Patents by Inventor Joseph Chou

Joseph Chou 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).

  • Pharmaceutical formulation for acid-labile compounds
    Patent number: 6602522
    Abstract: A pharmaceutical composition of omeprazole for oral administration is described which includes: (a) a tabletted core component containing a therapeutically effective amount of a acid-labile compound, e.g., substituted benzamidazole such as omeprazole, an optional surface active agent, a filler, a pharmaceutically acceptable alkaline agent, and a binder; and (b) a single layer of coating on said core which comprises a layer of an enteric coating agent.
    Type: Grant
    Filed: June 20, 2000
    Date of Patent: August 5, 2003
    Assignee: Andrx Pharmaceuticals L.L.C.
    Inventors: Chih-Ming Chen, Joseph Chou, Unchalee Kositprapa
  • Controlled release oral tablet having a unitary core
    Patent number: 6495162
    Abstract: A controlled release antihyperglycemic tablet that does not contain an expanding polymer and comprising a core containing the antihyperglycemic drug, a semipermeable membrane coating the core and at least one passageway in the membrane.
    Type: Grant
    Filed: November 1, 2001
    Date of Patent: December 17, 2002
    Assignee: Andrx Pharmaceuticals, Inc.
    Inventors: Xiu Xiu Cheng, Chih-Ming Chen, Steve Jan, Joseph Chou
  • Controlled release oral tablet having a unitary core
    Publication number: 20020064556
    Abstract: A controlled release antihyperglycemic tablet that does not contain an expanding polymer and comprising a core containing the antihyperglycemic drug, a semipermeable membrane coating the core and at least one passageway in the membrane.
    Type: Application
    Filed: November 1, 2001
    Publication date: May 30, 2002
    Inventors: Xiu Xiu Cheng, Chih-Ming Chen, Steve Jan, Joseph Chou
  • Controlled release metformin formulations
    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
  • Controlled release tablet having a unitary core
    Patent number: 6284275
    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: June 9, 2000
    Date of Patent: September 4, 2001
    Assignee: Andrx Pharmaceuticals, Inc.
    Inventors: Chih-Ming Chen, Xiu Xiu Cheng, Joseph Chou, Steve Jan
  • Once daily analgesic tablet
    Patent number: 6177102
    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: December 2, 1999
    Date of Patent: January 23, 2001
    Assignee: Andrx Pharmaceuticals, Inc.
    Inventors: Chih-Ming Chen, Joseph Chou, David Wong
  • Omeprazole formulation
    Patent number: 6174548
    Abstract: A pharmaceutical composition of omeprazole for oral administration is described which consists essentially of: (a) a tabletted core component containing a therapeutically effective amount of omeprazole, a surface active agent, a filler, a pharmaceutically acceptable alkaline agent and a binder; and (b) a single layer of coating on said core which comprises a layer of an enteric coating agent.
    Type: Grant
    Filed: August 28, 1998
    Date of Patent: January 16, 2001
    Assignee: Andrx Pharmaceuticals, Inc.
    Inventors: Chih-Ming Chen, Joseph Chou, Unchalee Kositprapa
  • Controlled release oral dosage form
    Patent number: 6156342
    Abstract: A controlled release dosage form for an analgesic that does not contain an expanding polymer and comprising a core containing the analgesic, preferably tramadol or it pharmaceutically acceptable deviates and a semipermeable membrane coating the core.
    Type: Grant
    Filed: May 26, 1998
    Date of Patent: December 5, 2000
    Assignee: Andex Pharmaceuticals, Inc.
    Inventors: Mongkol Sriwongjanya, Timothy Weng, Joseph Chou, Chih-Ming Chen
  • Once daily analgesic tablet
    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
  • Oral dosage form for the controlled release of a biguanide and sulfonylurea
    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
  • Controlled release oral tablet having a unitary core
    Patent number: 6099859
    Abstract: A controlled release antihyperglycemic tablet that does not contain an expanding polymer and comprising a core containing the antihyperglycemic drug, a semipermeable membrane coating the core and at least one passageway in the membrane.
    Type: Grant
    Filed: March 20, 1998
    Date of Patent: August 8, 2000
    Assignee: Andrx Pharmaceuticals, Inc.
    Inventors: Xiu Xiu Cheng, Chih-Ming Chen, Steve Jan, Joseph Chou
  • HMG co-reductase inhibitor
    Patent number: 5916595
    Abstract: A controlled release dosage formulation is described which is based on a combination of:(a) a compressed tablet core which contains an alkyl ester of a hydroxy substituted naphthalene derivative a pharmaceutically acceptable, water swellable polymer and an osmotic agent; and(b) an outer coating layer which completely covers the osmotic core and comprises a pH sensitive coating agent and a water insoluble polymer.
    Type: Grant
    Filed: December 12, 1997
    Date of Patent: June 29, 1999
    Assignee: Andrx Pharmaceutials, Inc.
    Inventors: Chih-Ming Chen, Joseph Chou, David Wong
  • Golf ball cleaner
    Patent number: D395480
    Type: Grant
    Filed: February 10, 1997
    Date of Patent: June 23, 1998
    Inventor: Joseph Chou
  • Spike cleaner
    Patent number: D407877
    Type: Grant
    Filed: February 3, 1997
    Date of Patent: April 6, 1999
    Inventor: Joseph Chou