Patents by Inventor Puthalath K. Sujeeth
Puthalath K. Sujeeth 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: 9221986Abstract: A method of modifying a particle that includes reacting a reactive compound having an X—[Y]n reactive group with a secondary compound N—S-ZM to form a substituted reactive intermediate [Y]a—X—(N—S-ZM)b, and reacting the particle with the substituted reactive intermediate [Y]a—X—(N—S-ZM)b to attach the substituted reactive intermediate to the surface of the particle to form a surface modified particle. The particle may comprise at least one of a dye particle, an inorganic pigment particle, an additive, or a combination thereof. X may be a sulfonyl, phosphoryl, or 1,3,5-triazinyl group. Y may be a halogen leaving group. N may be a nucleophilic group. S may be an organic group. ZM may be an ionizable end group. Also, n is an integer between 1 and 3, b is an integer between 1 and 3, and a=n?b. When n is equal to or greater than b, and wherein if b is 2 or 3, each N—S-ZM can be the same or different.Type: GrantFiled: April 7, 2010Date of Patent: December 29, 2015Assignee: Sensient Colors LLCInventors: Puthalath K. Sujeeth, John P. Kane, Daniel A. Ouellette, Mark Ulrich
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Patent number: 8226761Abstract: A method of modifying a pigment that includes reacting a reactive compound having an X—[Y]n reactive group with a secondary compound N—S—ZM to form a substituted reactive intermediate [Y]a—X—(N—S—ZM)b. A pigment is reacted with the substituted reactive intermediate [Y]a—X—(N—S—ZM)b to attach the substituted reactive intermediate to the surface of the pigment to form a surface modified pigment. X may be a sulfonyl, phosphoryl, or 1,3,5-triazinyl group, Y may be a halogen leaving group, N may be a basic nucleophilic group, S may be an organic group, and ZM may be an ionizable end group. Also, n is an integer between 1 and 3, b is an integer between 1 and 3, and a=n?b. When n is equal to or greater than b, and if b is 2 or 3, each N—S—ZM can be the same or different.Type: GrantFiled: January 20, 2012Date of Patent: July 24, 2012Assignee: Sensient Colors LLCInventors: Puthalath K. Sujeeth, John P. Kane, Daniel A. Ouellette, Mark Ulrich, Vincent Shing, Michael Bogomolny
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Publication number: 20120118205Abstract: A method of modifying a pigment that includes reacting a reactive compound having an X—[Y]n reactive group with a secondary compound N—S—ZM to form a substituted reactive intermediate [Y]a—X—(N—S—ZM)b. A pigment is reacted with the substituted reactive intermediate [Y]a—X—(N—S—ZM)b to attach the substituted reactive intermediate to the surface of the pigment to form a surface modified pigment. X may be a sulfonyl, phosphoryl, or 1,3,5-triazinyl group, Y may be a halogen leaving group, N may be a basic nucleophilic group, S may be an organic group, and ZM may be an ionizable end group. Also, n is an integer between 1 and 3, b is an integer between 1 and 3, and a=n?b. When n is equal to or greater than b, and if b is 2 or 3, each N—S—ZM can be the same or different.Type: ApplicationFiled: January 20, 2012Publication date: May 17, 2012Inventors: Puthalath K. Sujeeth, John P. Kane, Daniel A. Ouellette, Mark Ulrich, Vincent Shing, Michael Bogomolny
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Patent number: 8163075Abstract: An ink composition that includes a self-dispersing pigment that has about 0.02 to about 1.0 mMoles of S and about 0.2 to about 2.0 mMoles of active hydrogen per gram of pigment, water, and an organic solvent. A method of making an ink composition that includes sulfonating a pigment, subsequently oxidizing the pigment to produce a modified pigment, and incorporating the modified pigment into an ink.Type: GrantFiled: October 31, 2007Date of Patent: April 24, 2012Assignee: Sensient Colors LLCInventors: Jeff Kennedy, Diane V. Graff, Daniel F. Gloster, Michael Bogomolny, Puthalath K. Sujeeth, Ryan Cross
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Patent number: 8147608Abstract: A method of producing a modified pigment by sulfonating a pigment and subsequently oxidizing the pigment. The modified pigment may have sulfonic acid and carboxyl surface modifying groups attached to the surface of the pigment. Charge balancing counterions such as alkali metals, alkaline earth metals and NR1R2R3H+, where R1, R2 and R3 are independently H or C1-C5 alkyl groups, may be associated with the surface modifying groups. The modified pigment is combined with water to produce a dispersion that can be used in such applications as coatings, paints, papers, adhesives, latexes, toners, textiles, fibers, plastics and inks.Type: GrantFiled: March 8, 2011Date of Patent: April 3, 2012Assignee: Sensient Colors LLCInventors: Puthalath K. Sujeeth, Mark Ulrich, Gabe Srouji, John P. Kane, Daniel A. Ouellette
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Patent number: 8118924Abstract: A method of modifying a pigment that includes reacting a reactive compound having an X—[Y]n reactive group with a secondary compound N—S—ZM to form a substituted reactive intermediate [Y]a—X—(N—S—ZM)b. A pigment is reacted with the substituted reactive intermediate [Y]a—X—(N—S—ZM)b to attach the substituted reactive intermediate to the surface of the pigment to form a surface modified pigment. X may be a sulfonyl, phosphoryl, or 1,3,5-triazinyl group, Y may be a halogen leaving group, N may be a basic nucleophilic group, S may be an organic group, and ZM may be an ionizable end group. Also, n is an integer between 1 and 3, b is an integer between 1 and 3, and a=n?b. When n is equal to or greater than b, and if b is 2 or 3, each. N—S—ZM can be the same or different.Type: GrantFiled: May 17, 2011Date of Patent: February 21, 2012Assignee: Sensient Colors LLCInventors: Puthalath K. Sujeeth, John P. Kane, Daniel A. Ouellette, Mark Ulrich, Vincent Shing, Michael Bogomolny
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Publication number: 20110308430Abstract: A method of modifying a pigment that includes reacting a reactive compound having an X-[Y]n reactive group with a secondary compound N-S-ZM to form a substituted reactive intermediate [Y]aX-(N-S-ZM)b. A pigment is reacted with the substituted reactive intermediate [Y]a-X-(N-S-ZM)b to attach the substituted reactive intermediate to the surface of the pigment to form a surface modified pigment. X may be a sulfonyl, phosphoryl, or 1,3,5-triazinyl group, Y may be a halogen leaving group, N may be a basic nucleophilic group, S may be an organic group, and ZM may be an ionizable end group. Also, n is an integer between 1 and 3, b is an integer between 1 and 3, and a=n?b. When n is equal to or greater than b, and if b is 2 or 3, each. N-S-ZM can be the same or different.Type: ApplicationFiled: May 17, 2011Publication date: December 22, 2011Inventors: Puthalath K. Sujeeth, John P. Kane, Daniel A. Ouellette, Mark Ulrich, Vincent Shing, Michael Bogomolny
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Publication number: 20110239903Abstract: A method of producing a modified pigment by sulfonating a pigment and subsequently oxidizing the pigment. The modified pigment may have sulfonic acid and carboxyl surface modifying groups attached to the surface of the pigment. Charge balancing counterions such as alkali metals, alkaline earth metals and NR1R2R3H+, where R1, R2 and R3 are independently H or C1-C5 alkyl groups, may be associated with the surface modifying groups. The modified pigment is combined with water to produce a dispersion that can be used in such applications as coatings, paints, papers, adhesives, latexes, toners, textiles, fibers, plastics and inks.Type: ApplicationFiled: March 8, 2011Publication date: October 6, 2011Inventors: Puthalath K. Sujeeth, Mark Ulrich, Gabe Srouji, John Kane, Daniel A. Ouellette
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Patent number: 7964033Abstract: A method of modifying a pigment that includes reacting a reactive compound having an X-[Y]n reactive group with a secondary compound N-S-ZM to form a substituted reactive intermediate [Y]a-X-(N-S-ZM)b. A pigment is reacted with the substituted reactive intermediate [Y]a-X-(N-S-ZM)b to attach the substituted reactive intermediate to the surface of the pigment to form a surface modified pigment. X may be a sulfonyl, phosphoryl, or 1,3,5-triazinyl group, Y may be a halogen leaving group, N may be a basic nucleophilic group, S may be an organic group, and ZM may be an ionizable end group. Also, n is an integer between 1 and 3, b is an integer between 1 and 3, and a=n?b. When n is equal to or greater than b, and if b is 2 or 3, each N-S-ZM can be the same or different.Type: GrantFiled: August 22, 2008Date of Patent: June 21, 2011Assignee: Sensient Colors LLCInventors: Puthalath K. Sujeeth, John P. Kane, Daniel A. Ouellette, Mark Ulrich, Vincent Shing, Michael Bogomolny
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Patent number: 7927416Abstract: A method of producing a modified pigment by sulfonating a pigment and subsequently oxidizing the pigment. The modified pigment may have sulfonic acid and carboxyl surface modifying groups attached to the surface of the pigment. Charge balancing counterions such as alkali metals, alkaline earth metals and NR1R2R3H+, where R1, R2 and R3 are independently H or C1-C5 alkyl groups, may be associated with the surface modifying groups. The modified pigment is combined with water to produce a dispersion that can be used in such applications as coatings, paints, papers, adhesives, latexes, toners, textiles, fibers, plastics and inks.Type: GrantFiled: October 31, 2007Date of Patent: April 19, 2011Assignee: Sensient Colors Inc.Inventors: Puthalath K. Sujeeth, Mark Ulrich, Gabe Srouji, John P. Kane, Daniel A. Ouellette
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Publication number: 20100251932Abstract: A method of modifying a particle that includes reacting a reactive compound having an X—[Y]n reactive group with a secondary compound N—S-ZM to form a substituted reactive intermediate [Y]a—X—(N—S-ZM)b, and reacting the particle with the substituted reactive intermediate [Y]a—X—(N—S-ZM)b to attach the substituted reactive intermediate to the surface of the particle to form a surface modified particle. The particle may comprise at least one of a dye particle, an inorganic pigment particle, an additive, or a combination thereof. X may be a sulfonyl, phosphoryl, or 1,3,5-triazinyl group. Y may be a halogen leaving group. N may be a nucleophilic group. S may be an organic group. ZM may be an ionizable end group. Also, n is an integer between 1 and 3, b is an integer between 1 and 3, and a=n?b. When n is equal to or greater than b, and wherein if b is 2 or 3, each N—S-ZM can be the same or different.Type: ApplicationFiled: April 7, 2010Publication date: October 7, 2010Inventors: Puthalath K. Sujeeth, John P. Kane, Martial Blanc, Pascal Gruffel, Gilles Dolivo, Marco Ribezzo, Daniel A. Ouellette, Carol D. Landi, Rahul A. Ranade, Mark Ulrich
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Publication number: 20100061951Abstract: A modified pigment that may include a polymer. The pigment may be directly attached to a nitrogen atom. The nitrogen atom may be attached directly or indirectly to a group that may include —S-Z. S may be a substituted or unsubstituted alkyl group, substituted or unsubstituted aromatic group, or polymer chain having a molecular weight range from about 300 to about 20000. Z may be a hydrogen, carboxyl, sulfonyl, phenolic, phosphoryl, ammonium, trimethylammonium, or tributylammonium group. Also, a modified pigment that may include a polymer. The pigment may be attached to an organic group through a carbon atom that is part of a N—C?N bond. A cosmetic formulation that may include a pigment covalently bonded to an organic group.Type: ApplicationFiled: August 21, 2009Publication date: March 11, 2010Applicant: SENSIENT COLORS INC.Inventors: Puthalath K. Sujeeth, John P. Kane, Mark Ulrich, Daniel A. Ouellette, Vincent Shing, Mihaela Madaras, Carol D. Landi, Alberto Guerrero
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Publication number: 20090050014Abstract: A method of modifying a pigment that includes reacting a reactive compound having an X-[Y]n reactive group with a secondary compound N-S-ZM to form a substituted reactive intermediate [Y]a-X-(N-S-ZM)b. A pigment is reacted with the substituted reactive intermediate [Y]a-X-(N-S-ZM)b to attach the substituted reactive intermediate to the surface of the pigment to form a surface modified pigment. X may be a sulfonyl, phosphoryl, or 1,3,5-triazinyl group, Y may be a halogen leaving group, N may be a basic nucleophilic group, S may be an organic group, and ZM may be an ionizable end group. Also, n is an integer between 1 and 3, b is an integer between 1 and 3, and a=n?b. When n is equal to or greater than b, and if b is 2 or 3, each N-S-ZM can be the same or different.Type: ApplicationFiled: August 22, 2008Publication date: February 26, 2009Applicant: SENSIENT COLORS INC.Inventors: Puthalath K. Sujeeth, John P. Kane, Daniel A. Ouellette, Mark Ulrich, Vincent Shing, Michael Bogomolny
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Patent number: 5637733Abstract: A process for the manufacture of fluorescein compounds suitable for conversion to FDA certified dyes is described. The fluorescein compounds, and in particular fluorescein (also known as Solvent Yellow 94 or D&C Yellow No.7) and 3,4,5,6-tetrachlorofluorescein, are made by a process involving the condensation of a phthalic anhydride with several molar excess of a resorcinol, the resorcinol being employed not only as a reactant, but also as a solvent for the reaction. This process also can employ the unreacted resorcinol and any intermediates or by-products from the condensation reaction as a reactant and as a solvent in subsequent condensation reactions.Type: GrantFiled: September 27, 1995Date of Patent: June 10, 1997Assignee: Warner-Jenkinson Company, Inc.Inventor: Puthalath K. Sujeeth
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Patent number: 5468862Abstract: A process for the manufacture of a quinophthalone, in particular Solvent Yellow 33 (D & C Yellow 11) is described. The quinophthalone, in particular Solvent Yellow 33, is made by a process in which quinaldine is condensed with a molar excess of either phthalic acid or phthalic anhydride, the acid or anhydride being employed not only as a reactant, but also as a solvent for the reaction. This process can also employ phthalic acid (or recycled phthalic acid) and phthalic anhydride together, one as the solvent and the other as the reactant.Type: GrantFiled: April 25, 1994Date of Patent: November 21, 1995Assignee: Warner-Jenkinson CompanyInventor: Puthalath K. Sujeeth