Patents by Inventor Masood Chowhan

Masood Chowhan 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: 9993483
    Abstract: The present invention relates to methods for treating an ophthalmic, otic, or nasal infection comprising treating the infected tissue with a composition comprising finafloxacin or a finafloxacin derivative. The present invention also relates to antimicrobial compositions comprising finafloxacin or a finafloxacin derivative. The compositions are suitable for the treatment of ophthalmic, otic, or nasal infections.
    Type: Grant
    Filed: July 27, 2015
    Date of Patent: June 12, 2018
    Assignee: Alcon Research, Ltd.
    Inventors: David W. Stroman, Masood A. Chowhan, Kenneth C. Appell
  • Publication number: 20170333441
    Abstract: The present invention relates to methods for treating a microbial infection comprising treating the infected tissue with a composition comprising a quinolone such as finafloxacin and a divalent cation such as magnesium. The present invention also relates to antimicrobial compositions comprising a quinolone such as finafloxacin and a divalent cation such as magnesium.
    Type: Application
    Filed: August 8, 2017
    Publication date: November 23, 2017
    Inventors: Malay Ghosh, Masood A. Chowhan
  • Publication number: 20170216228
    Abstract: The present invention is directed to a pharmaceutical submicron suspension and a method of forming the submicron suspension. The submicron suspension is useful for delivery of relatively hydrophobic and/or low solubility therapeutic agent. The submicron suspension and method of forming the submicron suspension typically employ a polymeric material that aids in preventing aggregation of the therapeutic agent.
    Type: Application
    Filed: April 21, 2017
    Publication date: August 3, 2017
    Inventors: Bahram Asgharian, Ernesto J. Castillo, Masood A. Chowhan
  • Patent number: 9694021
    Abstract: The present invention is related to pharmaceutical compositions that include a phosphonium antimicrobial agent. In a preferred embodiment, the present invention relates to an otic, nasal or ophthalmic composition (e.g., an aqueous ophthalmic solution) that includes a phosphonium salt compound as an antimicrobial agent. The compositions typically possess sufficient antimicrobial activity to satisfy USP preservative efficacy requirements and/or similar preservative standards (e.g., EP and JP).
    Type: Grant
    Filed: November 20, 2013
    Date of Patent: July 4, 2017
    Assignee: ALCON RESEARCH, LTD
    Inventors: Masood A. Chowhan, Wesley Wehsin Han, L. Wayne Schneider
  • Patent number: 9662398
    Abstract: The present invention generally relates to suspension compositions having a carboxyvinyl polymer such as a carbomer, a galactomannan such as guar, and a borate compound. A sparingly soluble particulate compound such as nepafenac is also included in the compositions. The sparingly soluble particulate compound has a small particle size to enhance bioavailability of the compound.
    Type: Grant
    Filed: November 12, 2014
    Date of Patent: May 30, 2017
    Assignee: Alcon Research, Ltd.
    Inventors: Masood A. Chowhan, Malay Ghosh, Bahram Asgharian, Wesley Weshin Han
  • Publication number: 20170020818
    Abstract: The present invention generally relates to suspension compositions having a carboxyvinyl polymer such as a carbomer, a galactomannan such as guar, and a borate compound. A sparingly soluble particulate compound such as nepafenac is also included in the compositions. The sparingly soluble particulate compound has a small particle size to enhance bioavailability of the compound.
    Type: Application
    Filed: October 4, 2016
    Publication date: January 26, 2017
    Inventors: Masood A. Chowhan, Malay Ghosh, Bahram Asgharian, Wesley Weshin Han
  • Publication number: 20160361254
    Abstract: The present invention is directed to the provision of an ophthalmic composition suitable for intravitreal injection. The composition includes an amount of complexing agent that reacts with one or more endogenous components (e.g., hyaluronic acid) in the eye to form a mass of enhanced viscosity. This mass can aid in creating a desirable release profile of therapeutic agent.
    Type: Application
    Filed: August 24, 2016
    Publication date: December 15, 2016
    Inventors: Masood A. Chowhan, Thomas C. Hohman, Ernesto J. Castillo, Wesley Wehsin Han
  • Patent number: 9504691
    Abstract: The present invention relates to methods for treating an ophthalmic, otic, or nasal infection comprising treating the infected tissue with a suspension composition comprising finafloxacin or a finafloxacin derivative. The present invention also relates to antimicrobial compositions comprising finafloxacin free base or a finafloxacin derivative. The compositions are suitable for the treatment of ophthalmic, otic, or nasal infections.
    Type: Grant
    Filed: November 21, 2013
    Date of Patent: November 29, 2016
    Assignee: Alcon Research, Ltd.
    Inventors: Brent G. Boudreaux, Mark J. Bridle, Bryan H. Huynh, Malay Ghosh, Masood A. Chowhan, Laman Alani, Bhagwati P. Kabra
  • Patent number: 9457091
    Abstract: The present invention generally relates to suspension compositions having a carboxyvinyl polymer such as a carbomer, a galactomannan such as guar, and a borate compound. A sparingly soluble particulate compound such as nepafenac is also included in the compositions. The sparingly soluble particulate compound has a small particle size to enhance bioavailability of the compound.
    Type: Grant
    Filed: November 12, 2014
    Date of Patent: October 4, 2016
    Assignee: Alcon Research, Ltd.
    Inventors: Masood A. Chowhan, Malay Ghosh, Bahram Asgharian, Wesley Weshin Han
  • Publication number: 20160279137
    Abstract: The present invention relates to methods for treating an ophthalmic, otic, or nasal infection comprising treating the infected tissue with a suspension composition comprising finafloxacin or a finafloxacin derivative. The present invention also relates to antimicrobial compositions comprising finafloxacin free base or a finafloxacin derivative. The compositions are suitable for the treatment of ophthalmic, otic, or nasal infections.
    Type: Application
    Filed: June 3, 2016
    Publication date: September 29, 2016
    Inventors: Brent G. Boudreaux, Mark J. Bridle, Bryan H. Huynh, Malay Ghosh, Masood A. Chowhan, Laman Alani, Bhagwati P. Kabra
  • Patent number: 9446093
    Abstract: The present invention is directed to the provision of an ophthalmic composition suitable for intravitreal injection. The composition includes an amount of complexing agent that reacts with one or more endogenous components (e.g., hyaluronic acid) in the eye to form a mass of enhanced viscosity. This mass can aid in creating a desirable release profile of therapeutic agent.
    Type: Grant
    Filed: October 18, 2013
    Date of Patent: September 20, 2016
    Assignee: Alcon Research, Ltd.
    Inventors: Masood A. Chowhan, Thomas C. Hohman, Ernesto J. Castillo, Wesley Wehsin Han
  • Publication number: 20160095927
    Abstract: Ophthalmic compositions suitable for use as artificial tears or as vehicles for ophthalmic drugs are disclosed. The compositions contain a combination of two polymers that have a synergistic effect on viscosity.
    Type: Application
    Filed: October 3, 2014
    Publication date: April 7, 2016
    Applicant: NOVARTIS AG
    Inventors: Masood A. Chowhan, Huagang Chen
  • Publication number: 20150328229
    Abstract: The present invention relates to methods for treating an ophthalmic, otic, or nasal infection comprising treating the infected tissue with a composition comprising finafloxacin or a finafloxacin derivative. The present invention also relates to antimicrobial compositions comprising finafloxacin or a finafloxacin derivative. The compositions are suitable for the treatment of ophthalmic, otic, or nasal infections.
    Type: Application
    Filed: July 27, 2015
    Publication date: November 19, 2015
    Inventors: David W. Stroman, Masood A. Chowhan, Kenneth C. Appell
  • Patent number: 9119859
    Abstract: The present invention relates to methods for treating an ophthalmic, otic, or nasal infection comprising treating the infected tissue with a composition comprising finafloxacin or a finafloxacin derivative. The present invention also relates to antimicrobial compositions comprising finafloxacin or a finafloxacin derivative. The compositions are suitable for the treatment of ophthalmic, otic, or nasal infections.
    Type: Grant
    Filed: August 15, 2013
    Date of Patent: September 1, 2015
    Assignee: Alcon Research, Ltd.
    Inventors: David W. Stroman, Masood A. Chowhan, Kenneth C. Appell
  • Publication number: 20150209466
    Abstract: The use of certain synthetic phospholipids to preserve pharmaceutical compositions from microbial contamination is described. The synthetic phospholipids have unique molecular arrangements wherein a phosphate group is linked to a quaternary ammonium functionality via a substituted-propenyl group, and the quaternary ammonium functionality is further linked to at least one long hydrocarbon chain. Such molecular arrangements are what make the phospholipids of formula (I) highly water soluble, e.g., the length of the hydrocarbon chain assists to maintain solubility and efficacy of the molecules for the uses described herein. The synthetic phospholipids described herein have been found to be particularly useful as antimicrobial preservatives for ophthalmic, otic and nasal pharmaceutical compositions, especially ophthalmic compositions. These compounds may also be utilized to disinfect contact lenses.
    Type: Application
    Filed: February 19, 2015
    Publication date: July 30, 2015
    Applicant: ALCON RESEARCH, LTD.
    Inventors: Malay Ghosh, Masood A. Chowhan, L. Wayne Schneider
  • Publication number: 20150174137
    Abstract: The present invention relates to methods for treating a microbial infection comprising treating the infected tissue with a composition comprising a quinolone such as finafloxacin and a divalent cation such as magnesium. The present invention also relates to antimicrobial compositions comprising a quinolone such as finafloxacin and a divalent cation such as magnesium.
    Type: Application
    Filed: February 26, 2015
    Publication date: June 25, 2015
    Inventors: Malay Ghosh, Masood A. Chowhan
  • Publication number: 20150072011
    Abstract: The present invention generally relates to suspension compositions having a carboxyvinyl polymer such as a carbomer, a galactomannan such as guar, and a borate compound. A sparingly soluble particulate compound such as nepafenac is also included in the compositions. The sparingly soluble particulate compound has a small particle size to enhance bioavailability of the compound.
    Type: Application
    Filed: November 12, 2014
    Publication date: March 12, 2015
    Inventors: Masood A. CHOWHAN, Malay GHOSH, Bahram ASGHARIAN, Wesley Weshin HAN
  • Patent number: 8921337
    Abstract: The present invention generally relates to suspension compositions having a carboxyvinyl polymer such as a carbomer, a galactomannan such as guar, and a borate compound. A sparingly soluble particulate compound such as nepafenac is also included in the compositions. The sparingly soluble particulate compound has a small particle size to enhance bioavailability of the compound.
    Type: Grant
    Filed: December 1, 2010
    Date of Patent: December 30, 2014
    Assignee: Alcon Research, Ltd.
    Inventors: Masood A. Chowhan, Malay Ghosh, Bahram Asgharian, Wesley Wehsin Han
  • Publication number: 20140294970
    Abstract: The present invention is directed to a pharmaceutical submicron suspension and a method of forming the submicron suspension. The submicron suspension is useful for delivery of relatively hydrophobic and/or low solubility therapeutic agent. The submicron suspension and method of forming the submicron suspension typically employ a polymeric material that aids in preventing aggregation of the therapeutic agent.
    Type: Application
    Filed: June 11, 2014
    Publication date: October 2, 2014
    Inventors: Bahram Asgharian, Ernesto J. Castillo, Masood A. Chowhan
  • Publication number: 20140162990
    Abstract: The present invention relates to methods for treating an ophthalmic, otic, or nasal infection comprising treating the infected tissue with a suspension composition comprising finafloxacin or a finafloxacin derivative. The present invention also relates to antimicrobial compositions comprising finafloxacin free base or a finafloxacin derivative. The compositions are suitable for the treatment of ophthalmic, otic, or nasal infections.
    Type: Application
    Filed: November 21, 2013
    Publication date: June 12, 2014
    Applicant: ALCON RESEARCH, LTD.
    Inventors: Brent G. Boudreaux, Mark J. Bridle, Bryan H. Huynh, Malay Ghosh, Masood A. Chowhan, Laman Alani, Bhagwati P. Kabra