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).

  • Patent number: 8506652
    Abstract: 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: Grant
    Filed: December 23, 2010
    Date of Patent: August 13, 2013
    Assignee: Colourtex Industries Limited
    Inventors: Pankaj Desai, Kiyoshi Himeno, Nikhil Desai, Jay Patel
  • Publication number: 20130117947
    Abstract: 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: Application
    Filed: December 23, 2010
    Publication date: May 16, 2013
    Applicant: COLOURTEX INDUSTRIES LIMITED
    Inventors: Pankaj Desai, Kiyoshi Himeno, Nikhil Desai, Jay Patel
  • Patent number: 8409300
    Abstract: Novel disperse azo dyes of formula (I), and processes for preparation thereof. These dyes possess superior washing fastness, sublimation fastness and light fastness.
    Type: Grant
    Filed: December 23, 2010
    Date of Patent: April 2, 2013
    Assignee: Colourtex Industries Limited
    Inventors: Pankaj Desai, Kiyoshi Himeno, Nikhil Desai
  • Publication number: 20120291207
    Abstract: Novel disperse azo dyes of formula (I), and processes for preparation thereof. These dyes possess superior washing fastness, sublimation fastness and light fastness.
    Type: Application
    Filed: December 23, 2010
    Publication date: November 22, 2012
    Applicant: COLOURTEX INDUSTRIES LIMITED
    Inventors: Pankaj Desai, Kiyoshi Himeno, Nikhil Desai
  • Patent number: 7101408
    Abstract: 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: Grant
    Filed: April 29, 2004
    Date of Patent: September 5, 2006
    Assignee: DyStar Textilfarben GmbH & Co. Deutschland KG
    Inventors: Kiyoshi Himeno, Shinsuke Ohno
  • Patent number: 7060807
    Abstract: 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: Grant
    Filed: September 22, 2004
    Date of Patent: June 13, 2006
    Assignee: DyStar Textilfarben GmbH & Co. Deutschland KG
    Inventor: Kiyoshi Himeno
  • Publication number: 20050070648
    Abstract: 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: Application
    Filed: September 22, 2004
    Publication date: March 31, 2005
    Applicant: DyStar Textilfarben GmbH & Co. Deutschland KG
    Inventor: Kiyoshi Himeno
  • Publication number: 20040226112
    Abstract: Disperse non-azo dyestuff mixture comprising:
    Type: Application
    Filed: April 29, 2004
    Publication date: November 18, 2004
    Applicant: DyStar Textilfarben GmbH & Co. Deutschland KG
    Inventors: Kiyoshi Himeno, Shinsuke Ohno
  • Patent number: 6121352
    Abstract: 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: Grant
    Filed: March 18, 1999
    Date of Patent: September 19, 2000
    Assignee: Dystar Textifarben GmbH & Co.
    Inventors: Manfred Hoppe, Kiyoshi Himeno, Ryouichi Sekioka
  • Patent number: 5744588
    Abstract: 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: Grant
    Filed: October 9, 1996
    Date of Patent: April 28, 1998
    Assignee: DyStar Japan Ltd.
    Inventors: Kiyoshi Himeno, Toshio Hihara, Yousuke Takahashi
  • Patent number: 5734028
    Abstract: 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: Grant
    Filed: October 18, 1996
    Date of Patent: March 31, 1998
    Assignee: DyStar Japan Ltd.
    Inventors: Kiyoshi Himeno, Toshio Hihara, Ryouchi Sekioka
  • Patent number: 5608042
    Abstract: 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: Grant
    Filed: January 31, 1996
    Date of Patent: March 4, 1997
    Assignee: Dystar Japan Ltd.
    Inventors: Kiyoshi Himeno, Toshio Hihara, Ryouichi Sekioka
  • Patent number: 5595575
    Abstract: 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: Grant
    Filed: November 8, 1995
    Date of Patent: January 21, 1997
    Assignee: DyStar Japan Ltd.
    Inventors: Kiyoshi Himeno, Toshio Hihara, Ryouichi Sekioka
  • Patent number: 5569309
    Abstract: 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: Grant
    Filed: May 19, 1995
    Date of Patent: October 29, 1996
    Assignee: Dystar Japan Ltd.
    Inventors: Toshio Hihara, Kiyoshi Himeno
  • Patent number: 5532344
    Abstract: 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: Grant
    Filed: March 29, 1993
    Date of Patent: July 2, 1996
    Assignee: Dystar Japan Ltd.
    Inventors: Kiyoshi Himeno, Toshio Hihara, Yoshiharu Hamano, Shinji Kubo
  • Patent number: 5527888
    Abstract: 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: Grant
    Filed: March 7, 1995
    Date of Patent: June 18, 1996
    Assignee: Dystar Japan Ltd.
    Inventors: Kiyoshi Himeno, Toshio Hihara, Ryouichi Sekioka
  • Patent number: 5505742
    Abstract: 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: Grant
    Filed: December 20, 1994
    Date of Patent: April 9, 1996
    Assignee: Dystar Japan Ltd.
    Inventors: Kiyoshi Himeno, Kazuhisa Konishi, Ryouichi Sekioka
  • Patent number: 5494493
    Abstract: 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: Grant
    Filed: November 22, 1994
    Date of Patent: February 27, 1996
    Assignee: Dystar Japan Ltd.
    Inventors: Kiyoshi Himeno, Toshio Hihara
  • Patent number: RE37004
    Abstract: 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: Grant
    Filed: August 22, 1997
    Date of Patent: December 26, 2000
    Assignee: Dystar Japan Ltd.
    Inventors: Yousuke Takahashi, Yukihara Shimizu, Toshio Hihara, Kiyoshi Himeno
  • Patent number: RE46018
    Abstract: 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: Grant
    Filed: January 10, 2014
    Date of Patent: May 31, 2016
    Assignee: DyStar Colours Distribution GmbH
    Inventors: Manfred Hoppe, Kiyoshi Himeno, Ryouichi Sekioka