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. 23, 2018
Filed:
May. 11, 2015
Applicant:
Thermo Finnigan Llc, San Jose, CA (US);
Inventors:
Philip M. Remes, San Jose, CA (US);
Jae C. Schwartz, Gilroy, CA (US);
Assignee:
Thermo Finnigan LLC, San Jose, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01J 49/42 (2006.01); H01J 49/00 (2006.01);
U.S. Cl.
CPC ...
H01J 49/427 (2013.01); H01J 49/0027 (2013.01); H01J 49/0031 (2013.01); H01J 49/423 (2013.01); H01J 49/4205 (2013.01);
Abstract
A mass spectrometer includes a radio frequency ion trap and a controller. The controller is configured to cause an ion population to be injected into the radio frequency ion trap and supply an isolation waveform to the radio frequency ion trap. The isolation waveform has at least one notch at a target mass-to-charge ratio and a frequency profile determined to eject unwanted ions at a plurality of frequencies in a substantially similar amount of time.