Patents by Inventor Randy Whittal

Randy Whittal 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).

  • Device for time lag focusing time-of-flight mass spectrometry
    Patent number: 5777325
    Abstract: A laser desorption ionization instrument for and method of measuring the molecular weight of large organic molecules includes a time of flight mass spectrometer (TOF MS). The TOF MS instrument provides optimized optic design for both DC and TLF modes. The invention further provides dynamic resolution enhancement for a given ejection pulse, along with optimized ion ejection pulses relative to the ion optic elements. The invention also provides means for compensating for difference in total kinetic energy among ions of different mass; high resolution detection means for improved sensitivity for large molecular weight species. The invention further provides x-y-z stage for sample presentation of both standard MALDI and gel or membrane based samples.
    Type: Grant
    Filed: May 6, 1996
    Date of Patent: July 7, 1998
    Assignee: Hewlett-Packard Company
    Inventors: Scot R. Weinberger, Edward P. Donlon, Yevgeny Kaplun, Tor C. Anderson, Liang Li, Larry Russon, Randy Whittal