Patents by Inventor Masako Takeuchi
Masako Takeuchi 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: 20140361285Abstract: The present invention provides an organic electroluminescent device exhibiting a long life, a high luminance, and a high efficiency. An organic electroluminescent device comprising on a substrate an anode, a hole transport layer, an organic light-emitting layer, and a cathode, wherein the organic light-emitting layer contains an organic compound having a pyridine ring, a pyrazine ring, or a triazine ring as a partial structure and the hole transport layer contains a monoamine compound represented by the following formula (I): wherein R1 to R9 represent a hydrogen atom, an aryl group, or an alkyl group; R1 to R9 may be the same or different from each other; and R1 to R9 may further have an aryl group or an alkyl group as a substituent in the case where R1 to R9 are an aryl group or an alkyl group.Type: ApplicationFiled: August 26, 2014Publication date: December 11, 2014Applicant: Mitsubishi Chemical CorporationInventors: Masayoshi YABE, Masayo Fugono, Koichiro Iida, Masako Takeuchi, Tomoyuki Ogata
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Patent number: 8877355Abstract: The present invention provides an organic electroluminescent device exhibiting a long life, a high luminance, and a high efficiency. An organic electroluminescent device comprising on a substrate an anode, a hole transport layer, an organic light-emitting layer, and a cathode, wherein the organic light-emitting layer contains an organic compound having a pyridine ring, a pyrazine ring, or a triazine ring as a partial structure and the hole transport layer contains a monoamine compound represented by the following formula (I): wherein R1 to R9 represent a hydrogen atom, an aryl group, or an alkyl group; R1 to R9 may be the same or different from each other; and R1 to R9 may further have an aryl group or an alkyl group as a substituent in the case where R1 to R9 are an aryl group or an alkyl group.Type: GrantFiled: March 15, 2013Date of Patent: November 4, 2014Assignee: Mitsubishi Chemical CorporationInventors: Masayoshi Yabe, Masayo Fugono, Koichiro Iida, Masako Takeuchi, Tomoyuki Ogata
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Patent number: 8427046Abstract: The present invention provides an organic electroluminescent device exhibiting a long life, a high luminance, and a high efficiency. An organic electroluminescent device comprising on a substrate an anode, a hole transport layer, an organic light-emitting layer, and a cathode, wherein the organic light-emitting layer contains an organic compound having a pyridine ring, a pyrazine ring, or a triazine ring as a partial structure and the hole transport layer contains a monoamine compound represented by the following formula (I): wherein R1 to R9 represent a hydrogen atom, an aryl group, or an alkyl group; R1 to R9 may be the same or different from each other; and R1 to R9 may further have an aryl group or an alkyl group as a substituent in the case where R1 to R9 are an aryl group or an alkyl group.Type: GrantFiled: May 16, 2006Date of Patent: April 23, 2013Assignee: Mitsubishi Chemical CorporationInventors: Masayoshi Yabe, Masayo Fugono, Koichiro Iida, Masako Takeuchi, Tomoyuki Ogata
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Patent number: 8178215Abstract: An organic compound and a charge-transporting material which are excellent in both a hole-transporting property and an electron-transporting property and have excellent electrical oxidation/reduction durability and a high triplet excitation level are provided, and an organic electroluminescent device which uses this organic compound and has high luminous efficiency and high driving stability and long lifetime is provided, wherein the organic compound has two or more partial structures represented by the following Formula (I): wherein Cz denotes a carbazolyl group; Z is as defined; and Q denotes a direct link connected to G present in a moiety represented by the following Formula (II): wherein B1 ring is a six-membered aromatic heterocycle containing n N atoms as a hetero atom; n is an integer of 1 to 3; G is as defined; and m is an integer of 3 to 5.Type: GrantFiled: December 5, 2005Date of Patent: May 15, 2012Assignees: Pioneer Corporation, Mitsubishi Chemical CorporationInventors: Masayoshi Yabe, Hideki Sato, Masako Takeuchi, Masayo Fugono, Koichiro Iida
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Patent number: 8168307Abstract: An organic compound is represented by following Formula (I): wherein Cz1 and Cz2 may be the same as or different from each other and each represent a carbazolyl group; Q1 and Q2 may be the same as or different from each other and each represent a direct bond or an arbitrary linkage group; and Cz1, Cz2, Q1, Q2, Ring B1 and Ring B2 may each be substituted. The organic compound and charge transporting material show both excellent hole transporting ability and excellent electron transporting ability and have satisfactory durability against electric oxidation/reduction and a high triplet excitation level. An organic electroluminescent device using the organic compound emits light with a high efficiency and is highly stably driven.Type: GrantFiled: January 19, 2006Date of Patent: May 1, 2012Assignees: Pioneer Corporation, Mitsubishi Chemical CorporationInventors: Koichiro Iida, Hideki Sato, Masayoshi Yabe, Masako Takeuchi
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Patent number: 8022617Abstract: An organic compound having excellent heat resistance, an excellent amorphous nature, an excellent ability to transport charges, highly excited singlet and triplet states, and excellent solubility in an organic solvent is an organic compound represented by Formula (I): wherein Ar1 represents an optionally-substituted aromatic hydrocarbon group, an optionally-substituted aromatic heterocyclic group, or an optionally-substituted alkyl group; Ar2 represents an optionally-substituted aromatic hydrocarbon group or an optionally-substituted aromatic heterocyclic group; R1 and R2 each represent a hydrogen atom or a substituent, and R1 and R2 may be bonded to each other to form a ring; and Q is represented by Formula (I-1) or (I-2): wherein Ar3 to Ar5 each represent an optionally-substituted aromatic hydrocarbon group or an optionally-substituted aromatic heterocyclic group, and Ar3 and Ar4 may be bonded to each other to form a ring.Type: GrantFiled: November 22, 2006Date of Patent: September 20, 2011Assignee: Mitsubishi Chemical CorporationInventors: Koichiro Iida, Yuichiro Kawamura, Tomoyuki Ogata, Masayoshi Yabe, Misako Okabe, Masako Takeuchi, Kazuki Okabe
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Patent number: 7777043Abstract: An object of the invention is to provide a charge transporting material having an excellent heat resistance, excellent filming properties, an excellent charge transporting ability, and excellent light-emitting characteristics and, also, to provide an organic electroluminescent element providing a high luminance and a highly luminous efficiency and having a long life. The invention relates to a charge transporting material comprising a compound having within the molecule two or more pyridine rings substituted at 2-, 4- and 6-positions thereof, which rings do not substantially conjugate each other (provided that the 3- and 5-positions of the pyridine rings may be substituted) and an organic electroluminescent element using the charge transporting material.Type: GrantFiled: January 31, 2006Date of Patent: August 17, 2010Assignee: Mitsubishi Chemical CorporationInventors: Masayoshi Yabe, Hideki Sato, Masayo Fugono, Takeshi Shioya, Masako Takeuchi
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Publication number: 20090284134Abstract: An organic compound having excellent heat resistance, an excellent amorphous nature, an excellent ability to transport charges, highly excited singlet and triplet states, and excellent solubility in an organic solvent is an organic compound represented by Formula (I): wherein Ar1 represents an optionally-substituted aromatic hydrocarbon group, an optionally-substituted aromatic heterocyclic group, or an optionally-substituted alkyl group; Ar2 represents an optionally-substituted aromatic hydrocarbon group or an optionally-substituted aromatic heterocyclic group; R1 and R2 each represent a hydrogen atom or a substituent, and R1 and R2 may be bonded to each other to form a ring; and Q is represented by Formula (I-1) or (I-2): wherein Ar3 to Ar5 each represent an optionally-substituted aromatic hydrocarbon group or an optionally-substituted aromatic heterocyclic group, and Ar3 and Ar4 may be bonded to each other to form a ring.Type: ApplicationFiled: November 22, 2006Publication date: November 19, 2009Applicant: MITSUBISHI CHEMICAL CORPORATIONInventors: Koichiro IIDA, Yuichiro Kawamura, Tomoyuki Ogata, Masayoshi Yabe, Misako Okake, Masako Takeuchi, Kazuki Okabe
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Publication number: 20090236973Abstract: An organic compound and a charge-transporting material which are excellent in both a hole-transporting property and an electron-transporting property and have excellent electrical oxidation/reduction durability and a high triplet excitation level are provided, and an organic electroluminescent device which uses this organic compound and has high luminous efficiency and high driving stability and long lifetime is provided.Type: ApplicationFiled: December 5, 2005Publication date: September 24, 2009Applicant: PIONEER CORPORATIONInventors: Masayoshi Yabe, Hideki Sato, Masako Takeuchi, Masayo Fugono, Koichiro Iida
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Publication number: 20090230846Abstract: The present invention provides an organic electroluminescent device exhibiting a long life, a high luminance, and a high efficiency. An organic electroluminescent device comprising on a substrate an anode, a hole transport layer, an organic light-emitting layer, and a cathode, wherein the organic light-emitting layer contains an organic compound having a pyridine ring, a pyrazine ring, or a triazine ring as a partial structure and the hole transport layer contains a monoamine compound represented by the following formula (I): wherein R1 to R9 represent a hydrogen atom, an aryl group, or an alkyl group; R1 to R9 may be the same or different from each other; and R1 to R9 may further have an aryl group or an alkyl group as a substituent in the case where R1 to R9 are an aryl group or an alkyl group.Type: ApplicationFiled: May 16, 2006Publication date: September 17, 2009Applicant: Mitsubishi Chemical CorporationInventors: Masayoshi Yabe, Masayo Fugono, Koichiro Iida, Masako Takeuchi, Tomoyuki Ogata
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Publication number: 20090021146Abstract: An organic compound is represented by following Formula (I): wherein Cz1 and Cz2 may be the same as or different from each other and each represent a carbazolyl group; Q1 and Q2 may be the same as or different from each other and each represent a direct bond or an arbitrary linkage group; and Cz1, Cz2, Q1, Q2, Ring B1 and Ring B2 may each be substituted. The organic compound and charge transporting material show both excellent hole transporting ability and excellent electron transporting ability and have satisfactory durability against electric oxidation/reduction and a high triplet excitation level. An organic electroluminescent device using the organic compound emits light with a high efficiency and is highly stably driven.Type: ApplicationFiled: January 19, 2006Publication date: January 22, 2009Applicants: PIONEER CORPORATION, MITSUBISHI CHEMICAL CORPORATIONInventors: Koichiro Iida, Hideki Sato, Masayoshi Yabe, Masako Takeuchi
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Publication number: 20060186796Abstract: An object of the invention is to provide a charge transporting material having an excellent heat resistance, excellent filming properties, an excellent charge transporting ability, and excellent light-emitting characteristics and, also, to provide an organic electroluminescent element providing a high luminance and a highly luminous efficiency and having a long life. The invention relates to a charge transporting material comprising a compound having within the molecule two or more pyridine rings substituted at 2-, 4- and 6-positions thereof, which rings do not substantially conjugate each other (provided that the 3- and 5-positions of the pyridine rings may be substituted) and an organic electroluminescent element using the charge transporting material.Type: ApplicationFiled: January 31, 2006Publication date: August 24, 2006Applicant: MITSUBISHI CHEMICAL CORPORATIONInventors: Masayoshi Yabe, Hideki Sato, Masayo Fugono, Takeshi Shioya, Masako Takeuchi
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Patent number: 5721084Abstract: A charge controlling agent for electrostatic image development, which is a metallic compound of a compound of the formula (I): ##STR1## wherein each of A and R is a substituted or unsubstituted aromatic ring residue, and --O and --CONH--R are bonded to positions adjacent to each other on the aromatic ring residue A, or the formula (II): ##STR2## wherein each of A.sup.1, A.sup.2, R.sup.1 and R.sup.2 is a substituted or unsubstituted aromatic ring residue, n is an integer, and --O and --CONHR.sup.1, and --O and --CONH--R.sup.2, are bonded to positions adjacent to each other on the aromatic ring residues A.sup.1 and A.sup.2, respectively.Type: GrantFiled: December 3, 1996Date of Patent: February 24, 1998Assignee: Mitsubishi Chemical CorporationInventors: Hitoshi Ono, Noriaki Takahashi, Osamu Ando, Masako Takeuchi
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Patent number: 5629124Abstract: A charge controlling agent for electrostatic image development, which is a compound of the formula (I):Ar.sub.1 --(X--Ar.sub.2).sub.n (I)wherein each of Ar.sub.1 and Ar.sub.2 is a substituted or unsubstituted aromatic ring residue, X is a member selected from the group consisting of --CONH--, --NHCO--, --SO.sub.2 NH-- and --NHSO.sub.2 --, and n is an integer of at least 2, provided that a plurality of Ar.sub.2, or a plurality of X, are the same or different groups from one another, and toner and charge-imparting material employing the charge controlling agent.Type: GrantFiled: January 29, 1996Date of Patent: May 13, 1997Assignee: Mitsubishi Chemical CorporationInventors: Hitoshi Ono, Noriaki Takahashi, Osamu Ando, Masako Takeuchi
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Patent number: 5545502Abstract: An electrostatic image-developing toner comprising at least a resin and a colorant, which further contains at least one compound of the following formula (I): ##STR1## wherein R.sub.1 is a C.sub.1-24 substituted or unsubstituted alkyl group or a substituted or unsubstituted aralkyl group, each of R.sub.2, R.sub.3 and R.sub.4 is a C.sub.2-24 substituted or unsubstituted alkyl group or a substituted or unsubstituted aralkyl group, and A is an aromatic ring residue which may have substituents.Type: GrantFiled: May 9, 1995Date of Patent: August 13, 1996Assignee: Mitsubishi Chemical CorporationInventors: Hitoshi Ono, Noriaki Takahashi, Osamu Ando, Masako Takeuchi, Hirofumi Oda
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Patent number: 5385799Abstract: A toner for development of electrostatic images containing one or more compounds of formulae (I) and (II): ##STR1## where A and R each represent an aromatic ring residue, and the hydroxyl group and the amido group in the formula are bonded to the aromatic ring A at the adjacent positions, ##STR2## where A.sup.1, A.sup.2, R.sup.1 and R.sup.2 each represent an aromatic ring residue, and the hydroxyl group and the amido group in the formula are bonded to the aromatic ring A.sup.1 or A.sup.2 at the adjacent positions; and n represents an integer. The toner is highly safe and has sufficient charge properties and charge stability.Type: GrantFiled: December 21, 1992Date of Patent: January 31, 1995Assignee: Mitsubishi Kasei CorporationInventors: Hitoshi Ono, Osamu Ando, Masako Takeuchi
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Patent number: 5231173Abstract: A metal chelate compound of a dis-azo compound represented by the following formula (I) with a metal: ##STR1## (wherein A is a residue forming a heterocyclic ring together with the carbon atom and the nitrogen atom to which it is bonded, X is a residue forming an aromatic group together with the two carbon atoms to which it is bonded, and D is an aromatic residue which may have a substituent, or a heterocyclic amine residue which may have a substituent, and Y is a group having active hydrogen) and an optical recording medium having a recording layer provided on a substrate so that information can be written in and/or read out by a laser, wherein the recording layer contains a metal chelate compound of the dis-azo compound represented by the above formula (I), with a metal.Type: GrantFiled: January 14, 1992Date of Patent: July 27, 1993Assignee: Mitsubishi Kasei CorporationInventors: Tetsuo Murayama, Shuichi Maeda, Satoru Imamura, Masako Takeuchi, Takumi Nagao
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Patent number: 5200288Abstract: An electrostatic image-developing toner comprising at least a resin and a colorant, which contains at least one compound selected from the group consisting of a hydroxynaphthlenecarboxylic acid compound, a hydroxyanthracenecarboxylic acid compound, a bishydroxynaphthalenecarboxylic acid compound a bishydroxyanthracenecarboxylic acid compound, and a metal compound of a pamo acid-type compound.Type: GrantFiled: December 11, 1991Date of Patent: April 6, 1993Assignee: Mitsubishi Kasei CorporationInventors: Osamu Ando, Masako Takeuchi, Hitoshi Ono, Toshiyuki Sueyoshi, Shigenori Hayakawa
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Patent number: 5166030Abstract: An electrostatic image-developing toner comprising at least a resin and a colorant, which contains at least one member selected from the group consisting of compounds of the following formulas (I) and (II): ##STR1## wherein each of R.sup.1, R.sup.2, Ar.sup.1 and Ar.sup.2 is a substituted or unsubstituted alkyl group, or a substituted or unsubstituted aralkyl group, and A is (B) (SO.sub.3.sup..crclbar.).sub.2 or MX.sub.6.sup.2.crclbar., wherein B is ##STR2## (wherein each of R.sup.3 and R.sup.4 is a hydrogen atom, an alkyl group, a hydroxyl group or an amino group), M is a titanium atom, a zirconium atom or a silicon atom, and X is a fluorine atom, a chlorine atom or a bromine atom.Type: GrantFiled: September 10, 1991Date of Patent: November 24, 1992Assignee: Mitsubishi Kasei CorporationInventors: Hitoshi Ono, Osamu Ando, Masako Takeuchi