Patents by Inventor Lei-Shu Wu

Lei-Shu Wu 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).

  • Stabilized naloxone formulations
    Patent number: 5866154
    Abstract: Physically and chemically stable pharmaceutical compositions useful for administering naloxone by injection are described. These compositions are essentially aqueous solutions having a pH between 3.0-3.5, and containing naloxone, an acidic or buffer component, a tonicity-adjusting agent, and a stabilizing agent, said composition being optionally sterilized by autoclaving.
    Type: Grant
    Filed: June 25, 1996
    Date of Patent: February 2, 1999
    Assignee: The DuPont Merck Pharmaceutical Company
    Inventors: Surendra Mohan Bahal, Lei-Shu Wu
  • Dry powder composition of hydroxyethyl starch suitable for reconstitution
    Patent number: 5704297
    Abstract: The present invention relates to a dry powder composition of hydroxyethyl starch suitable for reconstitution and comprising hydroxyethyl starch of a molecular weight of up to about 2,000,000, a degree of substitution of from about 0.4 to about 0.7, and containing less than about 0.5 parts by weight of ethylene glycol per 100 parts of the hydroxyethyl starch, the hydroxyethyl starch comprising from about 4% to about 40% by weight of the composition. The composition includes at least one soluble component in addition to the hydroxyethyl starch chosen from dextrose, lactose or mannitol.
    Type: Grant
    Filed: February 6, 1991
    Date of Patent: January 6, 1998
    Assignee: The DuPont Merck Pharmaceutical Company
    Inventors: Munir Alwan Hussain, Raghunath Srinivas, Lei-Shu Wu