Patents by Inventor Ondrej Votava

Ondrej Votava 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).

  • Patent number: 6903333
    Abstract: A new mass spectrometer (10) is described in which sample molecules (26) are ionized and caused to oscillate to and fro by reflecting electric fields established between two electrodes (12, 14) in a vacuum chamber (20). A mesh electron producing electrode (16) is located between reflector electodes (12, 14) and produces electrons by secondary emission on each pass of the oscillating ions when some of those ions strike the mesh. The secondary eldctrons are detected (18) after passage through reflector electrode (12), which is alos a mesh. The frequency of oscillation of the ions depends upon their mass and from the frequency distribution of the signals from each electron production event it is possible to identify the ions of different masses. The invention allows for a much more compact spectrometer instrument compared to a Time of flight Mass Spectrometer which is less expensive than a Fourier Transform Mass emplying ion-cyclotron resonance.
    Type: Grant
    Filed: May 3, 2002
    Date of Patent: June 7, 2005
    Assignee: The University of Sydney
    Inventors: Marc B. A. West, Fangtong Zhang, Ondrej Votava, Scott H. Kable
  • Publication number: 20040245454
    Abstract: A new mass spectrometer (10) is described in which sample molecules (26) are ionized and caused to oscillate to and fro by reflecting electric fields established between two electrodes (12, 14) in a vacuum chamber (20). A mesh electron producing electrode (16) is located between reflector electodes (12, 14) and produces electrons by secondary emission on each pass of the oscillating ions when some of those ions strike the mesh. The secondary eldctrons are detected (18) after passage through reflector electrode (12), which is alos a mesh. The frequency of oscillation of the ions depends upon their mass and from the frequency distribution of the signals from each electron production event it is possible to identify the ions of different masses. The invention allows for a much more compact spectrometer instrument compared to a Time of flight Mass Spectrometer which is less expensive than a Fourier Transform Mass emplying ion-cyclotron resonance.
    Type: Application
    Filed: October 24, 2003
    Publication date: December 9, 2004
    Inventors: Marc B A West, Fangtong Zhang, Ondrej Votava, Scott H. Kable