Patents by Inventor Wei J. Xia

Wei J. Xia 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).

  • Intranasal formulations for promoting sleep and method of using the same
    Patent number: 5874450
    Abstract: Intranasal dosage units for promoting sleep in a mammal are disclosed. The dosage units are in the form of an aqueous buffered solution having a pH greater than 7.0, a sleep-promoting amount of Doxylamine, and an effective amount of an anionic surfactant. The anionic surfactant amount is an amount effective to provide a peak plasma concentration of Doxylamine to be reached within 30 minutes of administering the dosage unit to the nasal mucosa of a mammal. The dosage units are particularly suitable for administration to humans.
    Type: Grant
    Filed: September 29, 1997
    Date of Patent: February 23, 1999
    Assignee: Nastech Pharmaceutical Company, Inc.
    Inventors: Charanjit R. Behl, Jorge C. DeMeireles, Harish K. Pimplaskar, Vincent D. Romeo, Anthony P. Sileno, Wei J. Xia
  • Method for increasing the solubility of clemastine and pharmaceutical compositions prepared therefrom
    Patent number: 5770618
    Abstract: A method is disclosed for increasing the solubility of clemastine through the use of organic acid or its salts as a solubilizing agent. Particularly useful as solubilizing agents are salts of carboxylic acids, such as fumarate, maleate and citrate. Pharmaceutical compositions containing clemastine, and organic acids or its salts as solubilizing agents, are also disclosed.
    Type: Grant
    Filed: November 13, 1996
    Date of Patent: June 23, 1998
    Assignee: Nastech Pharmaceutical Company, Inc.
    Inventors: Charanjit R. Behl, Jorge C. deMeireles, Vincent D. Romeo, Anthony P. Sileno, Harish K. Pimplaskar, Wei J. Xia