Patents by Inventor Joseph C. H. Chou

Joseph C. H. 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).

  • Omeprazole formulation
    Patent number: 6780435
    Abstract: A pharmaceutical composition of omeprazole for oral administration is described which consists essentially of: (a) a pellet comprising an inert core component, 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 pellet which comprises a layer of an enteric coating agent.
    Type: Grant
    Filed: October 23, 2002
    Date of Patent: August 24, 2004
    Assignee: Andrx Pharmaceuticals, Inc.
    Inventors: Chih-Ming Chen, Joseph C. H. Chou, Timothy Weng
  • Omeprazole formulation
    Publication number: 20030113376
    Abstract: A pharmaceutical composition of omeprazole for oral administration is described which consists essentially of:
    Type: Application
    Filed: October 23, 2002
    Publication date: June 19, 2003
    Inventors: Chih-Ming Chen, Joseph C.H. Chou, Timothy Weng
  • Once daily pharmaceutical tablet having a unitary core
    Patent number: 6485748
    Abstract: A controlled release tablet is disclosed which comprises: (a) a homogeneous compressed core which comprises: (i) a medicament which is very slightly soluble to practically insoluble in water at 25° C.; (ii) a water soluble osmotic compound (iii) one or more osmotic polymers; and (b) a membrane coating which completely covers said core tablet which comprises a mixture of a: (i) a water insoluble pharmaceutically acceptable polymer; and (ii) a pH dependent polymer such as an enteric coating polymer, the weight ratio of the pH dependent polymer to the water insoluble pharmaceutically acceptable polymer being 0.1:1 to 0.75:1.
    Type: Grant
    Filed: December 12, 1997
    Date of Patent: November 26, 2002
    Assignee: Andrx Pharmaceuticals, Inc.
    Inventors: Chih-Ming Chen, Joseph C. H. Chou
  • Omeprazole formulation
    Patent number: 6096340
    Abstract: A pharmaceutical composition of omeprazole for oral administration is described which consists essentially of:(a) a pellet comprising an inert core component, 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 pellet which comprises a layer of an enteric coating agent.
    Type: Grant
    Filed: November 14, 1997
    Date of Patent: August 1, 2000
    Assignee: Andrx Pharmaceuticals, Inc.
    Inventors: Chih-Ming Chen, Joseph C. H. Chou, Timothy Weng
  • Omeprazole formulation
    Patent number: 6077541
    Abstract: A pharmaceutical composition of omeprazole for oral administration is described which consists essentially of:(a) a pellet comprising an inert core component, 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 pellet which comprises a layer of an enteric coating agent.
    Type: Grant
    Filed: June 18, 1999
    Date of Patent: June 20, 2000
    Assignee: Andrx Pharmaceuticals, Inc.
    Inventors: Chih-Ming Chen, Joseph C. H. Chou, Timothy Weng
  • Once daily calcium channel blocker tablet having a delayed release core
    Patent number: 5922352
    Abstract: A controlled release dosage form which comprises:(a) a homogeneous compressed core which comprises a compressed granulation of:(i) particles of a calcium channel blocker compound coated with an enteric polymer that are dispersed onto a solid pharmaceutical filler; and(b) a continuous compressed outer layer around said homogeneous compressed core which comprises a compressed granulation of:(i) one or more pharmaceutically acceptable polymers which form a hydrogel in which calcium channel blocker compound is dispersed.
    Type: Grant
    Filed: January 31, 1997
    Date of Patent: July 13, 1999
    Assignee: ANDRX Pharmaceuticals, Inc.
    Inventors: Chih-Ming Chen, Joseph C.H. Chou
  • Once daily pharmaceutical tablet having a unitary core
    Patent number: 5837379
    Abstract: A controlled release nifedipine tablet which comprises:(a) a homogeneous compressed core which comprises:(i) a medicament;(ii) a water soluble osmotic compound(iii) one or more osmotic polymers; and(b) a membrane coating which completely covers said core tablet which comprises a mixture of:(i) a water insoluble pharmaceutically acceptable polymer; and(ii) an enteric polymer.
    Type: Grant
    Filed: January 31, 1997
    Date of Patent: November 17, 1998
    Assignee: Andrx Pharmaceuticals, Inc.
    Inventors: Chih-Ming Chen, Joseph C. H. Chou
  • Gepirone dosage form
    Patent number: 5478572
    Abstract: Gepirone compositions having extended release properties contain a gepirone salt, a cellulosic polymer matrix and suitable quantities of pharmaceutical excipients. Dosage forms based thereon require 18 to 24 hours for release of 90 to 95% of gepirone.
    Type: Grant
    Filed: September 6, 1994
    Date of Patent: December 26, 1995
    Assignee: Bristol-Myers Squibb Co.
    Inventors: Stephen T. David, Claude E. Gallian, Joseph C. H. Chou