Patents by Inventor Siew L. Chung

Siew L. Chung 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: 20210244656
    Abstract: Disclosed herein, in part, is a pharmaceutical formulation comprising isotretinoin or a pharmaceutically acceptable salt thereof, and a mucoadhesive polymer. A method of treating a mucosal disease comprising administering a disclosed pharmaceutical formulation to a subject in need thereof is also provided herein.
    Type: Application
    Filed: September 24, 2020
    Publication date: August 12, 2021
    Inventors: Hock S. Tan, Siew L. Chung
  • Patent number: 10874607
    Abstract: Disclosed herein, in part, is a pharmaceutical formulation comprising isotretinoin or a pharmaceutically acceptable salt thereof, and a mucoadhesive polymer. A method of treating a mucosal disease comprising administering a disclosed pharmaceutical formulation to a subject in need thereof is also provided herein.
    Type: Grant
    Filed: November 27, 2019
    Date of Patent: December 29, 2020
    Assignee: Skyline Biosciences LLC
    Inventors: Hock S. Tan, Siew L. Chung
  • Patent number: 10813880
    Abstract: Disclosed herein, in part, is a pharmaceutical formulation comprising isotretinoin or a pharmaceutically acceptable salt thereof, and a mucoadhesive polymer. A method of treating a mucosal disease comprising administering a disclosed pharmaceutical formulation to a subject in need thereof is also provided herein.
    Type: Grant
    Filed: November 27, 2019
    Date of Patent: October 27, 2020
    Assignee: Skyline Biosciences LLC
    Inventors: Hock S. Tan, Siew L. Chung
  • Publication number: 20200093735
    Abstract: Disclosed herein, in part, is a pharmaceutical formulation comprising isotretinoin or a pharmaceutically acceptable salt thereof, and a mucoadhesive polymer. A method of treating a mucosal disease comprising administering a disclosed pharmaceutical formulation to a subject in need thereof is also provided herein.
    Type: Application
    Filed: November 27, 2019
    Publication date: March 26, 2020
    Inventors: Hock S. Tan, Siew L. Chung
  • Publication number: 20200093734
    Abstract: Disclosed herein, in part, is a pharmaceutical formulation comprising isotretinoin or a pharmaceutically acceptable salt thereof, and a mucoadhesive polymer. A method of treating a mucosal disease comprising administering a disclosed pharmaceutical formulation to a subject in need thereof is also provided herein.
    Type: Application
    Filed: November 27, 2019
    Publication date: March 26, 2020
    Inventors: Hock S. Tan, Siew L. Chung
  • Patent number: 5468725
    Abstract: An alcohol-free transparent perfume is disclosed containing an alcohol-free perfume base, water and a stable transparent oil-in-water microemulsion flavor concentrate formed of water, at least one hydrophobic perfume oils, at least one cationic surfactant and at least one non-ionic surfactant in the absence of lower alkanols wherein the mixing ratio of water, oil and surfactant is defined according to the shaded area of FIG. 1.
    Type: Grant
    Filed: June 3, 1994
    Date of Patent: November 21, 1995
    Assignee: International Flvos & Fragrances Inc.
    Inventors: Eric P. Guenin, Karen A. Trotzinka, Leslie C. Smith, Craig B. Warren, Marina A. Munteanu, Siew L. Chung, Chee-Teck Tan
  • Patent number: 5320863
    Abstract: Described is a stable transparent oil-in-water microemulsion concentrate consisting essentially of:(i) water;(ii) one or more hydrophobic flavor or fragrance oils; and(iii) one or more surfactantswherein the mixing ratio of the water, oil and surfactant is, referring to FIG. 1A, within the range surrounded by the lines connecting points A, B and C of FIG. 1A. Also described is a process for preparing such transparent microemulsion compositions. Also described is a mouthwash containing said transparent microemulsion compositions and a process for preparing same. Also described is a perfume composition containing said transparent microemulsion compositions and the process for preparing same.
    Type: Grant
    Filed: October 1, 1993
    Date of Patent: June 14, 1994
    Assignee: International Flavors & Fragrances Inc.
    Inventors: Siew L. Chung, Chee-Teck Tan, Ivan M. Tuhill, Lewis G. Scharpf
  • Patent number: 5283056
    Abstract: Described is a stable transparent oil-in-water microemulsion concentrate consisting essentially of:(i) water;(ii) one or more hydrophobic flavor or fragrance oils; and(iii) one or more surfactantswherein the mixing ratio of the water, oil and surfactant is, referring to FIG. 1A, within the range surrounded by the lines connecting points A, B and C of FIG. 1A. Also described is a process for preparing such transparent microemulsion compositions. Also described is a mouthwash containing said transparent microemulsion compositions and a process for preparing same. Also described is a perfume composition containing said transparent microemulsion compositions and the process for preparing same.
    Type: Grant
    Filed: July 1, 1993
    Date of Patent: February 1, 1994
    Assignee: International Flavors & Fragrances Inc.
    Inventors: Siew L. Chung, Chee-Tack Tan, Ivan M. Tuhill, Lewis G. Scharpf