Patents by Inventor Kiyoshi Himeno
Kiyoshi Himeno 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: 8506652Abstract: The present invention is directed to a disperse dye of formula (1) Wherein, X, Y and Z are, independently, hydrogen, halogen, cyano, nitro or SO2F; Wherein at least one of X, Y and Z is SO2F. R1 is hydrogen, methyl, hydroxyl or NHR4; R2 is hydrogen, chloro or methoxy; R3 is hydrogen, (C1-C4)-alkyl or —CH2(CH2)nCOOCH2CN; R5 is hydrogen, (C1-C4)-alkyl or —CH2(CH2)mCOOCH2CN; R4 is —COCH3, —CO C2H5, —SO2CH3 or SO2C2H5; n and m are independently 0,1 or 2, with the proviso: —When, Y and Z both are Cl, R1 is other than methyl. When, R2 is Hydrogen and R3, R4 both are alkyl, R1 is selected from NHSO2CH3 or NHSO2C2H5. Disperse dyes of Formula (I) have excellent washing fastness and light fastness on polyester fiber and polyester blends.Type: GrantFiled: December 23, 2010Date of Patent: August 13, 2013Assignee: Colourtex Industries LimitedInventors: Pankaj Desai, Kiyoshi Himeno, Nikhil Desai, Jay Patel
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Publication number: 20130117947Abstract: The present invention is directed to a disperse dye of formula (1) Wherein, X, Y and Z are, independently, hydrogen, halogen, cyano, nitro or SO2F; Wherein at least one of X, Y and Z is SO2F. R1 is hydrogen, methyl, hydroxyl or NHR4; R2 is hydrogen, chloro or methoxy; R3 is hydrogen, (C1-C4)-alkyl or —CH2(CH2)nCOOCH2CN; R5 is hydrogen, (C1-C4)-alkyl or —CH2(CH2)mCOOCH2CN; R4 is —COCH3, —CO C2H5, —SO2CH3 or SO2C2H5; n and m are independently 0,1 or 2, with the proviso: When, Y and Z both are Cl, R1 is other than methyl. When, R2 is Hydrogen and R3, R4 both are alkyl, R1 is selected from NHSO2CH3 or NHSO2C2H5. Disperse dyes of Formula (I) have excellent washing fastness and light fastness on polyester fiber and polyester blends.Type: ApplicationFiled: December 23, 2010Publication date: May 16, 2013Applicant: COLOURTEX INDUSTRIES LIMITEDInventors: Pankaj Desai, Kiyoshi Himeno, Nikhil Desai, Jay Patel
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Patent number: 8409300Abstract: Novel disperse azo dyes of formula (I), and processes for preparation thereof. These dyes possess superior washing fastness, sublimation fastness and light fastness.Type: GrantFiled: December 23, 2010Date of Patent: April 2, 2013Assignee: Colourtex Industries LimitedInventors: Pankaj Desai, Kiyoshi Himeno, Nikhil Desai
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Publication number: 20120291207Abstract: Novel disperse azo dyes of formula (I), and processes for preparation thereof. These dyes possess superior washing fastness, sublimation fastness and light fastness.Type: ApplicationFiled: December 23, 2010Publication date: November 22, 2012Applicant: COLOURTEX INDUSTRIES LIMITEDInventors: Pankaj Desai, Kiyoshi Himeno, Nikhil Desai
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Patent number: 7101408Abstract: Disperse non-azo dyestuff mixture comprising: a blue dye mixture comprising a compound of the following formula (1) at least one compound of the following formula (2) wherein R1 is C1–C4 alkyl such as methyl, ethyl n-propyl, isopropyl, n-butyl, isobutyl, sec-butyl or tert-butyl, 3-methoxypropyl, 3-ethoxypropyl and 3-methoxyethoxypropyl and a compound of the following formula (3) a yellow dyestuff mixture comprising a compound of the formula (4) a compound of the following formula (5) and compound of the following formula (6) wherein R2 is methyl and ethyl; and a red dye mixture comprising a compound of the following formula (7) a compound of the following formula (8) and a compound of the following formula (9) a method for the preparation of such mixtures and a method for coloring a synthetic textile material or fiber blend thereof using such mixtures.Type: GrantFiled: April 29, 2004Date of Patent: September 5, 2006Assignee: DyStar Textilfarben GmbH & Co. Deutschland KGInventors: Kiyoshi Himeno, Shinsuke Ohno
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Patent number: 7060807Abstract: Monoazo dyestuffs of the general formula (1) wherein R1, R2, R3 and n are as defined in claim 1, method for their preparation and a method for colouring a synthetic textile material or fiber blend thereof using such dyestuffs.Type: GrantFiled: September 22, 2004Date of Patent: June 13, 2006Assignee: DyStar Textilfarben GmbH & Co. Deutschland KGInventor: Kiyoshi Himeno
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Publication number: 20050070648Abstract: Monoazo dyestuffs of the general formula (1) wherein R1, R2, R3 and n are as defined in claim 1, method for their preparation and a method for colouring a synthetic textile material or fibre blend thereof using such dyestuffs.Type: ApplicationFiled: September 22, 2004Publication date: March 31, 2005Applicant: DyStar Textilfarben GmbH & Co. Deutschland KGInventor: Kiyoshi Himeno
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Publication number: 20040226112Abstract: Disperse non-azo dyestuff mixture comprising:Type: ApplicationFiled: April 29, 2004Publication date: November 18, 2004Applicant: DyStar Textilfarben GmbH & Co. Deutschland KGInventors: Kiyoshi Himeno, Shinsuke Ohno
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Patent number: 6121352Abstract: The present invention relates to dye mixtures comprising at least one compound of the formula (I) ##STR1## and at least one compound of the formula (II) ##STR2## where the substituents are each as defined in the description part, which are highly useful for dyeing and printing hydrophobic synthetic material.Type: GrantFiled: March 18, 1999Date of Patent: September 19, 2000Assignee: Dystar Textifarben GmbH & Co.Inventors: Manfred Hoppe, Kiyoshi Himeno, Ryouichi Sekioka
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Patent number: 5744588Abstract: A blue type disperse dye mixture comprising 1.0 part by weight of at least one dye of the formula (1), from 0 to 0.2 part by weight of at least one dye of the formula (2), from 0.05 to 1.0 part by weight of at least one dye of the formula (3) and from 0.05 to 1.0 part by weight of at least one dye of the formula (4): ##STR1## wherein X is a chlorine atom or a bromine atom, R.sup.1 is a C.sub.1-5 alkyl group, R.sup.2 is a C.sub.1-4 alkyl group, and R.sup.3 is a C.sub.1-5 alkyl group or an allyl group, provided that R.sup.1, R.sup.2 and R.sup.3 may, respectively, be the same or different among the formulae (1) to (4).Type: GrantFiled: October 9, 1996Date of Patent: April 28, 1998Assignee: DyStar Japan Ltd.Inventors: Kiyoshi Himeno, Toshio Hihara, Yousuke Takahashi
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Patent number: 5734028Abstract: A blue type disperse dye mixture comprising a monoazo dye of the formula (1) in an amount of 1.0 part by weight and at least one of anthraquinone dyes of the formulae (2) to (4) in a total amount of from 0.2 to 3.Type: GrantFiled: October 18, 1996Date of Patent: March 31, 1998Assignee: DyStar Japan Ltd.Inventors: Kiyoshi Himeno, Toshio Hihara, Ryouchi Sekioka
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Patent number: 5608042Abstract: A monoazo dye of the following formula (I): ##STR1## wherein R is phenyl, phenoxy or benzyl, and D is a group of the formula (D1), (D2), (D3) or (D4): ##STR2## wherein each of X.sup.1, X.sup.2 and X.sup.3, which are independent of one another, is hydrogen or chlorine, X.sup.4 is hydrogen, chlorine, methyl or --NHCOR.sup.1, wherein R.sup.1 is C.sub.1-4 alkyl or phenyl; ##STR3## wherein X.sup.4 is as defined above, Y.sup.1 is hydrogen, chlorine or C.sub.1-4 alkoxy; ##STR4## wherein X.sup.5 is hydrogen, halogen, methyl or --NHZ, wherein Z is C.sub.1-4 alkylsurfonyl, C.sub.1-4 alkylcarbonyl, phenylsulfonyl, phenylcarbonyl, C.sub.1-2 alkoxy C.sub.1-2 alkylcarbonyl or aminocarbonyl, Y.sup.2 is hydrogen, methyl or C.sub.1-2 alkoxy, and Q.sup.1 is cyano or C.sub.1-4 alkylcarbonyl; ##STR5## wherein P is formyl, nitro or cyano, Q.sup.2 is cyano or nitro, T is halogen, methyl, phenyl or methylsulfonyl, X.sup.5 is as defined above, and Y.sup.3 is hydrogen or C.sub.1-2 alkoxy.Type: GrantFiled: January 31, 1996Date of Patent: March 4, 1997Assignee: Dystar Japan Ltd.Inventors: Kiyoshi Himeno, Toshio Hihara, Ryouichi Sekioka
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Patent number: 5595575Abstract: A blue disperse dye mixture comprising a monoazo dye of the following formula (1) and at least one azo dye selected from the group consisting of dyes of the following formulas (2), (3), (4) and (5): ##STR1## wherein each of the variables is defined in the specification.Type: GrantFiled: November 8, 1995Date of Patent: January 21, 1997Assignee: DyStar Japan Ltd.Inventors: Kiyoshi Himeno, Toshio Hihara, Ryouichi Sekioka
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Patent number: 5569309Abstract: A dye composition containing at least one turquoise blue monoazo dye of the formula (I): ##STR1## and at least one additional dye which is at least one yellow monoazo dye of the formula (II): ##STR2## or at least one blue anthraquinone dye of the formula (III): ##STR3## or at least one navy blue dye of the formula (IV): ##STR4##Type: GrantFiled: May 19, 1995Date of Patent: October 29, 1996Assignee: Dystar Japan Ltd.Inventors: Toshio Hihara, Kiyoshi Himeno
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Patent number: 5532344Abstract: A process for producing a monoazodye of the following formula (III): ##STR1## wherein X.sup.1 is nitro or halogen, X.sup.2 is halogen, R.sup.1 is lower alkoxy, R.sup.2 is lower alkyl, each of R.sup.3 and R.sup.4, which are independent of each other, is alkyl, cyanoalkyl or alkylcarbonyloxyalkyl, and each of m and n, which are independent of each other, is 0 or 1, which comprises diazotizing an aniline derivative of the following formula (I): ##STR2## wherein X.sup.1 and X.sup.2 are as defined above, followed by coupling with an aniline derivative of the following formula (II): ##STR3## wherein R.sup.1, R.sup.2, R.sup.3, R.sup.4, m and n are as defined above, wherein a reaction mixture obtained by the coupling reaction is heat-treated in the presence of a polyoxyethylene higher fatty acid ester type nonionic surfactant, followed by filtration to obtain said monoazo compound in the form of a cake.Type: GrantFiled: March 29, 1993Date of Patent: July 2, 1996Assignee: Dystar Japan Ltd.Inventors: Kiyoshi Himeno, Toshio Hihara, Yoshiharu Hamano, Shinji Kubo
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Patent number: 5527888Abstract: A monoazo dye of the following formula (I): ##STR1## wherein R is phenyl, phenoxy or benzyl, and D is a group of the formula (D1), (D2), (D3) or (D4): ##STR2## wherein each of X.sup.1, X.sup.2 and X.sup.3, which are independent of one another, is hydrogen or chlorine, X.sup.4 is hydrogen, chlorine, methyl or --NHCOR.sup.1, wherein R.sup.1 is C.sub.1-4 alkyl or phenyl; ##STR3## wherein X.sup.4 is as defined above, Y.sup.1 is hydrogen, chlorine or C.sub.1-4 alkoxy; ##STR4## wherein X.sup.5 is hydrogen, halogen, methyl or --NHZ, wherein Z is C.sub.1-4 alkylsulfonyl, C.sub.1-4 alkylcarbonyl, phenylsulfonyl, phenylcarbonyl, C.sub.1-2 alkoxy C.sub.1-2 alkylcarbonyl or aminocarbonyl, Y.sup.2 is hydrogen, methyl or C.sub.1-2 alkoxy, and Q.sup.1 is cyano or C.sub.1-4 alkylcarbonyl; ##STR5## wherein P is formyl, nitro or cyano, Q.sup.2 is cyano or nitro, T is halogen, methyl, phenyl or methylsulfonyl, X.sup.5 is as defined above, and Y.sup.3 is hydrogen or C.sub.1-2 alkoxy.Type: GrantFiled: March 7, 1995Date of Patent: June 18, 1996Assignee: Dystar Japan Ltd.Inventors: Kiyoshi Himeno, Toshio Hihara, Ryouichi Sekioka
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Patent number: 5505742Abstract: A method for dyeing hydrophobic fibers black, wherein a mixed black dye is used which comprises a blue color component containing at least 70 wt % of a disperse dye of the following formula (I): ##STR1## wherein X is a chlorine atom or a bromine atom, and R is a methyl group or an ethyl group.Type: GrantFiled: December 20, 1994Date of Patent: April 9, 1996Assignee: Dystar Japan Ltd.Inventors: Kiyoshi Himeno, Kazuhisa Konishi, Ryouichi Sekioka
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Patent number: 5494493Abstract: A disperse dye mixture comprising dye (I) and dye (II) blended at a ratio of from 0.1 to 10 times by weight of dye (II) to dye (I): ##STR1## wherein X is halogen, nitro, cyano, thiocyanate, methylsulfonyl, C.sub.1 or C.sub.2 alkylcarbonyl, C.sub.1 -C.sub.4 alkoxycarbonyl or vinylsulfonyl, Y is hydrogen, halogen, cyano, trifluoromethyl or methylsulfonyl, W is hydrogen, halogen, C.sub.1 or C.sub.2 alkyl or C.sub.1 or C.sub.2 alkoxy, and each of R.sup.1 and R.sup.2 which are independent of each other, is hydrogen, C.sub.1 --C.sub.8 alkyl, or C.sub.2 -C.sub.4 alkyl substituted by halogen, hydroxyl, cyano, alkoxy, alkoxyalkoxy, a hydroxyalkoxy, hydroxyalkoxyalkoxy, acyloxyalkoxy or acyloxyalkoxyalkoxy, provided that each alkoxy has from 1 to 4 carbon atoms.Type: GrantFiled: November 22, 1994Date of Patent: February 27, 1996Assignee: Dystar Japan Ltd.Inventors: Kiyoshi Himeno, Toshio Hihara
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Patent number: RE37004Abstract: A water-soluble monoazodye having the following formula (I) in its free acid form: ##STR1## wherein X is --CH.dbd.CH.sub.2 or --CH.sub.2 CH.sub.2 W wherein W is a leaving group removable by alkali; R.sup.1 is methyl, --NHCONH.sub.2 or --NHCOT.sup.1 wherein T.sup.1 is methyl, ethyl, --CH.sub.2 CH.sub.2 COOH or --CH.dbd.CHCOOH; R.sup.2 is hydrogen, lower alkyl or lower alkoxy; and Z is ##STR2## wherein P is cyano or halogen, each of Q and U which are independent of each other, is halogen, V is halogen or ##STR3## and Y is halogen or a group of the following formula (1) or (2): ##STR4## wherein R.sup.3, A, R.sup.4 and E are as defined in the disclosure and G is as defined above, has a moderate yellow to orange color and is particularly suitable for dyeing cellulose fibers or nitrogen-containing fibers.Type: GrantFiled: August 22, 1997Date of Patent: December 26, 2000Assignee: Dystar Japan Ltd.Inventors: Yousuke Takahashi, Yukihara Shimizu, Toshio Hihara, Kiyoshi Himeno
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Patent number: RE46018Abstract: The present invention relates to dye mixtures comprising at least one compound of the formula (I) and at least one compound of the formula (II) where the substituents are each as defined in the description part, which are highly useful for dyeing and printing hydrophobic synthetic material.Type: GrantFiled: January 10, 2014Date of Patent: May 31, 2016Assignee: DyStar Colours Distribution GmbHInventors: Manfred Hoppe, Kiyoshi Himeno, Ryouichi Sekioka