Patents by Inventor Kwen-Jen Chang

Kwen-Jen 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: 10071093
    Abstract: Compositions and methods for treatment of Parkinson's disease to reduce the negative side effects of the disease by administering a therapeutically effective diarylmethylpiperazine compound which exhibits delta opioid receptor agonist activity, and optionally, mu receptor antagonist activity.
    Type: Grant
    Filed: June 27, 2017
    Date of Patent: September 11, 2018
    Assignee: VERSI GROUP, LLC
    Inventors: Kwen-Jen Chang, William Pendergast, Jonathon D. S. Holt
  • Publication number: 20170290823
    Abstract: Compositions and methods for treatment of Parkinson's disease to reduce the negative side effects of the disease by administering a therapeutically effective diarylmethylpiperazine compound which exhibits delta opioid receptor agonist activity, and optionally, mu receptor antagonist activity.
    Type: Application
    Filed: June 27, 2017
    Publication date: October 12, 2017
    Inventors: KWEN-JEN CHANG, WILLIAM PENDERGAST, JONATHON D.S. HOLT
  • Patent number: 9701645
    Abstract: Compositions and methods for treatment of Parkinson's disease to reduce the negative side effects of the disease by administering a therapeutically effective diarylmethylpiperazine compound which exhibits delta opioid receptor agonist activity, and optionally, mu receptor antagonist activity.
    Type: Grant
    Filed: February 3, 2014
    Date of Patent: July 11, 2017
    Assignee: VERSI GROUP, LLC
    Inventors: Kwen-Jen Chang, William Pendergast, Jonathon D. S. Holt
  • Publication number: 20160200689
    Abstract: Compositions and methods for treatment of sexual dysfunctions by administering to a subject a pharmaceutical composition comprising a delta opioid receptor agonist in an amount effective to delay the onset of ejaculation in the subject during sexual stimulation.
    Type: Application
    Filed: March 23, 2016
    Publication date: July 14, 2016
    Inventors: KWEN-JEN CHANG, KLIM KING, KESTUTIS P. BICIUNAS, ROBERT W. MCNUTT, WILLIAM PENDERGAST, SHYI-TAI JAN
  • Patent number: 9296707
    Abstract: Compositions and methods for treatment of sexual dysfunctions by administering to a subject a pharmaceutical composition comprising a delta opioid receptor agonist in an amount effective to delay the onset of ejaculation in the subject during sexual stimulation.
    Type: Grant
    Filed: October 1, 2014
    Date of Patent: March 29, 2016
    Assignee: VERSI GROUP, LLC
    Inventors: Kwen-Jen Chang, Klim King, Kestutis P. Biciunas, Robert W. McNutt, William Pendergast, Shyi-Tai Jan
  • Publication number: 20150018372
    Abstract: Compositions and methods for treatment of sexual dysfunctions by administering to a subject a pharmaceutical composition comprising a delta opioid receptor agonist in an amount effective to delay the onset of ejaculation in the subject during sexual stimulation.
    Type: Application
    Filed: October 1, 2014
    Publication date: January 15, 2015
    Inventors: KWEN-JEN CHANG, KLIM KING, KESTUTIS P. BICIUNAS, ROBERT W. MCNUTT, WILLIAM PENDERGAST, SHYI-TAI JAN
  • Publication number: 20140315922
    Abstract: Compositions and methods for treatment of Parkinson's disease to reduce the negative side effects of the disease by administering a therapeutically effective diarylmethylpiperazine compound which exhibits delta opioid receptor agonist activity, and optionally, mu receptor antagonist activity.
    Type: Application
    Filed: February 3, 2014
    Publication date: October 23, 2014
    Applicant: VERSI GROUP, LLC
    Inventors: KWEN-JEN CHANG, WILLIAM PENDERGAST, JONATHON D.S. HOLT
  • Patent number: 8865721
    Abstract: Compositions and methods for treatment of sexual dysfunctions by administering to a subject a pharmaceutical composition comprising a delta opioid receptor agonist in an amount effective to delay the onset of ejaculation in the subject during sexual stimulation.
    Type: Grant
    Filed: October 1, 2013
    Date of Patent: October 21, 2014
    Assignee: Versi Group, LLC
    Inventors: Kwen-Jen Chang, Klim King, Kestutis P. Biciunas, Robert W. McNutt, William Pendergast, Shyi-Tan Jan
  • Patent number: 8642599
    Abstract: Compositions and methods for treatment of Parkinson's disease to reduce the negative side effects of the disease by administering a therapeutically effective diarylmethylpiperazine compound which exhibits delta opioid receptor agonist activity, and optionally, mu receptor antagonist activity.
    Type: Grant
    Filed: September 5, 2006
    Date of Patent: February 4, 2014
    Assignee: Versi Group, LLC
    Inventors: Kwen-Jen Chang, William Pendergast, Jonathon D. S. Holt
  • Publication number: 20140031367
    Abstract: Compositions and methods for treatment of sexual dysfunctions by administering to a subject a pharmaceutical composition comprising a delta opioid receptor agonist in an amount effective to delay the onset of ejaculation in the subject during sexual stimulation.
    Type: Application
    Filed: October 1, 2013
    Publication date: January 30, 2014
    Applicant: VERSI GROUP, LLC
    Inventors: KWEN-JEN CHANG, KLIM KING, KESTUTIS P. BICIUNAS, ROBERT W. MCNUTT, WILLIAM PENDERGAST, SHY-TAI JAN
  • Patent number: 8575169
    Abstract: Compositions and methods for treatment of sexual dysfunctions by administering to a subject a pharmaceutical composition comprising a delta opioid receptor agonist in an amount effective to delay the onset of ejaculation in the subject during sexual stimulation.
    Type: Grant
    Filed: January 2, 2003
    Date of Patent: November 5, 2013
    Assignee: Versi Group, LLC
    Inventors: Kwen-Jen Chang, Klim King, Kestutis P. Biciunas, Robert W. McNutt, Jr., William Pendergast, Shyi-Tai Jan
  • Patent number: 8551998
    Abstract: Compositions and methods for treatment of sexual dysfunctions by administering to a subject a pharmaceutical composition comprising a delta opioid receptor agonist in an amount effective to delay the onset of ejaculation in the subject during sexual stimulation.
    Type: Grant
    Filed: April 5, 2012
    Date of Patent: October 8, 2013
    Assignee: Versi Group, LLC
    Inventors: Kwen-Jen Chang, Klim King, Kestutis P. Biciunas, Robert W. McNutt, Jr., William Pendergast, Shy-Tai Jan
  • Patent number: 8476280
    Abstract: Compositions and methods for treatment of a urinary tract dysfunction by administering to a subject in need of such treatment a pharmaceutical composition including a delta opioid receptor agonist in an amount effective to reduce the effects of the urinary tract dysfunction. The compositions may further include an additional active agent that is used to treat urinary tract dysfunctions, e.g., alpha-adrenergic agonists, anticholinergics, alpha-adrenergic antagonists and tricyclic antidepressants.
    Type: Grant
    Filed: May 8, 2003
    Date of Patent: July 2, 2013
    Assignee: Versi Group, LLC
    Inventors: Kwen-Jen Chang, Peter J. Gengo, Kestutis P. Biciunas, Xin Ma, William Pendergast, Shyi-Tai Jan
  • Publication number: 20130053326
    Abstract: Compositions and methods for treatment of sexual dysfunctions by administering to a subject a pharmaceutical composition comprising a delta opioid receptor agonist in an amount effective to delay the onset of ejaculation in the subject during sexual stimulation.
    Type: Application
    Filed: January 2, 2003
    Publication date: February 28, 2013
    Inventors: Kwen-Jen Chang, Klim King, Kestutis P. Biciunas, Robert W. McNutt, JR., William Pendergast, Shyi-Tai Jan
  • Publication number: 20120220601
    Abstract: Compositions and methods for treatment of sexual dysfunctions by administering to a subject a pharmaceutical composition comprising a delta opioid receptor agonist in an amount effective to delay the onset of ejaculation in the subject during sexual stimulation.
    Type: Application
    Filed: April 5, 2012
    Publication date: August 30, 2012
    Inventors: KWEN-JEN CHANG, KLIM KING, KESTUTIS P. BICIUNAS, ROBERT W. MCNUTT, JR., WILLIAM PENDERGAST, SHY-TAI JAN
  • Patent number: 7683168
    Abstract: Diarylmethylpiperazine compounds are described, which are useful as mu and/or delta receptor opioid compounds, without central side effects. Pharmaceutical compositions containing such compounds are variously useful for peripheral or non-centrally mediated indications, including peripherally mediated and neuropathic pain, urogenital tract disorders, overactive bladder, urinary incontinence, sexual disorders, premature ejaculation, cough, lung edema, cardiac disorders, cardioprotection, gastro-intestinal disorders, diarrhea, irritable bowl syndrome, functional distention, immuno-modulation and anti-tumor activity.
    Type: Grant
    Filed: April 14, 2006
    Date of Patent: March 23, 2010
    Assignee: Mount Cook Bio Sciences, Inc.
    Inventors: Shyi-Tai Jan, Kwen-Jen Chang, Kestutis P. Biciunas, Xin Ma
  • Publication number: 20080193383
    Abstract: A method of reducing, treating or preventing drug-mediated respiratory depression, muscle rigidity, or nausea/vomiting in an animal, incident to the administration to said animal of a mixed delta/mu opioid agonist or a respiratory depression-mediating drug, comprising administering to the animal receiving said drug an effective amount of a delta receptor agonist compound. Preferred examples of such delta receptor agonist compound include diarylmethyl piperazine compounds and diarylmethyl piperidine compounds, and pharmaceutical compositions thereof, having utility in medical therapy for reducing respiratory depression associated with certain analgesics, such as mu opiates.
    Type: Application
    Filed: April 7, 2008
    Publication date: August 14, 2008
    Inventors: Kwen-Jen Chang, Robert W. McNutt, Hugh O. Pettit, Michael J. Bishop
  • Publication number: 20080125443
    Abstract: The present invention relates to compositions and methods of treatment for cardioprotection through the use of non-peptidic delta opioid receptor agonist compound(s) that mediate cardioprotective effects of ischemic preconditioning. The compounds are used to reduce injury associated with ischemia and reperfusion of cardiac tissue. Further, the compounds may be used in solutions preserving the viability of an isolated organ.
    Type: Application
    Filed: November 27, 2007
    Publication date: May 29, 2008
    Inventors: Kwen-Jen Chang, William Pendergast, Peter J. Gengo, Xin Ma
  • Patent number: 7314880
    Abstract: The present invention relates to compositions and methods of treatment for cardioprotection through the use of non-peptidic delta opioid receptor agonist compound(s) that mediate cardioprotective effects of ischemic preconditioning. The compounds are used to reduce injury associated with ischemia and reperfusion of cardiac tissue. Further, the compounds may be used in solutions preserving the viability of an isolated organ.
    Type: Grant
    Filed: December 31, 2003
    Date of Patent: January 1, 2008
    Assignee: Mount Cook Biosciences, Inc.
    Inventors: Kwen-Jen Chang, William Pendergast, Peter J. Gengo, Xin Ma
  • Publication number: 20070197786
    Abstract: (?)3-((S)-((2S,5R)-4-Allyl-2,5-dimethyl-1-piperazinyl)(3-thienyl)methyl)phenol and pharmaceutically acceptable esters or salts thereof, in essentially enantiomerically pure form have utility as a therapeutic agent for mediating analgesia and treating cardiac disorders, alcohol addiction, drug overdose, cough, lung edema, diarrhea, respiratory, and gastro-intestinal disorders.
    Type: Application
    Filed: March 9, 2007
    Publication date: August 23, 2007
    Inventor: KWEN-JEN CHANG