Patents by Inventor Chi Leung Li

Chi Leung Li 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: 9144547
    Abstract: An oral dosage form comprising, (i) an erodable core, which core comprises a pharmaceutically active weak base or a pharmaceutically acceptable salt or solvate thereof; and (ii) an erodable coating surrounding said core, which coating comprises one or more openings extending substantially completely through said coating but not penetrating said core and communicating from the environment of use to said core; characterized in that release of the pharmaceutically active weak base or a pharmaceutically acceptable salt or solvate thereof from the dosage form occurs through the said opening(s) by the erosion of said erodable core and through erosion of said erodable coating under pre-determined pH conditions; a process for preparing such a dosage form and the use of such a dosage form in medicine.
    Type: Grant
    Filed: December 13, 2010
    Date of Patent: September 29, 2015
    Assignee: Glaxo Group Limited
    Inventors: Chi Leung Li, Luigi Martini, Vincenzo Re, Helen Anne Willy
  • Patent number: 8765065
    Abstract: The present invention relates to a process using ultrasonic cutting for the preparation of an oral delivery device comprising a core which includes a pharmaceutically active agent covered by an outer coating which includes one or more openings communicating from the exterior of the device toward the core.
    Type: Grant
    Filed: February 17, 2011
    Date of Patent: July 1, 2014
    Assignees: GlaxoSmithKline LLC, SmithKline Beecham Limited
    Inventors: Luigi Martini, Philip Smith, Chi Leung Li, Ronald Raby
  • Patent number: 8123509
    Abstract: An injection molding process for the preparation of an oral delivery device comprising a core which contains a pharmaceutically active agent, having a coating with one or more openings leading to such a core. The invention also relates to devices produced by the process, and to injection molds suitable for performing the process.
    Type: Grant
    Filed: November 30, 2009
    Date of Patent: February 28, 2012
    Assignee: SmithKline Beecham Limited
    Inventors: Allan J. Clarke, Robert Glinecke, Ronald Raby, Chi Leung Li, Luigi Martini
  • Publication number: 20110135695
    Abstract: An oral dosage form comprising, (i) an erodable core, which core comprises a pharmaceutically active weak base or a pharmaceutically acceptable salt or solvate thereof; and (ii) an erodable coating surrounding said core, which coating comprises one or more openings extending substantially completely through said coating but not penetrating said core and communicating from the environment of use to said core; characterised in that release of the pharmaceutically active weak base or a pharmaceutically acceptable salt or solvate thereof from the dosage form occurs through the said opening(s) by the erosion of said erodable core and through erosion of said erodable coating under pre-determined pH conditions; a process for preparing such a dosage form and the use of such a dosage form in medicine.
    Type: Application
    Filed: December 13, 2010
    Publication date: June 9, 2011
    Inventors: Chi Leung Li, Luigi Martini, Vincenzo Re, Helen Anne Willy
  • Publication number: 20110131754
    Abstract: The present invention relates to a process using ultrasonic cutting for the preparation of an oral delivery device comprising a core which includes a pharmaceutically active agent covered by an outer coating which includes one or more openings communicating from the exterior of the device toward the core.
    Type: Application
    Filed: February 17, 2011
    Publication date: June 9, 2011
    Inventors: Luigi MARTINI, Philip Smith, Chi Leung Li, Ronald Raby
  • Patent number: 7923027
    Abstract: The present invention relates to a process using ultrasonic cutting for the preparation of an oral delivery device comprising a core which includes a pharmaceutically active agent covered by an outer coating which includes one or more openings communicating from the exterior of the device toward the core.
    Type: Grant
    Filed: November 2, 2001
    Date of Patent: April 12, 2011
    Assignees: SmithKline Beecham Limited, GlaxoSmithKline LLC
    Inventors: Luigi Martini, Philip Smith, Chi Leung Li, Ronald Raby
  • Publication number: 20100221292
    Abstract: An injection moulding process for the preparation of an oral delivery device comprising a core which contains a pharmaceutically active agent, having a coating with one or more openings leading to such a core. The invention also relates to devices produced by the process, and to injection moulds suitable for performing the process.
    Type: Application
    Filed: November 30, 2009
    Publication date: September 2, 2010
    Inventors: Allan J. Clarke, Robert Glinecke, Ronald Raby, Chi Leung Li, Luigi Martini
  • Patent number: 7638081
    Abstract: An injection moulding process for the preparation of an oral delivery device comprising a core which contains a pharmaceutically active agent, having a coating with one or more openings leading to such a core. The invention also relates to devices produced by the process, and to injection moulds suitable for performing the process.
    Type: Grant
    Filed: August 20, 2002
    Date of Patent: December 29, 2009
    Assignee: SmithKline Beecham plc
    Inventors: Allan J. Clarke, Robert Glinecke, Ronald Raby, Chi Leung Li, Luigi Martini
  • Patent number: 7146479
    Abstract: Methods and/or systems and/or apparatus for improved memory management include different allocation and deallocation strategies for various sizes of objects needing memory allocation during runtime.
    Type: Grant
    Filed: July 18, 2002
    Date of Patent: December 5, 2006
    Assignee: City U Research Limited
    Inventors: Richard Chi Leung Li, Anthony Shi Sheung Fong
  • Publication number: 20040245675
    Abstract: An injection moulding process for the preparation of an oral delivery device comprising a core which contains a pharmaceutically active agent, having a coating with one or more openings leading to such a core. The invention also relates to devices produced by the process, and to injection moulds suitable for performing the process.
    Type: Application
    Filed: August 4, 2004
    Publication date: December 9, 2004
    Inventors: Allan J. Clarke, Robert Glinecke, Chi Leung Li, Luigi G Martini
  • Publication number: 20040062806
    Abstract: The present invention relates to a process using ultrasonic cutting for the preparation of an oral delivery device comprising a core which includes a pharmaceutically active agent covered by an outer coating which includes one or more openings communicating from the exterior of the device toward the core.
    Type: Application
    Filed: November 6, 2003
    Publication date: April 1, 2004
    Inventors: Luigi Martini, Philip Smith, Chi Leung Li
  • Publication number: 20030028739
    Abstract: Methods and/or systems and/or apparatus for improved memory management include different allocation and deallocation strategies for various sizes of objects needing memory allocation during runtime.
    Type: Application
    Filed: July 18, 2002
    Publication date: February 6, 2003
    Inventors: Richard Chi Leung Li, Anthony Shi Sheung Fong