The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 04, 2005
Filed:
Oct. 28, 2003
Robert Harold Bateman, Knutsford, GB;
Kevin Giles, Altrincham, GB;
John Brian Hoyes, Stockport, GB;
Steve Pringle, Hoddlesden, GB;
Jason Lee Wildgoose, Stockport, GB;
Robert Harold Bateman, Knutsford, GB;
Kevin Giles, Altrincham, GB;
John Brian Hoyes, Stockport, GB;
Steve Pringle, Hoddlesden, GB;
Jason Lee Wildgoose, Stockport, GB;
Micromass UK Limited, Manchester, GB;
Abstract
A mass spectrometer is disclosed comprising a mass filter for separating ions according to their mass to charge ratio. The mass filter comprises a plurality of electrodes wherein ions are radially confined within the mass filter by the application of AC or RF voltages to the electrodes. One or more transient DC voltages or one or more transient DC voltage waveforms are progressively applied to the electrodes so that ions having a certain mass to charge ratio are separated from other ions having different mass to charge ratios which remain radially confined within the mass filter.