Patents by Inventor Huai-Hung Kao

Huai-Hung Kao 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).

  • Publication number: 20080069881
    Abstract: Abuse-resistant, controlled release opioid tablets are a combination containing an opioid antagonist such as naloxone at a level above that needed to suppress the euphoric effect of the opioid, if the combination were crushed to break the controlled release properties causing the opioid and opioid antagonist to be released as an immediate release product as a single dose. The controlled release nature of the tablet prevents the accumulation of orally effective amounts of opioid antagonist when taken normally. The opioid antagonist is contained in a controlled-release matrix and released, over time, with the opioid.
    Type: Application
    Filed: September 14, 2007
    Publication date: March 20, 2008
    Applicant: Endo Pharmaceuticals, Inc.
    Inventors: Frank Caruso, Huai-Hung Kao
  • Publication number: 20080050431
    Abstract: Sustained release formulations of oxymorphone or pharmaceutically acceptable salts thereof; methods for making the sustained release formulations of oxymorphone or pharmaceutically acceptable salts thereof; and methods for using the sustained release formulations of oxymorphone or pharmaceutically acceptable salts thereof to treat patients suffering from pain are provided.
    Type: Application
    Filed: August 13, 2007
    Publication date: February 28, 2008
    Applicant: Penwest Pharmaceuticals Company.
    Inventors: Anand Baichwal, Huai-Hung Kao, Troy McCall
  • Publication number: 20070281016
    Abstract: The invention is a controlled release composition comprising a therapeutic amount of an active ingredient in a controlled release matrix. The matrix comprises a combination of a pharmaceutically acceptable acrylic polymer and a metal hydroxide. The amount of surfactant, relative to a given amount of acrylic polymer, is selected for and corresponds to a predetermined release rate for said active ingredient. The compound is preferably used to provide controlled release dosage of oxycodone through a matrix of ammonio methacrylic polymer and sodium lauryl sulfate.
    Type: Application
    Filed: June 6, 2006
    Publication date: December 6, 2007
    Applicant: Endo Pharmaceuticals Inc., a Delaware corporation
    Inventors: Huai-Hung Kao, Sou-Chan Chang, Yadi Zeng, Fai Jim
  • Publication number: 20070281017
    Abstract: The invention is a controlled release composition comprising a therapeutic amount of an active ingredient in a controlled release matrix. The matrix comprises a combination of a pharmaceutically acceptable acrylic polymer and a metal hydroxide. The amount of metal hydroxide, relative to a given amount of acrylic polymer, is selected for and corresponds to a pre-determined release rate for said active ingredient. The compound is preferably used to provide controlled release dosage of oxycodone through a matrix of ammonio methacrylic polymer and magnesium hydroxide.
    Type: Application
    Filed: June 6, 2006
    Publication date: December 6, 2007
    Applicant: Endo Pharmaceuticals Inc., a Delaware corporation
    Inventors: Huai-Hung Kao, Sou-Chan Chang, Yadi Zeng, Fai Jim
  • Patent number: 7276250
    Abstract: Sustained release formulations of oxymorphone or pharmaceutically acceptable salts thereof; methods for making the sustained release formulations of oxymorphone or pharmaceutically acceptable salts thereof; and methods for using the sustained release formulations of oxymorphone or pharmaceutically acceptable salts thereof to treat patients suffering from pain are provided.
    Type: Grant
    Filed: July 3, 2002
    Date of Patent: October 2, 2007
    Assignee: Penwest Pharmaceuticals Company
    Inventors: Anand R. Baichwal, Huai-Hung Kao, Troy W. McCall
  • Publication number: 20070134328
    Abstract: The invention pertains to a method of relieving pain by administering a controlled release pharmaceutical tablet containing oxymorphone which produces a mean minimum blood plasma level 12 to 24 hours after dosing, as well as the tablet producing the sustained pain relief.
    Type: Application
    Filed: February 28, 2007
    Publication date: June 14, 2007
    Applicant: Endo Pharmaceuticals, Inc.
    Inventors: Huai-Hung Kao, Anand Baichwal, Troy McCall, David Lee
  • Publication number: 20050169990
    Abstract: Process for dry mixing a controlled release oral dosage form are provided. The dosage form is produced by mixing, tableting, and curing dosage forms. The cured dosage forms exhibit controlled release properties superior to those of uncured tablets.
    Type: Application
    Filed: July 19, 2004
    Publication date: August 4, 2005
    Inventors: Huai-Hung Kao, Yadi Zeng, Fai Jim, Sou-Chan Chang
  • Publication number: 20040214849
    Abstract: In a method of treating pain a patient is administered a pharmaceutical composition of 6-hydroxy oxymorphone in an amount sufficient to induce analgesia. In one embodiment, the pharmaceutical composition is administered parenterally, preferably by injection and intravenous drip. To achieve the desired analgesic effect, blood plasma levels of 6-hydroxy oxymorphone are raised to at least approximately 0.05 ng/mL. Most preferably blood plasma levels of 6-hydroxy oxymorphone range at least 0.075 ng/mL during treatment. Administration of compositions containing 6-hydroxy oxymorphone, and one or more carriers, diluents, and excipients in an amount sufficient to induce analgesia is also contemplated.
    Type: Application
    Filed: July 3, 2002
    Publication date: October 28, 2004
    Inventors: Huai-Hung Kao, Richard Smith-Carliss, Troy McCall, David Lee
  • Publication number: 20030157167
    Abstract: The invention pertains to a method of relieving pain by administering a controlled release pharmaceutical tablet containing oxymorphine which produces a mean minimum blood plasma level 12 to 24 hours after dosing, as well as the tablet producing the sustained pain relief.
    Type: Application
    Filed: July 3, 2002
    Publication date: August 21, 2003
    Applicant: Endo Pharmaceuticals, Inc.
    Inventors: Huai-Hung Kao, Anand R. Baichwal, Troy McCall, David Lee
  • Publication number: 20030129230
    Abstract: Sustained release formulations of oxymorphone or pharmaceutically acceptable salts thereof; methods for making the sustained release formulations of oxymorphone or pharmaceutically acceptable salts thereof; and methods for using the sustained release formulations of oxymorphone or pharmaceutically acceptable salts thereof to treat patients suffering from pain are provided.
    Type: Application
    Filed: July 3, 2002
    Publication date: July 10, 2003
    Applicant: Penwest Pharmaceuticals Company
    Inventors: Anand R. Baichwal, Huai-Hung Kao, Troy W. McCall
  • Publication number: 20030129234
    Abstract: Sustained release formulations of oxymorphone or pharmaceutically acceptable salts thereof; methods for making the sustained release formulations of oxymorphone or pharmaceutically acceptable salts thereof; and methods for using the sustained release formulations of oxymorphone or pharmaceutically acceptable salts thereof to treat patients suffering from pain are provided.
    Type: Application
    Filed: July 3, 2002
    Publication date: July 10, 2003
    Applicant: Penwest Pharmaceuticals Company
    Inventors: Anand R. Baichwal, Huai-Hung Kao, Troy W. McCall
  • Publication number: 20030130297
    Abstract: In a method of treating pain, a patient is administered a pharmaceutical composition of 6-hydroxy oxymorphone in amount sufficient to induce analgesia. In one embodiment, the pharmaceutical composition is administered orally. Any known or later developed method of oral delivery may be used. To achieve the desired analgesic effect, blood plasma levels of 6-hydroxy oxymorphone are raised to at least approximately 0.2 ng/mL. Most preferably blood plasma levels of 6-hydroxy oxymorphone range at least 0.3 ng/mL during treatment. Administration of compositions containing 6-hydroxy oxymorphone, and one or more carriers, diluents, and excipients in an amount sufficient to induce analgesia is also contemplated.
    Type: Application
    Filed: July 3, 2002
    Publication date: July 10, 2003
    Applicant: Endo Pharmaceuticals, Inc.
    Inventors: Huai-Hung Kao, Richard Smith-Carliss, Troy McCall, David Lee
  • Publication number: 20030065002
    Abstract: Abuse-resistant, controlled release opioid tablets are a combination containing an opioid antagonist such as naloxone at a level that needed to suppress the euphoric effect of the opioid, if the combination were crushed to break the controlled release properties causing the opioid and opioid antagonist to be released as a immediate release product as a single dose. The controlled release nature of the table prevents the accumulation of orally effective amounts of opioid antagonist when taken normally. The opioid antagonist is contained in a controlled-release matrix and released, over time, with the opioid.
    Type: Application
    Filed: May 10, 2002
    Publication date: April 3, 2003
    Applicant: Endo Pharmaceuticals, Inc.
    Inventors: Frank S. Caruso, Huai-Hung Kao
  • Publication number: 20030064122
    Abstract: A pharmaceutical composition intended for oral use contains the effective ingredient(s), capsaicin, and other typical fillers and excipients. The composition is preferably in the form of a solid oral dosage form. Transdermally administered compositions are also within the purview of the invention. Aside from the effective pharmaceutical ingredient(s) the composition includes an amount of capsaicin which serves as a deterrent to the intranasal, intravenous, or oral abuse of the composition. Such a composition deters abusers from crushing prescription pharmaceutical tablets for abusive snorting, injection, or ingestion.
    Type: Application
    Filed: April 8, 2002
    Publication date: April 3, 2003
    Applicant: Endo Pharmaceuticals, Inc.
    Inventors: Michael Goldberg, Bradley Stuart Galer, Huai-Hung Kao
  • Publication number: 20030004177
    Abstract: The present invention pertains to a pharmaceutical dosage form comprising an opioid agonist and one or more opioid antagonists contained in a matrix separate from the opioid agonist. The separate matrix for the opioid antagonist allows independent release rates to be achieved for the opioid and opioid antagonist(s). The antagonist(s) can be released slowly or fully contained when the tablet is taken orally. Crushing the tablet allows full release of the antagonist(s), deterring abuse. The abuse deterring antagonist(s) may be an opioid antagonist, an irritant, another appropriate antagonist(s), or a combination thereof. The invention also allows variable release of the opioid and antagonist(s).
    Type: Application
    Filed: May 10, 2002
    Publication date: January 2, 2003
    Applicant: Endo Pharmaceuticals, Inc.
    Inventors: Huai-Hung Kao, Yadi Zeng, Michelle Howard-Sparks, Fai Jim