Patents by Inventor Robert John Flett

Robert John Flett 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).

  • Preparation and measurement of ultra micro amounts of nitrogen
    Patent number: 4095949
    Abstract: This apparatus is useful for converting microgram quantities of particulate nitrogen into nitrogen gas such that it is possible to measure the quantity of nitrogen in the sample as well as to determine the isotopic contents of the nitrogen by spectrometric means. This apparatus constitutes an improvement over prior art inventions in that it is easier to operate and/or less expensive to build than was the case for similar previously known inventions.
    Type: Grant
    Filed: November 30, 1976
    Date of Patent: June 20, 1978
    Inventor: Robert John Flett