Chemistry: analytical and immunological testing – Nuclear magnetic resonance – electron spin resonance or other...
Reexamination Certificate
2003-04-30
2010-12-28
Jung, Unsu (Department: 1641)
Chemistry: analytical and immunological testing
Nuclear magnetic resonance, electron spin resonance or other...
C436S174000, C435S287800, C250S281000, C250S282000, C250S286000, C250S287000
Reexamination Certificate
active
07858387
ABSTRACT:
A method of scanning a sample plate surface mask in an area adjacent to a conductive area using mass spectrometry is disclosed. The method comprises the steps of providing a sample plate including a mask applied with a rough surface to the electrically conductive surface to produce a sample site comprising a central portion formed from the electrically conductive surface and a marginal portion of the mask, preparing an analyte comprising mixing a biomolecule with an organic solvent, an aqueous solution, and a matrix selected from the group of α-cyano-4-hydroxycinnamic acid and3,5-dimethoxy-4-hydroxycinnamic acid; applying the analyte to the sample site; forming at least one crystal of the analyte in an area on the mask adjacent to the conductive area, and scanning the area on the mask adjacent to the conductive area with a laser beam.
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Jung Unsu
Lum Leon Y.
PerkinElmer Health Sciences, Inc.
St. Onge Steward Johnston & Reens LLC
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