Patents by Inventor John A Chakel

John A Chakel 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).

  • Miniaturized device for separating the constituents of a sample and delivering the constituents of the separated sample to a mass spectrometer
    Patent number: 6459080
    Abstract: “A miniaturized planar device is described for use in a liquid phase analysis system. The device comprises a separation compartment that is in fluidic communication with a make-up flow channel and a channel compartment that terminates in an on-device mass spectrometer delivery means. The device is formed by microfabrication of microstructures in novel support substrates.
    Type: Grant
    Filed: June 2, 1999
    Date of Patent: October 1, 2002
    Assignee: Agilent Technologies, Inc.
    Inventors: Hongfeng Yin, Sally A Swedberg, John A Chakel