Patents by Inventor Wei-Cheng Liaw

Wei-Cheng Liaw 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: 20220233522
    Abstract: Disclosed herein are otic product kits for administration of a sterilized formulation. In some embodiments, the otic product kit comprises: an aseptic container containing the sterilized formulation; a syringe; and an administration needle connectable to the syringe, wherein the sterilized formulation comprising: from about 5.5 wt % to about 6.5 wt % multiparticulate ciprofloxacin; from about 15 wt % to about 17 wt % poloxamer 407; and water. Also disclosed herein are methods of preparing and administrating the sterilized formulation. In some embodiments, the method comprising (1) transferring the sterilized otic formulation from an aseptic container to a syringe through a preparation needle; (2) replacing the preparation needle with an administration needle; and (3) injecting the sterilized otic formulation from the syringe through the administration needle into the ear of a patient.
    Type: Application
    Filed: December 29, 2021
    Publication date: July 28, 2022
    Inventors: Scott H. COLEMAN, Wei-Cheng LIAW, Jerry WROBLEWSKI, Robert SAVEL
  • Patent number: 11246863
    Abstract: Disclosed herein are otic product kits for administration of a sterilized formulation. In some embodiments, the otic product kit comprises: an aseptic container containing the sterilized formulation; a syringe; and an administration needle connectable to the syringe, wherein the sterilized formulation comprising: from about 5.5 wt % to about 6.5 wt % multiparticulate ciprofloxacin; from about 15 wt % to about 17 wt % poloxamer 407; and water. Also disclosed herein are methods of preparing and administrating the sterilized formulation. In some embodiments, the method comprising (1) transferring the sterilized otic formulation from an aseptic container to a syringe through a preparation needle; (2) replacing the preparation needle with an administration needle; and (3) injecting the sterilized otic formulation from the syringe through the administration needle into the ear of a patient.
    Type: Grant
    Filed: December 9, 2016
    Date of Patent: February 15, 2022
    Assignee: ALK-ABELLÓ, INC.
    Inventors: Scott H. Coleman, Wei-Cheng Liaw, Jerry Wroblewski, Robert Savel
  • Publication number: 20190000839
    Abstract: Disclosed herein are otic product kits for administration of a sterilized formulation. In some embodiments, the otic product kit comprises: an aseptic container containing the sterilized formulation; a syring; and an administration needle connectable to the syringe, wherein the sterilized formulation comprising: from about 5.5 wt % to about 6.5 wt % multiparticulate ciprofloxacin; from about 15 wt % to about 17 wt % poloxamer 407; and water. Also disclosed herein are methods of preparing and administrating the sterilized formulation. In some embodiments, the method comprising (1) transferring the sterilized otic formulation from an aseptic container to a syringe through a preparation needle; (2) replacing the preparation needle with an administration needle; and (3) injecting the sterilized otic formulation from the syringe through the administration needle into the ear of a patient.
    Type: Application
    Filed: December 9, 2016
    Publication date: January 3, 2019
    Applicant: OTONOMY, INC.
    Inventors: Scott H. COLEMAN, Wei-Cheng LIAW, Jerry WROBLEWSKI, Robert SAVEL
  • Patent number: 9757484
    Abstract: Disclosed herein are methods of making sterilized ciprofloxacin compositions. In some embodiments, the method includes the steps of: (a) forming an aqueous suspension comprising ciprofloxacin particles; (b) heating the aqueous suspension comprising ciprofloxacin particles at a temperature range of from about 100° C. to about 120° C.; and (c) allowing the aqueous suspension comprising ciprofloxacin particles to cool down. Also described herein are otic formulations containing ciprofloxacin formed by the disclosed methods, and therapeutic use of such otic formulation for providing sustained release of ciprofloxacin into the ear for treating various otic disorders and conditions.
    Type: Grant
    Filed: October 30, 2015
    Date of Patent: September 12, 2017
    Assignee: OTONOMY, INC.
    Inventors: Scott H. Coleman, Wei-Cheng Liaw, Jerry Wroblewski, Robert Savel
  • Publication number: 20160279274
    Abstract: Disclosed herein are methods of making sterilized ciprofloxacin compositions. In some embodiments, the method includes the steps of: (a) forming an aqueous suspension comprising ciprofloxacin particles; (b) heating the aqueous suspension comprising ciprofloxacin particles at a temperature range of from about 100° C. to about 120° C.; and (c) allowing the aqueous suspension comprising ciprofloxacin particles to cool down. Also described herein are otic formulations containing ciprofloxacin formed by the disclosed methods, and therapeutic use of such otic formulation for providing sustained release of ciprofloxacin into the ear for treating various otic disorders and conditions.
    Type: Application
    Filed: October 30, 2015
    Publication date: September 29, 2016
    Inventors: Scott H. Coleman, Wei-Cheng Liaw, Jerry Wroblewski, Robert Savel
  • Publication number: 20160000948
    Abstract: Disclosed herein are methods of making sterilized ciprofloxacin compositions. In some embodiments, the method includes the steps of: (a) forming an aqueous suspension comprising ciprofloxacin particles; (b) heating the aqueous suspension comprising ciprofloxacin particles at a temperature range of from about 100° C. to about 120° C.; and (c) allowing the aqueous suspension comprising ciprofloxacin particles to cool down. Also described herein are otic formulations containing ciprofloxacin formed by the disclosed methods, and therapeutic use of such otic formulation for providing sustained release of ciprofloxacin into the ear for treating various otic disorders and conditions.
    Type: Application
    Filed: July 1, 2015
    Publication date: January 7, 2016
    Inventors: Scott H. Coleman, Wei-Cheng Liaw, Jerry Wroblewski, Robert Savel
  • Patent number: 9220796
    Abstract: Disclosed herein are methods of making sterilized ciprofloxacin compositions. In some embodiments, the method includes the steps of: (a) forming an aqueous suspension comprising ciprofloxacin particles; (b) heating the aqueous suspension comprising ciprofloxacin particles at a temperature range of from about 100° C. to about 120° C.; and (c) allowing the aqueous suspension comprising ciprofloxacin particles to cool down. Also described herein are otic formulations containing ciprofloxacin formed by the disclosed methods, and therapeutic use of such otic formulation for providing sustained release of ciprofloxacin into the ear for treating various otic disorders and conditions.
    Type: Grant
    Filed: July 1, 2015
    Date of Patent: December 29, 2015
    Assignee: OTONOMY, INC.
    Inventors: Scott H. Coleman, Wei-Cheng Liaw, Jerry Wroblewski, Robert Savel
  • Patent number: 6124349
    Abstract: The present invention provides methods for producing pharmaceutical-grade particulate dithiocarbamates from secondary amines by vigorously contacting at least one secondary amine and a pharmaceutically acceptable diluent that is a solvent for the carbon disulfide, but not for the secondary amine in an inert gas atmosphere, cooling the mixture so as to precipitate the dithiocarbamate therefrom, and separating the precipitated dithiocarbamate from the cooled mixture. The preferred solvent contains absolute ethanol. In alternative embodiments, the invention further provides methods for purifying a dithiocarbamate to obtain a pharmaceutical-grade dithiocarbamate particulate from a dithiocarbamate feed and methods for producing a sterile pharmaceutical-grade dithiocarbamate from a dithiocarbamate feed.
    Type: Grant
    Filed: February 18, 1999
    Date of Patent: September 26, 2000
    Assignee: Medinox, Inc.
    Inventors: Vassil P. Vassilev, Wei-Cheng Liaw, Ching-San Lai
  • Patent number: 5091182
    Abstract: A dispensing unit for a ketorolac topical gel formulation is disclosed, wherein the dispensing unit comprises a ketorolac topical gel formulation and a gas-impermeable multi-layered container wherein the container is comprised of a polyolefin inner layer and a metal foil outer layer.
    Type: Grant
    Filed: July 23, 1990
    Date of Patent: February 25, 1992
    Assignee: Syntex (U.S.A.) Inc.
    Inventors: John T. H. Ong, Jean S. Fujiki, Wei-Cheng Liaw