Patents by Inventor Sheng-Fen Li

Sheng-Fen Li 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).

  • Hydrogen peroxide stabilization in assays
    Patent number: 5155025
    Abstract: Hydrogen peroxide stabilized in the presence of blood components by the addition of a metal oxide oxidant, an anionic chelating agent, particularly hydroxylic carboxylate and nitroprusside, and a catalase inhibitor. The composition finds particular application for stabilizing hydrogen peroxide in a diagnostic assay on a bibulous support.
    Type: Grant
    Filed: February 18, 1992
    Date of Patent: October 13, 1992
    Assignee: ChemTrak
    Inventors: Michael P. Allen, Sheng-Fen Li