Patents by Inventor Akihiro Senoo
Akihiro Senoo 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: 7977869Abstract: An organic luminescent device having organic-compound layers is provided which takes on luminous hues with very good purity and has optical power with high efficiency, high luminance and a long life. At least one of the organic-compound layers contains a benzo[k]fluoranthene compound represented by the following general formula (1): wherein R1 is a group selected from the group consisting of alkyl, aralkyl and a heterocyclic group which may be substituted, and R1's may be the same or different; R10 to R20 are each independently a group selected from the group consisting of hydrogen, halogen, alkyl, aralkyl, phenyl, a condensed bicyclic aromatic group and a heterocyclic group which may be substituted; and a is an integer of 0 or more to 9 or less.Type: GrantFiled: July 18, 2007Date of Patent: July 12, 2011Assignee: Canon Kabushiki KaishaInventors: Akihito Saitoh, Masanori Muratsubaki, Satoshi Igawa, Hiroki Ohrui, Chika Negishi, Masashi Hashimoto, Takao Takiguchi, Akihiro Senoo, Shinjiro Okada
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Patent number: 7960039Abstract: An amino compound for an organic light-emitting device of general formula [1]: wherein X1 is bonded to the pair of fluorenyl groups at meta-positions to each other and is substituted or unsubstituted aromatic ring, fused polycyclic ring, or heterocyclic ring; Y1 and Y2 are each substituted or unsubstituted alkyl, aryl, or heterocyclic and are the same or different; Z1 to Z4 are each hydrogen, halogen, or substituted or unsubstituted alkyl, aralkyl, alkenyl, alkynyl, alkoxy, aryl, or heterocyclic and are the same or different; R1 to R4 are each hydrogen, halogen, or substituted or unsubstituted alkyl, aryl, or heterocyclic and are the same or different; a and d are each 1 to 4; and b and c are each 1 to 3.Type: GrantFiled: March 23, 2007Date of Patent: June 14, 2011Assignee: Canon Kabushiki KaishaInventors: Shigemoto Abe, Akihiro Senoo, Naoki Yamada, Chika Negishi
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Patent number: 7952269Abstract: An organic light-emitting device is provided which has an optical output with a high efficiency, a high luminance and a long life and which includes a pair of electrodes including an anode and a cathode, and at least one layer comprising an organic compound provided between the pair of electrodes, wherein at least one layer having a light-emitting region of the at least one layer comprising the organic compound comprises a first compound represented by the general formula (1): and a second compound having a bandgap larger than a bandgap of the first compound.Type: GrantFiled: November 16, 2005Date of Patent: May 31, 2011Assignee: Canon Kabushiki KaishaInventors: Keiji Okinaka, Masataka Yashima, Akihito Saitoh, Naoki Yamada, Akihiro Senoo, Kazunori Ueno
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Publication number: 20110124059Abstract: According to the present invention, it is possible to provide a microorganism belonging to the genus Corynebacterium, wherein the activity of (1) a protein having the amino acid sequence shown by any one of SEQ ID NO:1 to 3, or (2) a protein having a homology of 80% or more to the amino acid sequence shown by any one of SEQ ID NO:1 to 3, and having substantially the same activity as the activity of a protein having the amino acid sequence shown by any one of SEQ ID NO:1 to 3, has been reduced or lost, and wherein the activity of (3) a protein having the amino acid sequence shown by SEQ ID NO:4, or (4) a protein having a homology of 80% or more to the amino acid sequence shown by SEQ ID NO:4, and having substantially the same activity as the activity of a protein having the amino acid sequence shown by SEQ ID NO:4, has been reduced or lost, and a process for producing L-glutamine using the microorganism and the like.Type: ApplicationFiled: August 30, 2007Publication date: May 26, 2011Applicant: Kyowa Hakko Bio Co., Ltd.Inventors: Yugo Adachi, Mikiro Hayashi, Akihiro Senoo, Yoshiyuki Yonetani, Shin-ichi Hashimoto
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Publication number: 20110095284Abstract: Provided are a novel fused polycyclic aromatic compound having a fluoranthene skeleton and an organic light emitting device having high efficiency and high durability. The organic light emitting device includes a fused polycyclic aromatic compound represented by the following general formula [1] or [2], and the organic light emitting device includes an anode, a cathode, an organic compound layer interposed between the anode and the cathode, in which at least one layer of the organic compound layers includes at least one kind of the fused polycyclic aromatic compound represented by the following general formula [1] or [2].Type: ApplicationFiled: July 9, 2009Publication date: April 28, 2011Applicant: CANON KABUSHIKI KAISHAInventors: Taiki Watanabe, Koichi Suzuki, Kazunori Ueno, Koichi Nakata, Takayuki Ito, Hiroki Ohrui, Akihiro Senoo, Naoki Yamada
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Publication number: 20110089822Abstract: It is an object of the present invention to provide an organic light emitting device having a long-life optical output. The organic light emitting device according to the present invention is provided with an emission layer including at least a host material, a light emitting material, and another material, wherein the another material has a smaller ionization potential than and almost the same hole mobility as or a greater hole mobility than an ionization potential and a hole mobility of a compound which forms an emission layer-side-interface.Type: ApplicationFiled: December 21, 2010Publication date: April 21, 2011Applicant: CANON KABUSHIKI KAISHAInventors: Keiji Okinaka, Akihito Saitoh, Naoki Yamada, Masataka Yashima, Koichi Suzuki, Akihiro Senoo
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Patent number: 7919199Abstract: It is an object of the present invention to provide an organic light emitting device having a long-life optical output. The organic light emitting device according to the present invention is provided with an emission layer including at least a host material, a light emitting material, and another material, wherein the another material has a smaller ionization potential than and almost the same hole mobility as or a greater hole mobility than an ionization potential and a hole mobility of a compound which forms an emission layer-side-interface.Type: GrantFiled: August 24, 2009Date of Patent: April 5, 2011Assignee: Canon Kabushiki KaishaInventors: Keiji Okinaka, Akihito Saitoh, Naoki Yamada, Masataka Yashima, Koichi Suzuki, Akihiro Senoo, Kazunori Ueno
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Patent number: 7883786Abstract: The invention provides a novel compound used as a material for organic light-emitting elements, and an organic light-emitting element which has highly efficient and highly luminescent optical power and is superior in durability. The organic light-emitting element includes an anode and a cathode, and a layer which contains an organic compound and is held between the anode and the cathode.Type: GrantFiled: April 1, 2008Date of Patent: February 8, 2011Assignee: Canon Kabushiki KaishaInventors: Shigemoto Abe, Akihiro Senoo, Jun Kamatani, Satoshi Igawa, Naoki Yamada
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Patent number: 7875368Abstract: Provided is a novel heterocyclic compound which is useful as a material for an organic electroluminescent device. The heterocyclic compound is represented by the general formula [I]: wherein X represents a nitrogen atom or a carbon atom; Y represents O or S; R1 and R2 each represent, independently of one another, a group selected from the group consisting of a substituted or unsubstituted alkyl group and the like; a represents 0 or more and 3 or less; b represents 0 or more and 3 or less; and Ar1 represents a substituted or unsubstituted heterocyclic ring or the like; and n represents an integer of 2 to 10.Type: GrantFiled: November 14, 2007Date of Patent: January 25, 2011Assignee: Canon Kabushiki KaishaInventors: Hiroki Ohrui, Akihiro Senoo, Tetsuya Kosuge, Taiki Watanabe
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Patent number: 7833634Abstract: Provided a novel 1,8-naphthyridine compound represented by the following general formula [I]: wherein R1 to R6 each represent a hydrogen atom; an alkyl group, a halogen atom; a trifluoromethyl group; and a cyano group, and may be the same as or different from one another, and that at least two of R1 to R6 each represent an aralkyl group, an aryl group, a heterocyclic group, a condensed polycyclic aromatic group, a condensed polycyclic heterocyclic group and an aryloxy group which may be substituted; and a substituted amino group. The 1,8-naphthyridine is employed in an organic compound layer provided between a pair of electrodes in an organic light-emitting device.Type: GrantFiled: June 20, 2006Date of Patent: November 16, 2010Assignee: Canon Kabushiki KaishaInventors: Koichi Suzuki, Hiroshi Tanabe, Chika Negishi, Taiki Watanabe, Akihiro Senoo, Kazunori Ueno
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Patent number: 7794857Abstract: The present invention has an object to provide an organic light emitting device array whose power source voltage is not raised. The difference in ionization potential between a host material and a hole transport layer and the difference in electron affinity between a host material and of an electron transport layer are set in a favorable range for all organic light emitting devices which emit light of different colors.Type: GrantFiled: March 9, 2007Date of Patent: September 14, 2010Assignee: Canon Kabushiki KaishaInventors: Hiroshi Tanabe, Akihiro Senoo, Akihito Saitoh
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Patent number: 7794855Abstract: A high-performance organic light-emitting element and a novel organic compound realizing the above element are provided. A fluoranthene compound having a specific structure and an organic light-emitting element using the same are provided.Type: GrantFiled: April 20, 2007Date of Patent: September 14, 2010Assignee: Canon Kabushiki KaishaInventors: Hironobu Iwawaki, Chika Negishi, Shinjiro Okada, Takao Takiguchi, Akihiro Senoo, Masashi Hashimoto
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Patent number: 7785719Abstract: The present invention provides a fluorene compound having a novel substituent, and the fluorene compound is represented by the following formula [1]:Type: GrantFiled: November 23, 2005Date of Patent: August 31, 2010Assignee: Canon Kabushiki KaishaInventors: Naoki Yamada, Akihito Saitoh, Keiji Okinaka, Masataka Yashima, Akihiro Senoo, Kazunori Ueno
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Patent number: 7709104Abstract: There is provided an aminoanthryl derivative-substituted pyrene compound represented by the following general formula (1). The compound is useful as a compound for an organic light-emitting device exhibiting highly pure luminescent color, and an optical output with high efficiency, high luminance, and long life.Type: GrantFiled: November 17, 2005Date of Patent: May 4, 2010Assignee: Canon Kabushiki KaishaInventors: Akihito Saitoh, Keiji Okinaka, Naoki Yamada, Masataka Yashima, Akihiro Senoo, Kazunori Ueno
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Patent number: 7691491Abstract: Novel monoaminofluorene compounds are provided, and organic light-emitting devices which exhibit good luminescence hue of extremely high purity and have optical output with high luminescence efficiency, high luminance and longer operating life are provided using the compounds.Type: GrantFiled: August 12, 2003Date of Patent: April 6, 2010Assignee: Canon Kabushiki KaishaInventors: Akihito Saitoh, Mizuho Hiraoka, Koichi Suzuki, Akihiro Senoo, Hiroshi Tanabe, Naoki Yamada, Chika Negishi
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Patent number: 7691492Abstract: A novel substituted fluorene compound is provided which is represented by the general formula [I]:Type: GrantFiled: April 11, 2005Date of Patent: April 6, 2010Assignee: Canon Kabushiki KaishaInventors: Naoki Yamada, Akihito Saitoh, Keiji Okinaka, Koichi Suzuki, Akihiro Senoo
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Publication number: 20100019236Abstract: It is an object of the present invention to provide an organic light emitting device having a long-life optical output. The organic light emitting device according to the present invention is provided with an emission layer including at least a host material, a light emitting material, and another material, wherein the another material has a smaller ionization potential than and almost the same hole mobility as or a greater hole mobility than an ionization potential and a hole mobility of a compound which forms an emission layer-side-interface.Type: ApplicationFiled: August 24, 2009Publication date: January 28, 2010Applicant: CANON KABUSHIKI KAISHAInventors: Keiji Okinaka, Akihito Saitoh, Naoki Yamada, Masataka Yashima, Koichi Suzuki, Akihiro Senoo
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Patent number: 7632577Abstract: To provide an organic light-emitting device that exhibits the hue of light emission having extremely high purity and has a light output having high luminance and long life with a high degree of efficiency. The organic light-emitting device comprises at least a pair of electrodes consisting of an anode and a cathode and one or more organic compound-containing layers sandwiched between the pair of electrodes, wherein at least one of the above described organic compound-containing layers contains at least one compound selected from the group consisting of the compounds represented by the following general formula [1] and at least one compound selected from the group consisting of the compounds represented by the following general formula [2].Type: GrantFiled: August 26, 2003Date of Patent: December 15, 2009Assignee: Canon Kabushiki KaishaInventors: Akihito Saitoh, Mizuho Hiraoka, Koichi Suzuki, Akihiro Senoo, Hiroshi Tanabe, Naoki Yamada, Chika Negishi
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Publication number: 20090302758Abstract: To provide an organic light emitting device having high efficiency and high luminance by making a contrivance to suppress the leakage of an electron or of an exciton, an organic light emitting device of the present invention includes two hole transporting layers having tertiary amine compounds different from each other in structure.Type: ApplicationFiled: April 19, 2007Publication date: December 10, 2009Applicant: CANON KABUSHIKI KAISHAInventors: Akihito Saitoh, Keiji Okinaka, Satoshi Igawa, Jun Kamatani, Naoki Yamada, Masashi Hashimoto, Masanori Muratsubaki, Takao Takiguchi, Akihiro Senoo, Shinjiro Okada, Minako Nakasu
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Publication number: 20090278118Abstract: There are provided a novel benzofluoranthene compound and an organic light-emitting device which uses the benzofluoranthene compound, gives a blue emission hue with extremely good purity, and has an optical output with a high efficiency, a high luminance, and a long life. Specifically, there are provided a benzofluoranthene compound represented by the general formula shown below and an organic light-emitting device including a pair of electrodes including an anode and a cathode one of which is a transparent or translucent electrode material, and an organic compound layer disposed between the pair of electrodes and including a material for an organic light-emitting device containing the benzofluoranthene compound. In the general formula (1), one of X1, X2, X3, X4, X5, and X6 represents a substituted or unsubstituted fused heterocyclic group having four or less rings, and the others of X1, X2, X3, X4, X5, and X6 each represent a hydrogen atom.Type: ApplicationFiled: December 12, 2007Publication date: November 12, 2009Applicant: CANON KABUSHIKI KAISHAInventors: Hiroki Ohrui, Akihito Saitoh, Chika Negishi, Hironobu Iwawaki, Masanori Muratsubaki, Hiroyuki Tomono, Tetsuya Kosuge, Akihiro Senoo