Radiant energy – Ionic separation or analysis – Cyclically varying ion selecting field means
Reexamination Certificate
2006-03-28
2006-03-28
Lee, John R. (Department: 2881)
Radiant energy
Ionic separation or analysis
Cyclically varying ion selecting field means
C250S282000
Reexamination Certificate
active
07019290
ABSTRACT:
A system and method are described for producing a modifiable fringing field in a multipole instrument, such as a mass spectrometer or an ion guide. The system includes a conductor arrangement having a first pole pair, a second pole pair and an end device for allowing ions to enter or exit the conductor arrangement. A first power supply provides a first voltage to the first pole pair, such that the application of the first voltage results in a fringing field near the end device. An end device power supply provides an end device voltage to the end device for modifying the fringing field to facilitate the entrance or exit of the ions.
REFERENCES:
patent: 2939952 (1960-06-01), Helmut et al.
patent: 3617736 (1971-11-01), Barnett et al.
patent: 3699330 (1972-10-01), McGinnis
patent: 5179278 (1993-01-01), Douglas
patent: 5206506 (1993-04-01), Kirchner
patent: 5572035 (1996-11-01), Franzen
patent: 5576540 (1996-11-01), Jolliffe
patent: 5689111 (1997-11-01), Dresch et al.
patent: 5767513 (1998-06-01), Dressler et al.
patent: 5847386 (1998-12-01), Thomson et al.
patent: 5942752 (1999-08-01), Wang
patent: 6020586 (2000-02-01), Dresch et al.
patent: 6028308 (2000-02-01), Hager
patent: 6075244 (2000-06-01), Baba et al.
patent: 6093929 (2000-07-01), Javahery et al.
patent: 6111250 (2000-08-01), Thomson et al.
patent: 6114691 (2000-09-01), Cousins
patent: 6177668 (2001-01-01), Hager
patent: 6194717 (2001-02-01), Hager
patent: 6417511 (2002-07-01), Russ et al.
patent: 6483109 (2002-11-01), Reinhold et al.
patent: 6504148 (2003-01-01), Hager
patent: 6525312 (2003-02-01), Cousins
patent: 6528784 (2003-03-01), Tang et al.
patent: 6534764 (2003-03-01), Verentchikov et al.
patent: 6700116 (2004-03-01), Taniguchi
patent: 6700120 (2004-03-01), Hager
patent: 6703607 (2004-03-01), Stott et al.
patent: 6713757 (2004-03-01), Tanner et al.
patent: 6720554 (2004-04-01), Hager
patent: 6723986 (2004-04-01), Kernan et al.
patent: 6744043 (2004-06-01), Loboda
patent: 6797950 (2004-09-01), Schwartz et al.
patent: 6815667 (2004-11-01), Tanner et al.
patent: 6815673 (2004-11-01), Plomley et al.
Dawson, P.H., ed. “Fringing Fields and Other Imperfections” in Quadrupole Mass Spectrom., Elsevier, Amsterdam, 1976, pp. 95-119.
Hager, James W., “Performance Optimization and Fringing Field Modifications of a 24-mm Long RF-only Quadrupole Mass Spectrometer”, Rapid Communications in Mass Spectrometry, 13, 740-747 (1999).
Hunter, Kevin L. and Bruce J. McIntosh, “An Improved Model of the Fringing Fields Of A Quadrupole Mass Filter”, International Journal of Mass Spectrometry and Ion Processes, 87 (1989) 157-164.
Hager James W.
Londry Frank A.
Applera Corporation
Bereskin & Parr
MDS Inc.
Vanore David A.
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