Patents by Inventor Nobuhiko Akino
Nobuhiko Akino 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: 20150014669Abstract: A metal complex exhibits blue light emission of high color purity and has a color purity of small temperature dependence, particularly in the blue region. Specifically, the metal complex is represented by Formula (1a): wherein M is a metal atom; R0 is a divalent linking group; each j independently represents 0 or 1; RP1, RP2, RP3, RP4 and RP6 each independently represents a hydrogen atom or the like; RP5 represents a halogen atom or the like; m is an integer of from 1 to 3, n is an integer of from 0 to 2, and m+n is 2 or 3; and the portion represented by Formula (2): represents a bidentate ligand; wherein Rx and Ry are an atom bonding to the metal atom M, and each independently represents a carbon atom, an oxygen atom or a nitrogen atom.Type: ApplicationFiled: January 10, 2013Publication date: January 15, 2015Inventors: Nobuhiko Akino, Taichi Abe, Hideo Konno, Shigeru Shimada, Kazuhiko Sato
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Publication number: 20140374727Abstract: A highly stable metal complex useful for the manufacture of a light-emitting device has an excellent lifetime property, particularly in a blue region, specifically a metal complex represented by Formula (1): wherein M is a metal atom; each R0 independently represents a divalent linking group; i and j each independently represent 0 or 1; RP1, RP2, RP3, RP4, RP5 and RP6 resent each independently rep a hydrogen atom and the like, with a proviso that at least one of RP1, RP2, RP3, RP4, RP5 and RP6 is a dendron; m is an integer of from 1 to 3, n is an integer of from 0 to 2, and m+n is 2 or 3; and the portion represented by Formula (2): represents a bidentate ligand; wherein Rx and Ry are an atom bonding to the metal atom M, and each independently represents a carbon atom and the like.Type: ApplicationFiled: January 10, 2013Publication date: December 25, 2014Inventors: Nobuhiko Akino, Taichi Abe, Hideo Konno, Shigeru Shimada, Kazuhiko Sato
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Publication number: 20140306203Abstract: A metal complex is provided represented by Formula (1): wherein M represents a prescribed metal atom; RP1, RP2, RP3, RP4, RP5, and RP6 each independently represent a hydrogen atom or a prescribed group, wherein RP1 and RP2 may be bonded together to form a ring structure, RP2 and RP3 may be bonded together to form a ring structure, and RP3 and RP4 may be bonded together to form a ring structure, provided that at least one of RP1, RP2, RP3, and RP4 is a dendron and at least one of RP5 and RP6 is an aryl group or a monovalent heterocyclic group; m is an integer of 1 to 3 and n is an integer of 0 to 2, wherein m+n is 2 or 3; and a moiety represented by Formula (2) represents a bidentate ligand: wherein Rx and Ry each independently represent a prescribed atom.Type: ApplicationFiled: April 11, 2014Publication date: October 16, 2014Applicants: Sumitomo Chemical Company, Limited, National Institute of Advanced Industrial Science and Technology, Cambridge Display Technology LimitedInventors: Nobuhiko AKINO, Taichi ABE, Hideo KONNO, Annette Regine STEUDEL, Kiran Timothy KAMTEKAR
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Patent number: 8697256Abstract: A composition comprising a phosphorescent compound, and a compound having a structure containing three or more repeating units having a dipole moment dimension of 1.0 Debye or more connected in series, wherein, based on the total number of dimer structures composed of any two repeating units connected in series contained in the above-described structure, the proportion of the number of dimer structures in which the dimension D2 of the dipole moment of the dimer structure, the dimension D1a of the dipole moment of the first repeating unit constituting the dimer structure and the dimension D1b of the dipole moment of the second repeating unit constituting the dimer structure satisfy a relation represented by the following formula (A): D1a<D2 and D1b<D2??(A) is 50% or more.Type: GrantFiled: July 28, 2009Date of Patent: April 15, 2014Assignee: Sumitomo Chemical Company, LimitedInventors: Nobuhiko Akino, Kenta Tanaka, Hideyuki Higashimura
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Patent number: 8608986Abstract: Disclosed is a metal complex represented by the following formula (1). In the formula, M represents a metal atom; R1-R8 respectively represent a hydrogen atom, a halogen atom or a monovalent group; or alternatively R3 and R4, or R5 and R6 may combine together to form a ring.Type: GrantFiled: December 27, 2007Date of Patent: December 17, 2013Assignee: Sumitomo Chemical Company, LimitedInventors: Nobuhiko Akino, Rei Okamura
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Patent number: 8592544Abstract: A polymeric compound containing a residue of a metal complex represented by formula (1) [wherein M represents a metal atom selected from ruthenium, rhodium, palladium, osmium, iridium and platinum; R1, R2, R3, R4, R5, R6 and R8 independently represent a hydrogen atom, a halogen atom, an alkyl group, or the like; m represents an integer of 1 to 3; n represents an integer of 0 to 2; Z1, Z2, Z3, Z4 and Z5 independently represent a carbon atom or a nitrogen atom, provided that at least two member of Z1, Z2, Z3, Z4 and Z5 represent a nitrogen atom, and when any one member of Z1, Z2, Z3, Z4 and Z5 represents a carbon atom, a hydrogen atom bound to the carbon atom may be substituted by a substituent; a moiety represented by formula (2) represents a bidentate monoanionic ligand; and Rx and Ry are atoms bound to the metal atom M and independently represent a carbon atom, an oxygen atom or a nitrogen atom] and a bivalent group.Type: GrantFiled: June 23, 2009Date of Patent: November 26, 2013Assignee: Sumitomo Chemical Company, LimitedInventors: Nobuhiko Akino, Rei Okamura
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Publication number: 20130200349Abstract: It is an object of the present invention to provide a composition using a polymer compound, which is useful for manufacturing a blue phosphorescent light-emitting device excellent in luminous efficiency. The present invention provides a composition including: a polymer compound substantially consisting of a constitutional unit selected from a constitutional unit represented by Formula (1)-1 below, a constitutional unit represented by Formula (1)-2 below, a constitutional unit represented by Formula (2)-1 below, a constitutional unit represented by Formula (2)-2 below, and a constitutional unit derived from a phosphorescent light-emitting compound having a light-emitting spectrum peak at smaller than 480 nm and the polymer compound containing at least both of the constitutional unit represented by Formula (1)-1 and the constitutional unit represented by Formula (1)-2; and a phosphorescent light-emitting compound having a light-emitting spectrum peak at smaller than 480 nm.Type: ApplicationFiled: July 13, 2011Publication date: August 8, 2013Applicant: SUMITOMO CHEMICAL COMPANY, LIMITEDInventors: Masayuki Soga, Osamu Goto, Kazuei Ohuchi, Nobuhiko Akino
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Patent number: 8274074Abstract: A polymer material comprising a composition containing a fluorescent conjugated polymer (A) and a phosphorescent compound (B) or comprising a polymer having the structure of (A) and the structure of (B) in the same molecule, wherein the following conditions (1), (2) and (3) are satisfied: (1) at least one of the light emission peak wavelengths of the fluorescent conjugated polymer (A) is less than 500 nm, (2) the light emission peak wavelengths of the phosphorescent compound (B) are not less than 500 nm, (3) the following relation is satisfied: ETA?ESA 0?(ETB?ESB0)?0.2 (unit; eV) ??(Eq 1) (wherein, ESA 0 represents energy of the fluorescent conjugated polymer (A) at the ground state, ETA represents energy of the fluorescent conjugated polymer (A) at the lowest excited triplet state, ESB 0 represents energy of the phosphorescent compound (B) at the ground state, and ETB represents energy of the phosphorescent compound (B) at the lowest excited triplet state).Type: GrantFiled: August 10, 2006Date of Patent: September 25, 2012Assignee: Sumitomo Chemical Company, LimitedInventors: Chizu Sekine, Nobuhiko Akino, Miho Ishikawa
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Publication number: 20110284829Abstract: A polymer compound having a repeating unit represented by the following formula (1): (wherein Ar1 and Ar2 represent an arylene group or a di-valent aromatic heterocyclic group, Ar3 represents a single bond, an unsubstituted or substituted (a+1)-valent aromatic hydrocarbon group or (a+1)-valent aromatic heterocyclic group, R1 and R2 represent an alkyl group, an alkoxy group, an aryl group, an aryloxy group, a mono-valent heterocyclic group, an amino group, a silyl group, a halogen atom, a carboxyl group or a cyano group. a represents an integer of 1 or more, with the proviso that a is 1 when Ar3 is a single bond. b and c represent an integer of 0 to 4).Type: ApplicationFiled: January 28, 2010Publication date: November 24, 2011Applicant: SUMITOMO CHEMICAL COMPANY, LIMITEDInventors: Daisuke Fukushima, Osamu Goto, Kohei Asada, Nobuhiko Akino
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Patent number: 8034420Abstract: Disclosed is a composition containing a compound having a benzotriazole ring structure and a phosphorescent compound.Type: GrantFiled: February 5, 2008Date of Patent: October 11, 2011Assignee: Sumitomo Chemical Company, LimitedInventor: Nobuhiko Akino
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Publication number: 20110127467Abstract: A composition comprising a phosphorescent compound, and a compound having a structure containing three or more repeating units having a dipole moment dimension of 1.0 Debye or more connected in series, wherein, based on the total number of dimer structures composed of any two repeating units connected in series contained in the above-described structure, the proportion of the number of dimer structures in which the dimension D2 of the dipole moment of the dimer structure, the dimension D1a of the dipole moment of the first repeating unit constituting the dimer structure and the dimension D1b of the dipole moment of the second repeating unit constituting the dimer structure satisfy a relation represented by the following formula (A): D1a<D2 and D1b<D2??(A) is 50% or more.Type: ApplicationFiled: July 28, 2009Publication date: June 2, 2011Applicants: SUMITOMO CHEMICAL COMPANY, LIMITED, SUMATION CO., LTD.Inventors: Nobuhiko Akino, Kenta Tanaka, Hideyuki Higashimura
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Publication number: 20110124808Abstract: A polymeric compound containing a residue of a metal complex represented by formula (1) [wherein M represents a metal atom selected from ruthenium, rhodium, palladium, osmium, iridium and platinum; R1, R2, R3, R4, R5, R6 and R8 independently represent a hydrogen atom, a halogen atom, an alkyl group, or the like; m represents an integer of 1 to 3; n represents an integer of 0 to 2; Z1, Z2, Z3, Z4 and Z5 independently represent a carbon atom or a nitrogen atom, provided that at least two member of Z1, Z2, Z3, Z4 and Z5 represent a nitrogen atom, and when any one member of Z1, Z2, Z3, Z4 and Z5 represents a carbon atom, a hydrogen atom bound to the carbon atom may be substituted by a substituent; a moiety represented by formula (2) represents a bidentate monoanionic ligand; and Rx and Ry are atoms bound to the metal atom M and independently represent a carbon atom, an oxygen atom or a nitrogen atom] and a bivalent group.Type: ApplicationFiled: June 23, 2009Publication date: May 26, 2011Applicants: SUMITOMO CHEMICAL COMPANY, LIMITED, SUMATION CO., LTD.Inventors: Nobuhiko Akino, Rei Okamura
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Publication number: 20110121236Abstract: Disclosed is a composition comprising a compound having a saturated heterocyclic structure, in which the number of ring-constituting members containing a nitrogen atom is 5 or more, and a phosphorescent compound.Type: ApplicationFiled: June 23, 2009Publication date: May 26, 2011Applicants: SUMITOMO CHEMICAL COMPANY, LIMITED, SUMATION CO., LTD.Inventor: Nobuhiko Akino
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Publication number: 20110114888Abstract: Disclosed is a composition comprising a compound having residues of at least two nitrogenated polycyclic compounds selected from the group consisting of nitrogenated polycyclic compounds represented by formulae (1-1), (1-2), (1-3) and (1-4) [wherein R's independently represent a hydrogen atom or a substituent and may be the same as or different from one another] and a phosphorescence-emitting compound.Type: ApplicationFiled: June 23, 2009Publication date: May 19, 2011Applicants: SUMITOMO CHEMICAL COMPANY, LIMITED, SUMATION CO., LTD.Inventor: Nobuhiko Akino
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Publication number: 20110108768Abstract: Disclosed is a composition comprising: a compound having residues of at least two kinds of nitrogenated compounds selected from the group consisting of nitrogenated compounds represented by formulae (1-1), (1-2), (1-3) and (1-4) [wherein R's independently represent a hydrogen atom or a substituent and may be the same as or different from one another]; and a phosphorescent light-emitting compound.Type: ApplicationFiled: June 23, 2009Publication date: May 12, 2011Applicants: SUMITOMO CHEMICAL COMPANY, LIMITED, SUMATION CO., LTD.Inventor: Nobuhiko Akino
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Publication number: 20110108766Abstract: Disclosed is a composition comprising: a compound having a residue of at least one nitrogenated compound selected from the group consisting of nitrogenated compounds represented by formulae (1-1), (1-2), (1-3) and (1-4) [wherein R's independently represent a hydrogen atom or a substituent and may be the same as or different from one another] and a residue of at least one nitrogenated polycyclic compound selected from the group consisting of nitrogenated polycyclic compounds represented by formulae (2-1), (2-2), (2-3) and (2-4) [wherein R's are as defined above]; and a phosphorescent light-emitting compound.Type: ApplicationFiled: June 23, 2009Publication date: May 12, 2011Applicants: SUMITOMO CHEMICAL COMPANY, LIMITED, SUMATION CO., LTD.Inventor: Nobuhiko Akino
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Publication number: 20110108767Abstract: Disclosed is a composition comprising a compound having a pyridazine ring structure and a phosphorescent compound.Type: ApplicationFiled: June 23, 2009Publication date: May 12, 2011Inventor: Nobuhiko Akino
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Publication number: 20100283038Abstract: A polymer material comprising a composition containing a fluorescent conjugated polymer (A) and a phosphorescent compound (B) or comprising a polymer having the structure of (A) and the structure of (B) in the same molecule, wherein the following conditions (1), (2) and (3) are satisfied: (1) at least one of the light emission peak wavelengths of the fluorescent conjugated polymer (A) is less than 500 nm, (2) the light emission peak wavelengths of the phosphorescent compound (B) are not less than 500 nm, (3) the following relation is satisfied: ETA?ESA 0?(ETB?ESB)?0.2 (unit; eV) ??(Eq 1) (wherein, ESA 0 represents energy of the fluorescent conjugated polymer (A) at the ground state, ETA represents energy of the fluorescent conjugated polymer (A) at the lowest excited triplet state, ESB 0 represents energy of the phosphorescent compound (B) at the ground state, and ETB represents energy of the phosphorescent compound (B) at the lowest excited triplet state).Type: ApplicationFiled: August 10, 2006Publication date: November 11, 2010Applicant: Sumitomo Chemical Company, LimitedInventors: Chizu Sekine, Nobuhiko Akino, Miho Ishikawa
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Publication number: 20100264812Abstract: Disclosed is a metal complex which has a central metal (M) selected from the group consisting of Sc, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, Y, Zr, Nb, Mo, Tc, Ru, Rh, Pd, Ag, Cd, Hf, Ta, W, Re, Pt, Au and Hg. The metal complex has no halogen unidentate ligand. In the metal complex, the sum total of the square values of the orbital coefficients of the outermost d orbitals of the central metal comprises ? or higher of the sum total of the square values of all of the atomic orbital coefficients in the highest occupied molecular orbital (HOMO) given by a computational scientific technique, the energy difference (S1?T1) between the minimum singlet excitation energy (S1) and the minimum triplet excitation energy (T1) given by a computational scientific technique falls within the range from 0.1 (eV) to 1.0 (eV) inclusive, and the oscillator strength (f) falls within the range from 0.005 and 1.0 inclusive.Type: ApplicationFiled: September 8, 2006Publication date: October 21, 2010Applicant: SUMITOMO CHEMICAL COMPANY, LIMITEDInventors: Nobuhiko Akino, Chizu Sekine, Rei Okamura
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Publication number: 20100073602Abstract: Disclosed is a composition containing a compound having an indole ring structure and a phosphorescent compound.Type: ApplicationFiled: February 5, 2008Publication date: March 25, 2010Applicants: SUMITOMO CHEMICAL COMPANY, LIMITED, SUMATION CO., LTDInventor: Nobuhiko Akino