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. 22, 2006
Filed:
Apr. 29, 2004
Harald Oser, Menlo Park, CA (US);
Michael J. Coggiola, Sunnyvale, CA (US);
Steven E. Young, Mountain View, CA (US);
David R. Crosley, Palo Alto, CA (US);
Harald Oser, Menlo Park, CA (US);
Michael J. Coggiola, Sunnyvale, CA (US);
Steven E. Young, Mountain View, CA (US);
David R. Crosley, Palo Alto, CA (US);
SRI International, Menlo Park, CA (US);
Abstract
A method and apparatus are provided for analyzing an analyte at low concentration in a liquid sample by photoionization and mass spectrometry. An inlet system is provided for direct injection of the liquid sample using a capillary tube. The method and apparatus allow for 20 to 2000-fold improvement of the lower detection limit of an analyte in a liquid sample compared to a conventional liquid chromatography/mass spectrometer apparatus.