Method for operating an ion trap mass spectrometer system

Radiant energy – Ionic separation or analysis – Methods

Reexamination Certificate

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C250S292000, C250S281000, C250S282000, C250S290000, C250S293000

Reexamination Certificate

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07622712

ABSTRACT:
A method of operating a mass spectrometer system having an ion trap is provided. The method comprises encoding a selected characteristic in at least one of the first group of precursor ions and the first plurality of fragments, wherein the encoding operation is applied to at least one of the first group of precursor ions and the first plurality of fragments without being applied to other ions such that the first plurality of fragment ions has the first selected characteristic and the other ions lack the first selected characteristic.

REFERENCES:
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patent: 7049580 (2006-05-01), Londry et al.
patent: 7227137 (2007-06-01), Londry et al.
patent: 2003/0189168 (2003-10-01), Londry et al.
patent: 2004/0094702 (2004-05-01), Clemmer
patent: 2005/0242279 (2005-11-01), Vrentchikov
“Mass Spectrometry-based proteomics” Ruedi Aebersold et al, Nature, vol. 422, Mar. 13, 2003, pp. 198-207. Fig. 2 b-c and related description.
International Search Report and Written Opinion, PCT/CA2008/000317, mailed May 27, 2008.

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