Patents by Inventor Guisheng Pan

Guisheng Pan 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: 10758472
    Abstract: Oral care compositions comprising: (a) a peroxide complex comprising a peroxide component and an N-vinyl heterocyclic polymer (e.g., poly-N-vinyl polylactam, or poly-N-vinyl-polyimide); (b) a whitening agent (e.g., hydrogen peroxide); and (c) an orally acceptable carrier. In one embodiment, the carrier comprises a film forming material. Methods are also provided for making an oral care composition comprising: (a) mixing a whitening agent, silicone adhesive and carrier fluid to form a homogenous mixture; (b) adding a peroxide complex to said homogenous mixture, wherein said complex comprises hydrogen peroxide and an N-vinyl heterocyclic polymer; and (c) mixing under vacuum.
    Type: Grant
    Filed: February 20, 2018
    Date of Patent: September 1, 2020
    Assignee: Colgate-Palmolive Company
    Inventors: Lynette Zaidel, Guisheng Pan, Suman Chopra, Prakasarao Mandadi, Michael Prencipe
  • Patent number: 10596084
    Abstract: The present invention provides a tooth whitening oral care composition comprising: (i) a dye having a blue to blue-violet color with a hue angle in the CIELAB system ranging from 200 to 320 degrees; (ii) core shell silica particles, wherein each core shell silica particle comprises a silica core, and a surface of the silica core is etched with metal silicate; (iii) an orally acceptable carrier vehicle comprising a non-aqueous solvent; and wherein the composition comprises water in an amount of from 3 weight % to 30 weight %.
    Type: Grant
    Filed: July 30, 2018
    Date of Patent: March 24, 2020
    Assignee: Colgate-Palmolive Company
    Inventors: Venda Maloney, Suman Chopra, Hallena Strotman, Guisheng Pan
  • Publication number: 20190336419
    Abstract: This invention provides core shell silica particles, wherein each core shell silica particle comprises a silica core, and a surface of the silica core etched with group I metal silicate. These core shell silica particles have high surface charge density and anti-bacterial activity. Also provided are compositions comprising core shell silica particles, process of making the core shell silica particles and methods of reducing or inhibiting bacterial activity by administering the core shell silica particles or compositions thereof.
    Type: Application
    Filed: July 16, 2019
    Publication date: November 7, 2019
    Applicant: Colgate-Palmolive Company
    Inventors: Guisheng PAN, Suman CHOPRA
  • Patent number: 10369091
    Abstract: This invention provides core shell silica particles, wherein each core shell silica particle comprises a silica core, and a surface of the silica core etched with group I metal silicate. These core shell silica particles have high surface charge density and anti-bacterial activity. Also provided are compositions comprising core shell silica particles, process of making the core shell silica particles and methods of reducing or inhibiting bacterial activity by administering the core shell silica particles or compositions thereof.
    Type: Grant
    Filed: December 18, 2014
    Date of Patent: August 6, 2019
    Assignee: Colgate-Palmolive Company
    Inventors: Guisheng Pan, Suman Chopra
  • Publication number: 20190159981
    Abstract: Oral care compositions and methods for the same are provided herein. The oral care composition may include an orally acceptable vehicle, a peroxide whitening agent, and one or more gelling agents. The gelling agents may include a fatty acid. The gelling agents may be free or substantially free of fatty alcohols. The gelling agents may include at least one of palmitic acid, stearic acid, or mixtures thereof.
    Type: Application
    Filed: November 30, 2017
    Publication date: May 30, 2019
    Applicant: Colgate-Palmolive Company
    Inventors: Guisheng Pan, Lin Fei, Suman Chopra
  • Publication number: 20190159983
    Abstract: Anhydrous oral care compositions and methods for making and using the same are described herein. The anhydrous oral care compositions may include an orally acceptable vehicle, a peroxide whitening agent, and an abrasive system. The abrasive system may include at least one abrasive having a pellicle cleaning ratio (PCR) greater than or equal to 100.
    Type: Application
    Filed: November 30, 2017
    Publication date: May 30, 2019
    Applicant: Colgate-Palmolive Company
    Inventors: Guisheng Pan, Lin Fei, Suman Chopra
  • Publication number: 20190159984
    Abstract: Compounds and methods for preparing and using the compounds are disclosed herein. The method for preparing the compounds may include contacting a metal ion or salt thereof with an alkali metal polyphosphate salt in an aqueous medium. The method may also include adding a base to increase a pH of the aqueous medium.
    Type: Application
    Filed: November 29, 2018
    Publication date: May 30, 2019
    Applicant: Colgate-Palmolive Company
    Inventors: Guisheng PAN, Dennis ONTUMI, Lin FEI, Suman CHOPRA, Tatiana BRINZARI, Michael STRANICK, Long PAN
  • Publication number: 20190021963
    Abstract: The present invention provides a tooth whitening oral care composition comprising: (i) a dye having a blue to blue-violet color with a hue angle in the CIELAB system ranging from 200 to 320 degrees; (ii) core shell silica particles, wherein each core shell silica particle comprises a silica core, and a surface of the silica core is etched with metal silicate; (iii) an orally acceptable carrier vehicle comprising a non-aqueous solvent; and wherein the composition comprises water in an amount of from 3 weight % to 30 weight %.
    Type: Application
    Filed: July 30, 2018
    Publication date: January 24, 2019
    Applicant: COLGATE-PALMOLIVE COMPANY
    Inventors: Venda MALONEY, Suman CHOPRA, Hallena STROTMAN, Guisheng PAN
  • Publication number: 20180333346
    Abstract: Oral care compositions comprising: (a) a peroxide complex comprising a peroxide component and an N-vinyl heterocyclic polymer (e.g., poly-N-vinyl polylactam, or poly-N-vinyl-polyimide); (b) a whitening agent (e.g., hydrogen peroxide); and (c) an orally acceptable carrier. In one embodiment, the carrier comprises a film forming material. Methods are also provided for making an oral care composition comprising: (a) mixing a whitening agent, silicone adhesive and carrier fluid to form a homogenous mixture; (b) adding a peroxide complex to said homogenous mixture, wherein said complex comprises hydrogen peroxide and an N-vinyl heterocyclic polymer; and (c) mixing under vacuum.
    Type: Application
    Filed: February 20, 2018
    Publication date: November 22, 2018
    Applicant: COLGATE-PALMOLIVE COMPANY
    Inventors: Lynette A. Zaidel, Guisheng Pan, Suman K. Chopra, Prakasarao Mandadi, Michael Prencipe
  • Patent number: 10092482
    Abstract: Oral care compositions comprising: a) an oral care active; and b) an acrylic film forming polymer. In various embodiments, such polymers comprise monomeric units such as acrylic acid, methacrylic acid, acrylates, and combinations thereof. In one embodiment, the film forming polymer comprises a copolymer of a first monomeric unit selected from the group consisting of acrylic acid, methacrylic acid, and combinations thereof, with a second monomeric unit selected from the group consisting of acrylates, acrylamides, acetates, and combinations thereof. In various embodiments, the polymer is a terpolymer comprising a combination of the second monomeric units. Preferably, the composition additionally comprises a lower alcohol, such as ethanol. In various embodiments, the oral care active comprises a whitening material, such as a peroxide.
    Type: Grant
    Filed: June 3, 2008
    Date of Patent: October 9, 2018
    Assignee: Colgate-Palmolive Company
    Inventors: Prithwiraj Maitra, Lynette Zaidel, Suman K. Chopra, Guisheng Pan, Michael Prencipe, Sayed Ibrahim
  • Patent number: 10034821
    Abstract: The present invention provides a tooth whitening oral care composition comprising: (i) a dye having a blue to blue-violet color with a hue angle in the CIELAB system ranging from 200 to 320 degrees; (ii) core shell silica particles, wherein each core shell silica particle comprises a silica core, and a surface of the silica core is etched with metal silicate; (iii) an orally acceptable carrier vehicle comprising a non-aqueous solvent; and wherein the composition comprises water in an amount of from 3 weight % to 30 weight %.
    Type: Grant
    Filed: December 19, 2014
    Date of Patent: July 31, 2018
    Assignee: COLGATE-PALMOLIVE COMPANY
    Inventors: Venda Maloney, Suman Chopra, Hallena Strotman, Guisheng Pan
  • Patent number: 9974723
    Abstract: The present invention provides an oral care composition comprising, based on the total weight of the composition: (a) 15 to 24 weight % calcium carbonate; (b) 0.9 to 2.5 weight % cellulose ether thickening agent; (c) 7 to 10 weight % thickening silica; and (d) at least 40 weight % water.
    Type: Grant
    Filed: December 16, 2013
    Date of Patent: May 22, 2018
    Assignee: Colgate-Palmolive Company
    Inventors: Robert D'Ambrogio, Andrei Potanin, Guisheng Pan, Nora Lin
  • Patent number: 9949907
    Abstract: The present invention provides an oral care composition comprising, by total weight of the composition: (a) 15 to 35 weight % calcium carbonate; (b) 0.5 to 2 weight % cellulose ether thickening agent; (c) 1 to 6 weight % clay thickening agent; and (d) at least 35 weight % water; wherein, when the composition comprises less than 28 weight % calcium carbonate and less than 4 weight % clay thickening agent, the cellulose ether thickening agent is present in an amount of greater than 1 weight %.
    Type: Grant
    Filed: December 16, 2013
    Date of Patent: April 24, 2018
    Assignee: Colgate-Palmolive Company
    Inventors: Robert D'Ambrogio, Andrei Potanin, Guisheng Pan, Nora Lin
  • Patent number: 9895304
    Abstract: Oral care compositions comprising: (a) a peroxide complex comprising a peroxide component and an N-vinyl heterocyclic polymer (e.g., poly-N-vinyl polylactam, or poly-N-vinyl-polyimide); (b) a whitening agent (e.g., hydrogen peroxide); and (c) an orally acceptable carrier. In one embodiment, the carrier comprises a film forming material. Methods are also provided for making an oral care composition comprising: (a) mixing a whitening agent, silicone adhesive and carrier fluid to form a homogenous mixture; (b) adding a peroxide complex to said homogenous mixture, wherein said complex comprises hydrogen peroxide and an N-vinyl heterocyclic polymer; and (c) mixing under vacuum.
    Type: Grant
    Filed: November 4, 2016
    Date of Patent: February 20, 2018
    Assignee: Colgate-Palmolive Company
    Inventors: Lynette A. Zaidel, Guisheng Pan, Suman K. Chopra, Prakasarao Mandadi, Michael Prencipe
  • Publication number: 20170049680
    Abstract: Oral care compositions comprising: (a) a peroxide complex comprising a peroxide component and an N-vinyl heterocyclic polymer (e.g., poly-N-vinyl polylactam, or poly-N-vinyl-polyimide); (b) a whitening agent (e.g., hydrogen peroxide); and (c) an orally acceptable carrier. In one embodiment, the carrier comprises a film forming material. Methods are also provided for making an oral care composition comprising: (a) mixing a whitening agent, silicone adhesive and carrier fluid to form a homogenous mixture; (b) adding a peroxide complex to said homogenous mixture, wherein said complex comprises hydrogen peroxide and an N-vinyl heterocyclic polymer; and (c) mixing under vacuum.
    Type: Application
    Filed: November 4, 2016
    Publication date: February 23, 2017
    Inventors: Lynette A. Zaidel, Guisheng Pan, Suman K. Chopra, Prakasarao Mandadi, Michael Prencipe
  • Publication number: 20170014321
    Abstract: The present invention provides an oral care composition comprising, by total weight of the composition: (a) 15 to 35 weight % calcium carbonate; (b) 0.5 to 2 weight % cellulose ether thickening agent; (c) 1 to 6 weight % clay thickening agent; and (d) at least 35 weight % water; wherein, when the composition comprises less than 28 weight % calcium carbonate and less than 4 weight % clay thickening agent, the cellulose ether thickening agent is present in an amount of greater than 1 weight %.
    Type: Application
    Filed: December 16, 2013
    Publication date: January 19, 2017
    Applicant: Colgate-Palmolive Company
    Inventors: Robert D'Ambrogio, Andrei Potanin, Guisheng Pan, Nora Lin
  • Publication number: 20170014322
    Abstract: The present invention provides an oral care composition comprising, based on the total weight of the composition: (a) 15 to 24 weight % calcium carbonate; (b) 0.9 to 2.5 weight % cellulose ether thickening agent; (c) 7 to 10 weight % thickening silica; and (d) at least 40 weight % water.
    Type: Application
    Filed: December 16, 2013
    Publication date: January 19, 2017
    Applicant: Colgate-Palmolive Company
    Inventors: Robert D'Ambrogio, Andrei Potanin, Guisheng Pan, Nora Lin
  • Publication number: 20170014316
    Abstract: The present invention provides oral care compositions comprising, by total weight of the composition: (a) 15 to 35 weight % calcium carbonate; and (b) 5 to 25 weight % talc. In one aspect, the total concentration of talc and calcium carbonate in the composition is greater than 35 weight %. In another aspect where the total concentration of talc and calcium carbonate is 35 weight % or less, the composition also includes an additional structuring agent, which comprises at least one of: (i) a cellulose ether thickening agent; and (ii) an inorganic thickening agent selected from thickening silica, a clay thickening agent, and mixtures thereof.
    Type: Application
    Filed: December 16, 2013
    Publication date: January 19, 2017
    Applicant: Colgate-Palmolive Company
    Inventors: Robert D'Ambrogio, Andrei Potanin, Guisheng Pan, Nora Lin
  • Patent number: 9517194
    Abstract: Oral care compositions comprising: (a) a peroxide complex comprising a peroxide component and an N-vinyl heterocyclic polymer (e.g., poly-N-vinyl polylactam, or poly-N-vinyl-polyimide); (b) a whitening agent (e.g., hydrogen peroxide); and (c) an orally acceptable carrier. In one embodiment, the carrier comprises a film forming material. Methods are also provided for making an oral care composition comprising: (a) mixing a whitening agent, silicone adhesive and carrier fluid to form a homogenous mixture; (b) adding a peroxide complex to said homogenous mixture, wherein said complex comprises hydrogen peroxide and an N-vinyl heterocyclic polymer; and (c) mixing under vacuum.
    Type: Grant
    Filed: May 27, 2015
    Date of Patent: December 13, 2016
    Assignee: Colgate-Palmolive Company
    Inventors: Lynette A. Zaidel, Guisheng Pan, Suman K. Chopra, Prakasarao Mandadi, Michael Prencipe
  • Publication number: 20160338919
    Abstract: The present invention relates to core shell silica particles, wherein each core shell silica particle comprises a silica core, and a surface of the silica core is etched with metal silicate, the core shell silica particles prepared by: i) admixing an amount of silica particles in water with an amount of a base, wherein the base comprises a monovalent metal ion, to produce core shell silica particles, each core shell silica particle comprising a silica core, and a surface of the silica core etched with a silicate of the mono-valent metal ion; and ii) reacting the core shell silica particles formed in step i) with a metal salt comprising a second metal ion, to form core shell silica particles comprising silicate of the second metal ion on the surface of the silica core.
    Type: Application
    Filed: December 18, 2014
    Publication date: November 24, 2016
    Inventors: Guisheng PAN, Suman CHOPRA