Patents by Inventor Daisaku Tanaka
Daisaku Tanaka 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: 20180134952Abstract: An organic luminescent material suitable for color conversion material used for a liquid crystal display or LED lighting, excellent in luminous efficiency and durability, to which a pyrromethene-boron complex or a color conversion composition containing the pyrromethene-boron complex contributes, is provided.Type: ApplicationFiled: May 23, 2016Publication date: May 17, 2018Applicant: TORAY INDUSTRIES, INC.Inventors: Yasunori Ichihashi, Masaaki Umehara, Hirotoshi Sakaino, Daisaku Tanaka
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Patent number: 9935273Abstract: The purpose of the present invention is to provide an organic thin-film luminescent element which exhibits improved luminous efficiency, drive voltage and durability life. This fluoranthene derivative is characterized by having a specific structure that contains a fluoranthene skeleton.Type: GrantFiled: October 4, 2013Date of Patent: April 3, 2018Assignee: TORAY INDUSTRIES, INC.Inventors: Yasunori Ichihashi, Tsuyoshi Tominaga, Daisaku Tanaka, Takeshi Ikeda, Takeshi Arai, Atsushi Ikeda
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Publication number: 20180019407Abstract: Provided is a phenanthroline derivative having a specific structure. The phenanthroline derivative includes in a skeleton a substituted or unsubstituted heteroaryl group having electron-accepting nitrogen, and a substituted or unsubstituted aryl group having less than 20 ring-forming carbon atoms. The phenanthroline derivative is preferably used in electronic devices such as light emitting elements, photoelectric conversion elements, lithium ion batteries, fuel cells and transistors.Type: ApplicationFiled: January 20, 2016Publication date: January 18, 2018Applicant: TORAY INDUSTRIES, INCInventors: Hirotoshi Sakaino, Daisaku Tanaka
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Patent number: 9825239Abstract: The present invention provides an organic thin film light emitting device having high luminous efficiency and durable life realized by using a benzindolocarbazole derivative as represented by either general formula (1-1) or (1-2) given below: [Chemical compound 1] wherein R1 to R24 may be identical to or different from each other and are selected from the group consisting of a hydrogen atom, alkyl group, cycloalkyl group, heterocyclic group, amino group, alkenyl group, cycloalkenyl group, alkynyl group, alkoxy group, alkylthio group, aryl ether group, aryl thioether group, aryl group, heteroaryl group, halogen atom, carbonyl group, carboxyl group, oxycarbonyl group, carbamoyl group, silyl group, and —P(?O)R25R26; R25 and R26 represent either an aryl group or a heteroaryl group; R25 and R26 may be condensed to form a ring; L1 to L4 independently represent a single bond, a substituted or unsubstituted arylene group, or a substituted or unsubstituted heteroarylene group; and A1 to A4 independently represent an aType: GrantFiled: October 10, 2013Date of Patent: November 21, 2017Assignee: TORAY INDUSTRIES, INC.Inventors: Shinichi Matsuki, Daisaku Tanaka, Takeshi Ikeda, Atsushi Ikeda
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Publication number: 20170018733Abstract: An organic light-emitting element, including a substrate, a first electrode, a light-emitting layer containing one organic or more layer film, and a light-emitting element of a second electrode are disclosed. The light-emitting element is provided with a covering layer. For the organic material contained in covering layer, at least one point in the wavelength range between 430 nm and 460 nm the attenuation coefficient is greater than 0.10 while in the wavelength range of 460 nm to 500 nm its attenuation coefficient is 0.10 or below. The organic light-emitting element achieves high light-emitting efficiency and color reproducibility, and can be used as organic EL display, backlight source for liquid crystal display, illumination, light source for measurement devices, indication board or identification lamp etc.Type: ApplicationFiled: December 18, 2014Publication date: January 19, 2017Applicant: TORAY INDUSTRIES, INC.Inventors: Guangnan Jin, Peng Wang, Fangrong Xu, Lingzhi Zhong, Takeshi Ishigaki, Daisaku Tanaka, Takeshi Ikeda, Takuya Nishiyama
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Patent number: 9537107Abstract: Provided are a light emitting device material which contains a compound having a carbazole skeleton of a specific structure and which makes it possible to achieve a light emitting device having both high luminance efficiency and durability; and a light emitting device using the light emitting device material.Type: GrantFiled: March 9, 2012Date of Patent: January 3, 2017Assignee: TORAY INDUSTRIES, INC.Inventors: Kazumasa Nagao, Shinichi Matsuki, Daisaku Tanaka, Tsuyoshi Tominaga
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Publication number: 20160322606Abstract: Provided are an aromatic amine compound as represented by formula (1), used for improving light extraction efficiency and color purity of an organic light-emitting element, an organic light-emitting element material containing the aromatic amine compound, an organic light-emitting element covering layer material containing the aromatic amine compound, and an organic light-emitting element containing the aromatic amine compound. The organic light-emitting element achieves high light-emitting efficiency and color reproducibility. The organic light-emitting element can be used as organic EL display, backlight source for liquid crystal display, illumination, light source for measurement devices, indication board or identification lamp etc. The organic light-emitting element significantly improves light extraction efficiency and has superior color purity.Type: ApplicationFiled: December 18, 2014Publication date: November 3, 2016Applicant: TORAY INDUSTRIES, INC.Inventors: Guangnan Jin, Peng Wang, Fangrong Xu, Lingzhi Zhong, Takeshi Ishigaki, Daisaku Tanaka, Takeshi Ikeda, Takuya Nishiyama
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Publication number: 20150280140Abstract: The present invention provides an organic thin film light emitting device having high luminous efficiency and durable life realized by using a benzindolocarbazole derivative as represented by either general formula (1-1) or (1-2) given below: [Chemical compound 1] wherein R1 to R24 may be identical to or different from each other and are selected from the group consisting of a hydrogen atom, alkyl group, cycloalkyl group, heterocyclic group, amino group, alkenyl group, cycloalkenyl group, alkynyl group, alkoxy group, alkylthio group, aryl ether group, aryl thioether group, aryl group, heteroaryl group, halogen atom, carbonyl group, carboxyl group, oxycarbonyl group, carbamoyl group, silyl group, and —P(?O)R25R26; R25 and R26 represent either an aryl group or a heteroaryl group; R25 and R26 may be condensed to form a ring; L1 to L4 independently represent a single bond, a substituted or unsubstituted arylene group, or a substituted or unsubstituted heteroarylene group; and A1 to A4 independently represent anType: ApplicationFiled: October 10, 2013Publication date: October 1, 2015Applicant: TORAY INDUSTRIES, INC.Inventors: Shinichi Matsuki, Daisaku Tanaka, Takeshi Ikeda, Atsushi Ikeda
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Publication number: 20150280139Abstract: The purpose of the present invention is to provide an organic thin-film luminescent element which exhibits improved luminous efficiency, drive voltage and durability life. This fluoranthene derivative is characterized by having a specific structure that contains a fluoranthene skeleton.Type: ApplicationFiled: October 4, 2013Publication date: October 1, 2015Applicant: TORAY INDUSTRIES, INC.Inventors: Yasunori Ichihashi, Tsuyoshi Tominaga, Daisaku Tanaka, Takeshi Ikeda, Takeshi Arai, Atsushi Ikeda
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Patent number: 8916275Abstract: Disclosed is an organic electroluminescent element which has achieved both high luminous efficiency and low driving voltage by containing a light-emitting element material, which comprises a specific pyrene compound, in one of the layers that constitute the light-emitting element, preferably in a light-emitting layer or in an electron-transporting layer.Type: GrantFiled: March 25, 2010Date of Patent: December 23, 2014Assignee: Toray Industries, Inc.Inventors: Yohei Nakano, Kazunori Sugimoto, Kazumasa Nagao, Daisaku Tanaka, Tsuyoshi Tominaga
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Publication number: 20130341613Abstract: Provided are a light emitting device material which contains a compound having a carbazole skeleton of a specific structure and which makes it possible to achieve a light emitting device having both high luminance efficiency and durability; and a light emitting device using the light emitting device material.Type: ApplicationFiled: March 9, 2012Publication date: December 26, 2013Applicant: TORAY INDUSTRIES, INC.Inventors: Kazumasa Nagao, Shinichi Matsuki, Daisaku Tanaka, Tsuyoshi Tominaga
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Publication number: 20130264558Abstract: The present invention provides an organic thin-film light emitting device in which the luminance efficiency and durable life are improved while a low driving voltage is maintained by means of a light emitting device material that contains a compound represented by general formula (1).Type: ApplicationFiled: December 21, 2011Publication date: October 10, 2013Inventors: Shinichi Matsuki, Daisaku Tanaka, Tsuyoshi Tominaga
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Patent number: 8502201Abstract: The present invention relates to an organic thin-film light emitting device containing an organic compound represented by formula (1) and a donor compound. the light emitting device can achieve both of the low-voltage driving operation and high luminance efficiency. YA1-Ar)n1??(1) (Y represents either substituted or unsubstituted pyrene, or substituted or unsubstituted anthracene. A1 is selected from the group consisting of a single bond, an arylene group, and a hetero arylene group. Ar is selected from the group consisting of a carbazolyl group, a dibenzofuranyl group, and a dibenzothiophenyl group. These groups may be substituted or unsubstituted, and n1 is an integer of 1 to 3.).Type: GrantFiled: June 26, 2009Date of Patent: August 6, 2013Assignee: TORAY Industries, Inc.Inventors: Kazumasa Nagao, Takeshi Arai, Takeshi Ikeda, Tsuyoshi Tominaga, Daisaku Tanaka, Yasunori Ichihashi, Koji Ueoka
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Publication number: 20130105787Abstract: Provided is an organic thin film light emitting element which has achieved all of improved luminous efficiency, improved driving voltage and improved durability life. Specifically provided is a light emitting element which comprises a hole transport layer and an electron transport layer between a positive electrode and a negative electrode and emits light by means of electrical energy. The light emitting element is characterized in that: the hole transport layer of the light emitting element contains a compound represented by general formula (1); the electron transport layer contains a donor compound; and the donor compound is an alkali metal, an inorganic salt containing an alkali metal, a complex of an alkali metal and an organic substance, an alkaline earth metal, an inorganic salt containing an alkaline earth metal, or a complex of an alkaline earth metal and an organic substance.Type: ApplicationFiled: June 24, 2011Publication date: May 2, 2013Applicant: TORAY INDUSTRIES, INC.Inventors: Daisaku Tanaka, Shinichi Matsuki, Tsuyoshi Tominaga
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Publication number: 20120001161Abstract: Disclosed is an organic electroluminescent element which has achieved both high luminous efficiency and low driving voltage by containing a light-emitting element material, which comprises a specific pyrene compound, in one of the layers that constitute the light-emitting element, preferably in a light-emitting layer or in an electron-transporting layer.Type: ApplicationFiled: March 25, 2010Publication date: January 5, 2012Applicant: TORAY INDUSTRIES, INC.Inventors: Yohei Nakano, Kazunori Sugimoto, Kazumasa Nagao, Daisaku Tanaka, Tsuyoshi Tominaga
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Publication number: 20110121268Abstract: The present invention relates to an organic thin-film light emitting device containing an organic compound represented by formula (1) and a donor compound. the light emitting device ca achieve both of the low-voltage driving operation and high luminance efficiency. Y?A1-Ar)n1??(1) (Y represents either substituted or unsubstituted pyrene, or substituted or unsubstituted anthracene. A1 is selected from the group consisting of a single bond, an arylene group, and a hetero arylene group. Ar is selected from the group consisting of a carbazolyl group, a dibenzofuranyl group, and a dibenzothiophenyl group. These groups may be substituted or unsubstituted, and n1 is an integer of 1 to 3.Type: ApplicationFiled: June 26, 2009Publication date: May 26, 2011Inventors: Kazumasa Nagao, Takeshi Arai, Takeshi Ikeda, Tsuyoshi Tominaga, Daisaku Tanaka, Yasunori Ichihashi, Koji Ueoka
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Patent number: 7424391Abstract: A statistics system stores inputted statistical target information into storage. When each unit time period defined in a statistical calculation rule expires, the statistics system reads all pieces of statistical target information whose occurrence times are contained in the unit time period from storage, executes statistical calculation, and registers the statistical result to the statistical information in storage. When statistical target information is inputted, the statistics system sets a re-calculation flag to a unit time period including the occurrence time shown by the statistical target information among the respective unit time periods whose statistical results are registered in the statistical information.Type: GrantFiled: November 21, 2006Date of Patent: September 9, 2008Assignee: Fujitsu LimitedInventors: Makoto Muranaka, Hiroshi Miyakawa, Shinya Nishikawa, Maria Kita, Daisaku Tanaka
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Publication number: 20070223522Abstract: A statistics system stores inputted statistical target information into storage. When each unit time period defined in a statistical calculation rule expires, the statistics system reads all pieces of statistical target information whose occurrence times are contained in the unit time period from the storage, executes statistical calculation, and registers the statistical result to the statistical information in the storage. When statistical target information is inputted, the statistics system sets a re-calculation flag to a unit time period including the occurrence time shown by the statistical target information among the respective unit time periods whose statistical results are registered in the statistical information.Type: ApplicationFiled: November 21, 2006Publication date: September 27, 2007Inventors: Makoto Muranaka, Hiroshi Miyakawa, Shinya Nishikawa, Maria Kita, Daisaku Tanaka
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Patent number: 7241513Abstract: A fluorene compound represented by the following general formula [I]: is used to provide an organic luminescent device. Such a device has an optical output exhibiting a high luminance with an extremely high efficiency, and has an extremely high durability.Type: GrantFiled: August 12, 2003Date of Patent: July 10, 2007Assignee: Canon Kabushiki KaishaInventors: Koichi Suzuki, Mizuho Hiraoka, Akihiro Senoo, Naoki Yamada, Chika Negishi, Akihito Saitoh, Daisaku Tanaka, Ryoji Yashiro
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Publication number: 20040253389Abstract: A fluorene compound represented by the following general formula [I]: 1Type: ApplicationFiled: April 6, 2004Publication date: December 16, 2004Inventors: Koichi Suzuki, Mizuho Hiraoka, Akihiro Senoo, Naoki Yamada, Chika Negishi, Akihito Saitoh, Daisaku Tanaka, Ryoji Yashiro