Patents by Inventor Wesley Wehsin Han

Wesley Wehsin Han 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: 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
  • 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: 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
  • 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: 20140107121
    Abstract: The invention provides solution compositions comprising olopatadine and a PDE4 inhibitor compound of Formula I: The invention also provides methods for treating allergic and inflammatory diseases. More particularly, the present invention relates to formulations of olopatadine and their use for treating and/or preventing allergic or inflammatory disorders of the eye, nose, skin, and ear.
    Type: Application
    Filed: December 17, 2013
    Publication date: April 17, 2014
    Applicant: Alcon Research, Ltd.
    Inventors: L. Wayne Schneider, Wesley Wehsin Han, Masood A. Chowhan
  • Publication number: 20140094419
    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: October 18, 2013
    Publication date: April 3, 2014
    Applicant: Alcon Research Ltd.
    Inventors: Masood A. Chowhan, Thomas C. Hohman, Ernesto J. Castillo, Wesley Wehsin Han
  • Publication number: 20140080793
    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: Application
    Filed: November 20, 2013
    Publication date: March 20, 2014
    Applicant: Alcon Research, Ltd.
    Inventors: Masood A. Chowhan, Wesley Wehsin Han, L. Wayne Schneider
  • Patent number: 8399508
    Abstract: Topical formulations of olopatadine for treatment of allergic or inflammatory disorders of the nose are disclosed. The aqueous formulations contain approximately 0.6% (w/v) of olopatadine.
    Type: Grant
    Filed: June 30, 2011
    Date of Patent: March 19, 2013
    Assignee: Alcon Pharmaceuticals Ltd.
    Inventors: Onkar N. Singh, G. Michael Wall, Rajni Jani, Masood A. Chowhan, Wesley Wehsin Han
  • Patent number: 8323630
    Abstract: The present invention is directed to the provision of multi-dose, self-preserved ophthalmic compositions. The compositions possess sufficient antimicrobial activity to satisfy USP preservative efficacy requirements, as well as similar preservative standards (e.g., EP and JP), without requiring the presence of conventional anti-microbial preservative agents, such as benzalkonium chloride. The compositions are effectively preserved by a balanced ionic buffer system containing zinc ions at a concentration of 0.04 to 0.9 mM, preferably 0.04 to 0.4 mM. One aspect of the balanced buffer system is limitation of the amount of buffering anions present to a concentration of 15 mM or less, preferably 5 mM or less. In a preferred embodiment, the compositions also contain borate or, most preferably, one or more borate/polyol complexes. The use of propylene glycol as the polyol in such complexes is strongly preferred.
    Type: Grant
    Filed: April 14, 2011
    Date of Patent: December 4, 2012
    Assignee: Alcon Research, Ltd.
    Inventors: Bhagwati P. Kabra, Masood A. Chowhan, L. Wayne Schneider, Wesley Wehsin Han
  • Patent number: 8268299
    Abstract: The present invention is directed to the provision of multi-dose, self-preserved ophthalmic compositions. The compositions possess sufficient antimicrobial activity to satisfy USP preservative efficacy requirements, as well as similar preservative standards (e.g., EP and JP), without requiring the presence of conventional anti-microbial preservative agents, such as benzalkonium chloride. The compositions are effectively preserved by a balanced ionic buffer system containing zinc ions at a concentration of 0.04 to 0.9 mM, preferably 0.04 to 0.4 mM. One aspect of the balanced buffer system is limitation of the amount of buffering anions present to a concentration of 15 mM or less, preferably 5 mM or less. In a preferred embodiment, the compositions also contain borat or, most preferably, one or more borate/polyol complexes. The use of propylene glycol as the polyol in such complexes is strongly preferred.
    Type: Grant
    Filed: September 20, 2007
    Date of Patent: September 18, 2012
    Assignee: Alcon Research, Ltd.
    Inventors: Bhagwati P. Kabra, Masood A. Chowhan, L. Wayne Schneider, Wesley Wehsin Han
  • Publication number: 20120053161
    Abstract: Solution formulations containing a corticosteroid, cyclodextrin, and xanthan gum are disclosed. The formulations are intended for topical application to the eye, ear, or nose.
    Type: Application
    Filed: July 28, 2009
    Publication date: March 1, 2012
    Applicant: Novartis AG
    Inventors: Ernesto J. Castillo, Huixiang Zhang, Glenn D. Stafford, Wesley Wehsin Han
  • Publication number: 20120022149
    Abstract: There are disclosed pharmaceutical compositions, particularly ophthalmic compositions, that contain relatively high concentrations of solubility enhancing polymer (e.g., polyether polymer, polyvinyl polymer or a combination thereof) for providing enhanced solubility of one or more therapeutic agents. In a preferred embodiment, the composition is a multi-dose topical aqueous ophthalmic composition that contains relatively high concentrations of solubility enhancing polymer (e.g., polyether polymer, polyvinyl polymer or a combination thereof) for providing enhanced solubility of one or more therapeutic agents.
    Type: Application
    Filed: July 20, 2011
    Publication date: January 26, 2012
    Inventors: Masood A. Chowhan, Malay Ghosh, Wesley Wehsin Han, Way-Yu Lin, Vincent Nguyen
  • Publication number: 20110306659
    Abstract: Topical formulations of olopatadine for treatment of allergic or inflammatory disorders of the nose are disclosed. The aqueous formulations contain approximately 0.6% (w/v) of olopatadine.
    Type: Application
    Filed: June 30, 2011
    Publication date: December 15, 2011
    Applicant: Novartis AG
    Inventors: Onkar N. Singh, G. Michael Wall, Rajni Jani, Masood A. Chowhan, Wesley Wehsin Han
  • Publication number: 20110269719
    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: Application
    Filed: April 26, 2011
    Publication date: November 3, 2011
    Inventors: Masood A. Chowhan, Wesley Wehsin Han, L. Wayne Schneider
  • Publication number: 20110195132
    Abstract: The present invention is directed to the provision of multi-dose, self-preserved ophthalmic compositions. The compositions possess sufficient antimicrobial activity to satisfy USP preservative efficacy requirements, as well as similar preservative standards (e.g., EP and JP), without requiring the presence of conventional anti-microbial preservative agents, such as benzalkonium chloride. The compositions are effectively preserved by a balanced ionic buffer system containing zinc ions at a concentration of 0.04 to 0.9 mM, preferably 0.04 to 0.4 mM. One aspect of the balanced buffer system is limitation of the amount of buffering anions present to a concentration of 15 mM or less, preferably 5 mM or less. In a preferred embodiment, the compositions also contain borate or, most preferably, one or more borate/polyol complexes. The use of propylene glycol as the polyol in such complexes is strongly preferred.
    Type: Application
    Filed: April 14, 2011
    Publication date: August 11, 2011
    Applicant: ALCON RESEARCH, LTD.
    Inventors: Bhagwati P. Kabra, Masood A. Chowhan, L. Wayne Schneider, Wesley Wehsin Han
  • Patent number: 7977376
    Abstract: Topical formulations of olopatadine for treatment of allergic or inflammatory disorders of the nose are disclosed. The aqueous formulations contain approximately 0.6% (w/v) of olopatadine.
    Type: Grant
    Filed: February 7, 2007
    Date of Patent: July 12, 2011
    Assignee: Novartis AG
    Inventors: Onkar N. Singh, G. Michael Wall, Rajni Jani, Masood A. Chowhan, Wesley Wehsin Han
  • Publication number: 20110135743
    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: December 1, 2010
    Publication date: June 9, 2011
    Applicant: ALCON RESEARCH, LTD.
    Inventors: Masood A. Chowhan, Malay Ghosh, Bahram Asgharian, Wesley Wehsin Han
  • Publication number: 20110124734
    Abstract: The present invention relates to methods for disinfecting or cleaning a contact lens comprising contacting a contact lens with a formulation comprising a N-halogenated amino acid and a phase transfer agent for a time sufficient to disinfect or clean the lens. This specification further discloses a formulation for disinfecting a contact lens comprising an N-halogenated amino acid and a phase transfer agent.
    Type: Application
    Filed: January 31, 2011
    Publication date: May 26, 2011
    Applicant: ALCON RESEARCH, LTD.
    Inventors: Masood A. Chowhan, Wesley Wehsin Han, L. Wayne Schneider, David W. Stroman, Nissanke L. Dassanayake
  • Publication number: 20110082145
    Abstract: The invention provides solution compositions comprising olopatadine and a PDE4 inhibitor compound of Formula I: The invention also provides methods for treating allergic and inflammatory diseases. More particularly, the present invention relates to formulations of olopatadine and their use for treating and/or preventing allergic or inflammatory disorders of the eye, nose, skin, and ear.
    Type: Application
    Filed: October 1, 2010
    Publication date: April 7, 2011
    Applicant: ALCON RESEARCH, LTD.
    Inventors: L. Wayne Schneider, Wesley Wehsin Han, Masood A. Chowhan
  • Publication number: 20110071116
    Abstract: The present invention relates to a formulation comprising a N-halogenated amino acid and a phase transfer agent. The present invention also describes a method for disinfecting and/or cleaning a contact lens comprising contacting a contact lens with a formulation comprising a N-halogenated amino acid salt for a time sufficient to disinfect and/or clean the lens.
    Type: Application
    Filed: November 24, 2010
    Publication date: March 24, 2011
    Applicant: ALCON RESEARCH, LTD.
    Inventors: L. Wayne Schneider, Wesley Wehsin Han, Masood A. Chowhan, David W. Stroman, W. Dennis Dean, Michael S. Gaines