Patents by Inventor Kazunori Sugimoto
Kazunori Sugimoto 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: 20160103171Abstract: A method for estimating a lifetime of an organic EL element comprising a pair of electrodes and an organic layer, comprises: a step of acquiring degradation data of characteristics of the element when a current density applied to the element and/or an atmosphere temperature of the element are/is changed; a step of calculating a fitting function of the degradation data and extracting a degradation parameter characterizing a degradation in the characteristics at the applied current density and/or the atmosphere temperature from the fitting function; a step of calculating a temperature dependence of the degradation parameter based on a temperature rise value of the organic layer upon light emission at the applied current density and/or the atmosphere temperature and setting a lifetime estimation formula of the element; and a step of estimating the lifetime of the organic EL element based on the lifetime estimation formula.Type: ApplicationFiled: November 28, 2014Publication date: April 14, 2016Applicant: Chemical materials Evaluation and REsearch BAseInventors: Tetsuo Tsutsui, Kazunori Sugimoto, Toshihiro Yoshioka, Satoshi Miyaguchi
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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: 20140061629Abstract: A light emitting device material containing a pyrene compound of general formula (1) and a light emitting device.Type: ApplicationFiled: November 6, 2013Publication date: March 6, 2014Applicant: Toray Industries, Inc.Inventors: Seiichiro MURASE, Kazumasa NAGAO, Kazunori SUGIMOTO
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Publication number: 20140027754Abstract: The present invention provides a light emitting device material containing a compound having a specific pyrene structure, capable of providing an organic thin-film light emitting device which enables high-efficiency light emission and low-voltage driving, and is also excellent in durability; and a light emitting device using the same.Type: ApplicationFiled: June 11, 2012Publication date: January 30, 2014Applicant: TORAY INDUSTRIES, INC.Inventors: Koji Ueoka, Kazumasa Nagao, Kazunori Sugimoto, Tsuyoshi Tominaga
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Patent number: 8610345Abstract: A light emitting device material containing a pyrene compound of formula (1) and a light emitting device.Type: GrantFiled: September 8, 2006Date of Patent: December 17, 2013Assignee: TORAY Industries, Inc.Inventors: Seiichiro Murase, Kazumasa Nagao, Kazunori Sugimoto, Takeshi Ishigaki, Takafumi Ogawa
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Publication number: 20120138907Abstract: Embodiments provide a light emitting device material characterized by containing an anthracene compound represented by the following general formula. where R19 to R37 are a hydrogen atom, alkyl group, cycloalkyl group, heterocyclic group or the like; n is 1 or 2; and A is a heteroarylene group or arylene group. Any one of the R19 to R27 and any one of the R28 to R37 are used for linking with A. The present teachings allow a light emitting device having high luminous efficiency and excellent durability.Type: ApplicationFiled: November 23, 2011Publication date: June 7, 2012Applicant: TORAY INDUSTRIES, INC.Inventors: Seiichiro MURASE, Daisuke KITAZAWA, Kazumasa NAGAO, Kazunori SUGIMOTO, Tsuyoshi TOMINAGA
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Patent number: 8183560Abstract: The present invention provides a light emitting device comprising at least an emissive layer existing between an anode and a cathode, which emits light by means of electric energy. The light emitting device contains a compound having a pyrromethene skeletal structure with a specific structure or a metal complex thereof and a naphthacene derivative, and thus the light emitting device has high luminance efficiency and excellent durability.Type: GrantFiled: October 15, 2007Date of Patent: May 22, 2012Assignee: TORAY Industries, Inc.Inventors: Takeshi Ikeda, Tsuyoshi Tominaga, Kazunori Sugimoto, Kazumasa Nagao
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Patent number: 8120022Abstract: Disclosed is a light emitting device material characterized by containing a specific fluorine compound. This light emitting device material enables to obtain a light emitting device having high luminous efficiency, excellent color purity and excellent durability. Also disclosed is a light emitting device using such a light emitting device material.Type: GrantFiled: July 16, 2008Date of Patent: February 21, 2012Assignee: Toray Industries, Inc.Inventors: Kazunori Sugimoto, Tsuyoshi Tominaga
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Patent number: 8114529Abstract: The invention provides a light emitting device having a low driving voltage and excellent durability by a material for a light emitting device expressed by the general formula (1): wherein each of R1, R2, R3, R4, R5 and R6 may be the same or different and is selected from hydrogen, an alkyl group, and an aryl group, A represents an n-valent aromatic hydrocarbon group, B represents an alkyl group or an aryl group, X represents carbon or nitrogen, n represents a natural number from 2 to 6, and n substituents having a phenanthroline skeleton or a benzoquinoline skeleton may be the same or different.Type: GrantFiled: August 23, 2004Date of Patent: February 14, 2012Inventors: Daisuke Kitazawa, Tsuyoshi Tominaga, Mariko Sano, Takeshi Ishigaki, Kazunori Sugimoto
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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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Patent number: 8084146Abstract: The present invention is a light emitting device material characterized by containing an anthracene compound represented by the following general formula (1), and the present invention allows a light emitting device having high luminous efficiency and excellent durability. (R1 to R10 are a hydrogen atom, alkyl group, cycloalkyl group, heterocyclic group or the like.Type: GrantFiled: May 19, 2005Date of Patent: December 27, 2011Assignee: Toray Industries, Inc.Inventors: Seiichiro Murase, Daisuke Kitazawa, Kazumasa Nagao, Kazunori Sugimoto, Tsuyoshi Tominaga
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Publication number: 20110272681Abstract: A light-emitting element has high luminous efficiency and excellent durability. The light-emitting element includes at least a light-emitting layer between a positive electrode and a negative electrode, and emits light by electrical energy. The light-emitting element is characterized by containing a naphthacene compound that has a specific structure and organic fluorescent substance that has a fluorescence peak wavelength of not less than 500 nm but not more than 690 nm.Type: ApplicationFiled: January 19, 2010Publication date: November 10, 2011Applicant: TORAY INDUSTRIES, INC.Inventors: Kazunori Sugimoto, Tsuyoshi Tominaga
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Patent number: 7901794Abstract: The present invention is a light-emitting device material characterized by containing a pyrene compound represented by the following general formula (1): wherein R1 to R10 are specific functional groups, provided that at least one of the R1 to R10 is a substituent represented by the following general formula (2): wherein R11 to R14 are specific functional groups, provided that any one of the R11 to R14 is used for a single bond with a pyrene skeleton; X1 is a group represented by the following general formula (3): wherein R15 is a specific functional group; and Y1 to Y4 is selected from among a nitrogen atom and a carbon atom, provided that at least one of the Y1 to Y4 is a nitrogen atom and at least one thereof is a carbon atom, and no substituents exist on the nitrogen atom in the case of the nitrogen atom. This material provides a light-emitting device having high luminous efficiency and excellent durability.Type: GrantFiled: February 23, 2006Date of Patent: March 8, 2011Assignee: Toray Industries, Inc.Inventors: Kazunori Sugimoto, Seiichiro Murase, Daisuke Kitazawa, Kazumasa Nagao, Takafumi Ogawa, Tsuyoshi Tominaga
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Publication number: 20100187520Abstract: Disclosed is a light emitting device material characterized by containing a specific fluorine compound. This light emitting device material enables to obtain a light emitting device having high luminous efficiency, excellent color purity and excellent durability. Also disclosed is a light emitting device using such a light emitting device material.Type: ApplicationFiled: July 16, 2008Publication date: July 29, 2010Applicant: Toray Industries, Inc.Inventors: Kazunori Sugimoto, Tsuyoshi Tominaga
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Publication number: 20100108992Abstract: The present invention provides a light emitting device comprising at least an emissive layer existing between an anode and a cathode, which emits light by means of electric energy. The light emitting device contains a compound having a pyrromethene skeletal structure with a specific structure or a metal complex thereof and a naphthacene derivative, and thus the light emitting device has high luminance efficiency and excellent durability.Type: ApplicationFiled: October 15, 2007Publication date: May 6, 2010Inventors: Takeshi Ikeda, Tsuyoshi Tominaga, Kazunori Sugimoto, Kazumasa Nagao
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Publication number: 20090096356Abstract: A light emitting device material containing a pyrene compound of formula (1) and a light emitting device.Type: ApplicationFiled: September 8, 2006Publication date: April 16, 2009Inventors: Seiichiro Murase, Kazumasa Nagao, Kazunori Sugimoto, Takeshi Ishigaki, Takafumi Ogawa
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Publication number: 20090066245Abstract: The present invention is a light-emitting device material characterized by containing a pyrene compound represented by the following general formula (1): wherein R1 to R10 are specific functional groups, provided that at least one of the R1 to R10 is a substituent represented by the following general formula (2): wherein R11 to R14 are specific functional groups, provided that any one of the R11 to R14 is used for a single bond with a pyrene skeleton; X1 is a group represented by the following general formula (3): wherein R15 is a specific functional group; and Y1 to Y4 is selected from among a nitrogen atom and a carbon atom, provided that at least one of the Y1 to Y4 is a nitrogen atom and at least one thereof is a carbon atom, and no substituents exist on the nitrogen atom in the case of the nitrogen atom. This material provides a light-emitting device having high luminous efficiency and excellent durability.Type: ApplicationFiled: February 23, 2006Publication date: March 12, 2009Applicant: TORAY INDUSTRIES, INC.Inventors: Kazunori Sugimoto, Seiichiro Murase, Daisuke Kitazawa, Kazumasa Nagao, Takafumi Ogawa, Tsuyoshi Tominaga
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Publication number: 20070267958Abstract: The invention provides a light emitting device having a low driving voltage and excellent durability by a material for a light emitting device expressed by the general formula (1): where in each of R1, R2, R3, R4, R5 and R6 may be the same or different and is selected from hydrogen, an alkyl group, and an aryl group, A represents an n-valent aromatic hydrocarbon group, B represents an alkyl group or an aryl group, X represents carbon or nitrogen, n represents a natural number from 2 to 6, and n substituents having a phenanthroline skeleton or a benzoquinoline skeleton may be the same or different.Type: ApplicationFiled: August 23, 2004Publication date: November 22, 2007Applicant: TORAY INDUSTRIES, INC.Inventors: Daisuke Kitazawa, Tsuyoshi Tominaga, Mariko Sano, Takeshi Ishigaki, Kazunori Sugimoto