Patents by Inventor Yukichi Murata
Yukichi Murata 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: 7025815Abstract: A water-soluble complex dye capable of forming an image having light resistance, ozone resistance and high saturation; a water-based recording fluid, particularly an ink jet recording fluid, employing such a dye; an ink set employing such a recording fluid; and an ink jet recording method, are presented.Type: GrantFiled: December 7, 2004Date of Patent: April 11, 2006Assignee: Mitsubishi Chemical CorporationInventors: Wataru Shimizu, Mio Ishida, Hideo Sano, Yukichi Murata
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Publication number: 20050081747Abstract: A water-soluble complex dye capable of forming an image having light resistance, ozone resistance and high saturation; a water-based recording fluid, particularly an ink jet recording fluid, employing such a dye; an ink set employing such a recording fluid; and an ink jet recording method, are presented. A water-soluble complex dye comprising an azo compound represented by the following formula (1) or its tautomer, and transition metal ions; a water-based recording fluid, particularly an ink jet recording fluid, containing such a dye; and an ink jet recording method employing such a recording fluid.Type: ApplicationFiled: December 7, 2004Publication date: April 21, 2005Applicant: MITSUBISHI CHEMICAL CORPORATIONInventors: Wataru Shimizu, Mio Ishida, Hideo Sano, Yukichi Murata
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Patent number: 6866706Abstract: A thermal transfer ink is provided, which includes: at least one dye (a); at least one dye selected from the group including dye (b), dye (c) and a mixture thereof; and a medium; wherein (a) is a dye having a pyrazolone methine skeleton, (b) is a dye having a quinophthalone skeleton, and (c) is a dye having an aminopyrazole azo skeleton.Type: GrantFiled: November 5, 2002Date of Patent: March 15, 2005Assignee: Mitsubishi Chemical CorporationInventors: Mio Ishida, Yukichi Murata
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Publication number: 20030183122Abstract: A thermal transfer ink is provided, which includes:Type: ApplicationFiled: November 5, 2002Publication date: October 2, 2003Applicant: MITSUBISHI CHEMICAL CORPORATIONInventors: Mio Ishida, Yukichi Murata
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Patent number: 6309807Abstract: A disazo dye for thermal transfer recording of the following formula (I): wherein each of rings A and B which are independent of each other, is a benzene ring which may have a substituent, R1 is a C1-4 substituted or unsubstituted alkyl group, and R2 is a group selected from the group consisting of a hydrogen atom and a C1-4 substituted or unsubstituted alkyl group.Type: GrantFiled: December 20, 1999Date of Patent: October 30, 2001Assignee: Mitsubishi Chemical CorporationInventors: Mio Ishida, Koji Maeda, Yukichi Murata
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Patent number: 5944882Abstract: A thermal transfer recording material for use in a recording apparatus in which said thermal transfer recording material is introduced into a transfer section having a porous structure by an effect of capillarity, subjected to a state transformation by heating, and then transferred to a recording medium disposed opposed to said transfer section, comprising:a dye having a melting point of 160.degree. C. or lower, selected from the group consisting of a dye represented by the general formula (I): ##STR1## wherein A.sup.1, R.sup.1 and R.sup.2 are as defined, and a dye represented by the general formula (II): ##STR2## wherein A.sup.2, R.sup.3 and R.sup.4 are as defined.Type: GrantFiled: September 3, 1997Date of Patent: August 31, 1999Assignees: Mitsubishi Chemical Corporation, Sony CorporationInventors: Kenji Shinozaki, Hideki Hirano, Yukichi Murata, Mio Ishida
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Patent number: 5935901Abstract: A thermal transfer recording material for use in a recording apparatus in which the thermal transfer recording material is introduced into a transfer section having a porous structure by an effect of capillarity, subjected to a state transformation by heating, and then transferred to a recording medium disposed in an opposed relation to the transfer section, comprising:a dye represented by the general formula (I): ##STR1## where R.sup.1 and R.sup.2 are individually a substituted or unsubstituted alkyl or alkenyl group, or a cycloalkyl group, and when both R.sup.1 and R.sup.2 are unsubstituted alkyl groups, at least one of R.sup.1 and R.sup.2 is a branched alkyl group.Type: GrantFiled: March 11, 1996Date of Patent: August 10, 1999Assignees: Sony Corporation, Mitsubishi Chemical CorporationInventors: Kenji Shinozaki, Hideki Hirano, Yukichi Murata, Mio Ishida, Miyuki Kuromiya
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Patent number: 5877301Abstract: A benzothiazole azo dye for thermal transfer recording of the following formula (I): ##STR1## wherein R.sup.1 is a C.sub.3-8 branched chain alkyl group, R.sup.2 is a substituted or unsubstituted alkyl group, X is a hydrogen atom, a lower alkyl group, a formylamino group, a lower alkylcarbonylamino group, a lower alkoxycarbonylamino group or a benzoylamino group, Y is a chlorine atom or a bromine atom, and Z is a hydrogen atom, a chlorine atom or a bromine atom.Type: GrantFiled: November 17, 1997Date of Patent: March 2, 1999Assignee: Mitsubishi Chemical CorporationInventors: Yukichi Murata, Mio Ishida
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Patent number: 5859092Abstract: A recording liquid containing an aqueous medium, a pigment and a polymer, wherein the polymer comprises at least one polymer containing a repeating unit A having at least one of a carboxyl group and an acid anhydride group and an allylether unit B of the formula (I), ##STR1## wherein R.sub.1 and R.sub.2 are a hydrogen atom or a substituted or unsubstituted C.sub.1 -C.sub.5 alkyl group, R.sub.3 is a hydrogen atom, an alkyl group, an alkylcarbonyl group, an alkenyl group, an alkenylcarbonyl group, an aryl group, an arylcarbonyl group, an aralkyl group, an aralkylcarbonyl group, a cycloalkyl group, a cycloalkylcarbonyl group, a heterocyclic group or a carbonyl group having a heterocyclic group, and these groups other than a hydrogen atom may have a substituent, and n is from 1 to 50.Type: GrantFiled: April 18, 1997Date of Patent: January 12, 1999Assignee: Mitsubishi Chemical CorporationInventors: Takashi Hirasa, Hiroshi Takimoto, Yukichi Murata, Hiroshi Mikami, Shoji Toki
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Patent number: 5713992Abstract: The present invention relates to a recording liquid characterized by comprising an aqueous medium and at least one monoazo dye selected from dyes, the free acid forms of which are represented by general formula {I}: ##STR1## (wherein R.sub.1, R.sub.2, and R.sub.3 each independently represents a substituted or unsubstituted alkyl group having 1 to 9 carbon atoms, an alkoxy group having 1 to 9 carbon atoms, a halogen atom, a hydrogen atom, a hydroxyl group, a substituted or unsubstituted carbamoyl group, a substituted or unsubstituted sulfamoyl group, a substituted or unsubstituted amino group, a nitro group, a sulfonic ester group, a sulfonyl group, a COOH group, or a carboxylic ester group;m represents a number of 0, 1, or 2; andR.sub.4, R.sub.5, R.sub.6, and R.sub.Type: GrantFiled: January 13, 1997Date of Patent: February 3, 1998Assignee: Mitsubishi Chemical CorporationInventors: Nobuyoshi Satoh, Takashi Hirasa, Yukichi Murata
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Patent number: 5630870Abstract: A thermal transfer recording material for use in a recording apparatus in which the thermal transfer recording material is introduced into a transfer section having a porous structure by an effect of capillarity, subjected to a state transformation such as vaporization or droplet formation by heating, and then transferred to a recording medium disposed opposed to the transfer section, comprising:a dye having a molecular weight of 400 or less and represented by the general formula (I): ##STR1## where A is a substituted or unsubstituted p-phenylene group, R.sup.1 and R.sup.2 are individually a hydrogen atom, a substituted or unsubstituted alkyl or alkenyl group, a cycloalkyl group or a substituted or unsubstituted phenyl group; and R.sup.1 may constitute a heterocyclic group composed of a five- or six-member ring in combination with the p-phenylene group A and a nitrogen atom adjacent to the p-phenylene group A, or another heterocyclic group composed of a five- or six-member ring in combination with R.sup.Type: GrantFiled: March 11, 1996Date of Patent: May 20, 1997Assignees: Sony Corporation, Mitsubishi Chemical CorporationInventors: Kenji Shinozaki, Hideki Hirano, Yukichi Murata, Mio Ishida
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Patent number: 5618337Abstract: A thermal transfer recording material for use in a recording apparatus in which the thermal transfer recording material is introduced into a transfer section having a porous structure by an effect of capillarity, subjected to a state transformation such as vaporization or droplet formation by heating, and then transferred to a recording medium disposed opposed to the transfer section, comprising:a dye having a melting point of 115.degree. C. or lower and represented by the general formula (I): ##STR1## where A is a substituted or unsubstituted p-phenylene group, R.sup.1 and R.sup.2 are individually a hydrogen atom, a substituted or unsubstituted alkyl or alkenyl group, a cycloalkyl group or a substituted or unsubstituted phenyl group; and R.sup.Type: GrantFiled: March 11, 1996Date of Patent: April 8, 1997Assignees: Sony Corporation, Mitsubishi Chemical CorporationInventors: Kenji Shinozaki, Hideki Hirano, Yukichi Murata, Mio Ishida
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Patent number: 5599386Abstract: A recording liquid comprising an aqueous medium and at least one selected from the compounds whose free acid form is represented by the formula {1}: ##STR1## wherein, R.sup.1, R.sup.2 and R.sup.3 each independently represent a substituted or unsubstituted C.sub.1-9 alkyl group, a C.sub.1-9 alkoxy group, a halogen, hydrogen, a hydroxyl group, a substituted or unsubstituted carbamoyl group, a substituted or unsubstituted sulfamoyl group, a substituted or unsubstituted amino group, a nitro group, a sulfonic ester group, a C.sub.1-9 alkyl- or C.sub.6-15 aryl-sulfonyl group, a COOH group or a carboxylic ester group;m is a number of 0, 1 or 2; andR.sup.4, R.sup.5 and R.sup.6 each independently represent hydrogen, a C.sub.1-18 alkyl group, a C.sub.2-18 alkenyl group, an aryl group, an aralkyl group, an alicyclic group or a heterocyclic group, any of which groups except hydrogen may have a substituent.Type: GrantFiled: May 4, 1995Date of Patent: February 4, 1997Assignee: Mitsubishi Chemical CorporationInventors: Hideo Sano, Yukichi Murata, Hiroshi Takimoto
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Patent number: 5480478Abstract: A recording liquid comprising an aqueous medium and at least one dye selected from dyes, a free acid form of which is represented by formula (I), (II), (III) or (VI), the symbols in the formulae being defined in the specification: ##STR1##Type: GrantFiled: November 29, 1994Date of Patent: January 2, 1996Assignee: Mitsubishi Chemical CorporationInventors: Hideo Sano, Yukichi Murata, Toru Nishimura, Masahiro Yamada, Hiroshi Takimoto, Nobuyoshi Satoh
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Patent number: 5478384Abstract: A recording liquid excellent in print quality, light resistance, and water resistance which is characterized in that it contains an aqueous medium and at least one dye selected from the dyes represented by general formulae [I] to [V]: ##STR1## (wherein R.sub.1 and R.sub.2 each represents H, CH.sub.3, or OCH.sub.3 ; R.sub.3 represents H, Cl,CH.sub.3, or OCH.sub.3 ; R.sub.4 represents an alkyl group having 1 to 6 carbon atoms, a phenyl group, a tolyl group, or an anisyl group; R.sub.5 represents H, a phenyl group which may be substituted with a COOM group, or an alkyl group having 1 to 3 carbon atoms which is substituted with a COOM group; R.sub.6 represents H or an alkyl group having 1 to 3 carbon atoms which is substituted with a COOM group; X represents SO.sub.3 M or COOM; Y represents --CO-- or --SO.sub.Type: GrantFiled: May 5, 1994Date of Patent: December 26, 1995Assignee: Mitsubishi Kasei CorporationInventors: Hiroshi Takimoto, Tomio Yoneyama, Hideo Sano, Yukichi Murata, Masahiro Yamada
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Patent number: 5437716Abstract: A recording liquid comprising an aqueous medium and at least one dye selected from dyes, free acid forms of which are represented by formulae (I) and (II): ##STR1## The symbols in formulae (I) and (II) are defined in the specification.Type: GrantFiled: May 13, 1994Date of Patent: August 1, 1995Assignee: Mitsubishi Kasei CorporationInventors: Hideo Sano, Tomio Yoneyama, Yukichi Murata, Masahiro Yamada
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Patent number: 5332712Abstract: An image receiving sheet for thermal transfer recording is described. The sheet contains a substrate and an image receiving layer formed thereon for receiving a sublimable dye. The image receiving layer contains, as its main component, a product formed by thermosetting a composition of an active hydrogen-containing resin, a modified silicone resin, a silicone oil and a polyfunctional isocyanate compound.Type: GrantFiled: February 12, 1993Date of Patent: July 26, 1994Assignee: Mitsubishi Kasei CorporationInventors: Hideo Shinohara, Yukichi Murata, Tsutomu Taki
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Patent number: 5292714Abstract: A dye transfer thermal printing sheet which can give a color record image excellent in color reproducibility and weather resistance with middle shade including black and sufficiently saturated density. This printing sheet includes a substrate on which are arranged, in face-sequence, coloring material layers which are different in hue and contain at least one dye represented by the formula (I), at least one dye represented by the formula (II) and at least one dye represented by the formula (III).Type: GrantFiled: February 10, 1993Date of Patent: March 8, 1994Assignees: Matsushita Electric Industrial Co., Ltd., Mitsubishi Kasei CorporationInventors: Tetsuji Kawakami, Akihiro Imai, Nobuyoshi Taguchi, Yukichi Murata, Takao Hirota
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Patent number: 5256492Abstract: A thermal transfer recording sheet comprising a base film and an ink layer comprising at least a heat transferable colorant and a binder resin, formed on one side of the base film, wherein the binder resin is a phenoxy resin having repeating structural units of the following formula (I): ##STR1## wherein X is a bivalent group represented by ##STR2## --O--, --S--, --SO-- or --SO.sub.2 --, each of R.sup.1 and R.sup.2 is a hydrogen atom, an alkyl group or an aryl group, R.sup.3 is an alkylene group, and each of benzene rings A and B may have an alkyl group or a halogen atom as a substituent.Type: GrantFiled: August 3, 1990Date of Patent: October 26, 1993Assignee: Mitsubishi Kasei CorporationInventors: Takao Hirota, Yukichi Murata, Tsutomu Taki, Hideo Shinohara
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Patent number: RE34737Abstract: A dye transfer sheet for heat-sensitive transfer recording which has an ink layer containing a sublimable dye formed on a base film, said sublimable dye being of the formula: ##STR1## wherein --B represents ##STR2## --Z.sup.1 and --Z.sup.2 each represents hydrogen, alkyl optionally substituted by fluorine, alkoxy, halogen or --NHB, K represents ##STR3## --R.sup.1, --R.sup.2, --R.sup.6 and --R.sup.7 each represents hydrogen, C.sub.1 -C.sub.8 substituted or unsubstituted alkyl, substituted or unsubstituted vinyl, allyl or aryl, --R.sup.3, --R.sup.4 and --R.sup.5 each represents hydrogen or methyl, --X represents hydrogen, alkyl optionally substituted by fluorine, alkoxy, formylamino, alkylcarbonylamino optionally substituted by fluorine, arylcarbonylamino or halogen, and --Y represents hydrogen, alkyl optionally substituted by fluorine, alkoxy or halogen.Type: GrantFiled: May 8, 1991Date of Patent: September 20, 1994Assignees: Mitsubishi Kasei Corporation, Matsushita Electric Industrial Co., Ltd.Inventors: Toshio Niwa, Yukichi Murata, Shuichi Maeda