(19)
(11) EP 2 212 903 A2

(12)

(88) Date of publication A3:
26.11.2009

(43) Date of publication:
04.08.2010 Bulletin 2010/31

(21) Application number: 08838087.8

(22) Date of filing: 23.09.2008
(51) International Patent Classification (IPC): 
H01J 49/10(2006.01)
H01J 49/14(2006.01)
(86) International application number:
PCT/US2008/077365
(87) International publication number:
WO 2009/048739 (16.04.2009 Gazette 2009/16)
(84) Designated Contracting States:
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR
Designated Extension States:
AL BA MK RS

(30) Priority: 10.10.2007 US 869980
10.10.2007 US 869978
06.02.2008 US 26799

(71) Applicant: MKS Instruments, Inc.
Andover, MA 01810 (US)

(72) Inventors:
  • ROBINSON, Timothy, Roger
    Burland CW5 8QB (GB)
  • ATTWOOD, Mark
    Cupertino CA 95014 (US)
  • CHEN, Xing
    Lexington MA 02421 (US)
  • HOLBER, William, M.
    Winchester MA 01890 (US)
  • LONGSON, Mark, Philip
    Waterhouses ST10 3HG (GB)
  • PALK, Jonathan, Henry
    Sandbach CW11 3BZ (GB)
  • SHAJII, Ali
    Canton MA 02021 (US)
  • SMITH, John, A.
    North Andover MA 01845 (US)

(74) Representative: Lang, Johannes 
Patent- und Rechtsanwälte Bardehle Pagenberg Dost Altenburg Geissler Galileiplatz 1
81679 München
81679 München (DE)

   


(54) CHEMICAL IONIZATION REACTION OR PROTON TRANSFER REACTION MASS SPECTROMETRY WITH A QUADRUPOLE OR TIME-OF-FLIGHT MASS SPECTROMETER