Patents by Inventor Eugene M. Wong

Eugene M. Wong 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).

  • Ionization chamber and mass spectrometry system containing an asymmetric electrode
    Patent number: 5838003
    Abstract: The invention relates to an ionization chamber. More particularly, the invention relates to a mass spectrometer system having an electrospray ionization chamber incorporating an asymmetric electrode.
    Type: Grant
    Filed: September 27, 1996
    Date of Patent: November 17, 1998
    Assignee: Hewlett-Packard Company
    Inventors: James L. Bertsch, Steven M. Fischer, Kent D. Henry, Eugene M. Wong
  • Angled chamber seal for atmospheric pressure ionization mass spectrometry
    Patent number: 5753910
    Abstract: An atmospheric pressure ionization source is provided which includes an ionization chamber that is formed from the combination of an angled chamber body and a correspondingly angled chamber seal. The ionization chamber is used for electrospray or atmospheric pressure chemical ionization of a liquid sample to provide ionized molecules. The ionized molecules can be passed to an associated analytical device that is capable of detecting and measuring the mass-to-charge ratio and/or the mass and charge of the molecules. A mass spectrometer which includes the present atmospheric pressure ionization source is also provided, as well as a liquid chromatography/mass spectrometry (LC/MS) analysis system which includes an LC/MS interface comprising the present atmospheric pressure ionization source.
    Type: Grant
    Filed: July 12, 1996
    Date of Patent: May 19, 1998
    Assignee: Hewlett-Packard Company
    Inventors: Darrell L. Gourley, Eugene M. Wong, James L. Bertsch, Robert G. Nordman