Patents by Inventor Jianbo Xie

Jianbo Xie 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).

  • Oral controlled release dosage form
    Publication number: 20040156896
    Abstract: A dosage form that provides a controlled release solid dosage form for the oral administration of a central nervous system stimulant, preferably methylphenidate hydrochloride.
    Type: Application
    Filed: December 2, 2003
    Publication date: August 12, 2004
    Inventors: Manesh Dixit, Chih-Ming Chen, Xiu Xiu Cheng, Jianbo Xie
  • Granule modulating hydrogel system
    Publication number: 20030099710
    Abstract: A naproxen once-a-day matrix tablet is described which is based on a compressed mixture of a controlled release component of said tablet that contains:
    Type: Application
    Filed: January 2, 2003
    Publication date: May 29, 2003
    Inventors: Chih-Ming Chen, Steve Jan, Jianbo Xie
  • Granule modulating hydrogel system
    Publication number: 20010001658
    Abstract: A naproxen once-a-day matrix tablet is described which is based on a compressed mixture of a controlled release component of said tablet that contains:
    Type: Application
    Filed: January 21, 2000
    Publication date: May 24, 2001
    Inventors: Chih-Ming Chen, Steve Jan, Jianbo Xie
  • Controlled release bupropion formulation
    Patent number: 6210716
    Abstract: A controlled release dosage form of bupropion hydrochloride which comprises: (a) a first pellet having a core of bupropion hydrochloride and hydroxypropyl methylcellulose at a weight ratio of 10:1 to 30:1 and a coating of a mixture of an acrylic resin which is soluble in acidic media and ethyl cellulose; (b) a second pellet having a core of bupropion hydrochloride and hydroxypropyl methylcellulose at a ratio of 10:1 to 30:1; an inner coating of a mixture of an acrylic resin which is soluble in acidic media and a water insoluble polymer and an outer coating which comprises an enteric coating polymer.
    Type: Grant
    Filed: February 26, 1999
    Date of Patent: April 3, 2001
    Assignee: Andrx Pharmaceuticals, Inc.
    Inventors: Chih-Ming Chen, Jianbo Xie, Steve Jan
  • Controlled release formulation for water insoluble drugs in which a passageway is formed in situ
    Patent number: 5736159
    Abstract: A controlled release pharmaceutical tablet is disclosed which is based on:(a) a compressed core which contains:(i) a medicament;(ii) at least 23% to 55% by weight, based on the total weight of the core, of a water soluble osmotic agent;(iii) a water soluble pharmaceutically acceptable polymeric binder;(iv) a water-swellable pharmaceutically acceptable polymer;(v) a conventional pharmaceutical excipient; and(b) a membrane coating around said core tablet which consists essentially of:(i) a modified water insoluble pharmaceutically acceptable polymer; and(ii) a pharmaceutically acceptable water soluble polymer.
    Type: Grant
    Filed: April 28, 1995
    Date of Patent: April 7, 1998
    Assignee: Andrx Pharmaceuticals, Inc.
    Inventors: Chih-Ming Chen, Der-Yang Lee, Jianbo Xie
  • Controlled release formulation having a preformed passageway
    Patent number: 5654005
    Abstract: A controlled release pharmaceutical tablet having at least one passageway, said tablet having:(a) a compressed core which comprises:(i) a medicament;(ii) an amount of a water soluble osmotic agent which is effective to cause the medicament to be delivered from said passageway in the presence of aqueous media;(iii) a water-swellable pharmaceutically acceptable polymer; and(b) a membrane coating around said core tablet which comprises a water insoluble pharmaceutically acceptable polymer.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: August 5, 1997
    Assignee: Andrx Pharmaceuticals, Inc.
    Inventors: Chih-Ming Chen, Der-Yang Lee, Jianbo Xie, Aurelio Rodriguez