Patents by Inventor Tomoyasu Yoshida
Tomoyasu Yoshida 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: 11424410Abstract: A light emitting device having an anode, a cathode, a first organic layer and a second organic layer disposed between the anode and the cathode is provided.Type: GrantFiled: September 27, 2017Date of Patent: August 23, 2022Assignee: SUMITOMO CHEMICAL COMPANY, LIMITEDInventors: Toshiaki Sasada, Ryuji Matsumoto, Tomoyasu Yoshida
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Patent number: 11271166Abstract: A light emitting device having an anode, a cathode, a first organic layer disposed between the anode and the cathode and a second organic layer disposed between the anode and the cathode is provided. The first organic layer is a layer containing a compound (T) in which the absolute value of the difference between the energy level at the lowest triplet excited state and the energy level at the lowest singlet excited state is 0.5 eV or less and not containing a phosphorescent metal complex. The second organic layer is a layer containing a crosslinked body of a polymer compound containing a crosslink constitutional unit and the energy level at the lowest triplet excited state of the polymer compound is 2.25 eV or more.Type: GrantFiled: September 27, 2017Date of Patent: March 8, 2022Assignee: SUMITOMO CHEMICAL COMPANY, LIMITEDInventors: Toshiaki Sasada, Ryuji Matsumoto, Tomoyasu Yoshida
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Patent number: 11021568Abstract: A polymer compound which is useful for producing a light emitting device having excellent luminance life is described. The polymer compound contains a constitutional unit having a residue of a compound represented by the formula (1) and a constitutional unit having no residue of a compound represented by the formula (1): In formula (1), Ring A, Ring B and Ring C represent an aromatic hydrocarbon ring, X represents a boron atom, Y1, Y2 and Y3 represent N-Ry, a sulfur atom or a selenium atom, Ry represents a hydrogen atom, an aryl group, a monovalent heterocyclic group or an alkyl group, and n3 is 0 or 1. When n3 is 0, —Y3— is absent.Type: GrantFiled: June 27, 2018Date of Patent: June 1, 2021Assignee: SUMITOMO CHEMICAL COMPANY, LIMITEDInventors: Ryuji Matsumoto, Yuki Hiroi, Tomoyasu Yoshida, Daisuke Fukushima
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Publication number: 20210087330Abstract: A polymer compound which is useful for producing a light emitting device having excellent luminance life is described. The polymer compound contains a constitutional unit having a residue of a compound represented by the formula (1) and a constitutional unit having no residue of a compound represented by the formula (1): In formula (1), Ring A, Ring B and Ring C represent an aromatic hydrocarbon ring, X represents a boron atom, Y1, Y2 and Y3 represent N-Ry, a sulfur atom or a selenium atom, Ry represents a hydrogen atom, an aryl group, a monovalent heterocyclic group or an alkyl group, and n3 is 0 or 1. When n3 is 0, —Y3— is absent.Type: ApplicationFiled: June 27, 2018Publication date: March 25, 2021Inventors: Ryuji MATSUMOTO, Yuki HIROI, Tomoyasu YOSHIDA, Daisuke FUKUSHIMA
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Publication number: 20200194695Abstract: A composition is provided in which a phosphorescent compound represented by formula (1) and a host material are blended with each other. The amount of chlorine atoms contained as impurities in the phosphorescent compound is 3.5 ppm by mass or less with respect to the total amount of solid contents blended in the composition. In Formula (1), M1 represents an iridium atom; n1 represents an integer of 1 or more, n2 represents an integer of 0 or more, n1+n2 is 2 or 3; E1 and E2 represent a carbon atom or a nitrogen atom; R1 ring represents a 5-membered aromatic heterocyclic ring and R2 ring represents an aromatic hydrocarbon ring; A1-G1-A2 represents an anionic bidentate ligand; A1 and A2 represent a nitrogen atom; and G1 represents a single bond.Type: ApplicationFiled: February 26, 2020Publication date: June 18, 2020Inventors: Toshiaki SASADA, Taichi ABE, Tomoyasu YOSHIDA, Takakazu SAITO
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Patent number: 10654967Abstract: A polymer compound having a constitutional unit represented by formula (1A) or formula (1B) and a constitutional unit represented by formula (2A) or formula (2B) is provided, wherein each of XM and XN is a crosslinkable group; and RAm, RBm, Ar1m to Ar5m, LM, ArM, m1 to m6, RAn, RBn, Ar1n to Ar5n, ArLn, LN, ArN, n1 to n6, and Ln are as defined in the specification. The polymer compound is excellent in crosslinkability and hole transportability.Type: GrantFiled: September 14, 2016Date of Patent: May 19, 2020Assignee: Sumitomo Chemical Company, LimitedInventors: Mio Shiratori, Ken Sakakibara, Daisuke Fukushima, Tomoyasu Yoshida
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Publication number: 20200152882Abstract: A light emitting device having an anode, a cathode, a first organic layer and a second organic layer disposed between the anode and the cathode is provided. The first organic layer is a layer containing a compound represented by the formula (T) and a fluorescent compound represented by the formula (B) and the second organic layer is a layer containing a crosslinked body of a crosslink material, wherein the variable groups are as defined in the specification.Type: ApplicationFiled: January 15, 2020Publication date: May 14, 2020Inventors: Toshiaki SASADA, Ryuji MATSUMOTO, Tomoyasu YOSHIDA
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Publication number: 20190259952Abstract: To provide a light emitting device showing low driving voltage. A light emitting device having an anode, a cathode, a first organic layer and a second organic layer disposed between the anode and the cathode, wherein the first organic layer is a layer containing a light emitting material represented by the formula (T) and the second organic layer is a layer containing a crosslinked body of a polymer compound containing a crosslink constitutional unit: [wherein, nT1 represents an integer of 0 to 5. nT2 represents an integer of 1 to 10. ArT1 represents a single-ring or condensed-ring monovalent hetero ring group containing a nitrogen atom having no double bond as a ring constituent atom and not containing a nitrogen atom having a double bond as a ring constituent atom. LT1 represents an alkylene group, an arylene group or the like. ArT2 represents a single-ring or condensed-ring hetero ring group containing a nitrogen atom having a double bond as a ring constituent atom.].Type: ApplicationFiled: September 27, 2017Publication date: August 22, 2019Applicant: Sumitomo Chemical Company, LimitedInventors: Toshiaki SASADA, Ryuji MATSUMOTO, Tomoyasu YOSHIDA
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Publication number: 20190221744Abstract: A light emitting device having an anode, a cathode, a first organic layer and a second organic layer disposed between the anode and the cathode is provided. The first organic layer is a layer containing a compound represented by the formula (T) and a fluorescent compound represented by the formula (B) and the second organic layer is a layer containing a crosslinked body of a crosslink material, wherein the variable groups are as defined in the specification.Type: ApplicationFiled: September 27, 2017Publication date: July 18, 2019Inventors: Toshiaki SASADA, Ryuji MATSUMOTO, Tomoyasu YOSHIDA
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Publication number: 20190214569Abstract: A light emitting device having an anode, a cathode, a first organic layer disposed between the anode and the cathode and a second organic layer disposed between the anode and the cathode is provided. The first organic layer is a layer containing a compound (T) in which the absolute value of the difference between the energy level at the lowest triplet excited state and the energy level at the lowest singlet excited state is 0.5 eV or less and not containing a phosphorescent metal complex. The second organic layer is a layer containing a crosslinked body of a polymer compound containing a crosslink constitutional unit and the energy level at the lowest triplet excited state of the polymer compound is 2.25 eV or more.Type: ApplicationFiled: September 27, 2017Publication date: July 11, 2019Applicant: Sumitomo Chemical Company, LimitedInventors: Toshiaki SASADA, Ryuji MATSUMOTO, Tomoyasu YOSHIDA
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Publication number: 20190036046Abstract: A composition is provided in which a phosphorescent compound represented by formula (1) and a host material are blended with each other. The amount of chlorine atoms contained as impurities in the phosphorescent compound is 3.5 ppm by mass or less with respect to the total amount of solid contents blended in the composition In Formula (1), M1 represents an iridium atom; n1 represents an integer of 1 or more, n2 represents an integer of 0 or more, n1+n2 is 2 or 3; E1 and E2 represent a carbon atom or a nitrogen atom; R1 ring represents a 5-membered aromatic heterocyclic ring and R2 ring represents an aromatic hydrocarbon ring; A1-G1-A2 represents an anionic bidentate ligand; A1 and A2 represent a nitrogen atom; and G1 represents a single bond.Type: ApplicationFiled: January 24, 2017Publication date: January 31, 2019Inventors: Toshiaki SASADA, Taichi ABE, Tomoyasu YOSHIDA, Takakazu SAITO
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Publication number: 20180230264Abstract: A polymer compound having a constitutional unit represented by formula (1A) or formula (1B) and a constitutional unit represented by formula (2A) or formula (2B) is provided, wherein each of XM and XN is a crosslinkable group; and RAm, RBm, Ar1m to Ar5m, LM, ArM, m1 to m6, RAn, RBn, Ar1n to Ar5n, ArLn, LN, ArN, n1 to n6, and Ln are as defined in the specification. The polymer compound is excellent in crosslinkability and hole transportability.Type: ApplicationFiled: September 14, 2016Publication date: August 16, 2018Inventors: Mio SHIRATORI, Ken SAKAKIBARA, Daisuke FUKUSHIMA, Tomoyasu YOSHIDA
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Patent number: 9966534Abstract: A copolymer comprising a repeat unit of Formula (I) and at least one further repeat unit: Formula (I) wherein: wherein: Ar1 and Ar2 are each independently selected from aryl and heteroaryl, each of which is independently unsubstituted or substituted with one or more substituents; each R is independently a substituent; each n is independently 0, 1 or 2; each m is independently 0, 1, 2 or 3, and at least one of the repeat units of the polymer is a partially conjugating repeat unit.Type: GrantFiled: December 23, 2013Date of Patent: May 8, 2018Assignees: Cambridge Display Technology Limited, Sumitomo Chemical Company LimitedInventors: Philip Stackhouse, Sophie Barbara Heidenhain, Ruth Pegington, Jonathan Pillow, Martin Humphries, Tomoyasu Yoshida
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Patent number: 9837612Abstract: A polymer compound having a constitutional unit represented by the following formula (1):Type: GrantFiled: December 21, 2011Date of Patent: December 5, 2017Assignee: SUMITOMO CHEMICAL COMPANY, LIMTEDInventors: Tomoyasu Yoshida, Kazunori Iwakura
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Patent number: 9793486Abstract: A polymer compound is provided having a constitutional unit represented by the following formula (1): wherein: R1 and R2 represent an alkyl group, an aryl group, a mono-valent aromatic heterocyclic group, an alkoxy group or an aryloxy group, and Ar1 represents an arylene group or a di-valent condensed polycyclic aromatic heterocyclic group.Type: GrantFiled: March 16, 2012Date of Patent: October 17, 2017Assignee: SUMITOMO CHEMICAL COMPANY, LIMITEDInventors: Daisuke Fukushima, Tomoyasu Yoshida, Yoshihiro Kawada, Takashi Kuragano, Makoto Anryu
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Patent number: 9741934Abstract: A polymer compound comprising a constitutional unit having a group represented by the formula (1): wherein Ring A1A and Ring R2A represent an aromatic hydrocarbon ring or a heterocyclic ring and these rings each optionally have a substituent, nA represents an integer of 0 to 5, nB represents an integer of 1 to 5, LA and LB represent an alkylene group, a cycloalkylene group, an arylene group, a divalent heterocyclic ring group, a group represented by —NR?—, an oxygen atom or a sulfur atom, and R? represents a hydrogen atom, an alkyl group or the like, and Q1 represents a crosslinkable group.Type: GrantFiled: November 21, 2014Date of Patent: August 22, 2017Assignee: Sumitomo Chemical Company, LimitedInventors: Tomoyasu Yoshida, Mio Shiratori
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Publication number: 20170092864Abstract: A polymer compound comprising a constitutional unit having a group represented by the formula (1): wherein Ring A1A and Ring R2A represent an aromatic hydrocarbon ring or a heterocyclic ring and these rings each optionally have a substituent, nA represents an integer of 0 to 5, nB represents an integer of 1 to 5, LA and LB represent an alkylene group, a cycloalkylene group, an arylene group, a divalent heterocyclic ring group, a group represented by —NR?—, an oxygen atom or a sulfur atom, and R? represents a hydrogen atom, an alkyl group or the like, and Q1 represents a crosslinkable group.Type: ApplicationFiled: November 21, 2014Publication date: March 30, 2017Applicant: Sumitomo Chemical Company, LimitedInventors: Tomoyasu YOSHIDA, Mio SHIRATORI
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Patent number: 9388101Abstract: A polymer compound comprising a constitutional unit represented by the formula (1): in the formula, Ar1 represents an aromatic hydrocarbon group or an aromatic heterocyclic group, E represents a group obtained by removing one hydrogen atom in a compound represented by the formula (2): in the formula, R1 to R10 represents a hydrogen atom, an alkyl group, an aryl group, a monovalent aromatic heterocyclic group or a group represented by —O—RA, RA represents an alkyl group, an aryl group or a monovalent aromatic heterocyclic group, and aa is an integer of 1 or more.Type: GrantFiled: February 24, 2011Date of Patent: July 12, 2016Assignee: SUMITOMO CHEMICAL COMPANY, LIMITEDInventors: Tomoyasu Yoshida, Hidenori Hanaoka, Shota Moriwaki
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Patent number: 9267003Abstract: Provided are a useful polymer compound excellent in hole transportability, and a composition, an organic film, an insolubilized organic film, a light-emitting device, a planar light source, and a display device including the polymer compound.Type: GrantFiled: January 18, 2013Date of Patent: February 23, 2016Assignee: Sumitomo Chemical Company, LimitedInventors: Tomoyasu Yoshida, Youichi Inada, Daisuke Fukushima
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Publication number: 20150333262Abstract: A copolymer comprising a repeat unit of Formula (I) and at least one further repeat unit: Formula (I) wherein: wherein: Ar1 and Ar2 are each independently selected from aryl and heteroaryl, each of which is independently unsubstituted or substituted with one or more substituents; each R is independently a substituent; each n is independently 0, 1 or 2; each m is independently 0, 1, 2 or 3, and at least one of the repeat units of the polymer is a partially conjugating repeat unit.Type: ApplicationFiled: December 23, 2013Publication date: November 19, 2015Applicants: CAMBRIDGE DISPLAY TECHNOLOGY LIMITED, SUMITOMO CHEMICAL COMPANY LIMITEDInventors: Philip Stackhouse, Sophie Barbara Heidenhain, Ruth Pegington, Jonathan Pillow, Martin Humphries, Tomoyasu Yoshida