Patents by Inventor Xiuying Liu

Xiuying Liu 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: 20090324714
    Abstract: A dual adhesive layer dosage form for delivery of active agent to and across, the mucosa is disclosed. Particularly, bioadhesive tablets for administration at the vaginal mucosa are disclosed as having a central active layer sandwiched between two bioadhesive layers.
    Type: Application
    Filed: June 26, 2009
    Publication date: December 31, 2009
    Applicant: WYETH
    Inventors: Xiuying LIU, John KRESEVIC
  • Publication number: 20090099149
    Abstract: Bioadhesive films for delivery of active agent to the mucosa are disclosed. Particularly, bioadhesive films for treating the vaginal mucosa are disclosed.
    Type: Application
    Filed: October 3, 2008
    Publication date: April 16, 2009
    Applicant: Wyeth
    Inventors: Xiuying LIU, John KRESEVIC
  • Publication number: 20080286439
    Abstract: This invention provides baffles (10) for use in coating pans (50) within coating apparatus, and methods of manufacturing the baffles (10). The invention further provides methods of coating pharmaceutical formulations using the baffles (10) and coating pans (50) of the present invention.
    Type: Application
    Filed: November 5, 2007
    Publication date: November 20, 2008
    Applicant: WYETH
    Inventors: Xiuying LIU, Nizamuddin BAKSH, Sheetal KULKARNI, John KRESEVIC, Robin ENEVER
  • Publication number: 20080175905
    Abstract: The present invention is directed to bi-layer tablets comprising at least one estrogen in a first layer and a therapeutic agent in a second layer, and processes for their preparation.
    Type: Application
    Filed: November 28, 2007
    Publication date: July 24, 2008
    Applicant: Wyeth
    Inventors: Xiuying Liu, John Kresevic, Nizamuddin Baksh, Robin Enever
  • Publication number: 20080175908
    Abstract: The present invention is directed to tablet-in-tablet compositions comprising one or more estrogens in a first layer and a therapeutic agent in a second layer, and processes for their preparation
    Type: Application
    Filed: January 11, 2008
    Publication date: July 24, 2008
    Applicant: Wyeth
    Inventors: Xiuying Liu, John Kresevic, Nizamuddin Baksh, Robin Enever
  • Publication number: 20080107780
    Abstract: The invention provides sugar-containing compositions suitable for use in coating solid preparations such as tablets, pills, granules and grains. Methods of using such coatings are provided, as are solid dosage forms coated with the compositions. In some embodiments, the methods provide sugar coated tablets comprising conjugated estrogens, and a progestin, for example medroxyprogesterone acetate.
    Type: Application
    Filed: November 5, 2007
    Publication date: May 8, 2008
    Applicant: WYETH
    Inventors: John KRESEVIC, Sheetal KULKARNI, Xiuying LIU, Nizamuddin BAKSH, Robin ENEVER
  • Patent number: 5589046
    Abstract: The present invention relates to a room temperature carbon monoxide gas sensor and a process for preparing the same. The said sensor is prepared by using SnO.sub.2 as base material, Y.sub.2 O.sub.3 La.sub.2 O.sub.3, Cr, Pt black and Al.sub.2 O.sub.3 as additives, after grinding, sintering and aging steps, a sensor which can quantitative and selectively detect carbon monoxide in the atmosphere having a carbon monoxide concentration in the range of 25-600 ppm is obtained. Due to the addition of high purity Cr, the rate of adsorb and desorption of gases of the sensor of the present invention is accelerated, the response and recovery time are less than 10 and 15 seconds respectively.
    Type: Grant
    Filed: December 16, 1994
    Date of Patent: December 31, 1996
    Assignee: Chang Chun Institute of Applied Chemistry of the Chinese Academy of Sciences
    Inventors: Wenfan Li, Xiuying Liu