Patents by Inventor Andrew Lam

Andrew 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: 20050238709
    Abstract: Methods and devices for maintaining a desired therapeutic drug effect over a prolonged therapy period are provided. In particular, oral dosage forms that release drug within the gastrointestinal tract at an ascending release rate over an extended time period are provided. The dosage forms may additionally comprise an immediate-release dose of drug.
    Type: Application
    Filed: August 12, 2003
    Publication date: October 27, 2005
    Inventors: Andrew Lam, Padmaja Shivanand, Atul Ayer, Zahedeh Hatamkhany, Suneel Gupta, Diane Guinta, Carol Christopher, Samuel Saks, Lawrence Hamel, Jeri Wright, Richard Weyers
  • Publication number: 20050163841
    Abstract: Disclosed are substances, compositions, dosage forms and methods relating to drugs including 3-aminopropyl-n-butyl-phosphinic acid; structural homologs thereof; 3-aminopropyl-n-butyl-phosphinic acid complexes; complexes that comprise structural homologs of 3-aminopropyl-n-butyl-phosphinic acid; pharmaceutically acceptable salts of 3-aminopropyl-n-butyl-phosphinic acid or structural homologs thereof; and mixtures of the above.
    Type: Application
    Filed: October 29, 2004
    Publication date: July 28, 2005
    Inventors: Patrick Wong, Dong Yan, Andrew Lam, Stephen Hwang, George Guittard
  • Publication number: 20050129765
    Abstract: This invention relates to novel formulations and methods for the controlled release delivery of topiramate; as well as to the use of these formulations and methods for treating disease.
    Type: Application
    Filed: November 12, 2004
    Publication date: June 16, 2005
    Inventors: Shaoling Li, Andrew Lam, Liang Dong
  • Publication number: 20050112190
    Abstract: The present invention is directed to a dosage form configured to provide the controlled release of an active agent formulation. A dosage form according to the present invention includes a reservoir containing an active agent formulation and an engine positioned at least partially within the reservoir. In order to reduce the possibility that the engine included in a dosage form of the present invention will separate from the reservoir either during or after fabrication of the dosage form of the present invention, the engine included in a dosage form according to the present invention is bonded to an inside surface of the reservoir. The present invention also includes methods for preparing a controlled release dosage form.
    Type: Application
    Filed: September 23, 2004
    Publication date: May 26, 2005
    Inventors: Lauren Wiser, Betty Yu, Kimberly Capell, Andrew Lam, Zahedeh Hatamkhany
  • Publication number: 20050079220
    Abstract: The present invention relates to osmotic engines and dosage forms providing the controlled release of a liquid active agent formulation. More specifically, the present invention is directed to osmotic engines, dosage forms and methods that preserve osmotic engine functionality and reduce void volume formation in osmotically driven dosage form providing the controlled release of liquid active agent formulations.
    Type: Application
    Filed: July 30, 2004
    Publication date: April 14, 2005
    Inventors: Betty Yu, Liang-Chang Dong, Andrew Lam, Crystal Pollock-Dove
  • Publication number: 20050025831
    Abstract: Methods and devices for maintaining a desired therapeutic drug effect over a prolonged therapy period are provided. In particular, oral dosage forms that release drug within the gastrointestinal tract at an ascending release rate over an extended time period are provided. The dosage forms may additionally comprise an immediate-release dose of drug.
    Type: Application
    Filed: August 12, 2003
    Publication date: February 3, 2005
    Inventors: Andrew Lam, Padmaja Shivanand, Atul Ayer, Zahedeh Hatamkhany, Suneel Gupta, Diane Guinta, Carol Christopher, Samuel Saks, Lawrence Hamel, Jeri Wright, Richard Weyers
  • Publication number: 20050025832
    Abstract: Methods and devices for maintaining a desired therapeutic drug effect over a prolonged therapy period are provided. In particular, oral dosage forms that release drug within the gastrointestinal tract at an ascending release rate over an extended time period are provided. The dosage forms may additionally comprise an immediate-release dose of drug.
    Type: Application
    Filed: August 12, 2003
    Publication date: February 3, 2005
    Inventors: Andrew Lam, Padmaja Shivanand, Atul Ayer, Zahedeh Hatamkhany, Suneel Gupta, Diane Guinta, Carol Christopher, Samuel Saks, Lawrence Hamel, Jeri Wright, Richard Weyers
  • Publication number: 20040115262
    Abstract: Dosage forms and devices for enhancing controlled delivery of lowly soluble active agents including topiramate by use of a drug core composition that increases the solubility of the pharmaceutical agent are described. The present invention provides a drug core composition for delivering high doses of lowly soluble topiramate in solid oral drug delivery systems that are convenient to swallow, for once-a-day administration. The drug core composition contains topiramate, a surfactant and a carrier in ratios for optimal solubility and delivery.
    Type: Application
    Filed: July 28, 2003
    Publication date: June 17, 2004
    Inventors: Frank Jao, David Edgren, Patrick S.L. Wong, Robert Skluzacek, Shu Li, Andrew Lam, Atul Ayer, Shaoling Li, Winnie To
  • Publication number: 20040091529
    Abstract: Dosage forms and devices for enhancing controlled delivery of pharmaceutical agents by use of a drug core composition that increases the solubility of the pharmaceutical agent are described. The present invention provides a means of delivering high doses of lowly soluble drug in oral drug delivery systems that are convenient to swallow, for once-a-day administration.
    Type: Application
    Filed: June 26, 2003
    Publication date: May 13, 2004
    Inventors: David Edgren, Patrick S.L. Wong, Frank Jao, Robert Skluzacek, Shu Li, Andrew Lam, Gurdish Bhatti, Shaoling Li, Atul Ayer, Winnie To
  • Publication number: 20040022748
    Abstract: The present invention discloses a method or process for enhancing skin lightening of one wash-off product relative to another wherein said method or process comprises using a composition which is less harsh (measured by zein solubility) relative to the other.
    Type: Application
    Filed: March 12, 2002
    Publication date: February 5, 2004
    Applicant: Unilever Home & Personal Care USA, Division of Conopco, Inc.
    Inventors: Kavssery Parameswaran Ananthapadmanabhan, Gail Beth Rattinger, William Becker, Yuet Tong, Andrew Lam, Rajendra M. Dave, Eng-Beng Lim
  • Patent number: 6534089
    Abstract: The invention disclosed pertains to a novel delivery system comprising an agent formulation and means for dispensing the agent formulation from the delivery system.
    Type: Grant
    Filed: June 23, 2000
    Date of Patent: March 18, 2003
    Assignee: Alza Corporation
    Inventors: Atul D. Ayer, Andrew Lam, Judy A. Magruder, Lawrence G. Hamel, Patrick S. L. Wong
  • Publication number: 20020114838
    Abstract: The invention disclosed pertains to a novel delivery system comprising an agent formulation and means for dispensing the agent formulation from the delivery system.
    Type: Application
    Filed: November 7, 2001
    Publication date: August 22, 2002
    Inventors: Atul D. Ayer, Andrew Lam, Judy A. Magruder, Lawrence G. Hamel, Patrick S. L. Wong
  • Patent number: 6399045
    Abstract: The present invention teaches liquid sunscreen compositions in which level of surfactant is higher than level at which the sunscreen component(s) are still soluble in the surfactant in which they are used; and which comprise minimal levels of cationic polymer. Combination of cationic polymer (especially preferred surfactants and at minimum levels) and minimal levels of sunscreen lead to compositions with minimal levels of deposition and minimal SPF. Further, the compositions also maintain good lather.
    Type: Grant
    Filed: March 10, 2000
    Date of Patent: June 4, 2002
    Assignee: Unilever Home & Personal Care USA a division of Conopco, Inc.
    Inventors: Leslie Jo Morgan, Sudhakar Puvvada, Liang Sheng Tsaur, Michael Paul Aronson, Andrew Lam, Shiji Shen, Ernest Weatherley Macaulay
  • Patent number: 6224852
    Abstract: The present invention teaches liquid sunscreen compositions in which level of surfactant is higher than level at which the sunscreen component(s) are still soluble in the surfactant in which they are used; and which comprise minimal levels of cationic polymer. Combination of cationic polymer (especially preferred surfactants and at minimum levels) and minimal levels of sunscreen lead to compositions with minimal levels of deposition and minimal SPF. Further, the compositions also maintain good lather.
    Type: Grant
    Filed: April 23, 1999
    Date of Patent: May 1, 2001
    Assignee: Unilever Home & Personal Care USA
    Inventors: Leslie Jo Morgan, Sudhakar Puvvada, Liang Sheng Tsaur, Michael Paul Aronson, Andrew Lam, Shiji Shen, Ernest Weatherly Macauley
  • Patent number: 6096339
    Abstract: The invention disclosed pertains to a dosage form comprising an agent formulation comprising drug and pharmaceutical carrier of cooperating particle size and means for dispensing the agent formulation from the dosage form.
    Type: Grant
    Filed: April 4, 1997
    Date of Patent: August 1, 2000
    Assignee: ALZA Corporation
    Inventors: Atul D. Ayer, Andrew Lam, Judy A. Magruder, Lawrence G. Hamel, Patrick S. L. Wong