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:
Jul. 22, 1980
Filed:
Feb. 14, 1979
Thomas F Brodasky, Oshtemo Township, Kalamazoo County, MI (US);
The Upjohn Company, Kalamazoo, MI (US);
Abstract
A sample introduction device for introducing a vaporized sample to the ion source of a mass spectrometer of a combined gas chromatography-mass spectrographic (GC/MS) apparatus. The sample introduction device replaces the jet separator of the GC/MS apparatus. The sample introduction device includes a sample holding tube which is releasably attachable to the isolation valve between the gas chromatography column and the mass spectrometer of the GC/MS apparatus. The sample introduction device includes means for connecting the sample holding tube to a vacuum source by means of a valve so that the sample holding tube can be evacuated prior to connecting the sample holding tube through the isolation valve to the ion source of the mass spectrometer.