Patents by Inventor Srini Venkatesh

Srini Venkatesh 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: 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
  • 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
  • Publication number: 20120283333
    Abstract: Ophthalmic compositions that comprise 0.5 ppm to 15 ppm ?-[4-tris(2-hydroxyethyl)-ammonium chloride-2-butenyl]poly[1-dimethyl ammonium chloride-2-butenyl]-?-tris(2-hydroxyethyl) ammonium chloride; 0.005 wt. % to 0.05 wt. % hyaluronic acid; citrate, citric acid or a mixture thereof; and 0.01 wt. % to 0.8 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 the group consisting of hydrogen and 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: Application
    Filed: July 20, 2012
    Publication date: November 8, 2012
    Inventors: Erning Xia, Susan E. Burke, Srini Venkatesh, Vicki L. Barniak
  • Patent number: 8119112
    Abstract: Ophthalmic compositions that comprise 0.1 ppm to 10 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 0.15 wt. % of hyaluronic acid; and 0.01 wt. % to 1.0 wt. % of an amphoteric surfactant of general formula I wherein R1 is R or —(CH2)n—NHC(O)R, wherein R is a C8-C16alkyl optionally substituted with hydroxyl and n is 2, 3 or 4; R2 and R3 are each independently selected from methyl, ethyl, propyl or iso-propyl; and R4 is a C2-C8alkylene optionally substituted with hydroxyl. 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: September 3, 2008
    Date of Patent: February 21, 2012
    Assignee: Bausch & Lomb Incorporated
    Inventors: Erning Xia, Susan E. Burke, Srini Venkatesh, Vicki Barniak
  • Publication number: 20110251147
    Abstract: Compositions for treating or controlling infections comprise a fluoroquinolone having Formulae I-VIII and have a pH in the range from about 3.5 to about 5.5 or from about 10.5 to about 12. Methods for treating or controlling such infection use such compositions. Such compositions and methods can deliver a higher amount of the fluoroquinolone to the affected site.
    Type: Application
    Filed: June 24, 2011
    Publication date: October 13, 2011
    Inventors: Srini Venkatesh, Hongna Wang, Erning Xia, Matthew S. Jonasse
  • Publication number: 20100286010
    Abstract: An aqueous solution for cleaning and disinfecting a contact lens comprising 0.5 ppm to 5 ppm of 1,1?-hexamethylene-bis[5-(2-ethylhexyl)biguanide; 0.5 ppm to 3 ppm ?-[4-tris(2-hydroxyethyl)-ammonium chloride-2-butenyl]poly[1-dimethyl ammonium chloride-2-butenyl]-?-tris(2-hydroxyethyl)ammonium chloride; 0.005 wt. % to 0.04 wt. % hyaluronic acid; a boric acid/borate buffer; and a nonionic surfactant selected from poloxamer, poloxamine or any combination thereof.
    Type: Application
    Filed: July 21, 2010
    Publication date: November 11, 2010
    Inventors: Erning Xia, Susan E. Burke, Srini Venkatesh, Vicki Barniak
  • Publication number: 20100104551
    Abstract: A composition of a long-acting enzyme comprises the enzyme in a formulation comprising a buffer and an additive selected from the group consisting of tranexamic acid, ?-aminocaproic acid, and analogs of L-lysine other than tranexamic acid and ?-aminocaproic acid, combinations thereof, and mixtures thereof. The composition can further comprise another additive selected from the group consisting of L-lysine, L-arginine, L-ornithine (or its pharmaceutically acceptable salts; e.g., L-ornithine hydrochloride), ?-aminobutyric acid, 5-aminovaleric acid, 7-aminoheptanoic acid, glycylglycine, triglycine, N-?-acetyl-L-arginine, betaine, sarcosine, gelatin, HSA, streptokinase, tPA, uPA, non-ionic surfactants, glycerin, D-sorbitol, combinations thereof, and mixtures thereof. A method for prolonging the activity of an autodegradable enzyme comprises storing the enzyme after manufacture at a low pH, and reconstituting the acidified enzyme before use with a solution containing at least one of such additives.
    Type: Application
    Filed: October 22, 2009
    Publication date: April 29, 2010
    Applicant: Talecris Biotherapeutics, Inc.
    Inventors: Dharmendra M. Jani, Kai Kwok, Gregory L. McIntire, Bruce A. Pfeffer, Afshin Shafiee, Ruiwen Shi, Srini Venkatesh, Hongna Wang, Yan Huang, Stephen R. Davio
  • Patent number: 7632794
    Abstract: A contact lens care solution comprising one or more alkyldimonium hydroxypropyl alkylglucosides of general formula I or general formula II wherein R is a straight or branched C8-C24alkyl; A is —CH2CH(OH)CH2N+(CH3)2R1X?, wherein R1 is a C8-C24alkyl and X? is a common counteranion, n is an average value from 1 to 6 and m is an average value from 1 to 2. The solution is formulated to clean and disinfect contact lenses or the solution is formulated as a rewet eye drop for use with contact lenses.
    Type: Grant
    Filed: September 22, 2008
    Date of Patent: December 15, 2009
    Assignee: Bausch & Lomb Incorporated
    Inventors: Erning Xia, Kimberly Millard, Srini Venkatesh
  • Publication number: 20090196846
    Abstract: Ophthalmic compositions that comprise 0.1 ppm to 10 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 0.15 wt. % of hyaluronic acid; and 0.01 wt. % to 1.0 wt. % of an amphoteric surfactant of general formula I wherein R1 is R or —(CH2)n—NHC(O)R, wherein R is a C8-C16alkyl optionally substituted with hydroxyl and n is 2, 3 or 4; R2 and R3 are each independently selected from methyl, ethyl, propyl or iso-propyl; and R4 is a C2-C8alkylene optionally substituted with hydroxyl. 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: Application
    Filed: September 3, 2008
    Publication date: August 6, 2009
    Inventors: Erning Xia, Susan E. Burke, Srini Venkatesh, Vicki Barniak
  • Publication number: 20080311070
    Abstract: An ophthalmic composition comprising a polymeric biguanide composition having less than 18 mol % of terminal amine groups and 55 mol % or greater of terminal guanidine groups as measured by 13C NMR, and 0.005 w/v % to 0.04 w/v % hyaluronic acid. Alternatively, the ophthalmic composition comprises a polymeric biguanide composition comprising less than 18 mol % of terminal amine groups and 40 mol % or greater of terminal cyanoguanidino groups as measured by 13C NMR, and 0.005 w/v % to 0.04 w/v % hyaluronic acid. The compositions can be used for cleaning, disinfecting or packaging a contact lens.
    Type: Application
    Filed: June 2, 2008
    Publication date: December 18, 2008
    Inventors: Susan E. Burke, Srini Venkatesh, David J. Heiler
  • Publication number: 20080200442
    Abstract: Compositions for treating, reducing, ameliorating, or preventing infection of an ear or upper respiratory tract comprise a fluroquinolone having Formula I, II, or III. Methods for treating, reducing, ameliorating, or preventing such infection use such compositions. Such compositions and methods can be effective against certain antibiotic-resistant microbial pathogens found in such infection.
    Type: Application
    Filed: February 16, 2007
    Publication date: August 21, 2008
    Inventors: Srini Venkatesh, Matthew S. Jonasse, Hongna Wang
  • Publication number: 20070142478
    Abstract: Provided herein is a pharmaceutically acceptable composition comprising a biguanide containing antimicrobial agent and an additional antimicrobial agent. The invention further comprises topically administering the pharmaceutically acceptable composition to a patient in need of treatment.
    Type: Application
    Filed: December 14, 2006
    Publication date: June 21, 2007
    Inventors: Erning Xia, Hongna Wang, Srini Venkatesh, Pramod Gupta, Norman LaFrance
  • Publication number: 20070140897
    Abstract: The present invention includes an ophthalmically acceptable composition for use in the ocular region of a patient, the ophthalmically acceptable composition comprising water, a biguanide containing antimicrobial agent and a pH adjusting agent to adjust the pH to a minimum of 4 and a maximum of 6. The invention further comprises administering the ophthalmically acceptable composition to the eye of a patient in need of treatment.
    Type: Application
    Filed: December 21, 2006
    Publication date: June 21, 2007
    Inventors: Hongna Wang, Erning Xia, Srini Venkatesh
  • Publication number: 20070134231
    Abstract: A composition of a long-acting enzyme comprises the enzyme in a formulation comprising a buffer and an additive selected from the group consisting of tranexamic acid, ?-aminocaproic acid, and analogs of L-lysine other than tranexamic acid and ?-aminocaproic acid, combinations thereof, and mixtures thereof. The composition can further comprise another additive selected from the group consisting of L-lysine, L-arginine, L-ornithine (or its pharmaceutically acceptable salts; e.g., L-ornithine hydrochloride), ?-aminobutyric acid, 5-aminovaleric acid, 7-aminoheptanoic acid, glycylglycine, triglycine, N-?-acetyl-L-arginine, betaine, sarcosine, gelatin, HSA, streptokinase, tPA, uPA, non-ionic surfactants, glycerin, D-sorbitol, combinations thereof, and mixtures thereof. A method for prolonging the activity of an autodegradable enzyme comprises storing the enzyme after manufacture at a low pH, and reconstituting the acidified enzyme before use with a solution containing at least one of such additives.
    Type: Application
    Filed: November 17, 2006
    Publication date: June 14, 2007
    Inventors: Dharmendra Jani, Kai Kwok, Gregory McIntire, Bruce Pfeffer, Afshin Shafiee, Ruiwen Shi, Srini Venkatesh, Hongna Wang, Yan Huang, Stephen Davio