Patents by Inventor Alfred Liang

Alfred Liang 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: 20120039962
    Abstract: Provided herein is a pharmaceutical composition comprising an antagonist, an agonist, a seal coat, and a sequestering polymer, wherein the antagonist, agonist, seal coat and at least one sequestering polymer are all components of a single unit, and wherein the seal coat forms a layer physically separating the antagonist from the agonist from one another. Methods for manufacturing such a pharmaceutical composition are also provided.
    Type: Application
    Filed: October 21, 2011
    Publication date: February 16, 2012
    Applicant: Alpharma Pharmaceuticals, LLC
    Inventors: Alfred Liang, Joseph Stauffer, James Jones
  • Publication number: 20100266645
    Abstract: Provided herein are formulations and methods for treating pain in human beings. Also provide are optimal ratios at which an opioid and an opioid antagonist may be combined for administration to humans such that the opioid activity is inhibited. These ratios may also be used to formulate compositions containing both an opioid and an opioid antagonist within a single pharmaceutical dosing unit.
    Type: Application
    Filed: December 16, 2008
    Publication date: October 21, 2010
    Inventors: Alfred Liang, Frank Matthews, Garth Boehm, Joseph Stauffer
  • Publication number: 20100152221
    Abstract: Provided herein is a pharmaceutical composition comprising an antagonist, an agonist, a seal coat, and a sequestering polymer, wherein the antagonist, agonist, seal coat and at least one sequestering polymer are all components of a single unit, and wherein the seal coat forms a layer physically separating the antagonist from the agonist from one another. Methods for manufacturing such a pharmaceutical composition are also provided. Methods for treating pain using such compositions is also demonstrated.
    Type: Application
    Filed: December 16, 2008
    Publication date: June 17, 2010
    Applicant: Alpharma Pharmaceuticals, LLC
    Inventors: Alfred Liang, Frank Matthews, Garth Boehm, Lijuan Tang, Frank Johnson, Joseph Stauffer
  • Publication number: 20100151014
    Abstract: Provided herein are pharmaceutical compositions comprising an antagonist, an agonist, a seal coat, and a sequestering polymer, wherein the antagonist, agonist, seal coat and at least one sequestering polymer are all components of a single unit, and wherein the seal coat forms a layer physically separating the antagonist from the agonist from one another. Methods for manufacturing such a pharmaceutical composition are also provided. Methods for treating pain using such compositions are also demonstrated.
    Type: Application
    Filed: December 16, 2008
    Publication date: June 17, 2010
    Applicant: Alpharma Pharmaceuticals, LLC
    Inventors: Alfred Liang, Frank Matthews, Garth Boehm, Lijuan Tang, Frank Johnson, Joseph Stauffer
  • Publication number: 20100143483
    Abstract: Provided herein is a pharmaceutical composition comprising an antagonist, an agonist, a seal coat, and a sequestering polymer, wherein the antagonist, agonist, seal coat and at least one sequestering polymer are all components of a single unit, and wherein the seal coat forms a layer physically separating the antagonist from the agonist from one another. Methods for manufacturing such a pharmaceutical composition are also provided.
    Type: Application
    Filed: February 22, 2010
    Publication date: June 10, 2010
    Applicant: ALPHARMA PHARMACEUTICALS, LLC.
    Inventors: Frank MATTHEWS, Garth Boehm, Lijuan Tang, Alfred Liang
  • Patent number: 7682634
    Abstract: Provided herein is a pharmaceutical composition comprising an antagonist, an agonist, a seal coat, and a sequestering polymer, wherein the antagonist, agonist, seal coat and at least one sequestering polymer are all components of a single unit, and wherein the seal coat forms a layer physically separating the antagonist from the agonist from one another. Methods for manufacturing such a pharmaceutical composition are also provided.
    Type: Grant
    Filed: March 6, 2009
    Date of Patent: March 23, 2010
    Assignee: Alpharma Pharmaceuticals, LLC
    Inventors: Frank Matthews, Garth Boehm, Lijuan Tang, Alfred Liang
  • Patent number: 7682633
    Abstract: Provided herein is a pharmaceutical composition comprising an antagonist, an agonist, a seal coat, and a sequestering polymer, wherein the antagonist, agonist, seal coat and at least one sequestering polymer are all components of a single unit, and wherein the seal coat forms a layer physically separating the antagonist from the agonist from one another. Methods for manufacturing such a pharmaceutical composition are also provided.
    Type: Grant
    Filed: March 6, 2009
    Date of Patent: March 23, 2010
    Assignee: Alpharma Pharmaceuticals, LLC
    Inventors: Frank Matthews, Garth Boehm, Lijuan Tang, Alfred Liang
  • Publication number: 20090196890
    Abstract: Provided herein is a pharmaceutical composition comprising an antagonist, an agonist, a seal coat, and a sequestering polymer, wherein the antagonist, agonist, seal coat and at least one sequestering polymer are all components of a single unit, and wherein the seal coat forms a layer physically separating the antagonist from the agonist from one another. Methods for manufacturing such a pharmaceutical composition are also provided. Methods for treating pain using such compositions is also demonstrated.
    Type: Application
    Filed: December 17, 2008
    Publication date: August 6, 2009
    Applicant: Alpharma Pharmaceuticals, LLC
    Inventors: Alfred Liang, Franklin Johnson, Xiaohong Qi
  • Publication number: 20090162451
    Abstract: Provided herein is a pharmaceutical composition comprising an antagonist, an agonist, a seal coat, and a sequestering polymer, wherein the antagonist, agonist, seal coat and at least one sequestering polymer are all components of a single unit, and wherein the seal coat forms a layer physically separating the antagonist from the agonist from one another. Methods for manufacturing such a pharmaceutical composition are also provided.
    Type: Application
    Filed: March 6, 2009
    Publication date: June 25, 2009
    Applicant: ALPHARMA PHARMACEUTICALS, LLC.
    Inventors: Frank Matthews, Garth Boehm, Lijuan Tang, Alfred Liang
  • Publication number: 20090162450
    Abstract: Provided herein is a pharmaceutical composition comprising an antagonist, an agonist, a seal coat, and a sequestering polymer, wherein the antagonist, agonist, seal coat and at least one sequestering polymer are all components of a single unit, and wherein the seal coat forms a layer physically separating the antagonist from the agonist from one another. Methods for manufacturing such a pharmaceutical composition are also provided.
    Type: Application
    Filed: March 6, 2009
    Publication date: June 25, 2009
    Applicant: ALPHARMA PHARMACEUTICALS, LLC.
    Inventors: Frank Matthews, Garth Boehm, Lijuan Tang, Alfred Liang
  • Publication number: 20090131466
    Abstract: Provided herein is a pharmaceutical composition comprising an antagonist, an agonist, a seal coat, and a sequestering polymer, wherein the antagonist, agonist, seal coat and at least one sequestering polymer are all components of a single unit, and wherein the seal coat forms a layer physically separating the antagonist from the agonist from one another. Methods for manufacturing such a pharmaceutical composition are also provided.
    Type: Application
    Filed: September 4, 2008
    Publication date: May 21, 2009
    Applicant: ALPHARMA, INC.
    Inventors: Alfred Liang, Joseph Stauffer, James Jones
  • Publication number: 20080233197
    Abstract: Provided herein is a pharmaceutical composition comprising an antagonist, an agonist, a seal coat, and a sequestering polymer, wherein the antagonist, agonist, seal coat and at least one sequestering polymer are all components of a single unit, and wherein the seal coat forms a layer physically separating the antagonist from the agonist from one another. Methods for manufacturing such a pharmaceutical composition are also provided.
    Type: Application
    Filed: June 19, 2007
    Publication date: September 25, 2008
    Inventors: Francis Joseph Matthews, Alfred Liang, Boehm Garth
  • Publication number: 20080233156
    Abstract: Provided herein is a method of treating a condition in a host that is responsive to an agonist, the method comprising administering to the host a multi-layer pharmaceutical composition comprising the agonist and an antagonist thereof, wherein the agonist and antagonist are not in direct contact with one another in the intact form of the composition.
    Type: Application
    Filed: October 10, 2007
    Publication date: September 25, 2008
    Inventors: Frank Matthews, Alfred Liang, Frank Johnson
  • Publication number: 20070298090
    Abstract: Dosage forms of a nicotine delivery system are disclosed in which a mucoadhesive film, made up of one or more non-microbial hydrocolloid(s) and an effective dose of nicotine, dissolves when applied intraorally to release the nicotine which is absorbed through the oramucosac and directly reaches systemic circulation. Methods for preparing various versions of the dosage forms are disclosed. Methods to assist smoking cessation or provide substitutes for smoking by administrating the dosage form are also provided.
    Type: Application
    Filed: September 7, 2007
    Publication date: December 27, 2007
    Applicant: LAVIPHARM LABORATORIES, INC.
    Inventors: Li-Lan CHEN, Alfred LIANG
  • Publication number: 20070087981
    Abstract: The products and methods of the present invention provide a means for increasing the solubility and bioavailability of active agents. More particularly the invention provides compositions containing active agents as water-soluble complexes with glycyrrhizin, and methods of preparing such complexes. The invention further provides methods for the preparation of highly water soluble complex dosage forms.
    Type: Application
    Filed: October 19, 2006
    Publication date: April 19, 2007
    Applicant: Lavipharm Laboratories, Inc.
    Inventors: Li-Lan Chen, Li Tao, Alfred Liang
  • Patent number: 7138135
    Abstract: Bioadhesive, closed-cell foam film, sustained release, delivery devices for administering an active agent or combination of active agents to a subject are provided. Methods for making such delivery devices and methods for using such delivery devices offering the controlled and sustained release of an active agent or combination of active agents to a subject, preferably a near zero-order release, are also provided.
    Type: Grant
    Filed: June 24, 2004
    Date of Patent: November 21, 2006
    Assignee: Lavipharm Laboratories Inc.
    Inventors: Li-Lan H. Chen, Li Tao, Alfred Liang, Xu Zheng
  • Patent number: 7125564
    Abstract: The products and methods of the present invention provide a means for increasing the solubility and bioavailability of active agents. More particularly the invention provides compositions containing active agents as water-soluble complexes with glycyrrhizin, and methods of preparing such complexes. The invention further provides methods for the preparation of highly water soluble complex dosage forms.
    Type: Grant
    Filed: February 8, 2002
    Date of Patent: October 24, 2006
    Assignee: Lavipharm Laboratories, Inc.
    Inventors: Li-Lan H. Chen, Li Tao, Alfred Liang
  • Publication number: 20050143460
    Abstract: The present invention provides oral pravastatin formulations comprising a physical mixture of pravastatin and at least one pharmaceutically-acceptable excipient, wherein the composition for at least 6 months after its preparation is stable and has a pH of greater than about 7 to less than 9, as well as methods for the preparation and use of these stable formulations.
    Type: Application
    Filed: May 7, 2004
    Publication date: June 30, 2005
    Applicant: ALPHARMA, INC.
    Inventor: Alfred Liang
  • Publication number: 20050020613
    Abstract: The invention combines two different subunits with different release profiles in novel sustained-release oral dosage forms. In particular, the oral dosage forms include a subunit that comprises an opioid analgesic and a sustained-release material, wherein the dissolution rate in-vitro of the subunit, when measured by the standard USP Drug Release test of U.S. Pharmacopeia XXVI (2003) <724>, is less than about 10% within about 6 hours and at least about 60% within about 24 hours; less than about 10% within about 8 hours and at least about 60% within about 24 hours; less than about 10% within about 10 hours and at least about 60% within about 24 hours; or less than about 10% within about 12 hours and at least about 60% within about 24 hours; the dosage form providing a duration of therapeutic effect of about 24 hours.
    Type: Application
    Filed: September 22, 2003
    Publication date: January 27, 2005
    Applicant: ALPHARMA, INC.
    Inventors: Garth Boehm, Alfred Liang
  • Publication number: 20040234578
    Abstract: Bioadhesive, closed-cell foam film, sustained release, delivery devices for administering an active agent or combination of active agents to a subject are provided. Methods for making such delivery devices and to methods for using such delivery devices offering the controlled and sustained release of an active agent or combination of active agents to a subject, preferably a near zero-order release, are also provided.
    Type: Application
    Filed: June 24, 2004
    Publication date: November 25, 2004
    Inventors: Li-Lan H. Chen, Li Tao, Alfred Liang, Xu Zheng