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:
Aug. 29, 1989
Filed:
Sep. 30, 1987
Cornell Research Foundation, Inc., Ithaca, NY (US);
Abstract
A device for interfacing between a microbore liquid chromatograph and a mass analyser. In such a device, liquid from the liquid chromatograph is sprayed through a stainless steel capillary tube into the atmospheric pressure ionization chamber of a mass spectrometer. A voltage of e.g., plus or minus 3 KV is applied to the stainless steel tube, and a nebulizing gas, e.g. nitrogen, is directed at high velocity past the tube tip through another tube encircling the stainless steel tube. The combination of the nebulizing gas and the electric potential disperses the liquid at room temperature into a fine mist providing an increased and more stable ion signal without thermal decomposition of the compounds being analysed.