Patents by Inventor Zhi-Jian Yu

Zhi-Jian Yu 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: 9480645
    Abstract: Disclosed herein are non-irritating ophthalmic emulsion compositions useful for treating ocular disorders including dry eye. More specifically, the ophthalmic compositions disclosed herein combine a high HLB surfactant and a low HLB surfactant together with an omega-3 fatty acid-containing oil having non-polar aliphatic side chains to form a therapeutic non-irritating eye drop.
    Type: Grant
    Filed: June 2, 2009
    Date of Patent: November 1, 2016
    Assignee: Abbott Medical Optics Inc.
    Inventor: Zhi-Jian Yu
  • Patent number: 8828412
    Abstract: Disclosed herein are stable oil-in-water emulsion ophthalmic topical liquid compositions having an average particle size less than 1 ?m including at least one plant-derived oil other than castor oil wherein the oil comprises only aliphatic side chains free of polar pendent groups. The oil-in-water emulsion ophthalmic topical liquid compositions also include a hydrophilic surfactant having an HLB value between approximately 10 and 14, a vegetable oil-derived hydrophobic non-co-block surfactant having unsaturated side chains that contain less than four oxygen atoms having an HLB value between approximately 4 and 6 and is a liquid at room temperature. The oil-in-water emulsion ophthalmic topical liquid compositions disclosed herein can further include an amount of cyclosporine A or polyphenol in an amount effective to relieve dry eye symptoms.
    Type: Grant
    Filed: June 2, 2010
    Date of Patent: September 9, 2014
    Assignee: Abbott Medical Optics Inc.
    Inventors: Zhi-Jian Yu, Stanley W. Huth, Stephen J. Demichele
  • Patent number: 8309679
    Abstract: The present embodiments relate to a novel method of making quaternary ammonium polymers comprising the steps of: a) mixing 1,4-bis-dimethylamino-2-butene, triethanolamine, water and an acid; and b) introducing a 1,4-dihalo-2-butene to the mixture so as to initiate a reaction resulting in the quaternary ammonium polymer.
    Type: Grant
    Filed: December 21, 2011
    Date of Patent: November 13, 2012
    Assignee: Abbott Medical Optics Inc.
    Inventor: Zhi-Jian Yu
  • Patent number: 8163684
    Abstract: Antimicrobial or preservative compositions with high user comfort and/or low ocular irritation. The compositions comprise a polyquaternary ammonium compound and an amidoamine having an alcohol group and exhibit synergistic antimicrobial activity. The compositions may be used as stand-alone antimicrobials/preservatives or may be incorporated into other ocular compositions such as those for ocular lens care or the treatment of ocular conditions.
    Type: Grant
    Filed: March 26, 2008
    Date of Patent: April 24, 2012
    Assignee: Abbott Medical Optics Inc.
    Inventor: Zhi-Jian Yu
  • Publication number: 20120093760
    Abstract: The present embodiments relate to a novel method of making quaternary ammonium polymers comprising the steps of: a) mixing 1,4-bis-dimethylamino-2-butene, triethanolamine, water and an acid; and b) introducing a 1,4-dihalo-2-butene to the mixture so as to initiate a reaction resulting in the quaternary ammonium polymer.
    Type: Application
    Filed: December 21, 2011
    Publication date: April 19, 2012
    Applicant: Abbott Medical Optics Inc.
    Inventor: Zhi Jian Yu
  • Publication number: 20120093894
    Abstract: Disclosed herein are stable oil-in-water emulsion ophthalmic topical liquid compositions having an average particle size less than 1 ?m including at least one plant-derived oil other than castor oil wherein the oil comprises only aliphatic side chains free of polar pendent groups. The oil-in-water emulsion ophthalmic topical liquid compositions also include a hydrophilic surfactant having an HLB value between approximately 10 and 14, a vegetable oil-derived hydrophobic non-co-block surfactant having unsaturated side chains that contain less than four oxygen atoms having an HLB value between approximately 4 and 6 and is a liquid at room temperature. The oil-in-water emulsion ophthalmic topical liquid compositions disclosed herein can further include an amount of cyclosporine A or polyphenol in an amount effective to relieve dry eye symptoms.
    Type: Application
    Filed: June 2, 2010
    Publication date: April 19, 2012
    Applicant: Abbott Medical Optics Inc.
    Inventors: Zhi-Jian Yu, Stanley W. Huth, Stephen J. Demichele
  • Patent number: 8106151
    Abstract: A ophthalmic composition, comprising: an aqueous liquid medium, and an effective amount of polyquaternium-1 made by a process of: a) mixing 1,4-bis-dimethylamino-2-butene, triethanolamine and an acid; b) introducing a 1,4-dichloro-2-butene to the mixture, and c) isolating polyquaternium-1 having a molecular weight as determined by a proton NMR method of about 10,000 or more, at a yield of at least about 50%.
    Type: Grant
    Filed: January 25, 2010
    Date of Patent: January 31, 2012
    Assignee: Abbot Medical Optics Inc.
    Inventor: Zhi-Jian Yu
  • Patent number: 7999063
    Abstract: A multipurpose solution for contact lens care, comprising: an aqueous liquid medium; a quaternary ammonium polymer having an average molecular weight as determined by the proton NMR method of at least 22 k, and methods for making.
    Type: Grant
    Filed: April 23, 2009
    Date of Patent: August 16, 2011
    Assignee: Abbott Medical Optics Inc.
    Inventor: Zhi-Jian Yu
  • Patent number: 7999064
    Abstract: A multipurpose solution for contact lens care, comprising: an aqueous liquid medium; a quaternary ammonium polymer having an average molecular weight as determined by the proton NMR method of at least 28 k, and methods for making the same.
    Type: Grant
    Filed: April 23, 2009
    Date of Patent: August 16, 2011
    Assignee: Abbott Medical Optics Inc.
    Inventor: Zhi-Jian Yu
  • Publication number: 20110027214
    Abstract: The present embodiments relate to a novel method of making quaternary ammonium polymers comprising the steps of: a) mixing 1,4-bis-dimethylamino-2-butene, triethanolamine, water and an acid; and b) introducing a 1,4-dihalo-2-butene to the mixture so as to initiate a reaction resulting in the quaternary ammonium polymer.
    Type: Application
    Filed: January 25, 2010
    Publication date: February 3, 2011
    Applicant: Abbott Medical Optics Inc.
    Inventor: Zhi-Jian Yu
  • Publication number: 20100305046
    Abstract: Disclosed herein are stable oil-in-water emulsion ophthalmic topical liquid compositions having an average particle size less than 1 ?m including at least one plant-derived oil other than castor oil wherein the oil comprises only aliphatic side chains free of polar pendent groups. The oil-in-water emulsion ophthalmic topical liquid compositions also include a hydrophilic surfactant having an HLB value between approximately 10 and 14, a vegetable oil-derived hydrophobic non-co-block surfactant having unsaturated side chains that contain less than four oxygen atoms having an HLB value between approximately 4 and 6 and is a liquid at room temperature. The oil-in-water emulsion ophthalmic topical liquid compositions disclosed herein can further include an amount of cyclosporine A effective to relieve dry eye symptoms.
    Type: Application
    Filed: June 2, 2009
    Publication date: December 2, 2010
    Applicant: Abbott Medical Optics Inc.
    Inventor: Zhi-Jian Yu
  • Publication number: 20100303915
    Abstract: Disclosed herein are non-irritating ophthalmic emulsion compositions useful for treating ocular disorders including dry eye and related methods. More specifically, the ophthalmic compositions disclosed herein combine a high HLB surfactant and a low HLB surfactant together with a plant-derived triglyceride having non-polar aliphatic side chains to form a therapeutic non-irritating eye drop.
    Type: Application
    Filed: June 2, 2009
    Publication date: December 2, 2010
    Applicant: Abbott Medical Optics Inc.
    Inventor: Zhi-Jian Yu
  • Publication number: 20100305045
    Abstract: Disclosed herein are non-irritating ophthalmic emulsion compositions useful for treating ocular disorders including dry eye. More specifically, the ophthalmic compositions disclosed herein combine a high HLB surfactant and a low HLB surfactant together with an omega-3 fatty acid-containing oil having non-polar aliphatic side chains to form a therapeutic non-irritating eye drop.
    Type: Application
    Filed: June 2, 2009
    Publication date: December 2, 2010
    Applicant: Abbott Medical Optics Inc.
    Inventor: Zhi-Jian Yu
  • Publication number: 20100273888
    Abstract: A multipurpose solution for contact lens care, comprising: an aqueous liquid medium; a quaternary ammonium polymer having an average molecular weight as determined by the proton NMR method of at least 28 k, and methods for making the same.
    Type: Application
    Filed: April 23, 2009
    Publication date: October 28, 2010
    Applicant: Abbott Medical Optics Inc.
    Inventor: Zhi-Jian Yu
  • Publication number: 20100234319
    Abstract: Disclosed herein are ophthalmic solutions and methods of using the solutions which comprise a complex of at least one cationic component and an anionic polymer, wherein the complex can be used as an antimicrobial agent. The solutions described have complexes which can be dissolved in aqueous ophthalmic solutions due to both lower charge load and lower total polymer concentrations than commonly taught. The complexes display different antimicrobial profiles than the non-complexed antimicrobial agents.
    Type: Application
    Filed: March 11, 2009
    Publication date: September 16, 2010
    Applicant: Abbott Medical Optics Inc.
    Inventor: Zhi-Jian Yu
  • Patent number: 7795374
    Abstract: A method of making antimicrobial quaternary ammonium polymers, comprising: a) mixing 1,4-bis-dimethylamino-2-butene, water, a first portion of triethanolamine and a first portion of acid; b) adding a 1,4-dihalo-2-butene and heating the reaction mixture; c) adding a second portion of triethanolamine and a second portion of acid, and d) isolating a quaternary ammonium polymer having a molecular weight of at least 26 k.
    Type: Grant
    Filed: April 23, 2009
    Date of Patent: September 14, 2010
    Assignee: Abbott Medical Optics Inc.
    Inventor: Zhi-Jian Yu
  • Patent number: 7705112
    Abstract: The present embodiments relate to a novel method of making quaternary ammonium polymers comprising the steps of: a) mixing 1,4-bis-dimethylamino-2-butene, triethanolamine, water and an acid; and b) introducing a 1,4-dihalo-2-butene to the mixture so as to initiate a reaction resulting in the quaternary ammonium polymer.
    Type: Grant
    Filed: April 17, 2007
    Date of Patent: April 27, 2010
    Assignee: Abbott Medical Optics Inc.
    Inventor: Zhi Jian Yu
  • Publication number: 20090318512
    Abstract: A multi-purpose contact lens care solution having high antimicrobial activity comprising, in an aqueous liquid medium, cetylpyridinium chloride and a non-ionic surfactant. In one embodiment of the invention, the non-ionic surfactant is a poly(oxypropylene)-poly(oxyethylene) block copolymer. The solution may optionally also include additional antimicrobial components, a buffer component, a viscosity inducing component, a surfactant, taurine, propylene glycol and/or a tonicity component. This solution additionally prevents losses in ocular tissue membrane integrity during contact lens wear.
    Type: Application
    Filed: May 21, 2009
    Publication date: December 24, 2009
    Applicant: Advanced Medical Optics, Inc.
    Inventors: Zhi-Jian Yu, Stanley W. Huth
  • Publication number: 20090247640
    Abstract: Antimicrobial or preservative compositions with high user comfort and/or low ocular irritation. The compositions comprise a polyquaternary ammonium compound and an amidoamine having an alcohol group and exhibit synergistic antimicrobial activity. The compositions may be used as stand-alone antimicrobials/preservatives or may be incorporated into other ocular compositions such as those for ocular lens care or the treatment of ocular conditions.
    Type: Application
    Filed: March 26, 2008
    Publication date: October 1, 2009
    Applicant: Advanced Medical Optics, Inc.
    Inventor: Zhi-Jian Yu
  • Patent number: 7578996
    Abstract: A multi-purpose contact lens care solution having high antimicrobial activity comprising, in an aqueous liquid medium, cetylpyridinium chloride and a non-ionic surfactant. In one embodiment of the invention, the non-ionic surfactant is a poly(oxypropylene)-poly(oxyethylene) block copolymer. The solution may optionally also include additional antimicrobial components, a buffer component, a viscosity inducing component, a surfactant, taurine, propylene glycol and/or a tonicity component. This solution additionally prevents losses in ocular tissue membrane integrity during contact lens wear.
    Type: Grant
    Filed: April 7, 2004
    Date of Patent: August 25, 2009
    Assignee: Advanced Medical Optics, Inc.
    Inventors: Zhi-Jian Yu, Stanley W. Huth