Patents by Inventor C-P. Sherman Hsu

C-P. Sherman Hsu 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).

  • Solid phase microextraction of trace amounts of organic analytes
    Patent number: 5576217
    Abstract: A method for enhancing detection sensitivity of suspected trace amounts of organic analytes and particularly semivolatile organic analytes extractable from a sample by an organic solvent carrier matrix and subsequent extraction and analysis of said trace organic analytes by SPME wherein the improvement comprises exchanging the organic solvent carrier matrix containing the trace organic analytes for an aqueous carrier matrix before performing SPME fiber extraction and detection of the trace organic analytes.
    Type: Grant
    Filed: February 28, 1995
    Date of Patent: November 19, 1996
    Assignee: Mallinckrodt Baker, Inc.
    Inventor: C-P. Sherman Hsu