Patents by Inventor Sam W. Lam

Sam W. Lam 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: 20120283232
    Abstract: Process for making a sterile, injectable pharmaceutical composition by combining triamcinolone, a buffer and a high viscosity hyaluronate.
    Type: Application
    Filed: December 7, 2007
    Publication date: November 8, 2012
    Inventors: Zhengjun Wang, Thomas M. McGrath, Toan N. Ha, Sam W. Lam, Bruce A. Firestone, Robert T. Lyons, James N. Chang, John T. Trogden
  • Publication number: 20090149435
    Abstract: Process for making a sterile, injectable pharmaceutical composition by combining triamcinolone, a buffer and a high viscosity hyaluronate.
    Type: Application
    Filed: December 7, 2007
    Publication date: June 11, 2009
    Inventors: Zhengjun Wang, Thomas M. McGrath, Toan N. Ha, Sam W. Lam, Bruce A. Firestone, Robert T. Lyons, James N. Chang, John T. Trogden
  • Patent number: 5356555
    Abstract: A method for simultaneously cleaning and disinfecting contact lenses includes forming a disinfection solution containing an ophthalmically safe amount of a disinfecting agent, such as polyhexamethylene biguanide, and providing an effective amount of a proteolytic enzyme, such as subtilisin A. The disinfecting agent and proteolytic enzyme are selected such that in the working solution, the disinfection efficacy of the disinfecting agent is at least maintained. Preferably, after cleaning and disinfection, the lens can be rinsed with the disinfection solution, whereby the lens may then be directly inserted in the eye of the contact lens user without further rinsing.
    Type: Grant
    Filed: September 14, 1992
    Date of Patent: October 18, 1994
    Assignee: Allergan, Inc.
    Inventors: Stanley W. Huth, Sam W. Lam, Abraham M. Espiritu
  • Patent number: 5338480
    Abstract: Compositions and methods to clean contact lenses are disclosed. In one embodiment, the present composition comprises at least at least one enzyme capable of removing debris from a contact lens and at least one disinfectant destroying component capable of destroying a contact lens disinfectant which is incompatible with the at least one enzyme. The composition is structured so that the at least one enzyme is released in a liquid medium containing the contact lens disinfectant at substantially the same time or after the at least one disinfectant destroying component is released in the liquid medium, thereby allowing the at least one enzyme to remove debris from a contact lens in the liquid medium.
    Type: Grant
    Filed: March 4, 1991
    Date of Patent: August 16, 1994
    Assignee: Allegan, Inc.
    Inventors: Anthony J. Dziabo, Hampar Karageozian, Paul S. Ripley, Sam W. Lam, J. Abraham Espiritu
  • Patent number: 5324447
    Abstract: Methods for disinfecting a lens is disclosed. The methods comprise contacting a lens to be disinfected in a liquid medium with at least one chlorine dioxide precursor in the presence of at least one activator component selected from organic acid anhydrides, oxygen-releasing components and mixtures thereof to effect formation of chlorine dioxide from the chlorine dioxide precursor, thereby disinfecting the lens. Compositions useful in the above-noted methods are also disclosed.
    Type: Grant
    Filed: June 30, 1992
    Date of Patent: June 28, 1994
    Assignee: Allergan, Inc.
    Inventors: Sam W. Lam, Paul S. Ripley, J. Abraham M. Espiritu
  • Patent number: 5209783
    Abstract: A method for removing yellow contact lens discoloration involves immersing yellow colored contact lenses in a solution including a proteolytic enzyme and a reducing agent and then heating the solution for a time and at a temperature sufficient to remove substantially all yellow contact lens discoloration. The method also functions to simultaneously clean, disinfect and remove yellow discoloration from a contact lens. The lens is immersed in an aqueous solution including an effective amount of a thiol and an enzyme, and the solution is heated above ambient temperature for a time and at a temperature sufficient to remove substantially all yellow contact lens discoloration and contact lens protein accretions and to disinfect the lens. Preferably the solution is heated to a maximum temperature in a range of approximately 80.degree. C. to approximately 90.degree. C.
    Type: Grant
    Filed: January 3, 1992
    Date of Patent: May 11, 1993
    Assignee: Allergan, Inc.
    Inventors: Stanley W. Huth, Sam W. Lam, Abraham M. Espiritu
  • Patent number: 4670178
    Abstract: A one step method for cleaning and disinfecting contact lenses is accomplished by immersing the lenses in a solution containing peroxide and a peroxide-active enzyme.
    Type: Grant
    Filed: September 9, 1985
    Date of Patent: June 2, 1987
    Assignee: Allergan Pharmaceuticals, Inc.
    Inventors: Stanley W. Huth, Sam W. Lam, Richard M. Kiral
  • Patent number: RE32672
    Abstract: A one step method for cleaning and disinfecting contact lenses is accomplished by immersing the lenses in a solution containing peroxide and a peroxide-active enzyme.
    Type: Grant
    Filed: August 4, 1987
    Date of Patent: May 24, 1988
    Assignee: Allergan, Inc.
    Inventors: Stanley W. Huth, Sam W. Lam, Richard M. Kiral