Patents by Inventor Purvita Shah

Purvita Shah 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).

  • Publication number: 20200224128
    Abstract: Disclosed herein is a laundry or cleaning composition comprising (i) from about 0.001 wt. % to about 50 wt. % of at least one cationic polymer selected from the group consisting of poly acrylamidopropyl trimethyl ammonium chloride Poly(APTAC), polydiallyl dimethyl ammonium chloride poly(DADMAC), copolymers of polyAPTAC, copolymers of polyDADMAC, terpolymers of polyAPTAC, and/or terpolymers of polyDADMAC; (ii) from about 0.01 wt.% to about 50 wt.% of at least one non-ionic surfactant; (iii) optionally, from about 0.001 wt.% to about 5 wt.% of at least one enzyme; and (iv) optionally, from about 0.01 wt.% to about 25 wt.% of at least one laundry or cleaning additive, wherein said composition is capable of exhibiting color wash fastness or color maintenance.
    Type: Application
    Filed: September 9, 2016
    Publication date: July 16, 2020
    Applicant: ISP INVESTMENTS LLC
    Inventors: Terry CRUTCHER, JR., Raymond RIGOLETTO, JR., Purvita SHAH, Gijsbert KROON
  • Patent number: 8993507
    Abstract: Functional additives for cleansing compositions exhibiting enhanced anti soil-re-deposition and/or dye transfer inhibitory properties comprising polymers in the form of homopolymers, copolymers or terpolymers synthesized from at least one hydrophobic monomer. Examples of hydrophobic monomers include N-vinyl caprolactam, vinyl acetate, vinyl esters, acrylated glycols, methacrylamide, C1 to C12 alkyl- and C1 to C12 dialkylacrylamide, C1 to C12 alkyl- and C1 to C12 dialkylmethacrylamide, C1 to C12 alkyl aery late, C1 to C12 alkyl methacrylate, 4-butyl phenyl maleimide, octyl acrylamide.
    Type: Grant
    Filed: March 11, 2011
    Date of Patent: March 31, 2015
    Assignee: ISP Investments Inc.
    Inventors: David K. Hood, Karyn B. Visscher, Tony Gough, Surya Kamin, Purvita Shah, Jayanti V. Patel, Sarah Orton, Osama M. Musa
  • Publication number: 20130198968
    Abstract: Functional additives for cleansing compositions exhibiting enhanced anti soil-re-deposition and/or dye transfer inhibitory properties comprising polymers in the form of homopolymers, copolymers or terpolymers synthesized from at least one hydrophobic monomer. Examples of hydrophobic monomers include N-vinyl caprolactam, vinyl acetate, vinyl esters, acrylated glycols, methacrylamide, C1 to C12 alkyl- and C1 to C12 dialkylacrylamide, C1 to C12 alkyl- and C1 to C12 dialkylmethacrylamide, C1 to C12 alkyl aery late, C1 to C12 alkyl methacrylate, 4-butyl phenyl maleimide, octyl acrylamide.
    Type: Application
    Filed: March 11, 2011
    Publication date: August 8, 2013
    Inventors: David K. Hood, Karyn B. Visscher, Surya Kamin, Purvita Shah, Osama M. Musa, Tony Gough, Jayanti V. Patel, Sarah Orton
  • Patent number: 7964551
    Abstract: A cleaning tablet comprising a hydrogen-bonded complex of poly(N-vinyl pyrrolidone) containing, by weight, about 15-20 wt. % H2O2, and ingredients capable of producing an effervescent effect in aqueous solution by release of carbon dioxide therefrom which comprises an alkali carbonate and/or bicarbonate base and an organic acid.
    Type: Grant
    Filed: April 2, 2007
    Date of Patent: June 21, 2011
    Assignee: ISP Investments Inc.
    Inventors: Purvita Shah, David K. Hood, Michael J. Jurek
  • Publication number: 20070238635
    Abstract: A cleaning tablet comprising a hydrogen-bonded complex of poly(N-vinyl pyrrolidone) containing, by weight, about 15-20 wt. % H2O2, and ingredients capable of producing an effervescent effect in aqueous solution by release of carbon dioxide therefrom which comprises an alkali carbonate and/or bicarbonate base and an organic acid.
    Type: Application
    Filed: April 2, 2007
    Publication date: October 11, 2007
    Applicant: ISP Investments Inc.
    Inventors: Purvita Shah, David Hood, Michael Jurek
  • Patent number: 7273838
    Abstract: A laundry detergent formulation includes a dirt suspending agent which is a blend of an anionic material, such as an anionic polymer, and a quaternary ammonium salt. This suspending agent prevents redeposition of dirt which is removed from clothing by a laundry detergent from redepositing onto cleaned clothes during the wash cycle, while allowing it to be removed completely during the rinse cycle.
    Type: Grant
    Filed: October 12, 2004
    Date of Patent: September 25, 2007
    Assignee: ISP Investments Inc
    Inventors: Purvita Shah, Michael J. Jurek
  • Publication number: 20060128595
    Abstract: A soil settling composition which can rapidly precipitate soil in dirty water includes an aqueous solution of a settling agent which is a polymeric composition of a water soluble polymer, or copolymer thereof, optionally having in situ-formed substantially water-insoluble, crosslinked resinous particles of the polymer or copolymer substantially uniformly dispersed in the composition as a second phase.
    Type: Application
    Filed: February 3, 2006
    Publication date: June 15, 2006
    Inventors: Purvita Shah, Michael Jurek
  • Publication number: 20060079436
    Abstract: A laundry detergent formulation includes a dirt suspending agent which is a blend of an anionic material, such as an anionic polymer, and a quaternary ammonium salt. This suspending agent prevents redeposition of dirt which is removed from clothing by a laundry detergent from redepositing onto cleaned clothes during the wash cycle, while allowing it to be removed completely during the rinse cycle.
    Type: Application
    Filed: October 12, 2004
    Publication date: April 13, 2006
    Inventors: Purvita Shah, Michael Jurek
  • Publication number: 20050101512
    Abstract: A soil settling composition which can rapidly precipitate soil in dirty water includes an aqueous solution of a settling agent which is a polymeric composition of a water soluble polymer, or copolymer thereof, optionally having in situ-formed substantially water-insoluble, crosslinked resinous particles of the polymer or copolymer substantially uniformly dispersed in the composition as a second phase.
    Type: Application
    Filed: July 14, 2004
    Publication date: May 12, 2005
    Inventors: Purvita Shah, Michael Jurek
  • Patent number: 6875732
    Abstract: A micro-emulsified fragrance composition provides an effective fragrance delivery system when present in a laundry composition, e.g. a laundry fabric softener formulation, or when delivered from a substrate. This composition can deposit a substantial amount of fragrance material onto the surface intended for deposition during the wash, rinse, dry, or post-dry cycles.
    Type: Grant
    Filed: September 23, 2003
    Date of Patent: April 5, 2005
    Assignee: ISP Investments Inc.
    Inventors: Michael J. Jurek, Purvita Shah, Kolazi S. Narayanan
  • Publication number: 20050032655
    Abstract: A micro-emulsified fragrance composition provides an effective fragrance delivery system when present in a laundry composition, e.g. a laundry fabric softener formulation, or when delivered from a substrate. This composition can deposit a substantial amount of fragrance material onto the surface intended for deposition during the wash, rinse, dry, or post-dry cycles.
    Type: Application
    Filed: September 23, 2003
    Publication date: February 10, 2005
    Inventors: Michael Jurek, Purvita Shah, Kolazi Narayanan
  • Patent number: 6821941
    Abstract: A tablet of compacted particulate cleaning composition has about 0.5-10% by wt. of a composite disintegrant blend of, by weight, (a) about 20-80% of a water soluble salt, (b) about 80-20% of crosslinked polyvinylpyrrolidone (PVPP), the tablet having a disintegration rate of at least 40 g/min.
    Type: Grant
    Filed: November 13, 2002
    Date of Patent: November 23, 2004
    Assignee: ISP Investments Inc.
    Inventors: Bala Srinivas, Purvita Shah
  • Publication number: 20040082493
    Abstract: A tablet of compacted particulate cleaning composition, wherein the tablet or a discrete region thereof contains detergency builder, characterized by containing about 0.5-10% by wt. of a composite disintegrant blend comprising, by weight, (a) about 20-80% of a water soluble salt, (b) about 80-20% of crosslinked polyvinylpyrrolidone (PVPP), said tablet having a disintegration rate of at least 40 g/min.
    Type: Application
    Filed: November 13, 2002
    Publication date: April 29, 2004
    Applicant: ISP INVESTMENT INC.
    Inventors: Bala Srinivas, Purvita Shah