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).

  • 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
  • Patent number: 7947295
    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: February 9, 2007
    Date of Patent: May 24, 2011
    Assignee: Alcon, Inc.
    Inventors: Masood A. Chowhan, Huagang Chen
  • 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
  • Patent number: 7914803
    Abstract: Ophthalmic compositions suitable for use as artificial tears or as vehicles for ophthalmic drugs are disclosed. The compositions contain a combination of three polymers that have a synergistic effect on viscosity.
    Type: Grant
    Filed: February 9, 2007
    Date of Patent: March 29, 2011
    Assignee: Alcon, Inc.
    Inventors: Masood A. Chowhan, Huagang Chen
  • 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
  • Publication number: 20110071091
    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: September 21, 2010
    Publication date: March 24, 2011
    Inventors: Masood A. Chowhan, Thomas C. Hohman, Ernesto J. Castillo, Wesley Wehsin Han
  • Publication number: 20110060044
    Abstract: The present invention relates to methods for treating an infected tissue comprising treating the infected tissue with a formulation comprising a N-halogenated amino acid and an aliphatic acid. This specification also discloses methods for improving the antimicrobial activity of a formulation comprising a N-halogenated amino acid, the method comprising adding an aliphatic acid to said formulation.
    Type: Application
    Filed: November 16, 2010
    Publication date: March 10, 2011
    Applicant: ALCON RESEARCH, LTD.
    Inventors: Masood A. Chowhan, Wesley Weshin Han, Wayne L. Schneider, David W. Stroman
  • Publication number: 20110003803
    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 2, 2010
    Publication date: January 6, 2011
    Applicant: ALCON RESEARCH, LTD.
    Inventors: David W. Stroman, Masood A. Chowhan, Kenneth C. Appell
  • Publication number: 20100266664
    Abstract: Disclosed are ophthalmic drug-delivery devices, comprising a body having a proximal end and a distal end, wherein the body includes a styrene elastomer matrix and a drug in contact with the matrix. Also disclosed are methods of treating or preventing an eye disease in a subject, that involve contacting an eye of the subject with an ophthalmic drug delivery device comprising a body having a proximal end and a distal end, wherein the body comprises a styrene elastomer matrix and a drug in contact with the matrix, wherein release of the drug from the device occurs over time following contacting of the device with the eye of the subject.
    Type: Application
    Filed: May 7, 2010
    Publication date: October 21, 2010
    Applicant: ALCON RESEARCH, LTD.
    Inventors: Bahram Asgharian, Masood A. Chowhan
  • Publication number: 20100210730
    Abstract: The present invention relates to a formulation having antimicrobial activity comprising a N-halogenated amino acid and a anti-inflammatory compound. This specification also describes methods for treating a tissue infection comprising contacting the infected tissue with a pharmaceutically effective amount of a formulation comprising a N-halogenated amino acid and a anti-inflammatory compound. This specification further describes a method for treating respiratory infections comprising contacting the site of the respiratory infection with a pharmaceutically effective amount of a formulation comprising a N-halogenated amino acid and a anti-inflammatory compound.
    Type: Application
    Filed: April 26, 2010
    Publication date: August 19, 2010
    Applicant: ALCON RESEARCH, LTD.
    Inventors: Masood A. Chowhan, Wesley Wehsin Han
  • Publication number: 20100204181
    Abstract: The present invention relates to methods for treating an infected tissue comprising treating the infected tissue with a formulation comprising a N-halogenated amino acid and a phosphine oxide or amine oxide. This specification also discloses methods for improving the antimicrobial activity of a formulation comprising a N-halogenated amino acid, the method comprising adding a phosphine oxide or amine oxide to said formulation.
    Type: Application
    Filed: February 5, 2010
    Publication date: August 12, 2010
    Applicant: ALCON RESEARCH, LTD.
    Inventors: David W. STROMAN, Masood A. CHOWHAN, Wayne L. SCHNEIDER, John Greg BARTELL, Wesley Wehsin HAN
  • Publication number: 20100160342
    Abstract: The present invention relates to development of efficacious pharmaceutical compositions comprising an active agent, such as the free base or hydrochloride salt of tandospirone, for topical delivery to the eye for the treatment of retinal disorders.
    Type: Application
    Filed: December 8, 2009
    Publication date: June 24, 2010
    Applicant: ALCON RESEARCH, LTD.
    Inventors: Masood A. Chowhan, Wesley Wehsin Han, L. Wayne Schneider
  • Patent number: 7709012
    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: June 8, 2004
    Date of Patent: May 4, 2010
    Assignee: Alcon, Inc.
    Inventors: Masood A. Chowhan, Huagang Chen
  • Publication number: 20100076045
    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: September 16, 2009
    Publication date: March 25, 2010
    Inventors: Ernesto J. Castillo, Bahram Asgharian, Masood A. Chowhan
  • Publication number: 20100056537
    Abstract: The present invention is directed to the provision of pharmaceutical compositions such as multi-dose, ophthalmic compositions. The compositions possess sufficient antimicrobial activity to satisfy preservative efficacy requirements in the United States and/or Europe. The compositions include sorbate or a non-polymeric diquaternary ammonium compound for enhancing preservation efficacy. Further, the compositions typically have relatively low ionic strengths to assist in maintaining such efficacy.
    Type: Application
    Filed: August 28, 2009
    Publication date: March 4, 2010
    Inventors: Malay Ghosh, Masood A. Chowhan
  • Publication number: 20100021562
    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: Application
    Filed: September 20, 2007
    Publication date: January 28, 2010
    Inventors: Masood A. Chowhan, David J. Keith
  • Publication number: 20100021561
    Abstract: The use of borate/amino alcohol/zinc systems 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: Application
    Filed: September 20, 2007
    Publication date: January 28, 2010
    Inventors: Masood A. Chowhan, David J. Keith, Bahram Asgharian
  • Publication number: 20090298956
    Abstract: The use of multifunctional synthetic compounds to both stabilize and preserve therapeutic emulsions is described. The multifunctional synthetic compounds have unique molecular arrangement wherein a phosphate group is linked to one, two or three quaternary ammonium functionalities via a substituted propenyl group, and each quaternary ammonium functionality is further linked to at least one hydrocarbon chain. The pharmaceutical emulsions which include these multifunctional compounds may be prepared without heating or homogenization, and may not require the use of any additional stabilizing or preserving agents.
    Type: Application
    Filed: May 27, 2009
    Publication date: December 3, 2009
    Inventors: Masood A. Chowhan, Malay Ghosh