Patents by Inventor L. Wayne Schneider

L. Wayne Schneider 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: 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: 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: 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: 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: 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: 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
  • 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
  • Publication number: 20090197838
    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: April 30, 2008
    Publication date: August 6, 2009
    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: 20080287395
    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: May 16, 2008
    Publication date: November 20, 2008
    Applicant: ALCON RESEARCH, LTD.
    Inventors: Malay Ghosh, Masood A. Chowhan, L. Wayne Schneider
  • Publication number: 20080275121
    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: April 30, 2008
    Publication date: November 6, 2008
    Applicant: ALCON RESEARCH, LTD.
    Inventors: Masood A. Chowhan, Wesley Wehsin Han, L. Wayne Schneider, David W. Stroman, Nissanke L. Dassanayake
  • Publication number: 20080093247
    Abstract: Packaging materials substantially lacking adsorptive and absorptive properties for 2-pyrrolidone derivatives are provided. The packaged products described herein provide for retention of the 2-pyrrolidone derivative within the formulation thereby maintaining the integrity of such formulations. Packaged products are useful for ophthalmic, otic, and nasal applications. Ophthalmic application includes therapeutic uses and contact lens care uses.
    Type: Application
    Filed: October 24, 2007
    Publication date: April 24, 2008
    Applicant: Alcon Manufacturing Ltd.
    Inventors: Wesley Wehsin Han, Masood A. Chowhan, Jang-Shing Chiou, L. Wayne Schneider, Bhagwati P. Kabra
  • Patent number: 6429227
    Abstract: HETE salts, the preparation of HETE salts, the preparation of stable and efficacious HETE compositions, HETE compositions and methods of use for treating dry eye are disclosed.
    Type: Grant
    Filed: October 23, 2000
    Date of Patent: August 6, 2002
    Assignee: Alcon Universal Ltd.
    Inventors: L. Wayne Schneider, Raymond E. Conrow, Daniel A. Gamache, Terri Pasquine, John M. Yanni, Haresh G. Bhagat
  • Patent number: 6353022
    Abstract: Compositions containing one or more HETE derivative(s) and an effective concentration of ethanol and methods of use for treating dry eye are disclosed.
    Type: Grant
    Filed: October 23, 2000
    Date of Patent: March 5, 2002
    Assignee: Alcon Universal Ltd.
    Inventors: L. Wayne Schneider, Daniel A. Gamache, Lori K. Weimer, Timothy L. Kessler, Zhongyou Wei, Terri Pasquine, John M. Yanni, Haresh G. Bhagat
  • Patent number: 6011062
    Abstract: The use of polyethoxylated castor oils in prostaglandin compositions enhances the prostaglandin's chemical stability.
    Type: Grant
    Filed: February 9, 1999
    Date of Patent: January 4, 2000
    Assignee: Alcon Laboratories, Inc.
    Inventors: L. Wayne Schneider, Rajan Bawa, Alan L. Weiner
  • Patent number: 5849792
    Abstract: The use of polyethoxylated castor oils in prostaglandin compositions greatly enhances the prostaglandin's chemical stability.
    Type: Grant
    Filed: October 29, 1996
    Date of Patent: December 15, 1998
    Assignee: Alcon Laboratories, Inc.
    Inventor: L. Wayne Schneider