Patents by Inventor Steven K. MacLeod

Steven K. MacLeod 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: 9775802
    Abstract: A process for producing a pharmaceutical suspension that comprises an active pharmaceutical ingredient (“API”) having low solubility, the process comprises: (a) preparing a first solution comprising a carboxy-containing vinyl polymer and a solvent; and (b) adding a compound of the API to said first solution under conditions of high-shear mixing for a time from about 5 minutes to about 5 hours, said compound being soluble in said solvent, thereby producing a suspension of particles of said API in a composition comprising said carboxy-containing vinyl polymer; wherein a concentration of said API in said suspension is higher than a solubility of said API in said solvent. The present invention also provides a suspension produced by such process.
    Type: Grant
    Filed: October 21, 2014
    Date of Patent: October 3, 2017
    Assignee: Bausch & Lomb Incorporated
    Inventors: Steven K. MacLeod, Daniel J. Stein, James Donald Hayes, Donald L. Herber
  • Patent number: 9481856
    Abstract: A pharmaceutical formulation that is effective in adversely affecting the viability of microorganisms or in inhibiting their growth and that provides better safety and/or comfort to the users comprises a polysaccharide, a source of hydrogen peroxide, and an anti-oxidant. The formulation can further comprise a chelating agent and/or an ophthalmically active agent for treating or controlling a disease or disorder of the eye. The formulation may be used to treat, clean, disinfect, store, wet, or rewet contact lenses.
    Type: Grant
    Filed: May 19, 2009
    Date of Patent: November 1, 2016
    Assignee: Bausch & Lomb Incorporated
    Inventors: Erning Xia, Michael E. Allen, Steven K. MacLeod, Tammy J. Kleiber, Craig M. Cody
  • Publication number: 20150038439
    Abstract: A process for producing a pharmaceutical suspension that comprises an active pharmaceutical ingredient (“API”) having low solubility, the process comprises: (a) preparing a first solution comprising a carboxy-containing vinyl polymer and a solvent; and (b) adding a compound of the API to said first solution under conditions of high-shear mixing for a time from about 5 minutes to about 5 hours, said compound being soluble in said solvent, thereby producing a suspension of particles of said API in a composition comprising said carboxy-containing vinyl polymer; wherein a concentration of said API in said suspension is higher than a solubility of said API in said solvent. The present invention also provides a suspension produced by such process.
    Type: Application
    Filed: October 21, 2014
    Publication date: February 5, 2015
    Inventors: Steven K. MacLeod, Daniel J. Stein, James Donald Hayes, Donald L. Herber
  • Publication number: 20100247666
    Abstract: A process for producing a pharmaceutical suspension that comprises an active pharmaceutical ingredient (“API”) having low solubility, the process comprises: (a) preparing a first solution comprising a carboxy-containing vinyl polymer and a solvent; and (b) adding a compound of the API to said first solution under conditions of high-shear mixing for a time from about 5 minutes to about 5 hours, said compound being soluble in said solvent, thereby producing a suspension of particles of said API in a composition comprising said carboxy-containing vinyl polymer; wherein a concentration of said API in said suspension is higher than a solubility of said API in said solvent. The present invention also provides a suspension produced by such process.
    Type: Application
    Filed: March 1, 2010
    Publication date: September 30, 2010
    Inventors: Steven K. MacLeod, Daniel J. Stein, James Donald Hayes, Donald L. Herber
  • Publication number: 20090304811
    Abstract: A pharmaceutical formulation that is effective in adversely affecting the viability of microorganisms or in inhibiting their growth and that provides better safety and/or comfort to the users comprises a polysaccharide, a source of hydrogen peroxide, and an anti-oxidant. The formulation can further comprise a chelating agent and/or an ophthalmically active agent for treating or controlling a disease or disorder of the eye. The formulation may be used to treat, clean, disinfect, store, wet, or rewet contact lenses.
    Type: Application
    Filed: May 19, 2009
    Publication date: December 10, 2009
    Inventors: Erning Xia, Michael E. Allen, Steven K. MacLeod, Tammy J. Kleiber, Graig M. Cody
  • Publication number: 20090092575
    Abstract: The invention is directed to an ophthalmic composition comprising a disuccinate of formula I or a corresponding salt thereof; wherein R1 is selected from hydrogen, alkyl or —C(O)alkyl, the alkyl having one to twelve carbons and optionally one or more oxygen atoms, A is a methylene group or an oxyalkylene group, and n is from 2 to 8. The ophthalmic composition also includes a cationic antimicrobial component and a tonicity agent, wherein the tonicity agent provides for an osmolality of the composition from 200 mOs/kg to 420 mOsm/kg.
    Type: Application
    Filed: October 7, 2008
    Publication date: April 9, 2009
    Inventor: Steven K. MacLeod
  • Publication number: 20090036404
    Abstract: Ophthalmic composition including a carboxyl-modified fructan or a salt thereof. The ophthalmic composition can be used in an eye care product or a contact lens care product such as a contact lens packaging solution or contact lens disinfecting solution.
    Type: Application
    Filed: July 28, 2008
    Publication date: February 5, 2009
    Inventor: Steven K. MacLeod
  • Patent number: 7387623
    Abstract: An article of manufacture is provided comprising a vial having (a) a first chamber that is substantially filled with an injectable pharmaceutical formulation; (b) a second chamber that is substantially empty but for a gaseous medium; (c) a septum, impermeable to the gaseous medium, separating the first and second chambers; and (d) actuating means effective to bring the formulation and the gaseous medium into contact by breach of the septum such that the gaseous medium acts as an effective headspace for agitation of the formulation. The formulation comprises an aqueous medium, a drug in solid particulate form in a therapeutically effective amount suspended in the medium, and one or more wetting and/or suspending agents in an amount effective to provide controlled flocculation of the drug, at least one ingredient of the formulation being susceptible to oxidative degradation.
    Type: Grant
    Filed: August 20, 2003
    Date of Patent: June 17, 2008
    Assignee: Pfizer Inc.
    Inventor: Steven K. MacLeod
  • Publication number: 20040039366
    Abstract: An article of manufacture is provided comprising a vial having (a) a first chamber that is substantially filled with an injectable pharmaceutical formulation; (b) a second chamber that is substantially empty but for a gaseous medium; (c) a septum, impermeable to the gaseous medium, separating the first and second chambers; and (d) actuating means effective to bring the formulation and the gaseous medium into contact by breach of the septum such that the gaseous medium acts as an effective headspace for agitation of the formulation. The formulation comprises an aqueous medium, a drug in solid particulate form in a therapeutically effective amount suspended in the medium, and one or more wetting and/or suspending agents in an amount effective to provide controlled flocculation of the drug, at least one ingredient of the formulation being susceptible to oxidative degradation.
    Type: Application
    Filed: August 20, 2003
    Publication date: February 26, 2004
    Inventor: Steven K. MacLeod
  • Publication number: 20030114430
    Abstract: A parenterally deliverable composition is provided, comprising an aqueous medium having dispersed therein, in solid particulate form, a steroidal drug in a therapeutically effective amount. The aqueous medium comprises one or more wetting and/or suspending agents in an amount effective to provide controlled flocculation of the drug, at least one of the wetting and/or suspending agents being susceptible to oxidative degradation. The composition further comprises, as a component thereof or as an adjunct thereto, means for protecting the oxidative degradation susceptible agent from oxidative degradation.
    Type: Application
    Filed: August 21, 2002
    Publication date: June 19, 2003
    Inventors: Steven K. MacLeod, Lloyd E. Fox, Neal S. Adams, David J. Salvat