Patents by Inventor Prahalad Manibhai Mistry
Prahalad Manibhai Mistry 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: 7638609Abstract: A compound of Formula (1) or salt thereof: wherein: A is optionally substituted phenyl or naphthyl; B is optionally substituted phenylene or naphthylene; n is 0 or 1; and D is a pyrazolyl group, with the proviso that when A is an optionally substituted phenyl group and B is a phenylene group of Formula T, wherein Ra is OH or a C1-4-alkoxy group; and Rb is H or a C1-4-alkyl group, hydroxy group, C1-4-alkoxy group, C1-3-dialkyamino group or a group of the formula NHCORc (wherein Rc is C1-3-alkyl or an amino group); and * shows the point of attachment to the azo linkages on B in Formula (1); A is free from nitro groups. Also, claimed are compounds, compositions and ink-jet cartridges for use in an ink-jet printer and substrate printed with an ink-jet printer.Type: GrantFiled: November 18, 2004Date of Patent: December 29, 2009Assignee: Fujifilm Imaging Colorants LimitedInventors: Prahalad Manibhai Mistry, Roy Bradbury
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Patent number: 7637992Abstract: A compound of Formula (1) and compounds of Formula (2) or a salt thereof: wherein: A is a beta naphthyl group of formula X, wherein * is the point of attachment to the azo group in Formula (1) or (2); p and q are each independently 0, 1 or 2 and the sum of p+q is not zero; B is optionally substituted phenylene or naphthylene; n is 0 or 1; and D is an optionally substituted pyrazolyl group. The compound or salt is useful in an ink for ink jet printing.Type: GrantFiled: April 27, 2007Date of Patent: December 29, 2009Assignee: Fujifilm Imaging Colorants LimitedInventor: Prahalad Manibhai Mistry
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Publication number: 20090208713Abstract: A compound selected from the group consisting of compounds of Formula (1) and compounds of Formula (2) or a salt thereof: wherein: A is an optionally substituted alpha naphthyl group of formula X, wherein * is the point of attachment to the azo group in Formula (1) or (2); B is optionally substituted phenylene or naphthylene; n is 0 or 1; and D is an optionally substituted pyrazolyl group. The compound is useful in an ink for ink jet printing. Also provided are printing processes, ink compositions and ink-jet cartridges for use in an ink-jet printer and substrates printed using an ink-jet printer.Type: ApplicationFiled: April 27, 2007Publication date: August 20, 2009Inventors: Prahalad Manibhai Mistry, Roy Bradbury, Lynn Patricia Bradbury
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Publication number: 20090041939Abstract: A compound selected from the group consisting of compounds of Formula (1) and compounds of Formula (2) or a salt thereof: wherein: A is a beta naphthyl group of formula X, wherein * is the point of attachment to the azo group in Formula (1) or (2) p and q are each independently 0, 1 or 2 and the sum of p+q is not zero; B is optionally substituted phenylene or naphthylene; n is 0 or 1; and D is an optionally substituted pyrazolyl group. The compound or salt is useful in an ink for ink jet printing. Also provided are printing processes, ink compositions and ink-jet cartridges for use in an ink-jet printer and substrates printed using an ink-jet printer.Type: ApplicationFiled: April 27, 2007Publication date: February 12, 2009Inventor: Prahalad Manibhai Mistry
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Patent number: 7052538Abstract: A composition comprising a liquid medium and a compound of Formula (1) or salt thereof: wherein: A is optionally substituted phenyl or naphthyl provided A is not 2-sulpho-4-methoxyphenyl; B is optionally substituted phenylene or naphthylene; n is 0 or 1; D is a pyrazolonyl group; and wherein the liquid medium comprises an organic solvent. Also claimed are inks comprising said compositions and processes for printing.Type: GrantFiled: May 8, 2003Date of Patent: May 30, 2006Assignee: Avecia LimitedInventors: Prahalad Manibhai Mistry, Roy Bradbury
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Patent number: 7041161Abstract: A composition comprising a liquid medium and a compound of Formula (1) or salt thereof: wherein: A is 2-sulpho-4-methoxyphenyl; B is optionally substituted phenylene or naphthylene; n is 0 or 1; and D is a pyrazolonyl group; wherein the liquid medium comprises an organic solvent, inks comprising this composition and printing processes.Type: GrantFiled: May 8, 2003Date of Patent: May 9, 2006Assignee: Avecia LimitedInventors: Prahalad Manibhai Mistry, Roy Bradbury
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Patent number: 6746526Abstract: 1. A compound of Formula (1) and salts thereof: wherein: A is a substituted phenyl group carrying a group of the formula —NR3R4 and an ortho group selected from sulpho, phosphonato and phosphinato; n is 0 or 1; L1 and L2 are each independently H, optionally substituted alkyl, optionally substituted cycloalkyl or optionally substituted aryl, or L1 and L2 together with the N atom to which they are attached form an optionally substituted 5- or 6-membered ring; R1 and R2 are each independently optionally substituted alkyl or optionally substituted alkoxy; and R3 and R4 are each independently H, optionally substituted alkyl, optionally substituted cycloalkyl or optionally substituted aryl, or R3 and R4 together with the nitrogen atom to which they are attached form an optionally substituted 5- or 6-membered ring; or R3 is H, optionally substituted alkyl, optionally substituted cycloalkyl or optionally substituted aryl and R4 is an acyl group.Type: GrantFiled: March 27, 2002Date of Patent: June 8, 2004Assignee: Avecia LimitedInventor: Prahalad Manibhai Mistry
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Patent number: 6712893Abstract: A compound of Formula (1) and salts thereof: In the formula, m is 1, 2 or 3; X is H or SO3H; R1 and R2 are each independently selected from optionally substituted alkyl and optionally substituted alkoxy; and R4 and R5 are each independently H, optionally substituted alkyl or optionally substituted aryl. When (i) at least one of R1 and R2 carries an —OH group; and (ii) when X is H at least one of R1 and R2 is optionally substituted alkyl. The compounds are useful as dyes for ink jet printing inks.Type: GrantFiled: June 28, 2001Date of Patent: March 30, 2004Assignee: Avecia LimitedInventors: Prahalad Manibhai Mistry, Roy Bradbury
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Patent number: 6695899Abstract: A compound of Formula (1) and salts thereof: wherein: A is a substituted phenyl group carrying a group of the formula —NR3R4 and an ortho carboxy group; n is 0 or 1; L1 and L2 are each independently H, optionally substituted alkyl, optionally substituted cycloalkyl or optionally substituted aryl, or L1 and L2 together with the N atom to which they are attached form an optionally substituted 5- or 6-membered ring; R1 and R2 are each independently optionally substituted alkyl or optionally substituted alkoxy; and R3 and R4 are each independently H, optionally substituted alkyl, optionally substituted cycloalkyl or optionally substituted aryl, or R3 and R4 together with the N atom to which they are attached form an optionally substituted 5- or 6-membered ring; or R3 is H, optionally substituted alkyl, optionally substituted cycloalkyl or optionally substituted aryl; and R4 is an acyl group.Type: GrantFiled: March 26, 2002Date of Patent: February 24, 2004Assignee: Avecia LimitedInventor: Prahalad Manibhai Mistry
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Patent number: 6689201Abstract: A compound of Formula (1) and salts thereof are useful as dyes for ink jet printing inks. In the formula (1), A is optionally substituted phenyl (other than carboxyl substituted); R1 and R2 are each independently optionally substituted alkyl or optionally substituted alkoxy; and R4 and R5 are each independently H, alkyl or optionally substituted aryl. In formula (1) at least one of R1 and R2 carries an —OH group.Type: GrantFiled: June 28, 2001Date of Patent: February 10, 2004Assignee: Avecia LimitedInventors: Prahalad Manibhai Mistry, Roy Bradbury
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Patent number: 6652637Abstract: A compound of Formula (1) and salts thereof are useful as dyes for ink jet printing inks. In Formula (I) m is 1, 2 or 3; R1 and R2 are each independently optionally substituted alkoxy; and R4 and R5 are each independently H, optionally substituted alkyl or optionally substituted aryl; provided that at least one of R1 and R2 carries an —OH group.Type: GrantFiled: June 28, 2001Date of Patent: November 25, 2003Assignee: Avecia LimitedInventors: Prahalad Manibhai Mistry, Roy Bradbury
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Patent number: 6559292Abstract: Compounds of Formula (1) and salts thereof: wherein: A is optionally substituted phenyl; R1 and R2 are each independently optionally substituted alkyl or optionally substituted alkoxy; and R4 and R5 are each independently H, optionally substituted alkyl or optionally substituted aryl; provided that (i) at least one of R1 and R2 carries an —OH group; and (ii) A is not of the formula: wherein m is 1, 2 or 3. The compounds are useful as dyes for ink jet printing inks.Type: GrantFiled: June 28, 2001Date of Patent: May 6, 2003Assignee: Avecia LimitedInventors: Prahalad Manibhai Mistry, Roy Bradbury
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Patent number: 6254669Abstract: A compound of the Formula (1) and salts thereof: wherein: Ar, Ar1, J, J1, X, X1 W, W1, L and m are as defined in the description. The compounds of Formula (1) are useful as additives in inks, especially ink jet printing inks, for reducing color bleed between adjacent printed regions. Also claimed are inks containing a compound of the Formula (1), a method of ink jet printing using the inks, a substrate printed with the ink and an ink jet printer cartridge containing the ink.Type: GrantFiled: August 5, 1999Date of Patent: July 3, 2001Assignee: Zeneca LimitedInventors: Aidan Joseph Lavery, Prahalad Manibhai Mistry, Ronald Wynford Kenyon
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Patent number: 6086955Abstract: A compound of the Formula (1) and salts thereof: ##STR1## wherein: M is a metal or hydrogen;Pc is a phthalocyanine nucleus;R.sup.1 and R.sup.2 are each independently H or optionally substituted alkyl, aryl or aralkyl;R.sup.3 is an aminoalkyl group;L is a divalent organic linking group;x and y each independently have a value of 0.5 to 3.5; and(x+y) is from 3 to 4.A process for making the compounds of Formula (1). The compounds of Formula (1) are useful as colorants for inks which are used in for example ink jet printing of substrates such as paper, plastics, textile materials, metal or glass.Type: GrantFiled: April 7, 1998Date of Patent: July 11, 2000Assignee: Zeneca LimitedInventors: Prahalad Manibhai Mistry, Ronald Wynford Kenyon
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Patent number: 6025486Abstract: A compound of formula (1) and salts thereof, wherein: M is a metal or hydrogen; Pc is a phthalocyanine nucleus; each R.sup.1 independently is H or optionally substituted alkyl aryl or aralkyl; each L.sup.1 independently is a divalent organic linking group; Z is an optionally substituted piperazinyl group; q is 1 or 2; x and y each independently have a value of 0.5 to 3.5; and (x+y) is from 2 to 5. A process for making the compounds of formula (1). The compounds of formula (1) are useful as colorants for inks which are used in for example ink jet printing of substrates such as paper, plastics, textile materials, metal or glass.Type: GrantFiled: April 7, 1998Date of Patent: February 15, 2000Assignee: Zeneca LimitedInventors: Prahalad Manibhai Mistry, Ronald Wynford Kenyon
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Patent number: 6015896Abstract: A compound of formula (1) and salts thereof, wherein: M is a metal or hydrogen; Pc is phthalocyanine nucleus; R.sup.1, R.sup.2, W.sup.1 and W.sup.2 are each independently H or optionally substituted alkyl, aryl or aralkyl; R.sup.3 is an aminoalkyl group; L is a divalent organic linking group; x, y and t are each independently 0.5 to 2.5; and (x+y+t) is from 3 to 4. A process for making the compounds of formula (1). The compounds of formula (1) are useful as colorants for inks which are used in for example ink jet printing of substrates such as paper, plastics, textile materials, metal or glass.Type: GrantFiled: April 7, 1998Date of Patent: January 18, 2000Assignee: Zeneca LimitedInventors: Prahalad Manibhai Mistry, Ronald Wynford Kenyon
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Patent number: 5922116Abstract: A compound of the Formula (1) and salts thereof: ##STR1## wherein: M is a metal or hydrogen;Pc is a phthalocyanine nucleus;each R.sup.1,W.sup.1 and W.sup.2 independently is H or optionally substituted alkyl, aryl or aralkyl;each L.sup.1 independently is a divalent organic linking group;Z is an optionally substituted piperazinyl group;q is 1 or 2;x,y and t each independently have a value of 0.5 to 2.5; and(x+y+t)is 3 to 4.A process for making the compounds of Formula (1). The compounds of Formula (1) are useful as colorants for inks which are used in for example ink jet printing of substrates such as paper, plastics, textile materials, metal or glass.Type: GrantFiled: April 7, 1998Date of Patent: July 13, 1999Assignee: Zeneca LimitedInventors: Prahalad Manibhai Mistry, Ronald Wynford Kenyon
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Patent number: 5891230Abstract: A bisazo dye of Formula (1) and salts thereof: ##STR1## in which R is H;R.sub.1 and R.sub.2 each independently is H, optionally substituted C.sub.1-4 -alkyl or optionally substituted aryl;R.sub.3 and R.sub.4 are each independently --OC.sub.1-4 -alkyl;R.sub.5 is H;R.sub.6 is COOH; andn is 1, 2 or 3.The dyes are useful for ink jet printing.Type: GrantFiled: October 9, 1997Date of Patent: April 6, 1999Assignee: Zeneca LimitedInventors: Peter Gregory, Prahalad Manibhai Mistry, Roy Bradbury, Paul Wight
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Patent number: 5888286Abstract: A bisazo dye of Formula (1) and salts thereof: ##STR1## wherein: R.sub.1 and R.sub.2 each independently is H, optionally substituted C.sub.1-4 -alkyl or optionally substituted aryl;R.sub.3 is --NH.sub.2 ;R.sub.4 is OC.sub.1-4 -alkyl;each R.sub.5 independently is --COOH or --SO.sub.3 H; andn is 1,2, or 3.Also claimed are inks containing the dye, a process of ink jet printing using the inks and substrates coloured by the inks.Type: GrantFiled: October 9, 1997Date of Patent: March 30, 1999Assignee: Zeneca LimitedInventors: Peter Gregory, Prahalad Manibhai Mistry, Roy Bradbury, Paul Wight
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Patent number: 5882392Abstract: A dye of Formula (1) and salts thereof: ##STR1## in which R is H, --NHC.sub.1-4 -alkylN(C.sub.1-4 -alkyl).sub.2 or ##STR2## R.sub.1 and R.sub.2 each independently is H, optionally substituted C.sub.1-4 -alkyl or optionally substituted aryl;R.sub.3 is C.sub.1-4 -alkyl;R.sub.4 is C.sub.1-4 -alkyl or OC.sub.1-4 -alkyl;R.sub.5 is H;R.sub.6 is COOH; andn is 1, 2 or 3.The dyes are useful for preparing ink jet printer inks.Type: GrantFiled: October 9, 1997Date of Patent: March 16, 1999Assignee: Zeneca LimitedInventors: Peter Gregory, Prahalad Manibhai Mistry, Roy Bradbury, Paul Wight