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:
Oct. 06, 2026
Filed:
Mar. 29, 2021
Applicant:
Micromass Uk Limited, Wilmslow, GB;
Inventors:
Martin Raymond Green, Bowdon, GB;
Keith George Richardson, High Peak, GB;
Assignee:
Micromass UK Limited, Wilmslow, GB;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01J 49/06 (2006.01); H01J 49/00 (2006.01); H01J 49/42 (2006.01);
U.S. Cl.
CPC ...
H01J 49/063 (2013.01); H01J 49/0045 (2013.01); H01J 49/4215 (2013.01);
Abstract
A method of mass spectrometry is disclosed in which one or more AC excitation voltage waveforms are applied to electrodes of an ion guide to radially excite and thereby attenuate ions having mass to charge ratios within respective mass to charge ratio windows. The AC excitation voltage waveforms are varied with time such that ions having different mass to charge ratios are attenuated with different attenuation time profiles. Plural AC excitation voltage waveforms may be varied with time to provide unique mass to charge ratio encoding.