Patents by Inventor Richard E. Hartford

Richard E. Hartford 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).

  • Mass spectrometer with a plurality of ionization probes
    Patent number: 6501073
    Abstract: A multiple sample mass spectrometer having multiple atmospheric pressure ionization probes, each forming an ion spray with passages associated with each of said ion sprays for introducing sample ions into the mass spectrometer for analysis. The flow of ions through selected passages is selectively blocked whereby to permit analysis of ions from selected ionization probes.
    Type: Grant
    Filed: October 4, 2000
    Date of Patent: December 31, 2002
    Assignee: Thermo Finnigan LLC
    Inventors: Iain C. Mylchreest, Tina A. E. Hemenway, Richard E. Hartford