Patents by Inventor Rong-Kun Chang

Rong-Kun Chang 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).

  • Patent number: 8394405
    Abstract: Disclosed are once-daily formulations containing tetracyclines, especially doxycycline. Such formulations are useful, for instance, for the treatment of collagenase destructive enzyme-dependent diseases, such as periodontal disease and acne, and acute and chronic inflammatory disease states, such as rosacea and arthritis.
    Type: Grant
    Filed: December 17, 2010
    Date of Patent: March 12, 2013
    Assignee: Supernus Pharmaceuticals, Inc.
    Inventors: Rong-Kun Chang, Arash Raoufinia, Niraj Shah
  • Patent number: 8206740
    Abstract: Disclosed are once-daily formulations containing tetracyclines, especially doxycycline. Such formulations are useful, for instance, for the treatment of collagenase destructive enzyme-dependent diseases, such as periodontal disease and acne, and acute and chronic inflammatory disease states, such as rosacea and arthritis.
    Type: Grant
    Filed: June 6, 2008
    Date of Patent: June 26, 2012
    Assignee: Supernus Pharmaceuticals, Inc.
    Inventors: Rong-Kun Chang, Arash Raoufinia, Niraj Shah
  • Publication number: 20110319368
    Abstract: Disclosed are once-daily formulations containing tetracyclines, especially doxycycline. Such formulations are useful, for instance, for the treatment of collagenase destructive enzyme-dependent diseases, such as periodontal disease and acne, and acute and chronic inflammatory disease states, such as rosacea and arthritis.
    Type: Application
    Filed: December 17, 2010
    Publication date: December 29, 2011
    Inventors: Rong-Kun Chang, Arash Raoufinia, Niraj Shah
  • Publication number: 20110294759
    Abstract: Disclosed are once-daily formulations containing tetracyclines, especially doxycycline. Such formulations are useful, for instance, for the treatment of collagenase destructive enzyme-dependent diseases, such as periodontal disease and acne, and acute and chronic inflammatory disease states, such as rosacea and arthritis.
    Type: Application
    Filed: December 17, 2010
    Publication date: December 1, 2011
    Inventors: Rong-Kun Chang, Arash Raoufinia, Niraj Shah
  • Publication number: 20110288056
    Abstract: Disclosed are once-daily formulations containing tetracyclines, especially doxycycline. Such formulations are useful, for instance, for the treatment of collagenase destructive enzyme-dependent diseases, such as periodontal disease and acne, and acute and chronic inflammatory disease states, such as rosacea and arthritis.
    Type: Application
    Filed: December 17, 2010
    Publication date: November 24, 2011
    Inventors: Rong-Kun Chang, Arash Raoufinia, Niraj Shah
  • Publication number: 20110244042
    Abstract: Formulations of molindone having superior stability and methods of administering same are provided. The formulations may be immediate, modified, or otherwise delayed release formulations of molindone.
    Type: Application
    Filed: March 30, 2011
    Publication date: October 6, 2011
    Inventors: Rong-Kun CHANG, Michael L. Vieira, Likan Liang, Padmanabh P. Bhatt, Austin B. Huang, Sachin V. Patel
  • Publication number: 20110212156
    Abstract: Disclosed are pharmaceutical compositions, particularly oral dosage forms, which comprise two or more enteric coating materials, either as a coating or as part of a matrix dosage form, and methods of making and using the same. The compositions are characterized by having a sustained release profile at lower pH and an accelerated dissolution profile at higher pH.
    Type: Application
    Filed: January 10, 2011
    Publication date: September 1, 2011
    Inventors: Rong-Kun Chang, Niraj Shah
  • Patent number: 7910128
    Abstract: Disclosed are pharmaceutical compositions, particularly oral dosage forms, which comprise two or more enteric coating materials, either as a coating or as part of a matrix dosage form, and methods of making and using the same. The compositions are characterized by having a sustained release profile at lower pH and an accelerated dissolution profile at higher pH.
    Type: Grant
    Filed: January 5, 2004
    Date of Patent: March 22, 2011
    Assignee: Supernus Pharmaceuticals, Inc.
    Inventors: Rong-Kun Chang, Niraj Shah
  • Patent number: 7749532
    Abstract: Disclosed are once-daily formulations containing tetracyclines, especially doxycycline. Such formulations are useful, for instance, for the treatment of collagenase destructive enzyme-dependent diseases, such as periodontal disease and acne, and acute and chronic inflammatory disease states, such as rosacea and arthritis.
    Type: Grant
    Filed: April 7, 2004
    Date of Patent: July 6, 2010
    Assignee: Supernus Pharmaceuticals, Inc.
    Inventors: Rong-Kun Chang, Arash Raoufinia, Niraj Shah
  • Publication number: 20090011006
    Abstract: Disclosed are once-daily formulations containing tetracyclines, especially doxycycline. Such formulations are useful, for instance, for the treatment of collagenase destructive enzyme-dependent diseases, such as periodontal disease and acne, and acute and chronic inflammatory disease states, such as rosacea and arthritis.
    Type: Application
    Filed: June 6, 2008
    Publication date: January 8, 2009
    Inventors: Rong-Kun Chang, Arash Raoufinia, Niraj Shah
  • Publication number: 20070249537
    Abstract: Disclosed are new compounds that increase the absorption of pharmaceutical agents across mucous membranes. These absorption enhancers allow higher bioavailability of administered drugs. The enhancers advantageously have low or no cytotoxicity.
    Type: Application
    Filed: April 27, 2007
    Publication date: October 25, 2007
    Inventors: Rong-Kun CHANG, Benjamin Kibalo, Richard Couch, Mark Ginski, Ali Keshavarz-Shokri, Caren Bancroft
  • Patent number: 7259153
    Abstract: The present invention is directed to pharmaceutical compositions containing crystalline methylated cyclodextrins, which enhance the solubility of the pharmaceutically active agent or agents of the formulation.
    Type: Grant
    Filed: February 2, 2004
    Date of Patent: August 21, 2007
    Assignee: Supernus Pharmaceuticals
    Inventor: Rong-Kun Chang
  • Publication number: 20060083690
    Abstract: The present invention is directed to pharmaceutical compositions of psychoactive drugs having a reduced potential for abuse and methods of reducing the potential for abuse of dosage forms of prescription psychoactive drugs.
    Type: Application
    Filed: October 14, 2005
    Publication date: April 20, 2006
    Inventor: Rong-Kun Chang
  • Publication number: 20050158384
    Abstract: A pharmaceutical composition comprises a once-a-day sustained release formulation of at least one amphetamine salt which provides mean plasma concentration profile aspects in human ADHD patients which are substantially the same as that provided by ADDERALL XR® type pulsatile formulations.
    Type: Application
    Filed: January 7, 2005
    Publication date: July 21, 2005
    Inventors: Richard Couch, Beth Burnside, Rong-Kun Chang
  • Patent number: 6913768
    Abstract: A pharmaceutical composition comprises a once-a-day sustained release formulation of at least one amphetamine salt which provides mean plasma concentration profile aspects in human ADHD patients which are substantially the same as that provided by ADDERALL XR® type pulsatile formulations.
    Type: Grant
    Filed: January 29, 2003
    Date of Patent: July 5, 2005
    Assignee: Shire Laboratories, Inc.
    Inventors: Richard A. Couch, Beth A. Burnside, Rong-Kun Chang
  • Patent number: 6890918
    Abstract: A pharmaceutical composition comprising an inhibitor of angiotensin converting enzyme and neutral endopeptidase, such as sampatrilat, and at least one bioavailability enhancer such as an organic acid, e.g., ascorbic acid. Such a composition has improved systemic bioavailability.
    Type: Grant
    Filed: April 30, 2002
    Date of Patent: May 10, 2005
    Assignee: Shire Laboratories, Inc.
    Inventors: Beth Burnside, Rong-Kun Chang, Amir Shojaei
  • Publication number: 20040228912
    Abstract: Disclosed are once-daily formulations containing tetracyclines, especially doxycycline. Such formulations are useful, for instance, for the treatment of collagenase destructive enzyme-dependent diseases, such as periodontal disease and acne, and acute and chronic inflammatory disease states, such as rosacea and arthritis.
    Type: Application
    Filed: April 7, 2004
    Publication date: November 18, 2004
    Inventors: Rong-Kun Chang, Arash Raoufinia, Niraj Shah
  • Publication number: 20040228802
    Abstract: Drug formulations having reduced abuse potential which contain one or more of (1) a bittering agent, (2) a bright deterrent/indicator dye and (3) fine insoluble particulate matter. The bittering agent and dye are in a form which does not affect proper administration of the drug, but the bittering agent creates a bitter side effect when the dosage form is crushed or chemically extracted and nasally, orally, buccally or sublingually administered and the dye produces a bright color when crushed and contacted. The fine insoluble particulate matter hinders extraction of the drug from the dosage form and, when crushed, can deter intravenous injection because of the presence of the insoluble particles or hinder injection by blocking an intravenous needle. The bright color of the dye, when extracted, also has a psychologically deterrent effect on intravenous abusers.
    Type: Application
    Filed: May 12, 2003
    Publication date: November 18, 2004
    Inventors: Rong-Kun Chang, Richard A. Couch, Beth A. Burnside
  • Patent number: RE41148
    Abstract: A multiple pulsed dose drug delivery system for pharmaceutically active amphetamine salts, comprising an immediate-release component and an enteric delayed-release component wherein (1) the enteric release coating has a defined minimum thickness and/or (2) there is a protective layer between the pharmaceutically active amphetamine salt and the enteric release coating and/or (3) there is a protective layer over the enteric release coating. The product can be composed of either one or a number of beads in a dosage form, including either capsule, tablet, or sachet method for administering the beads.
    Type: Grant
    Filed: October 20, 1999
    Date of Patent: February 23, 2010
    Assignee: Shire Laboratories, Inc.
    Inventors: Beth A. Burnside, Xiaodi Guo, Kimberly Fiske, Richard A. Couch, Donald J. Treacy, Rong-Kun Chang, Edward M. Rudnic, Charlotte M. McGuinness
  • Patent number: RE42096
    Abstract: A multiple pulsed dose drug delivery system for pharmaceutically active amphetamine salts, comprising an immediate-release component and an enteric delayed-release component wherein (1) the enteric release coating has a defined minimum thickness and/or (2) there is a protective layer between the pharmaceutically active amphetamine salt and the enteric release coating and/or (3) there is a protective layer over the enteric release coating. The product can be composed of either one of a number of beads in a dosage form, including either capsule, tablet, or sachet method for administering the beads.
    Type: Grant
    Filed: March 24, 2005
    Date of Patent: February 1, 2011
    Inventors: Beth A. Burnside, Xiaodi Guo, Kimberly Fiske, Richard A. Couch, Rong-Kun Chang, Donald J. Treacy, Charlotte M. McGuiness, Edward M. Rudnic