Patents by Inventor Drupesh Patel
Drupesh Patel 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: 10876015Abstract: The present invention provides coating compositions for forming a toner coating and inkjet receptive coatings on a substrate containing a film forming polymer comprising (a) a monomer (monomer A) comprising at least one functionalized or unfunctionalized acryloyl moiety and at least one lactam moiety. (b) a N-vinyl amide monomer (monomer Bx1), (c) an optional cross-linker (monomer Bx2) and (d) a solvent. The coating compositions may further comprise an additional hydrophobic monomer moiety. The present invention further provides toner substrates and inkjet receptive substrates coated with the coating compositions.Type: GrantFiled: November 14, 2016Date of Patent: December 29, 2020Assignee: ISP INVESTMENTS LLCInventors: Osama M. Musa, Drupesh Patel, Michael A. Tallon, David K. Hood
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Patent number: 10632059Abstract: The invention provides non-aqueous compositions comprising film forming polymers comprising repeating units derived from: (a) at least one monomer comprising at least one functionalized or unfunctionalized acryloyl moiety and at least one lactam moiety; (b) at least one monomer selected from the group consisting of functionalized and unfunctionalized C1-C7 alkyl (alk)acrylates, C1-C7 alkyl (alk)acrylamides, and combinations thereof; and (c) at least one monomer selected from the group consisting of functionalized and unfunctionalized C8-C60 alkyl (alk)acrylates, C8-C60 (alk)alkyl acrylamides, and combinations thereof. The invention further provides applications of these compositions in various industrial arts, particularly in personal care. The invention furthermore provides water-resistant non-aqueous personal care compositions. Variables a, b and c are described herein.Type: GrantFiled: November 17, 2016Date of Patent: April 28, 2020Assignee: ISP INVESTMENTS LLCInventors: Michael A. Tallon, Donald I. Prettypaul, Drupesh Patel, Mousumi Ghosh, Osama M. Musa
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Publication number: 20180369120Abstract: Disclosed herein is an oil soluble composition comprising a copolymer having repeating units of: (i) about 0.1-99.9 wt. % of at least one monomer selected from at least one hydrophobically modified (alk) acrylate moiety; and (ii) about 0.1-99.9 wt. % of at least one monomer derived from at least one functionalized or unfunctionalized acryloyl moiety and at least one lactam moiety. Also, disclosed herein is a mineral oil soluble personal care and fragrance composition comprising such copolymer, a fragrance delivery system and method of delivering fragrance.Type: ApplicationFiled: November 21, 2016Publication date: December 27, 2018Applicant: ISP INVESTMENTS LLCInventors: Manuel GAMEZ-GARCIA, Solomon T. WOSSENE, Michael A. TALLON, Drupesh PATEL, Ryan Vincent BLAZEWICZ
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Publication number: 20180333345Abstract: The invention provides non-aqueous compositions comprising film forming polymers comprising repeating units derived from: (a) at least one monomer comprising at least one functionalized or unfunctionalized acryloyl moiety and at least one lactam moiety; (b) at least one monomer selected from the group consisting of functionalized and unfunctionalized C1-C7 alkyl (alk)acrylates, C1-C7 alkyl (alk)acrylamides, and combinations thereof; and (c) at least one monomer selected from the group consisting of functionalized and unfunctionalized C8-C60 alkyl (alk)acrylates, C8-C60 (alk)alkyl acrylamides, and combinations thereof. The invention further provides applications of these compositions in various industrial arts, particularly in personal care. The invention furthermore provides water-resistant non-aqueous personal care compositions. Variables a, b and c are described herein.Type: ApplicationFiled: November 17, 2016Publication date: November 22, 2018Applicant: ISP INVESTMENTS LLCInventors: Michael A. TALLON, Donald I. PRETTYPAUL, Drupesh PATEL, Mousumi GHOSH, Osama M. MUSA
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Publication number: 20180327628Abstract: The present invention provides coating compositions for forming a toner coating and inkjet receptive coatings on a substrate containing a film forming polymer comprising (a) a monomer (monomer A) comprising at least one functionalized or unfunctionalized acryloyl moiety and at least one lactam moiety. (b) a N-vinyl amide monomer (monomer Bx1), (c) an optional cross-linker (monomer Bx2) and (d) a solvent. The coating compositions may further comprise an additional hydrophobic monomer moiety. The present invention further provides toner substrates and inkjet receptive substrates coated with the coating compositions.Type: ApplicationFiled: November 14, 2016Publication date: November 15, 2018Applicant: ISP INVESTMENTS LLCInventors: Osama M. MUSA, Drupesh PATEL, Michael A. TALLON, David K. HOOD
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Patent number: 7402641Abstract: Terpolymer compositions of vinyl caprolactam (VCL), dimethylaminopropyl methacrylamide (DMAPMA) and hydroxyethyl methacrylate (HEMA) are described to coat substrates for use in computer printers, and provide advantageous print quality thereon.Type: GrantFiled: June 2, 2005Date of Patent: July 22, 2008Assignee: ISP Investments Inc.Inventors: Stephen L. Kopolow, David K. Hood, Drupesh Patel
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Publication number: 20050222353Abstract: Terpolymer compositions of vinyl caprolactam (VCL), dimethylaminopropyl methacrylamide (DMAPMA) and hydroxyethyl methacrylate (HEMA) are described to coat substrates for use in computer printers, and provide advantageous print quality thereon.Type: ApplicationFiled: June 2, 2005Publication date: October 6, 2005Inventors: Stephen Kopolow, David Hood, Drupesh Patel
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Patent number: 6939934Abstract: Terpolymer compositions of vinyl caprolactam (VCL), dimethylaminopropyl methacrylamide (DMAPMA) and hydroxyethyl methacrylate (HEMA) are described to coat substrates for use in computer printers, and provide advantageous print quality thereon.Type: GrantFiled: August 26, 2004Date of Patent: September 6, 2005Assignee: ISP Investments Inc.Inventors: Stephen L. Kopolow, David K. Hood, Drupesh Patel
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Patent number: 6939927Abstract: Vinyl pyrrolidone/vinyl acetate copolymers having a very low residual vinyl pyrrolidone monomer level, i.e. <100 ppm, preferably only 50 ppm, are made within an advantageously short production cycle, by post-treating an aqueous solution of the copolymer at an elevated temperature of about 120–150° C., preferably about 130° C., under pressure, in the presence of a high temperature initiator, for a period of about 1–4 hours, preferably 2 hours.Type: GrantFiled: September 21, 2004Date of Patent: September 6, 2005Assignee: ISP Investments Inc.Inventors: Drupesh Patel, Paul Taylor, John Mc Kittrick
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Publication number: 20050027068Abstract: Terpolymer compositions of vinyl caprolactam (VCL), dimethylaminopropyl methacrylamide (DMAPMA) and hydroxyethyl methacrylate (HEMA) are described to coat substrates for use in computer printers, and provide advantageous print quality thereon.Type: ApplicationFiled: August 26, 2004Publication date: February 3, 2005Inventors: Stephen Kopolow, David Hood, Drupesh Patel
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Patent number: 6806310Abstract: Copolymers of dimethylaminopropyl methacrylamide and hydroxyethyl methacrylate having residual monomer levels of <2000 ppm and <500 ppm, respectively, are made by copolymerizing the monomers in a predetermined weight ratio in an aqueous-alcoholic solvent of defined composition. Substrates coated with these copolymers are capable of absorbing the solvents, e.g. water or organic solvents, of digital printing inks rapidly with dry times of <1 min.Type: GrantFiled: May 22, 2002Date of Patent: October 19, 2004Assignee: ISP Investments Inc.Inventors: Stephen L. Kopolow, Drupesh Patel, Michael Tallon
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Patent number: 6713538Abstract: A post-treatment process for making a water-resistant polymeric coating composition or a strongly-swellable polymeric gel includes providing a stable, aqueous two-phase polymeric composition by the steps of forming a reaction mixture in a reaction vessel which includes a water-soluble vinyl monomer, optionally with one or more water-soluble comonomers, first amount of a crosslinking agent, and water, heating the mixture, then periodically adding a predetermined amount of an initiator, and polymerizing at about 30-130° C., optionally removing the resultant two-phase composition from the reaction vessel, adding a predetermined amount of an additional crosslinker or proteinaceous compound thereto, optionally coating the mixture onto a support, and optionally heating to further polymerize the mixture.Type: GrantFiled: June 15, 2001Date of Patent: March 30, 2004Assignee: ISP Investments Inc.Inventors: David K. Hood, Stephen L. Kopolow, Michael Tallon, Yoon Tae Kwak, Laurence Senak, Drupesh Patel, John Mc Kittrick
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Publication number: 20030217825Abstract: Copolymers of dimethylaminopropyl methacrylamide and hydroxyethyl methacrylate having residual monomer levels of <2000 ppm and <500 ppm, respectively, are made by copolymerizing the monomers in a predetermined weight ratio in an aqueous-alcoholic solvent of defined composition. Substrates coated with these copolymers are capable of absorbing the solvents, e.g. water or organic solvents, of digital printing inks rapidly with dry times of <1 min.Type: ApplicationFiled: May 22, 2002Publication date: November 27, 2003Applicant: ISP INVESTMENTS INC.Inventors: Stephen L. Kopolow, Drupesh Patel, Michael Tallon
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Patent number: 6641259Abstract: A method of color inkjet printing on a substrate coated with a substantially colorless, 90-10 to 30-70, wt/wt, copolymer of vinyl pyrrolidone and vinyl imidazole, by inkjet printing dye images on the thus-coated substrate, characterized in that the dye images obtained exhibit excellent light fastness.Type: GrantFiled: June 5, 2002Date of Patent: November 4, 2003Assignee: ISP Investments Inc.Inventors: Stephen L. Kopolow, Drupesh Patel, Yoon Tae Kwak, Michael Tallon, David K. Hood, Laurence Senak, John M C Kittrick
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Patent number: 6548597Abstract: A stable, aqueous polymeric composition which forms a clear to translucent film upon application to a substrate includes, by weight, 5-75% of (a) a water-soluble polymer having (b) in situ-formed, substantially water-insoluble resinous particles of said polymer substantially uniformly dispersed therein, and (c) 25-95% of water.Type: GrantFiled: February 15, 2001Date of Patent: April 15, 2003Assignee: ISP Investments Inc.Inventors: David K. Hood, Stephen L. Kopolow, Michael Tallon, Yoon Tae Kwak, Laurence Senak, Drupesh Patel, John Mc Kittrick
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Patent number: 6541565Abstract: A system for delivering an active material includes (1) a stable, aqueous polymeric composition of (a) a water-soluble polymer having (b) in situ-formed, substantially water-insoluble resinous particles of said polymer substantially uniformly dispersed therein, and (c) water; and (2) an active material dispersed in said composition.Type: GrantFiled: June 15, 2001Date of Patent: April 1, 2003Assignee: ISP Investments Inc.Inventors: David K. Hood, Stephen L. Kopolow, Michael Tallon, Yoon Tae Kwak, Laurence Senak, Drupesh Patel, John Mc Kittrick
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Patent number: 6458888Abstract: A rheology modifier for use in aqueous or alcoholic compositions includes an aqueous two-phase polymeric composition of by weight, 5-75% of (a) a water-soluble polymer having (b) in situ-formed, substantially water-insoluble resinous particles of said polymer substantially uniformly dispersed therein, and (c) 25-95% of water.Type: GrantFiled: June 15, 2001Date of Patent: October 1, 2002Assignee: ISP Investments Inc.Inventors: David K. Hood, Stephen L. Kopolow, Michael Tallon, Yoon Tae Kwak, Laurence Senak, Drupesh Patel, John Mc Kittrick
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Publication number: 20020061960Abstract: A post-treatment product and process for making a water-resistant polymeric coating or a strongly-swellable polymeric gel includes providing a stable, aqueous two-phase polymeric composition by the steps of forming a reaction mixture in a reaction vessel which includes a water-soluble vinyl monomer, optionally with one or more water-soluble comonomers, a first amount of a crosslinking agent, and water, heating the mixture, then periodically adding a predetermined amount of an initiator, and polymerizing at about 30-130° C., optionally removing the resultant two-phase composition from the reaction vessel, adding a predetermined amount of additional crosslinker or proteinaceous compound thereto, optionally coating the mixture onto a support, and optionally heating to further polymerize or process the mixture.Type: ApplicationFiled: June 15, 2001Publication date: May 23, 2002Applicant: ISP INVESTMENTS INC.Inventors: David K. Hood, Stephen L. Kopolow, Michael Tallon, Yoon Tae Kwak, Laurence Senak, Drupesh Patel, John Mc Kittrick
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Publication number: 20020058750Abstract: A stable, aqueous polymeric composition which forms a clear to translucent film upon application to a substrate includes, by weight, 5-75% of (a) a water-soluble polymer having (b) in situ-formed, substantially water-insoluble resinous particles of said polymer substantially uniformly dispersed therein, and (c) 25-95% of water.Type: ApplicationFiled: February 15, 2001Publication date: May 16, 2002Applicant: ISP INVESTMENTS INC.Inventors: David K. Hood, Stephen L. Kopolow, Michael Tallon, Yoon Tae Kwak, Laurence Senak, Drupesh Patel, John Mc Kittrick
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Publication number: 20020058015Abstract: A system for delivering an active material includes (1) a stable, aqueous polymeric composition of, by weight, (a) a water-soluble polymer having (b) in situ-formed, substantially water-insoluble resinous particles of said polymer substantially water-insoluble resinous particles of said polymer substantially uniformly dispersed therein, and (c) 25-95% of water; and (2) an active material dispersed in said composition.Type: ApplicationFiled: June 15, 2001Publication date: May 16, 2002Applicant: ISP INVESTMENTS INC.Inventors: David K. Hood, Stephen L. Kopolow, Michael Tallon, Yoon Tae Kwak, Laurence Senak, Drupesh Patel, John Mc Kittrick