Patents by Inventor Thinh M Ha

Thinh M Ha 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).

  • Lens free collision cell with improved efficiency
    Patent number: 8481929
    Abstract: An ion collision cell is fabricated by four semi-circular profile elements, all of which are attach to the same reference plate. Consequently, all four elements remain aligned to the same reference plate. The four elements form a semi-circular channel with a semi-circular quad electrodes. The quad electrodes receive electrical potential to form the field required to focus and maintain the ions at the center of the channel. semi-circular insulators are provided on all sides of the channel so as to seal the channel over its length from the interior of the mass spectrometer.
    Type: Grant
    Filed: February 28, 2012
    Date of Patent: July 9, 2013
    Assignee: Bruker Daltonics, Inc.
    Inventors: Urs Steiner, Felician Muntean, Roy P Moeller, Thinh M Ha