Patents by Inventor Erning Xia

Erning Xia 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: 20240066181
    Abstract: A viscoelastic composition is disclosed which comprises (a) tris(hydroxymethyl)aminomethane or a salt thereof; (b) a phosphate buffer agent; and (c) a viscoelastic agent having an average molecular weight of about 100 to about 5,000,000.
    Type: Application
    Filed: October 10, 2023
    Publication date: February 29, 2024
    Inventors: Kimberly Anne Millard, Madhu Ayyagari, Erning Xia, Bill Reindel
  • Patent number: 11660370
    Abstract: A packaging system for storing ophthalmic devices such as contact lenses and methods for packaging such ophthalmic devices with solutions is disclosed. The packaging system contains an unused, ophthalmic device in an aqueous packaging solution comprising tris(hydroxymethyl)aminomethane or a salt thereof; wherein the solution has an osmolality of at least about 200 mOsm/kg and a pH in the range of about 6 to about 9.
    Type: Grant
    Filed: December 14, 2021
    Date of Patent: May 30, 2023
    Assignee: BAUSCH & LOMB INCORPORATED
    Inventors: Alok Kumar Awasthi, Erning Xia, Jennah L. Wolcott, Ruth Julian
  • Publication number: 20220105230
    Abstract: A packaging system for storing ophthalmic devices such as contact lenses and methods for packaging such ophthalmic devices with solutions is disclosed. The packaging system contains an unused, ophthalmic device in an aqueous packaging solution comprising tris(hydroxymethyl)aminomethane or a salt thereof; wherein the solution has an osmolality of at least about 200 mOsm/kg and a pH in the range of about 6 to about 9.
    Type: Application
    Filed: December 14, 2021
    Publication date: April 7, 2022
    Inventors: Alok Kumar Awasthi, Erning Xia, Jennah L. Wolcott, Ruth Julian
  • Patent number: 11253625
    Abstract: A packaging system for storing ophthalmic devices such as contact lenses and methods for packaging such ophthalmic devices with solutions is disclosed. The packaging system contains an unused, ophthalmic device in an aqueous packaging solution comprising tris(hydroxymethyl)aminomethane or a salt thereof; wherein the solution has an osmolality of at least about 200 mOsm/kg and a pH in the range of about 6 to about 9.
    Type: Grant
    Filed: May 21, 2019
    Date of Patent: February 22, 2022
    Assignee: Bausch & Lomb Incorporated
    Inventors: Alok Kumar Awasthi, Erning Xia, Jennah L. Wolcott, Ruth Julian
  • Publication number: 20220040367
    Abstract: A packaging system for the storage of an ophthalmic device is disclosed. The packaging system comprises a sealed container containing one or more unused ophthalmic devices immersed in an aqueous packaging solution comprising (a) one or more osmoprotectants, (b) one or more poloxamer comfort agents and (c) one or more polyol demulcents, wherein the aqueous packaging solution has an osmolality of at least about 150 mOsm/kg, a pH of about 6 to about 9 and is heat sterilized.
    Type: Application
    Filed: August 10, 2021
    Publication date: February 10, 2022
    Inventors: Vicki Barniak, Catherine Scheuer, Ruth Julian, William T. Reindel, Erning Xia
  • Publication number: 20200000954
    Abstract: A packaging system for storing ophthalmic devices such as contact lenses and methods for packaging such ophthalmic devices with solutions is disclosed. The packaging system contains an unused, ophthalmic device in an aqueous packaging solution comprising tris(hydroxymethyl)aminomethane or a salt thereof; wherein the solution has an osmolality of at least about 200 mOsm/kg and a pH in the range of about 6 to about 9.
    Type: Application
    Filed: May 21, 2019
    Publication date: January 2, 2020
    Inventors: Alok Kumar Awasthi, Erning Xia, Jennah L. Wolcott, Ruth Julian
  • Publication number: 20190151500
    Abstract: A viscoelastic composition is disclosed which comprises (a) tris(hydroxymethyl)aminomethane or a salt thereof; (b) a phosphate buffer agent; and (c) a viscoelastic agent having an average molecular weight of about 100 to about 5,000,000.
    Type: Application
    Filed: November 16, 2018
    Publication date: May 23, 2019
    Inventors: Kimberly Anne Millard, Madhu Ayyagari, Erning Xia, Bill Reindel
  • Publication number: 20190038795
    Abstract: The invention is directed to a method of cleaning and disinfecting a contact lens. The method includes instructing a consumer to disinfect their contact lens comprising the following steps: remove a contact from an eye and position the lens in a lens assembly that includes a cap member; add a disinfection solution to the lens case such that the lens is submerged in the solution upon closure of the lens case with the cap member. The disinfection solution will comprise 0.5 wt. % to 6 wt. % hydrogen peroxide or a chemical precursor of hydrogen peroxide, and a P-metal modulating compound. The presence of the P-metal modulating compound in the disinfection solution decreases the neutralization rate of the hydrogen peroxide. The disinfection system exhibits a pseudo first-order, half-life of hydrogen peroxide from 12 minutes to 30 minutes over an initial sixty minutes of neutralization following exposure of the disinfection solution to a catalyst comprising a P-metal.
    Type: Application
    Filed: October 11, 2018
    Publication date: February 7, 2019
    Inventors: Kimberly Anne Millard, Erning Xia, Suzanne F. Groemminger, Jenilee Kilbury
  • Patent number: 10130733
    Abstract: The invention is directed to a method of cleaning and disinfecting a contact lens. The method includes instructing a consumer to disinfect their contact lens comprising the following steps: remove a contact from an eye and position the lens in a lens assembly that includes a cap member; add a disinfection solution to the lens case such that the lens is submerged in the solution upon closure of the lens case with the cap member. The disinfection solution will comprise 0.5 wt. % to 6 wt. % hydrogen peroxide or a chemical precursor of hydrogen peroxide, and a P-metal modulating compound. The presence of the P-metal modulating compound in the disinfection solution decreases the neutralization rate of the hydrogen peroxide. The disinfection system exhibits a pseudo first-order, half-life of hydrogen peroxide from 12 minutes to 30 minutes over an initial sixty minutes of neutralization following exposure of the disinfection solution to a catalyst comprising a P-metal.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: November 20, 2018
    Assignee: Bausch & Lomb Incorporated
    Inventors: Kimberly Anne Millard, Erning Xia, Suzanne F. Groemminger, Jenilee Kilbury
  • Patent number: 9481856
    Abstract: A pharmaceutical formulation that is effective in adversely affecting the viability of microorganisms or in inhibiting their growth and that provides better safety and/or comfort to the users comprises a polysaccharide, a source of hydrogen peroxide, and an anti-oxidant. The formulation can further comprise a chelating agent and/or an ophthalmically active agent for treating or controlling a disease or disorder of the eye. The formulation may be used to treat, clean, disinfect, store, wet, or rewet contact lenses.
    Type: Grant
    Filed: May 19, 2009
    Date of Patent: November 1, 2016
    Assignee: Bausch & Lomb Incorporated
    Inventors: Erning Xia, Michael E. Allen, Steven K. MacLeod, Tammy J. Kleiber, Craig M. Cody
  • Patent number: 9375401
    Abstract: Ophthalmic compositions comprising 0.005 wt. % to 2.0 wt. % of alkoxylated natural waxes selected from the group consisting of alkoxylated lanolin and alkoxylated jojoba, and a method of treating a patient diagnosed with dry eye syndrome, or for cleaning and disinfecting contact lenses, with the ophthalmic compositions.
    Type: Grant
    Filed: January 10, 2013
    Date of Patent: June 28, 2016
    Assignee: Bausch ÷ Lomb Incorporated
    Inventors: Erning Xia, Krista Fridman
  • Patent number: 9279095
    Abstract: A poly(nitrogen/amine) derivative of a natural wax of formula I, and ophthalmic compositions and contact lens care solutions that contain the poly(nitrogen/amine) derivative of a natural wax of formula I. The invention is also directed to a method of treating a patient with dry eyes, the method comprising instructing a patient to administer one or more eye drops of the ophthalmic composition that includes a poly(nitrogen/amine) derivative of a natural wax of formula I.
    Type: Grant
    Filed: January 23, 2014
    Date of Patent: March 8, 2016
    Assignee: Bausch & Lomb Incorporated
    Inventors: Xiaojun Michael Liu, Krista Fridman, Erning Xia
  • Publication number: 20150297511
    Abstract: Ophthalmic compositions comprising 0.005 wt. % to 2.0 wt. % of alkoxylated natural waxes selected from the group consisting of alkoxylated lanolin and alkoxylated jojoba, and a method of treating a patient diagnosed with dry eye syndrome, or for cleaning and disinfecting contact lenses, with the ophthalmic compositions.
    Type: Application
    Filed: January 10, 2013
    Publication date: October 22, 2015
    Inventors: Erning XIA, Krista FRIDMAN
  • Patent number: 9096819
    Abstract: Ophthalmic compositions that comprise 0.1 ppm to 50 ppm of a cationic antimicrobial component selected from the group consisting of biguanides, polymeric biguanides, quaternium ammonium compounds and any one mixture thereof; 0.005 wt. % to 2 wt. % of an anionic biopolymer; and 0.01 wt. % to 2 wt. % of an amphoteric surfactant of general formula I wherein R1 is R or —(CH2)n—NHC(O)R, wherein R is a C8-C30alkyl optionally substituted with hydroxyl and n is 2, 3 or 4; R2 and R3 are each independently selected from C1-C4alkyl; R4 is a C2-C8alkylene optionally substituted with hydroxyl; and Y is CO2? or SO3. The invention is also direct to the use of the ophthalmic compositions to clean and disinfect contact lenses, and in particular, soft, silicone hydrogel contact lenses.
    Type: Grant
    Filed: January 31, 2008
    Date of Patent: August 4, 2015
    Assignee: Bausch & Lomb Incorporated
    Inventors: Erning Xia, Susan E. Burke, Srini Venkatesh, Vicki Barniak, Praveen Tyle
  • Patent number: 8932646
    Abstract: A contact lens disinfecting solution that comprises 0.5 wt. % to 6 wt. % hydrogen peroxide, or a chemical precursor of hydrogen peroxide, and a P-metal modulating compound. The presence of the P-metal modulating compound in the disinfecting hydrogen peroxide solution slows the rate at which the hydrogen peroxide is neutralized, particularly during the initial two hours, by a catalyst element that includes a P-metal. This reduction in rate of peroxide neutralization provides a more effective solution for killing certain microorganisms and fungi.
    Type: Grant
    Filed: January 24, 2011
    Date of Patent: January 13, 2015
    Assignee: Bausch & Lomb Incorporated
    Inventors: Kimberly Anne Millard, Erning Xia, Suzanne F. Groemminger, Jenilee Kilbury
  • Publication number: 20140206764
    Abstract: A poly(nitrogen/amine) derivative of a natural wax of formula I, and ophthalmic compositions and contact lens care solutions that contain the poly(nitrogen/amine) derivative of a natural wax of formula I. The invention is also directed to a method of treating a patient with dry eyes, the method comprising instructing a patient to administer one or more eye drops of the ophthalmic composition that includes a poly(nitrogen/amine) derivative of a natural wax of formula I.
    Type: Application
    Filed: January 23, 2014
    Publication date: July 24, 2014
    Applicant: BAUSCH & LOMB INCORPORATED
    Inventors: Xiaojun Michael Liu, Krista Fridman, Erning Xia
  • Patent number: 8664180
    Abstract: Ophthalmic composition that includes 0.05% w/v to 2% w/v diglycine or a salt thereof; 0.01 ppm to 3 ppm poly(hexamethylene biguanide); 1 ppm to 10 ppm ?-[4-tris(2-hydroxyethyl)ammonium chloride-2-butenyl]poly[1-dimethylammonium chloride-2-butenyl]-?-tris(2-hydroxyethyl)ammonium chloride; and 0.1% w/v to 2% w/v of one or more boron buffering compounds.
    Type: Grant
    Filed: February 6, 2012
    Date of Patent: March 4, 2014
    Assignee: Bausch & Lomb Incorporated
    Inventors: Susan E. Burke, Erning Xia, Catherine A. Scheuer, Srini Venkatesh
  • Publication number: 20130202547
    Abstract: Ophthalmic composition that includes 0.05% w/v to 2% w/v diglycine or a salt thereof; 0.01 ppm to 3 ppm poly(hexamethylene biguanide); 1 ppm to 10 ppm ?-[4-tris(2-hydroxyethyl)ammonium chloride-2-butenyl]poly[1-dimethylammonium chloride-2-butenyl]-?-tris(2-hydroxyethyl)ammonium chloride; and 0.1% w/v to 2% w/v of one or more boron buffering compounds.
    Type: Application
    Filed: February 6, 2012
    Publication date: August 8, 2013
    Inventors: Susan E. Burke, Erning Xia, Catherine Scheuer, Srini Venkastesh
  • Patent number: 8334283
    Abstract: Compositions for treating, reducing, ameliorating, or preventing infections comprise a fluoroquinolone having Formulae I-VIII and an additional anti-infective agent. Methods for treating, reducing, ameliorating, or preventing such infection use such compositions. Such compositions and methods can be effective against mixed types of pathogens including certain antibiotic-resistant microbial pathogens found in such infections.
    Type: Grant
    Filed: April 3, 2012
    Date of Patent: December 18, 2012
    Assignee: Bausch & Lomb Incorporated
    Inventors: Praveen Tyle, Erning Xia, Hongna Wang, Susan E. Norton, Pramod Kumar Gupta, Keith W. Ward, Lynne Brunner
  • Patent number: 8324171
    Abstract: Ophthalmic composition that includes 0.05% w/v to 2% w/v diglycine or a salt thereof; 1.0 ppm to 8.5 ppm alexidine, and 0.1% w/v to 2% w/v of one or more boron buffering compounds.
    Type: Grant
    Filed: February 6, 2012
    Date of Patent: December 4, 2012
    Assignee: Bausch & Lomb Incorporated
    Inventors: Susan E. Burke, Erning Xia, Catherine A. Scheuer, Srini Venkatesh