Patents by Inventor Masood A. Chowhan

Masood A. 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).

  • Publication number: 20140128478
    Abstract: Disclosed is a pharmaceutical composition comprising a water insoluble polymer matrix that comprises a bioerodable polyester polymer or a fatty acid based polyester polymer, or a mixture of both polymers, wherein the polymer matrix has a melting point of less than 60° C., and wherein the composition is liquid or paste at room temperature and is formulated to occlude a punctual channel in a subject and conforms to the shape of the canalicular or punctal channel.
    Type: Application
    Filed: January 15, 2014
    Publication date: May 8, 2014
    Applicant: Alcon Research, Ltd.
    Inventors: Bahram Asgharian, Masood A. Chowhan
  • 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: 8632809
    Abstract: Disclosed is a pharmaceutical composition comprising (a) a bioerodible water insoluble polymer matrix comprising a polyester polymer, wherein the polymer matrix has a melting point of less than 60° C. and (b) an active agent dispersed within the polymer matrix, wherein the composition is formulated to controllably release the active agent for a pre -determined period of time to a target site. Also disclosed are methods of treating a disease or condition with the disclosed compositions.
    Type: Grant
    Filed: November 8, 2007
    Date of Patent: January 21, 2014
    Assignee: Alcon Research, Ltd.
    Inventors: Bahram Asgharian, Masood A. Chowhan, Martin B. Wax
  • Publication number: 20130331385
    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: August 15, 2013
    Publication date: December 12, 2013
    Applicant: Alcon Research, Ltd.
    Inventors: David W. Stroman, Masood A. Chowhan, Kenneth C. Appell
  • Patent number: 8536167
    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 2, 2010
    Date of Patent: September 17, 2013
    Assignee: Alcon Research, Ltd.
    Inventors: David W. Stroman, Masood A. Chowhan, Kenneth C. Appell
  • Patent number: 8431751
    Abstract: New polymeric quaternary ammonium compounds with vicinal hydroxyl groups are disclosed. These compounds are useful as disinfectants in contact lens care compositions and/or as preservatives in ophthalmic compositions. Compositions containing these compounds are also disclosed. These compositions are especially useful for disinfecting/cleaning contact lenses.
    Type: Grant
    Filed: December 22, 2009
    Date of Patent: April 30, 2013
    Assignee: Alcon Research, Ltd.
    Inventors: Ernesto J. Castillo, Hwang-Hsing Chen, Masood A. Chowhan, Glenn D. Stafford, Jr.
  • 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: 8388941
    Abstract: The use of a borate/polyol and zinc system to enhance the antimicrobial activity of multi-dose pharmaceutical compositions is described. The compositions do not require a conventional anti-microbial preservative and therefore are referred to as being ‘self-preserved’. The compositions possess sufficient antimicrobial activity to satisfy the preservative efficacy requirements of the USP for aqueous ophthalmic compositions.
    Type: Grant
    Filed: September 20, 2007
    Date of Patent: March 5, 2013
    Assignee: Alcon Research, Ltd.
    Inventors: Masood A. Chowhan, David J. Keith
  • 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: 8313754
    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: Grant
    Filed: April 11, 2011
    Date of Patent: November 20, 2012
    Assignee: Novartis AG
    Inventors: Masood A. Chowhan, Huagang Chen
  • Publication number: 20120270955
    Abstract: An ophthalmic composition is disclosed having a viscosity enhancement system comprised of two different viscosity enhancing agents. The aqueous composition contains a first viscosity enhancing agent that provides enhanced viscosity upon dispensing of the composition to the eye and a second viscosity agent that increases viscosity (e.g., gels or partially gels) after dispensing of the composition to the eye to provide extended viscosity enhancement of the composition.
    Type: Application
    Filed: April 19, 2012
    Publication date: October 25, 2012
    Inventors: Masood A. Chowhan, Malay Ghosh
  • Publication number: 20120269862
    Abstract: An ophthalmic composition is disclosed having a viscosity enhancement system comprised of two different viscosity enhancing agents. The aqueous composition contains a first viscosity enhancing agent that provides enhanced viscosity upon dispensing of the composition to the eye and a second viscosity agent that increases viscosity (e.g., gels or partially gels) after dispensing of the composition to the eye to provide extended viscosity enhancement of the composition.
    Type: Application
    Filed: April 19, 2012
    Publication date: October 25, 2012
    Inventors: Masood A. Chowhan, Malay Ghosh
  • 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: 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
  • Publication number: 20110190203
    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: April 11, 2011
    Publication date: August 4, 2011
    Applicant: Alcon, Inc.
    Inventors: Masood A. Chowhan, Huagang Chen