Patents Assigned to Andrx Corporation
  • Patent number: 7713550
    Abstract: Disclosed is a controlled release formulation comprising valproic acid, pharmaceutically acceptable salt thereof, amide thereof, or derivative thereof.
    Type: Grant
    Filed: June 15, 2004
    Date of Patent: May 11, 2010
    Assignee: Andrx Corporation
    Inventors: Nilobon Podhipleux, Xiu Xiu Cheng, Unchalee Lodin, Chih-Ming Chen, Avinash Nangia, Dacheng Tian
  • Publication number: 20070184078
    Abstract: In certain embodiments, the invention is directed to a package for dispensing a combination of a proton pump inhibitor and a non-steroidal anti-inflammatory drug.
    Type: Application
    Filed: January 16, 2007
    Publication date: August 9, 2007
    Applicant: Andrx Corporation
    Inventor: Chih-Ming Chen
  • Publication number: 20070160671
    Abstract: In certain embodiments, the invention is directed to a pharmaceutical dosage form consisting essentially of a single phase matrix comprising metformin or a pharmaceutically acceptable salt thereof and at least one controlled release excipient; said dosage form providing a mean Tmax of metformin from about 3 to about 12 hours after administration to human patients.
    Type: Application
    Filed: March 16, 2007
    Publication date: July 12, 2007
    Applicant: Andrx Corporation
    Inventors: Xiu-Xiu Cheng, Chih-Ming Chen, Steve Jan, Dacheng Tian
  • Patent number: 7022342
    Abstract: A sustained release beta-adrenergic receptor blocking agent, preferably propranolol, formulation.
    Type: Grant
    Filed: March 28, 2002
    Date of Patent: April 4, 2006
    Assignee: Andrx Corporation, Inc.
    Inventors: Chih-Ming Chen, Xiu Xiu Cheng
  • Publication number: 20060008526
    Abstract: A composition for treating patients having non-insulin-dependent diabetes mellitus (NIDDM) by administering a controlled release oral solid dosage form containing preferably a biguanide drug such as metformin, on a once-a-day basis. The dosage form provides a mean time to maximum plasma concentration (Tmax) of the drug which occurs at 5.5 to 7.5 hours after oral administration on a once-a-day basis to human patients. Preferably, the dose of drug is administered at dinnertime to a patient in the fed state.
    Type: Application
    Filed: September 13, 2005
    Publication date: January 12, 2006
    Applicant: Andrx Corporation
    Inventors: Chih-Ming Chen, Xiu-Xiu Cheng, Steve Jan, Joseph Chou
  • Publication number: 20060008525
    Abstract: A composition for treating patients having non-insulin-dependent diabetes mellitus (NIDM) by administering a controlled release oral solid dosage form containing preferably a biguanide drug such as metformin, on a once-a-day basis. The dosage form provides a mean time to maximum plasma concentration (Tmax) of the drug which occurs at 5.5 to 7.5 hours after oral administration on a once-a-day basis to human patients. Preferably, the dose of drug is administered at dinnertime to a patient in the fed state.
    Type: Application
    Filed: September 13, 2005
    Publication date: January 12, 2006
    Applicant: Andrx Corporation
    Inventors: Chih-Ming Chen, Xiu-Xiu Cheng, Steve Jan, Joseph Chou
  • Publication number: 20060008523
    Abstract: A composition for treating patients having non-insulin-dependent diabetes mellitus (NIDDM) by administering a controlled release oral solid dosage form containing preferably a biguanide drug such as metformin, on a once-a-day basis. The dosage form provides a mean time to maximum plasma concentration (Tmax) of the drug which occurs at 5.5 to 7.5 hours after oral administration on a once-a-day basis to human patients. Preferably, the dose of drug is administered at dinnertime to a patient in the fed state.
    Type: Application
    Filed: September 13, 2005
    Publication date: January 12, 2006
    Applicant: Andrx Corporation
    Inventors: Chih-Ming Chen, Xiu-Xiu Cheng, Steve Jan, Joseph Chou
  • Publication number: 20060008524
    Abstract: A composition for treating patients having non-insulin-dependent diabetes mellitus (NIDDM) by administering a controlled release oral solid dosage form containing preferably a biguanide drug such as metformin, on a once-a-day basis. The dosage form provides a mean time to maximum plasma concentration (Tmax) of the drug which occurs at 5.5 to 7.5 hours after oral administration on a once-a-day basis to human patients. Preferably, the dose of drug is administered at dinnertime to a patient in the fed state.
    Type: Application
    Filed: September 13, 2005
    Publication date: January 12, 2006
    Applicant: Andrx Corporation
    Inventors: Chih-Ming Chen, Xiu-Xiu Cheng, Steve Jan, Joseph Chou
  • Publication number: 20050027011
    Abstract: A process for preparing amorphous paroxetine hydrochloride or sertraline hydrochloride is provided, which comprises preparing a solution in which paroxetine hydrochloride or sertraline hydrochloride and a water-soluble polymer are dissolved in a co-solvent of a volatile organic solvent and water. Said solution is dried to obtain a composition comprising amorphous paroxetine hydrochloride or sertraline hydrochloride and the water-soluble matrix.
    Type: Application
    Filed: December 23, 2003
    Publication date: February 3, 2005
    Applicant: Andrx Corporation
    Inventors: Chih-Ming Chen, Boyong Li, Janice Cacace
  • Patent number: 6720003
    Abstract: A process for preparing amorphous paroxetine hydrochloride or sertraline hydrochloride is provided, which comprises preparing a solution in which paroxetine hydrochloride or sertraline hydrochloride and a water-soluble polymer are dissolved in a co-solvent of a volatile organic solvent and water. Said solution is dried to obtain a composition comprising amorphous paroxetine hydrochloride or sertraline hydrochloride and the water-soluble matrix.
    Type: Grant
    Filed: February 16, 2001
    Date of Patent: April 13, 2004
    Assignee: Andrx Corporation
    Inventors: Chih-Ming Chen, Boyong Li, Janice Cacace
  • Patent number: 6683112
    Abstract: The present invention relates to novel prodrugs of gabapentin and to pharmaceutical formulations and sustained release formulations containing the prodrugs.
    Type: Grant
    Filed: October 23, 2001
    Date of Patent: January 27, 2004
    Assignee: Andrx Corporation
    Inventors: Chih-Ming Chen, Jane Chen
  • Patent number: 6610326
    Abstract: A process for preparing divalproex sodium tablets is provided. The process comprises preparing a neutralized divalproex sodium solution by combining divalproex sodium, having a sodium valproate and a valproic acid moiety, with an aqueous solvent and a base, e.g., sodium hydroxide, the base being in sufficient amount to ensure neutralization of the valproic acid moiety of the divalproex sodium. The neutralized divalproex sodium solution is sprayed onto a pharmaceutically acceptable carrier, and processed to obtain divalproex sodium tablets.
    Type: Grant
    Filed: February 16, 2001
    Date of Patent: August 26, 2003
    Assignee: Andrx Corporation
    Inventors: Chih-Ming Chen, Boyong Li
  • Patent number: 6544556
    Abstract: An oral solid dosage form includes a therapeutically effective amount of an NSAID and a proton pump inhibitor in an amount effective to inhibit or prevent gastrointestinal side effects normally associated with the NSAID. Also disclosed is a method of treating a human patient in need of antiinflammatory, analgesic and/or antipyretic therapy, comprising orally administering to the patient an oral pharmaceutical dosage form which includes a therapeutically effective amount of an NSAID and an amount of a proton pump inhibitor effective to substantially inhibit gastrointestinal side effects of the NSAID. The invention is further related to a method of prophylactically treating a human patient who is on a therapy known to have significant gastrointestinal side effects or is about to begin such a therapy, via concurrent administration of an NSAID and a proton pump inhibitor in a combination (single) oral dosage form.
    Type: Grant
    Filed: September 11, 2000
    Date of Patent: April 8, 2003
    Assignee: Andrx Corporation
    Inventors: Chih-Ming Chen, Unchalee Kositprapa
  • Publication number: 20020156066
    Abstract: A process for preparing amorphous paroxetine hydrochloride or sertraline hydrochloride is provided, which comprises preparing a solution in which paroxetine hydrochloride or sertraline hydrochloride and a water-soluble polymer are dissolved in a co-solvent of a volatile organic solvent and water. Said solution is dried to obtain a composition comprising amorphous paroxetine hydrochloride or sertraline hydrochloride and the water-soluble matrix.
    Type: Application
    Filed: February 16, 2001
    Publication date: October 24, 2002
    Applicant: Andrx Corporation
    Inventors: Chih-Ming Chen, Boyong Li, Janice Cacace
  • Publication number: 20020115718
    Abstract: A process for preparing divalproex sodium tablets is provided. The process comprises preparing a neutralized divalproex sodium solution by combining divalproex sodium, having a sodium valproate and a valproic acid moiety, with an aqueous solvent and a base, e.g., sodium hydroxide, the base being in sufficient amount to ensure neutralization of the valproic acid moiety of the divalproex sodium. The neutralized divalproex sodium solution is sprayed onto a pharmaceutically acceptable carrier, and processed to obtain divalproex sodium tablets.
    Type: Application
    Filed: February 16, 2001
    Publication date: August 22, 2002
    Applicant: Andrx Corporation
    Inventors: Chih-Ming Chen, Boyong Li
  • Publication number: 20010024659
    Abstract: Sustained release pharmaceutical formulations comprising an antihyperglycemic drug or a pharmaceutically acceptable salt thereof are disclosed. The formulations provide therapeutic plasma levels of the antihyperglycemic drug to a human patient over a 24 hour period after administration.
    Type: Application
    Filed: November 29, 2000
    Publication date: September 27, 2001
    Applicant: Andrx Corporation
    Inventors: Chih-Ming Chen, Xiu Xiu Cheng, Steve Jan, Joseph Chou
  • Patent number: 6106862
    Abstract: An analgesic controlled release dosage form containing: (a) 40-80 weight percent of an analgesic; (b) 10-30 weight percent of a pharmaceutically acceptable filler; and (c) 10-30 weight percent of a carrier base wherein the carrier base is formed from a high molecular weight hydroxypropyl methylcellulose, a water soluble binder and optionally a water insoluble binder.
    Type: Grant
    Filed: August 13, 1998
    Date of Patent: August 22, 2000
    Assignee: ANDRX Corporation
    Inventors: Chih-Ming Chen, Joseph Chou, David Wong
  • Patent number: 6099862
    Abstract: A controlled release pharmaceutical tablet containing antihyperglycemic drug and a hypoglycemic drug that does not contain an expanding or gelling polymer layer and comprising a core containing the antihyperglycemic drug and the hypoglycemic drug, a semipermeable coating membrane surrounding the core and at least one passageway in the membrane to allow the drugs to be released from the core.
    Type: Grant
    Filed: August 31, 1998
    Date of Patent: August 8, 2000
    Assignee: ANDRX Corporation
    Inventors: Chih-Ming Chen, Xiu Xiu Cheng, Joseph Chou, Steve Jan