Patents by Inventor Michael Hsin-Chwen Li

Michael Hsin-Chwen Li 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: 9687445
    Abstract: A control release and abuse-resistant opiate drug delivery oral wafer or edible oral film dosage to treat pain and substance abuse is provided. The drug delivery oral wafer or edible oral film dosage includes a controlled release layer containing enteric-release beads dispersed in a polymer matrix. The enteric-release beads are formed from a therapeutic amount of an opioid agonist and/or pharmaceutically acceptable salt thereof and a sub-therapeutic amount of opioid antagonist and/or pharmaceutically acceptable salt thereof coated or encapsulated in an enteric-release polymer. The controlled release polymer matrix dissolves or disintegrates following administration or consumption of the oral wafer or edible oral film, releasing the enteric-release beads to be swallowed, with subsequent absorption of the active ingredients within the patient's intestines.
    Type: Grant
    Filed: April 12, 2012
    Date of Patent: June 27, 2017
    Assignee: LTS Lohmann Therapie-Systeme AG
    Inventor: Michael Hsin Chwen Li
  • Patent number: 9597287
    Abstract: An edible oral film strip dosage form containing an unpalatable acidic active pharmaceutical ingredient, particularly ketoprofen, and an ion exchange resin as a primary taste masking agent, along with an optional alkaline agent and further optionally containing one or more secondary taste masking agents is provided. The edible oral film strip dosage matrix is formed from at least one water soluble or miscible polymer(s). The optional secondary taste masking ingredients include one or more of flavoring agent(s), sweetener(s), cooling sensation agent(s), and taste receptor blocker(s). The inventive dosages minimize or completely mask the bitterness, burning sensation and throat irritation associated with many acidic active pharmaceutical ingredients. Methods for preparing the inventive edible oral film strip dosage forms are disclosed, as well as their method of administration.
    Type: Grant
    Filed: May 30, 2012
    Date of Patent: March 21, 2017
    Assignee: LTS Lohmann Therapic-Systeme AG
    Inventors: Michael Hsin Chwen Li, Markus Krumme
  • Publication number: 20140155483
    Abstract: An edible oral film strip dosage form containing an unpalatable acidic active pharmaceutical ingredient, particularly ketoprofen, and an ion exchange resin as a primary taste masking agent, along with an optional alkaline agent and further optionally containing one or more secondary taste masking agents is provided. The edible oral film strip dosage matrix is formed from at least one water soluble or miscible polymer(s). The optional secondary taste masking ingredients include one or more of flavoring agent(s), sweetener(s), cooling sensation agent(s), and taste receptor blocker(s). The inventive dosages minimize or completely mask the bitterness, burning sensation and throat irritation associated with many acidic active pharmaceutical ingredients. Methods for preparing the inventive edible oral film strip dosage forms are disclosed, as well as their method of administration.
    Type: Application
    Filed: May 30, 2012
    Publication date: June 5, 2014
    Applicant: LTS LOHMANN THERAPIE-SYSTEME AG
    Inventors: Michael Hsin Chwen Li, Markus Krumme
  • Publication number: 20130273162
    Abstract: A control release and abuse-resistant opiate drug delivery oral wafer or edible oral film dosage to treat pain and substance abuse is provided. The drug delivery oral wafer or edible oral film dosage includes a controlled release layer containing enteric-release beads dispersed in a polymer matrix. The enteric-release beads are formed from a therapeutic amount of an opioid agonist and/or pharmaceutically acceptable salt thereof and a sub-therapuetic amount of opioid antagonist and/or pharmaceutically acceptable salt thereof coated or encapsulated in an enteric-release polymer. The controlled release polymer matrix dissolves or disintegrates following administration or consumption of the oral wafer or edible oral film, releasing the enteric-release beads to be swallowed, with subsequent absorption of the active ingredients within the patient's intestines.
    Type: Application
    Filed: April 12, 2012
    Publication date: October 17, 2013
    Inventor: Michael Hsin Chwen LI
  • Patent number: 5595661
    Abstract: A process for recovering a halocarbon from a liquid waste slurry containing the halocarbon admixed with one or more contaminants using countercurrent or co-current extraction is described.
    Type: Grant
    Filed: August 3, 1994
    Date of Patent: January 21, 1997
    Assignee: Schering Corporation
    Inventors: Michael Hsin-Chwen Li, Hari K. Tikku, Marc Steinman