U.S. patent number RE40,632 [Application Number 11/073,394] was granted by the patent office on 2009-02-03 for mass spectrometer system including a double ion guide interface and method of operation. This patent grant is currently assigned to Thermo Finnigan LLC.. Invention is credited to Jean-Jacques Dunyach, Alan E. Schoen, Keqi Tang.
United States Patent | RE40,632 |
Tang , et al. | February 3, 2009 |
**Please see images for: ( Certificate of Correction ) ** |
There is described an interface for delivering ions generated in an ion source into a mass analyzer in a chamber under vacuum pressure. In particular, the interface employs two consecutive ion guides operated to dissociate adduct ions formed in the ion source or high pressure regions of the interface between the ion source and the mass analyzer, thus improving the limit of detection or limit of quantitation of the mass analyzer by increasing the analyte ion current. The questions raised in reexamination request no. 90/007,724, filed Sep. 16, 2005 have been considered and the results thereof are reflected in this reissue patent which constitutes the reexamination certificate required by 35 U.S.C. 307 as provided in 37 CFR 1.570(e), for ex parte reexaminations, or the reexamination certificate required by 35 U.S.C. 316 as provided in 37 CFR 1.997(e) for inter partes reexaminations.
Inventors: | Tang; Keqi (Richland, WA), Dunyach; Jean-Jacques (San Jose, CA), Schoen; Alan E. (Saratoga, CA) |
---|---|
Assignee: | Thermo Finnigan LLC. (San Jose,
CA) |
Family ID: | 27037405 |
Appl. No.: | 11/073,394 |
Filed: | March 4, 2005 |
Application Number | Filing Date | Patent Number | Issue Date | ||
---|---|---|---|---|---|
09454273 | Dec 3, 1999 | ||||
Reissue of: | 09715815 | Nov 16, 2000 | 06528784 | Mar 4, 2003 | |
Current U.S. Class: | 250/282; 250/281; 250/288 |
Current CPC Class: | H01J 49/044 (20130101); H01J 49/063 (20130101); H01J 49/067 (20130101) |
Current International Class: | B01D 59/44 (20060101); H01J 49/00 (20060101) |
Field of Search: | ;250/287,288,281,282 |
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