number: 20130126856Abstract: An organic compound with excellent characteristics excelling in hole-injecting/transporting performance and having electron blocking ability, high stability in a thin-film state and high luminous efficiency is provided as material for an organic electroluminescent device. The compound of a general formula (1) having an indenocarbazole ring structure is used as a constituent material of at least one organic layer in the organic electroluminescent device that includes a pair of electrodes and one or more organic layers sandwiched between the pair of electrodes.Type: ApplicationFiled: July 29, 2011Publication date: May 23, 2013Applicant: HODOGAYA CHEMICAL CO., LTD.Inventors: Norimasa Yokoyama, Makoto Nagaoka, Kazunori Togashi, Kouki Kase, Eiji Takahashi
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Publication number: 20130112950Abstract: There is provided an organic compound of excellent characteristics that exhibits excellent hole-injecting/transporting performance and has high triplet exciton confining capability with an electron blocking ability, and that has high stability in the thin-film state and high luminous efficiency. The compound is used to provide a high-efficiency, high-durability organic electroluminescent device, particularly a phosphorescent organic electroluminescent device. The present invention is a compound of the following general formula having a carbazole ring structure. The compound is used as a constituent material of at least one organic layer in an organic electroluminescent device that includes a pair of electrodes, and one or more organic layers sandwiched between the pair of electrodes.Type: ApplicationFiled: June 30, 2011Publication date: May 9, 2013Applicant: HODOGAYA CHEMICAL CO., LTD.Inventors: Norimasa Yokoyama, Makoto Nagaoka, Naoaki Kabasawa, Sawa Izumi, Eiji Takahashi
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Publication number: 20130075715Abstract: An organic compound with characteristics excelling in hole-injecting/transporting performance and having an electron blocking ability, a highly stable thin-film state, and excellent heat resistance is provided as material for an organic electroluminescent device of high efficiency and high durability, and the organic electroluminescent device of high efficiency and high durability is provided using this compound. The compound of a general formula (Chemical Formula 1) having a substituted acridan ring structure is used as a constituent material of at least one organic layer in the organic electroluminescent device that includes a pair of electrodes and one or more organic layers sandwiched between the pair of electrodes.Type: ApplicationFiled: June 3, 2011Publication date: March 28, 2013Applicant: HODOGAYA CHEMICAL CO., LTD.Inventors: Norimasa Yokoyama, Makoto Nagaoka, Naoaki Kabasawa, Eiji Takahashi
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Publication number: 20120292609Abstract: There is provided an organic compound of excellent characteristics that exhibits excellent hole-injecting/transporting performance and has an electron blocking ability and a highly stable thin-film state with excellent heat resistance. The compound of the present invention is an arylamine compound having a triphenylamine structure. The arylamine compound is used as a constituent material of at least one organic layer in an organic electroluminescent device that includes a pair of electrodes, and one or more organic layers sandwiched between the pair of electrodes.Type: ApplicationFiled: January 25, 2011Publication date: November 22, 2012Applicant: Hodogaya Chemical Co., Ltd.Inventors: Norimasa Yokoyama, Makoto Nagaoka, Kouki Kase, Shingo Ozawa, Shigeru Kusano
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Publication number: 20120273767Abstract: A high-efficiency, high-durability organic electroluminescent device, particularly a phosphorescent organic electroluminescent device is provided by using an organic compound of excellent characteristics that exhibits excellent hole-injecting/transporting performance and has high triplet exciton confining capability with an electron blocking ability, and that has high stability in the thin-film state and high luminous efficiency. The organic electroluminescent device includes a pair of electrodes, and a plurality of organic layers sandwiched between the pair of electrodes and including a light emitting layer and an electron blocking layer, wherein a compound of the following general formula (1) having a carbazole ring structure is used as a constituent material of the electron blocking layer and the light emitting layer.Type: ApplicationFiled: October 22, 2010Publication date: November 1, 2012Applicant: HODOGAYA CHEMICAL CO., LTD.Inventors: Norimasa Yokoyama, Makoto Nagaoka, Kazunori Togashi, Shigeru Kusano, Eiji Takahashi
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Patent number: 8252431Abstract: An organic compound is provided having excellent electron-injection/transport performance, hole-blocking ability, and high stability in a thin-film state. An organic electroluminescence device having a high efficiency and a high durability is provided, using the compound. The compound has a substituted bipyridyl group and a pyridoindole ring structure connected with each other through a phenylene group, is of formula (1). The organic EL device has a pair of electrodes and at least one organic layer interposed between the electrodes, wherein the compound is a constituent material for an organic layer therein.Type: GrantFiled: March 13, 2008Date of Patent: August 28, 2012Assignee: Hodogaya Chemical Co., Ltd.Inventors: Norimasa Yokoyama, Shuichi Hayashi, Shigeru Kusano, Makoto Nagaoka
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Publication number: 20120205642Abstract: A high-efficiency, high-durability organic electroluminescent device, particularly a phosphorescent organic electroluminescent device is provided by using an organic compound of excellent characteristics that exhibits excellent hole-injecting/transporting performance and has high triplet exciton confining capability with an electron blocking ability, and that has high stability in the thin-film state and high luminous efficiency. The organic electroluminescent device includes a pair of electrodes, and a plurality of organic layers sandwiched between the pair of electrodes and including a phosphorescent light-emitting material-containing light emitting layer and a hole transport layer, wherein a compound of the following general formula (1) having a carbazole ring structure is used as a constituent material of the hole transport layer.Type: ApplicationFiled: October 22, 2010Publication date: August 16, 2012Applicant: HODOGAYA CHEMICAL CO., LTDInventors: Norimasa Yokoyama, Makoto Nagaoka, Kazunori Togashi, Shigeru Kusano, Eiji Takahashi
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Publication number: 20120175599Abstract: [Problem] An organic compound of excellent characteristics is provided that exhibits excellent hole-injecting/transporting performance with electron blocking ability, and that has high stability in the thin-film state and high luminous efficiency, the organic compound being provided as material for an organic electroluminescent device having high efficiency and high durability. The invention also provides a high-efficient, high-durable organic electroluminescent device using the compound. [Means for Resolution] The compound is of the following general formula having a carbazole ring structure. The organic electroluminescent device includes a pair of electrodes, and one or more organic layers sandwiched between the pair of electrodes, and the compound is used as a constituent material of at least one organic layer.Type: ApplicationFiled: August 25, 2010Publication date: July 12, 2012Applicant: Hodogaya Chemical Co., Ltd.Inventors: Norimasa Yokoyama, Makoto Nagaoka, Kazunori Togashi, Shigeru Kusano
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Publication number: 20110257404Abstract: [Problem] To provide a method of producing an aromatic amino compound by using a primary or secondary amine compound and a halogenated aromatic compound as starting materials, and relying upon the Ullmann reaction, the method being capable of obtaining the highly pure aromatic amino compound in high yields and inexpensively.Type: ApplicationFiled: January 25, 2010Publication date: October 20, 2011Applicant: HODOGAYA CHEMICAL CO., LTD.Inventors: Norimasa Yokoyama, Makoto Nagaoka, Kazunori Togashi
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Patent number: 7977671Abstract: The present invention relates to a compound having an oxadiazole ring structure having a substituted pyridyl group connected thereto, represented by the following general formula (1). According to the present invention, it becomes possible to provide an organic compound having excellent characteristic of high stability in a thin film state, and the emission efficiency and durability of conventional organic EL devices can be remarkably improved.Type: GrantFiled: November 19, 2009Date of Patent: July 12, 2011Assignee: Hodogaya Chemical Co., Ltd.Inventors: Tetsuzo Miki, Makoto Nagaoka, Shuichi Hayashi, Yoshio Taniguchi, Musubu Ichikawa
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Patent number: 7963029Abstract: A jig for holding and conveyance includes a plate having a weak-adherence adhesive pattern on a surface and a printed circuit board having a conductive portion and a non-conductive portion on the surface of an insulating substrate. The weak-adherence adhesive pattern is formed at a position corresponding to the non-conductive portion. Alternatively, the weak-adherence adhesive pattern subjected to surface roughening is formed on a surface of the weak-adhesive layer at a position corresponding to the conductive portion.Type: GrantFiled: July 15, 2003Date of Patent: June 21, 2011Assignee: Daisho Denshi Co., Ltd.Inventors: Atsushi Ishikawa, Osamu Deguchi, Katsuyoshi Kameyama, Makoto Nagaoka, Akihiro Kimura
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Publication number: 20110001129Abstract: [Problem] To provide an organic compound which shows an excellent electron-injecting/transporting performance, has a hole-blocking ability and shows a high stability as a film, that is, having excellent characteristics as a material for organic electroluminescent device having high efficiency and high durability; and to provide an organic EL device comprising the compound and having high efficiency and high durability. [Means for Solution] A substituted bipyridyl compound represented by the general formula (1); and an organic electroluminescent device comprising a pair of electrodes and at least one organic layer sandwiched between then, wherein the compound is used as the constitutive material of at least one organic layer.Type: ApplicationFiled: February 25, 2009Publication date: January 6, 2011Applicants: HODOGAYA CHEMICAL CO., LTD., Shinshu University, National University CorporatioInventors: Norimasa Yokoyama, Shuichi Hayashi, Makoto Nagaoka, Yoshio Taniguchi, Musubu Ichikawa
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Patent number: 7812341Abstract: The present invention relates to a compound having an oxadiazole ring structure having a substituted pyridyl group connected thereto, represented by the following general formula (1). According to the present invention, it becomes possible to provide an organic compound having excellent characteristic of high stability in a thin film state, and the emission efficiency and durability of conventional organic EL devices can be remarkably improved.Type: GrantFiled: March 25, 2005Date of Patent: October 12, 2010Assignee: Hodogaya Chemical Co., Ltd.Inventors: Tetsuzo Miki, Makoto Nagaoka, Shuichi Hayashi, Yoshio Taniguchi, Musubu Ichikawa
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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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Patent number: 7712684Abstract: A fuel injection valve which injects fuel from a nozzle hole includes a cavitation generation flow path in which a cavitation bubble is generated in fuel flowing inside the injection valve, and a bubble storage flow path which is connected to the cavitation generation flow path and the nozzle hole and which stores the cavitation bubble generated in the cavitation generation flow path. A fuel containing the cavitation bubble stored in the bubble storage flow path is injected from the nozzle hole so that atomization of an injected fuel spray is enhanced.Type: GrantFiled: December 15, 2005Date of Patent: May 11, 2010Assignee: Kabushiki Kaisha Toyota Chuo KenkyushoInventors: Ryo Masuda, Kiyomi Kawamura, Makoto Nagaoka
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Publication number: 20100090588Abstract: 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 using the compound.Type: ApplicationFiled: August 16, 2007Publication date: April 15, 2010Applicants: Hodogaya Chemical Co., Ltd., Shinshu Univ., Nat. Univ CorpInventors: Norimasa Yokoyama, Toru Akisada, Makoto Nagaoka, Yoshio Taniguchi, Musubu Ichikawa
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Publication number: 20100066244Abstract: The present invention relates to a compound having an oxadiazole ring structure having a substituted pyridyl group connected thereto, represented by the following general formula (1). According to the present invention, it becomes possible to provide an organic compound having excellent characteristic of high stability in a thin film state, and the emission efficiency and durability of conventional organic EL devices can be remarkably improved.Type: ApplicationFiled: November 19, 2009Publication date: March 18, 2010Applicants: Hodogaya Chemical Co., Ltd., Shinshu UniversityInventors: Tetsuzo Miki, Makoto Nagaoka, Shuichi Hayashi, Yoshio Taniguchi, Musubu Ichikawa