Radiant energy – Ionic separation or analysis – Methods
Reexamination Certificate
2007-03-13
2007-03-13
Nguyen, Kiet T. (Department: 2881)
Radiant energy
Ionic separation or analysis
Methods
C250S281000, C702S022000
Reexamination Certificate
active
11315844
ABSTRACT:
Mass intensity values, isotopic ratios and exact mass differences between isotopes may be obtained and analyzed to determine if there are one or more masses of interest. In one implementation, a method will look among the mass intensity values for peaks of interest. The mass intensity values, representative of isotopic signatures, will be compared to a criteria in order to determine which of the masses are of interest. Although the invention is not so limited, examples of such criteria include mass intensity values above a specified threshold, within a certain ratio of another mass intensity value, and/or separation between the masses themselves. Optionally, a tolerance may be applied to the criteria. If masses are found to be of interest, MS/MS can automatically be triggered for one or all of the masses of interest, when an analyzing system such as an LC-MS-MS, GC-MS-MS or MALDI-MS-MS system is used.
REFERENCES:
patent: 6147344 (2000-11-01), Annis et al.
patent: 6207861 (2001-03-01), Nash et al.
patent: 6329146 (2001-12-01), Crooke et al.
patent: 6475807 (2002-11-01), Geysen et al.
patent: 7112784 (2006-09-01), Bateman et al.
patent: 2001/0019107 (2001-09-01), Maekawa et al.
patent: 2003/0001090 (2003-01-01), Ranasinghe et al.
patent: WO 89/12312 (1989-12-01), None
Castro-Perez Jose
Jones Christopher
Plumb Robert
Janiuk Anthony J.
Nguyen Kiet T.
Rose Jamie H.
Waters Investments Limited
LandOfFree
System and method for isotopic signature and mass analysis does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with System and method for isotopic signature and mass analysis, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and System and method for isotopic signature and mass analysis will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3786169