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:
May. 27, 2008
Filed:
Sep. 30, 2005
Mingda Wang, Fremont, CA (US);
Doris Lee, Alamo, CA (US);
Kenneth Newton, Concord, CA (US);
Steve Schachterle, Martinez, CA (US);
Mingda Wang, Fremont, CA (US);
Doris Lee, Alamo, CA (US);
Kenneth Newton, Concord, CA (US);
Steve Schachterle, Martinez, CA (US);
Varian, Inc., Palo Alto, CA (US);
Abstract
A desired ion is isolated in an ion trapping volume by applying an ion isolation signal to a plurality of ions in the ion trapping volume, including the desired ion to be retained in the ion trapping volume and an undesired ion to be ejected from the ion trapping volume. The ion isolation signal includes a plurality of signal components spanning a frequency range. The plurality of signal components includes a first component having a frequency near a secular frequency of the desired ion, and an adjacent component having a frequency adjacent to the frequency of the first component. The first component has an amplitude greater than the amplitude of the adjacent component.