Global Patent Index - EP 0902963 B1

EP 0902963 B1 2002-09-04 - AXIAL EJECTION IN A MULTIPOLE MASS SPECTROMETER

Title (en)

AXIAL EJECTION IN A MULTIPOLE MASS SPECTROMETER

Title (de)

MULTIPOLMASSENSPEKTROMETER MIT AXIALEM AUSSTOSS

Title (fr)

SPECTROMETRE DE MASSE MULTIPOLAIRE A EJECTION AXIALE

Publication

EP 0902963 B1 (EN)

Application

EP 97923686 A

Priority

  • CA 9700381 W
  • US 65695496 A

Abstract (en)

[origin: WO9747025A1] A method of operating a mass spectrometer having an elongated multipole rod set, in which a two-dimensional RF field radially contains trapped ions in a mass to charge range of interest, and in which the ions are contained axially by a barrier field on an end lens and to which a low voltage DC is applied. Trapped ions are axially mass selectively ejected by taking advantage of the mixing of the degrees of freedom induced by the fringing fields and other anti-harmonicities in the vicinity of the end lens. Thus, ions can be mass selectively ejected at the exit end at the same time as ions are being admitted into the entrance end of the rod set, thereby taking better advantage of the ion flux from a continuous ion source. The axial mass selective ejection is performed by applying an auxiliary AC voltage to the end lens, and by scanning either the auxiliary AC voltage or the RF voltage on the rod set. Trapped ions can be concentrated near the exit lens by applying an axial field in the direction of the lens, or can be depleted by applying the axial field in the opposite direction. The axial field can be oscillated to dissociate trapped ions.

IPC 1-7 (main, further and additional classification)

H01J 49/42

IPC 8 full level (invention and additional information)

H01J 49/42 (2006.01)

CPC (invention and additional information)

H01J 49/427 (2013.01); H01J 49/004 (2013.01); H01J 49/4225 (2013.01)

Designated contracting state (EPC)

DE GB

EPO simple patent family

WO 9747025 A1 19971211; AU 2946197 A 19980105; AU 718774 B2 20000420; CA 2256028 A1 19971211; CA 2256028 C 20070116; DE 69715190 D1 20021010; DE 69715190 T2 20030430; EP 0902963 A1 19990324; EP 0902963 B1 20020904; JP 2000510638 A 20000815; JP 3818671 B2 20060906

INPADOC legal status


2017-07-31 [PG25 GB] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

- Ref Country Code: GB

- Free text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION

- Effective date: 20170601

2017-06-21 [REG GB PE20] PATENT EXPIRED AFTER TERMINATION OF 20 YEARS

- Expiry date: 20170601

2017-06-02 [REG DE R071] EXPIRY OF RIGHT

- Document: DE 69715190

2016-10-31 [PGFP DE] POSTGRANT: ANNUAL FEES PAID TO NATIONAL OFFICE

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- Payment date: 20160628

- Year of fee payment: 20

2016-07-29 [PGFP GB] POSTGRANT: ANNUAL FEES PAID TO NATIONAL OFFICE

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- Payment date: 20160627

- Year of fee payment: 20

2003-08-27 [26N] NO OPPOSITION FILED

- Effective date: 20030605

2002-10-10 [REF] CORRESPONDS TO:

- Document: DE 69715190 20021010

2002-09-04 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: B1

- Designated State(s): DE GB

2002-09-04 [REG GB FG4D] EUROPEAN PATENT GRANTED

2002-07-17 [RBV] DESIGNATED CONTRACTING STATES (CORRECTION)

- Designated State(s): DE GB

2001-09-05 [17Q] FIRST EXAMINATION REPORT

- Effective date: 20010719

1999-03-24 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 19981224

1999-03-24 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): DE GB

1999-03-24 [AK] DESIGNATED CONTRACTING STATES:

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- Designated State(s): AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE