(19)
(11) EP 1 580 790 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
24.05.2006 Bulletin 2006/21

(43) Date of publication A2:
28.09.2005 Bulletin 2005/39

(21) Application number: 04029441.5

(22) Date of filing: 25.06.2002
(51) International Patent Classification (IPC): 
H01J 49/04(2006.01)
H01J 49/40(2006.01)
 H01J 49/16(2006.01)
H01J 49/42(2006.01)
(84) Designated Contracting States:
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR
Designated Extension States:
AL LT LV MK RO SI

(30) Priority: 25.06.2001 GB 0115409
09.08.2001 GB 0119449
17.08.2001 GB 0120111
17.08.2001 GB 0120121

(62) Application number of the earlier application in accordance with Art. 76 EPC:
02254441.5 / 1271611

(71) Applicant: Micromass UK Limited
Manchester M22 5PP (GB)

(72) Inventors:
  • Bateman, Robert Harold
    Knutsford Cheshire WA16 8NP (GB)
  • Pringle, Steve
    Hoddlesden Darwen BB3 3PS (GB)
  • Giles, Kevin
    Stockport, Cheshire SK6 5DW (GB)

(74) Representative: Jeffrey, Philip Michael 
Frank B. Dehn & Co. St Bride's House 10 Salisbury Square
London EC4Y 8JD
London EC4Y 8JD (GB)

   


(54) Mass spectrometer


(57) An ion guide 1 is disclosed wherein a travelling DC wave is passed along the length of the ion guide 1 so that ions exit the ion guide 1 having substantially the same velocity.







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