Patents by Inventor Andrew M. Warchol

Andrew M. Warchol 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).

  • Hermetically-sealed miniaturized discharge ionization detector
    Patent number: 6448777
    Abstract: An apparatus for and method of making a discharge ionization detector. The apparatus comprises a detector body, a detector cavity, located in the detector body and having a discharge electrode and an second discharge electrode, wherein an electric discharge runs between the second discharge electrode and the discharge electrode, and a signal electrode which attracts ionized molecules, an inlet interface, through which a discharge gas enters the detector, an analyte inlet, through which the analyte enters the detector cavity, and an outlet through which the analyte and discharge gas exit the detector body, wherein the apparatus is hermetically sealed. The apparatus is hermetically sealed by vacuum brazing the components to the detector body. The present invention can also have a detector volume as small as 10 micro-liters or less.
    Type: Grant
    Filed: August 20, 2001
    Date of Patent: September 10, 2002
    Assignee: Agilent Technologies, Inc.
    Inventors: Mahmoud F. Abdel-Rahman, Andrew M. Warchol, James W. Baker