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:
Jan. 29, 2013
Filed:
Mar. 30, 2011
Luke C. Short, West Richland, WA (US);
Charles J. Barinaga, West Richland, WA (US);
Robert G. Ewing, Kennewick, WA (US);
Luke C. Short, West Richland, WA (US);
Charles J. Barinaga, West Richland, WA (US);
Robert G. Ewing, Kennewick, WA (US);
Battelle Memorial Institute, Richland, WA (US);
Abstract
A UV-LED photoemission ionization source and process are disclosed that provide ionization of analytes including volatile molecular species and organic residues for detection with various ion analyzers. The UV-LED source produces low-energy UV light (200 nm to 400 nm) that yields photoemission electrons from various conducting surfaces. These photoemission electrons provide direct and indirect ionization of analytes including trace organic residues without need of high electric fields.