Patents by Inventor Thomas Rettberg

Thomas Rettberg 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).

  • Method and apparatus for concentrating a selected element for atomic spectroscopy
    Patent number: 4529307
    Abstract: A method and apparatus are disclosed for concentrating a selected element of a sample in a furnace or electrothermal atomizer for atomic spectroscopy. The apparatus includes a heating receptacle comprised of materials capable of withstanding the temperatures of atomization of such a sample. The apparatus further includes a means for heating the receptacle to the temperatures of atomization and a means for selectively cooling a selected location of the receptacle to a temperature below the vaporization temperature of the desired element in order to selectively condense the element at the location.
    Type: Grant
    Filed: April 5, 1983
    Date of Patent: July 16, 1985
    Assignee: Board of Regents, The University of Texas System
    Inventors: James A. Holcombe, Thomas Rettberg