Patents by Inventor Norihisa Dan
Norihisa Dan 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: 7906039Abstract: The present invention relates to fluorescent diketopyrrolopyrrole of the formula I a process for their preparation and their use for the preparation of inks, colorants, pigmented plastics for coatings, non-impact-printing material, color filters, cosmetics, polymeric ink particles, toners, as fluorescent tracers, in color changing media, in solid dye lasers and electroluminescent devices. A luminescent device comprising a composition according to the present invention is high in the efficiency of electrical energy utilization and high in luminance.Type: GrantFiled: January 14, 2009Date of Patent: March 15, 2011Assignee: BASF SEInventors: Hiroshi Yamamoto, Norihisa Dan
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Patent number: 7749404Abstract: The present invention relates to fluorescent diketopyrrolopyrroles (“DPPs”) of the formula A1 and A2 independently from each other stand for characterized in that that at least two adjacent substituents R5 to R11 form an aromatic or aliphatic fused ring system, or at least one substituent R5 to R11 is cycloalkyl, aralkyl, alkenyl, cycloalkenyl, alkynyl, a hydroxyl group, a mercapto group, alkylthio, an aryl thioether group, a heterocyclic group, halogen, haloalkyl, haloalkenyl, haloalkynyl, a cyano group, an aldehyde group, a carbonyl group, a carboxyl group, an ester group, a carbamoyl group, a nitro group, a silyl group, a siloxanyl group, a substituted or unsubstituted vinyl, arylamino or diarylamino group; a process for their preparation and their use for the preparation of inks, colorants, pigmented plastics for coatings, non-impact-printing material, color filters, cosmetics, or for the preparation of polymeric ink particles, toners, dye lasers and electroluminescent devices.Type: GrantFiled: April 24, 2006Date of Patent: July 6, 2010Assignee: Ciba Specialty Chemicals Corp.Inventors: Hiroshi Yamamoto, Norihisa Dan, Olof Wallquist
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Publication number: 20090173916Abstract: The present invention relates to fluorescent diketopyrrolopyrrole of the formula I a process for their preparation and their use for the preparation of inks, colorants, pigmented plastics for coatings, non-impact-printing material, color filters, cosmetics, polymeric ink particles, toners, as fluorescent tracers, in color changing media, in solid dye lasers and electroluminescent devices. A luminescent device comprising a composition according to the present invention is high in the efficiency of electrical energy utilisation and high in luminance.Type: ApplicationFiled: January 14, 2009Publication date: July 9, 2009Inventors: Hiroshi Yamamoto, Norihisa Dan
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Patent number: 7541096Abstract: Disclosed are electroluminescent devices that comprise organic layers that contain certain 2H-benzotriazole compounds. The 2H-benzotriazole compounds of blue-emitting, durable, organo-electroluminescent layers. The electroluminescent devices may be employed for full color display panels in for example mobile phones, televisions and personal computer screens.Type: GrantFiled: May 30, 2003Date of Patent: June 2, 2009Assignee: Ciba Specialty Chemicals CorporationInventors: Jonathan Rogers, Anthony David DeBellis, Stephen Daniel Pastor, Norihisa Dan, François Maike
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Patent number: 7501076Abstract: The present invention relates to fluorescent diketopyrrolopyrrole of the formula (I), a process for their preparation and their use for the preparation of inks, colorants, pigmented plastics for coatings, non-impact-printing material, color filters, cosmetics, polymeric ink particles, toners, as fluorescent tracers, in color changing media, in solid dye lasers and electroluminescent devices. A luminescent device comprising a composition according to the present invention is high in the efficiency of electrical energy utilisation and high in luminance.Type: GrantFiled: April 1, 2004Date of Patent: March 10, 2009Assignee: Ciba Specialty Chemicals CorporationInventors: Hiroshi Yamamoto, Norihisa Dan
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Publication number: 20090057613Abstract: The present invention relates to compounds of the Formula (I), a process for their preparation and their use for the preparation of inks, colorants, pigmented plastics, coatings, non-impact-printing material, color filters, cosmetics, polymeric ink particles, toners, as fluorescent tracers, in color changing media, in solid dye lasers and electroluminescent devices. A luminescent device comprising a composition according to the present invention is high in the efficiency of electrical energy utilisation and high in luminance.Type: ApplicationFiled: June 20, 2005Publication date: March 5, 2009Applicant: CIBA SPECIALTY CHEMICALS HOLDING INC.Inventors: Hiroshi Yamamoto, Norihisa Dan, Paul Adriaan Van Der Schaaf
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Publication number: 20080217580Abstract: The present invention relates to compounds of formula (I) a process for their production and to their use for coloring high molecular weight organic materials, as fluorescent tracers, in solid dye lasers, EL lasers, in EL devices and lighting. The compounds of formula I show unique broadband luminescence in visible region.Type: ApplicationFiled: April 11, 2005Publication date: September 11, 2008Inventors: Junichi Tanabe, Hiroshi Yamamoto, Norihisa Dan
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Publication number: 20080027226Abstract: Disclosed are electroluminescent devices that comprise organic layers that contain certain 2H-benzotriazole compounds. The 2H-benzotriazole compounds are suitable components of blue-emitting, durable, organo-electroluminescent layers. The electroluminescent devices may be employed for full color display panels in, for example, mobile phones, televisions and personal computer screens.Type: ApplicationFiled: November 26, 2004Publication date: January 31, 2008Inventors: Jonathan Rogers, Francois Maike, Norihisa Dan
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Publication number: 20070010672Abstract: The present invention relates to fluorescent diketopyrrolopyrrole of the formula (I), a process for their preparation and their use for the preparation of inks, colorants, pigmented plastics for coatings, non-impact-printing material, color filters, cosmetics, polymeric ink particles, toners, as fluorescent tracers, in color changing media, in solid dye lasers and electroluminescent devices. A luminescent device comprising a composition according to the present invention is high in the efficiency of electrical energy utilisation and high in luminance.Type: ApplicationFiled: April 1, 2004Publication date: January 11, 2007Inventors: Hiroshi Yamamoto, Norihisa Dan
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Publication number: 20060186376Abstract: The present invention relates to fluorescent diketopyrrolopyrroles (“DPPs”) of the formula A1 and A2 independently from each other stand for characterized in that that at least two adjacent substituents R5 to R11 form an aromatic or aliphatic fused ring system, or at least one substituent R5 to R11 is cycloalkyl, aralkyl, alkenyl, cycloalkenyl, alkynyl, a hydroxyl group, a mercapto group, alkylthio, an aryl thioether group, a heterocyclic group, halogen, haloalkyl, haloalkenyl, haloalkynyl, a cyano group, an aldehyde group, a carbonyl group, a carboxyl group, an ester group, a carbamoyl group, a nitro group, a silyl group, a siloxanyl group, a substituted or unsubstituted vinyl, arylamino or diarylamino group; a process for their preparation and their use for the preparation of inks, colorants, pigmented plastics for coatings, non-impact-printing material, color filters, cosmetics, or for the preparation of polymeric ink particles, toners, dye lasers and electroluminescent devices.Type: ApplicationFiled: April 24, 2006Publication date: August 24, 2006Inventors: Hiroshi Yamamoto, Norihisa Dan, Olof Wallquist
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Patent number: 7063806Abstract: The present invention relates to fluorescent diketopyrrolopyrroles (“DPPs”) of the formula characterized in that that at least two adjacent substituents R5 to R11 form an aromatic or aliphatic fused ring system, or at least one substituent R5 to R11 is cycloalkyl, aralkyl, alkenyl, cycloalkenyl, alkynyl, a hydroxyl group, a mercapto group, alkylthio, an aryl thioether group, a heterocyclic group, halogen, haloalkyl, haloalkenyl, haloalkynyl, a cyano group, an aldehyde group, a carbonyl group, a carboxyl group, an ester group, a carbamoyl group, a nitro group, a silyl group, a siloxanyl group, a substituted or unsubstituted vinyl, arylamino or diarylamino group; a process for their preparation and their use for the preparation of inks, colorants, pigmented plastics for coatings, non-impact-printing material, color filters, cosmetics, or for the preparation of polymeric ink particles, toners, dye lasers and electroluminescent devices.Type: GrantFiled: June 20, 2002Date of Patent: June 20, 2006Assignee: Ciba Specialty Chemicals CorporationInventors: Hiroshi Yamamoto, Norihisa Dan, Olof Wallquist
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Patent number: 7060843Abstract: Electroluminescent device comprising in this order (a) an anode (b) a hole transporting layer (c) a light-emitting layer (d) optionally an electron transporting layer and (e) a cathode and a light-emitting substance, wherein the light-emitting substance is a diketopyrrolopyrrole represented by formula I or formula III processes for the preparation of compounds I, its uses and compositions comprising the compounds I and/or III.Type: GrantFiled: September 8, 2000Date of Patent: June 13, 2006Assignee: Ciba Specialty Chemicals CorporationInventors: Junji Otani, Hiroshi Yamamoto, Norihisa Dan, Abul Iqbal, Robert Moretti
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Patent number: 7001677Abstract: Electroluminescent device comprising in this order (a) an anode (b) a hole transporting layer (c) a light-emitting layer (d) optionally an electron transporting layer and (e) a cathode and a light-emitting substance, wherein the light-emitting substance is a diketopyrrolopyrrole represented by formula I or formula III processes for the preparation of compounds I, its uses and compositions comprising the compounds I and/or III.Type: GrantFiled: April 29, 2003Date of Patent: February 21, 2006Assignee: Ciba Specialty Chemicals CorporationInventors: Junji Otani, Hiroshi Yamamoto, Norihisa Dan, Abul Iqbal, Robert Moretti
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Publication number: 20050175856Abstract: Disclosed are electroluminescent devices that comprise organic layers that contain certain 2H-benzotriazole compounds. The 2H-benzotriazole compounds of blue-emitting, durable, organo-electrouminescent layers. The electroluminescent devices may be employed for full color display panels in for example mobile phones, televisions and personal computer screens.Type: ApplicationFiled: May 30, 2003Publication date: August 11, 2005Inventors: Jonathan Rogers, Anthony Debellis, Stephen Pastor, Norihisa Dan, Francois Maike
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Publication number: 20050008892Abstract: The present invention relates to compositions comprising a guest chromophore and a host chromophore, wherein the absorption spectrum of the guest chromophore overlaps with the fluorescence emission spectrum of the host chromophore, wherein the host chromophore is a diketopyrrolopyrrole having an absorption peak at 500 to 720 nm, preferably 500 to 600 nm, most preferred 520 to 580 nm and wherein the guest chromophore is a diketopyrrolopyrrole having an absorption peak at 500 to 720 nm, preferably 500 to 600 nm, most preferred 520 to 580 nm and their use for the preparation of inks, colorants, pigmented plastics for coatings, non-impact-printing material, color filters, cosmetics, polymeric ink particles, toners, dye lasers and electroluminescent devices. A luminescent device comprising a composition according to the present invention is high in the efficiency of electrical energy utilisation and high in luminance.Type: ApplicationFiled: January 23, 2003Publication date: January 13, 2005Inventors: Hiroshi Yamamoto, Norihisa Dan
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Publication number: 20040180235Abstract: The present invention relates to fluorescent diketopyrrolopyrroles (“DPPs”) of Formula (I), wherein A1 and A2 independently from each other stand for (II) wherein R1, R2 and R5 to R11 are as defined in claim 1, a process for their preparation and their use for the preparation of inks, colorants, pigmented plastics for coating, non-impact-printing material, color filters, cosmetics, or for the preparation of polymeric ink particles, toners, dye lasers and electroluminescent devices. The fluorescent diketopyrrolopyrroles (“DPPs”) of Formula (I) exhibit a high lightfastness, a high heat stability, especially in plastics. A luminescent device comprising a DPP compound of Formula (I) is high in the efficiency of electrical energy utilisation, high in luminance and high in colour purity.Type: ApplicationFiled: December 22, 2003Publication date: September 16, 2004Inventors: Hiroshi Yamamoto, Norihisa Dan, Olof Wallquist
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Publication number: 20040009368Abstract: Electroluminescent device comprising in this orderType: ApplicationFiled: April 29, 2003Publication date: January 15, 2004Inventors: Junji Otani, Hiroshi Yamamoto, Norihisa Dan, Abul Iqbal, Robert Moretti