The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 29, 1979
Filed:
Aug. 05, 1977
Donald F Hunt, Charlottesville, VA (US);
Jeffrey Shabanowitz, Charlottesville, VA (US);
University of Virginia, Charlottesville, VA (US);
Abstract
An apparatus for ionizing and vaporizing non-volatile or thermally labile molecules of a sample for introduction into a mass spectrometer analyzer which comprises a housing containing an ionization chamber; an ion exit port for the introduction of gaseous ions from said ionization chamber into a mass spectrometer analyzer on the portion of the housing attached to said mass spectrometer analyzer; inlet means for introducing a gaseous reactant into said ionization chamber within said housing; inlet means for admitting high energy radiation into said ionization chamber within said housing to at least partially ionize the molecules of said gaseous reactant; aperture means open into said ionization chamber of said housing for admitting a conductive emitter characterized by having a conductive element of a highly irregular surface upon which is deposited said sample for analysis into said mass spectrometer analyzer; and a vacuum exit aperture in said housing by which the pressure within said ionization chamber can be reduced.