Patents by Inventor Krishnan Chari

Krishnan Chari 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: 10265263
    Abstract: A stable, aqueous composition containing a crosslinked, nonionic, amphiphilic polymer capable of forming a yield stress fluid in the presence of a surfactant is disclosed. The yield stress fluid is capable of suspending insoluble materials in the form of particulates and/or droplets requiring suspension or stabilization.
    Type: Grant
    Filed: September 13, 2012
    Date of Patent: April 23, 2019
    Assignee: Lubrizol Advanced Materials, Inc.
    Inventors: Shui-Jen Raymond Hsu, Krishnan Chari, Wei-Yeih Yang, Prachur Bhargava, Murat Kadir
  • Publication number: 20180325784
    Abstract: The disclosed technology relates to near monodisperse and tunable emulsion droplets that can be uniformly coated onto hydrophilic and hydrophobic surfaces and provide superior protection from ultra-violet radiation as well as water resistance and improved actives delivery.
    Type: Application
    Filed: November 16, 2016
    Publication date: November 15, 2018
    Inventors: Krishnan Chari, Brian Figura, Anchuu Wu, Robert Jacobs
  • Patent number: 9867768
    Abstract: The invention relates to a method for improving the foaming and/or yield value properties associated with surfactant containing compositions comprising at least one anionic surfactant, the method comprises combining an effective amount of at least one nonionic, amphiphilic polymer with at least one anionic detersive surfactant in combination with an optional surfactant selected from amphoteric surfactants, nonionic surfactants and combinations of two or more thereof. The at least one nonionic amphiphilic polymer is prepared from a free radically polymerizable monomer composition comprising at least one hydrophilic monomer and at least one hydrophobic monomer, wherein said hydrophilic monomer is selected from a N-vinyl lactam and wherein said hydrophobic monomer is selected from a vinyl ester of a C1-C22 carboxylic acid or at least one monomer selected from a C8-C22 alkyl (meth)acrylate an associative monomer, a semi-hydrophobic monomer, or mixtures thereof, and an optional crosslinking monomer.
    Type: Grant
    Filed: March 6, 2014
    Date of Patent: January 16, 2018
    Assignee: Lubrizol Advanced Materials, Inc.
    Inventors: Brian D. Figura, Wei-Yeih Yang, Krishnan Chari
  • Publication number: 20170367963
    Abstract: A hair care composition comprising: i) at least one crosslinked nonionic amphiphilic suspending polymer; ii) at least one anionic surfactant; iii) at least one particulate antidandruff agent; and iv) water. The suspending polymer is a pH independent nonionic, amphiphilic emulsion polymer that is crosslinked with an amphiphilic crosslinking agent and effectively suspends water insoluble particulate antidandruff agents.
    Type: Application
    Filed: December 16, 2015
    Publication date: December 28, 2017
    Inventors: Murat Kadir, Neil Howard, Shui-Jen Raymond Hsu, Krishnan Chari
  • Publication number: 20170369614
    Abstract: A stable, aqueous composition containing a crosslinked, nonionic, amphiphilic polymer capable of forming a yield stress fluid in combination with a surfactant is disclosed. The yield stress fluid is capable of suspending insoluble materials in the presence of electrolytes, perfumes, fragrances and/or organic acid preservatives.
    Type: Application
    Filed: December 14, 2015
    Publication date: December 28, 2017
    Inventors: Dongcui Li, Shui-Jen Raymond Hsu, Sinan Li, Krishnan Chari
  • Patent number: 9714376
    Abstract: A stable, aqueous composition containing a crosslinked, nonionic, amphiphilic polymer capable of forming a yield stress fluid in the presence of a surfactant is disclosed. The crosslinked, nonionic amphiphilic polymer is prepared by dispersion polymerization in the presence of a stabilizing polymer. The yield stress fluid is capable of suspending insoluble materials in the form of particulates and/or droplets requiring suspension or stabilization.
    Type: Grant
    Filed: September 13, 2012
    Date of Patent: July 25, 2017
    Assignee: Lubrizol Advanced Materials, Inc.
    Inventors: Wei-Yeih Yang, Krishnan Chari, Shui-Jen Raymond Hsu, Prachur Bhargava
  • Publication number: 20160317424
    Abstract: A hair care composition comprising: i) at least one suspending polymer; ii) at least one anionic surfactant; iii) at least one particulate antidandruff agent; and iv) water. The suspending polymer is a pH independent nonionic, amphiphilic emulsion polymer that effectively suspends water insoluble particulate antidandruff agents.
    Type: Application
    Filed: December 18, 2014
    Publication date: November 3, 2016
    Inventors: Murat KADIR, Neil HOWARD, Shui-Jen Raymond HSU, Krishnan CHARI
  • Publication number: 20160304646
    Abstract: A stable, aqueous composition containing a crosslinked, nonionic, amphiphilic polymer capable of forming a yield stress fluid in the presence of a surfactant is disclosed. The yield stress fluid is capable of suspending insoluble materials in the form of particulates and/or droplets requiring suspension or stabilization.
    Type: Application
    Filed: December 17, 2014
    Publication date: October 20, 2016
    Applicant: Lubrizol Advanced Materials, Inc.
    Inventors: Shui-Jen Raymond Hsu, Krishnan Chari, Sinan Li
  • Patent number: 9433571
    Abstract: The present invention provides mild cleansing and cleaning compositions and methods for mitigating irritation induced by harsh detersive surfactants. The invention relates to a method of reducing skin irritation associated with a cleansing composition comprising at least one surfactant, the method comprising combining an effective amount of at least one nonionic amphiphilic polymer with at least one detersive surfactant selected from anionic surfactants, amphoteric surfactants, nonionic surfactants and combinations of two or more thereof.
    Type: Grant
    Filed: December 12, 2013
    Date of Patent: September 6, 2016
    Assignee: Lubrizol Advanced Materials, Inc.
    Inventors: Brian D. Figura, Krishnan Chari, Wei-Yeih Yang
  • Publication number: 20160022566
    Abstract: The invention relates to a method for improving the foaming and/or yield value properties associated with surfactant containing compositions comprising at least one anionic surfactant, the method comprises combining an effective amount of at least one nonionic, amphiphilic polymer with at least one anionic detersive surfactant in combination with an optional surfactant selected from amphoteric surfactants, nonionic surfactants and combinations of two or more thereof. The at least one nonionic amphiphilic polymer is prepared from a free radically polymerizable monomer composition comprising at least one hydrophilic monomer and at least one hydrophobic monomer, wherein said hydrophilic monomer is selected from a N-vinyl lactam and wherein said hydrophobic monomer is selected from a vinyl ester of a C1-C22 carboxylic acid or at least one monomer selected from a C5-C22 alkyl (meth)acrylate an associative monomer, a semi-hydrophobic monomer, or mixtures thereof, and an optional crosslinking monomer.
    Type: Application
    Filed: March 6, 2014
    Publication date: January 28, 2016
    Applicant: LUBRIZOL ADVANCED MATERIALS, INC.
    Inventors: Brian D. Figura, Wei-Yeih Yang, Krishnan Chari
  • Publication number: 20160015622
    Abstract: A conditioning and cleansing composition comprising at least one detersive surfactant, a silicone conditioning agent and a nonionic, amphiphilic polymer that mitigates the loss silicone deposition on keratinous substrates is disclosed. The nonionic, amphiphilic polymer is prepared by polymerizing a monomer composition comprising: a) from about 55 to about 95 wt. % of at least one vinyl amide monomer (based on the weight of the total monomers present); b) from about 5 to about 45 wt. % of at least one vinyl ester of an aliphatic carboxylic acid containing an acyl moiety having 2 to 22 carbon atoms (based on the weight of the total monomers present); c) from about 0 to about 1 wt. % of at least one polyunsaturated crosslinking monomer containing at least two polymerizable ethylenically unsaturated moieties (based on the total dry weight of the polymer); d) from about 0 to about 10 wt.
    Type: Application
    Filed: March 3, 2014
    Publication date: January 21, 2016
    Applicant: LUBRIZOL ADVANCED MATERIALS INC.
    Inventors: Denise W. Rafferty, Brian D. Figura, Wei-Yeih Yang, Krishnan Chari
  • Publication number: 20160017070
    Abstract: A process for preparing a vinyl acetate rich polymer for formulating surfactant containing compositions comprising at least one anionic surfactant and having yield stress properties without a significant increase in viscosity, low turbidity, and the ability to suspend insoluble materials in the form of particulates and/or droplets that require suspension or stabilization is disclosed.
    Type: Application
    Filed: March 5, 2014
    Publication date: January 21, 2016
    Applicant: LUBRIZOL ADVANCED MATERIALS, INC.,
    Inventors: Murat Kadir, Shui-Jen Raymond Hsu, Krishnan Chari
  • Publication number: 20150342860
    Abstract: The present invention provides mild cleansing and cleaning compositions and methods for mitigating irritation induced by harsh detersive surfactants. The invention relates to a method of reducing skin irritation associated with a cleansing composition comprising at least one surfactant, the method comprising combining an effective amount of at least one nonionic amphiphilic polymer with at least one detersive surfactant selected from anionic surfactants, amphoteric surfactants, nonionic surfactants and combinations of two or more thereof.
    Type: Application
    Filed: December 12, 2013
    Publication date: December 3, 2015
    Applicant: LUBRIZOL ADVANCED MATERIALS, INC.
    Inventors: Brian D. Figura, Krishnan Chari, Wei-Yeih Yang
  • Publication number: 20150335565
    Abstract: The present invention provides mild cleansing and cleaning compositions and methods for mitigating irritation induced by harsh detersive surfactants contained therein. The invention relates to a method of reducing skin irritation associated with a cleansing composition comprising at least one surfactant, the method comprising combining an effective amount of at least one nonionic amphiphilic polymer with at least one detersive surfactant selected from anionic surfactants, amphoteric surfactants, nonionic surfactants and combinations of two or more thereof. The at least one nonionic amphiphilic irritation mitigating polymer is prepared from a free radically polymerizable monomer composition comprising at least one hydrophilic monomer and at least one hydrophobic monomer.
    Type: Application
    Filed: December 12, 2013
    Publication date: November 26, 2015
    Applicant: LUBRIZOL ADVANCED MATERIALS, INC.
    Inventors: Brian D. Figura, Krishnan Chari, Shui-Jen Raymond Hsu
  • Patent number: 9096755
    Abstract: A stable, aqueous composition containing a crosslinked, nonionic, amphiphilic polymer capable of forming a yield stress fluid in the presence of a surfactant is disclosed. The yield stress fluid is capable of suspending insoluble materials in the form of particulates and/or droplets requiring suspension or stabilization.
    Type: Grant
    Filed: September 13, 2012
    Date of Patent: August 4, 2015
    Assignee: Lubrizol Advanced Materials, Inc.
    Inventors: Krishnan Chari, Shui-Jen Raymond Hsu, Wei-Yeih Yang, Prachur Bhargava, Murat Kadir
  • Publication number: 20140364511
    Abstract: A stable, aqueous composition containing a crosslinked, nonionic, amphiphilic polymer capable of forming a yield stress fluid in the presence of a surfactant is disclosed. The yield stress fluid is capable of suspending insoluble materials in the form of particulates and/or droplets requiring suspension or stabilization.
    Type: Application
    Filed: September 13, 2012
    Publication date: December 11, 2014
    Applicant: LUBRIZOL ADVANCED MATERIALS, INC.
    Inventors: Krishnan Chari, Shui-Jen Raymond Hsu, Wei-Yeih Yang, Prachur Bhargava, Murat Kadir
  • Publication number: 20140348887
    Abstract: A stable, aqueous composition containing a crosslinked, nonionic, amphiphilic polymer capable of forming a yield stress fluid in the presence of a surfactant is disclosed. The yield stress fluid is capable of suspending insoluble materials in the form of particulates and/or droplets requiring suspension or stabilization.
    Type: Application
    Filed: September 13, 2012
    Publication date: November 27, 2014
    Applicant: Lubrizol Advanced Materials, Inc.
    Inventors: Shui-Jen Raymond Hsu, Krishnan Chari, Wei-Yeih Yang, Prachur Bhargava, Murat Kadir
  • Publication number: 20140341957
    Abstract: A stable, aqueous composition containing a crosslinked, nonionic, amphiphilic polymer capable of forming a yield stress fluid in the presence of a surfactant is disclosed. The crosslinked, nonionic amphiphilic polymer is prepared by dispersion polymerization in the presence of a stabilizing polymer. The yield stress fluid is capable of suspending insoluble materials in the form of particulates and/or droplets requiring suspension or stabilization.
    Type: Application
    Filed: September 13, 2012
    Publication date: November 20, 2014
    Applicant: LUBRIZOL ADVANCED MATERIALS, INC.
    Inventors: Wei-Yeih Yang, Krishnan Chari, Shui-Jen Raymond Hsu, Prachur Bhargava
  • Patent number: 8025938
    Abstract: The present invention relates to photo-tunable dopant compositions comprising a photo-reactive chiral compound capable of undergoing a photochemical reaction resulting in the loss of chirality, and a triplet sensitizer. The present invention also relates to a display comprising a substrate, a liquid crystalline layer thereon, wherein the liquid crystalline layer comprises a nematic host, at least one chiral dopant, a photo-reacted compound, and a triplet sensitizer, and at least one transparent conductive layer. The present invention also relates to a method of tuning a cholesteric liquid crystal material comprising providing at least one mesogenic compound, at least one triplet sensitizer, and at least one photo-reactive chiral compound; combining the at least one mesogenic compound, at least one triplet sensitizer, and at least one photo-reactive chiral compound to form a mixture; and irradiating the mixture for a period of time.
    Type: Grant
    Filed: November 20, 2009
    Date of Patent: September 27, 2011
    Assignee: Industrial Technology Research Institute
    Inventors: Deepak Shukla, Krishnan Chari
  • Patent number: 7931515
    Abstract: A method of manufacturing a micro-lens array and light-emitting device, comprising forming a first structured polymer film with close packed surface cavities having a mean diameter of less than 20 micrometers and a relatively lower surface energy surface, forming a transparent second structured film with an array of microlenses formed thereon corresponding to the cavities of the first structured film, wherein the second structured film comprises a relatively high surface energy material and has a refractive index greater than 1.45, and wherein the microlenses are randomly distributed, separating the second structured film with the micro-lens array from the first structured polymer film, and attaching the second structured film to a transparent substrate or cover of a light-emitting device through which light is emitted.
    Type: Grant
    Filed: May 21, 2010
    Date of Patent: April 26, 2011
    Assignee: Global OLED Technology LLC
    Inventors: Krishnan Chari, Charles W. Lander, Liang-Sheng Liao, Paul D. Yacobucci