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.

Date of Patent:
Dec. 10, 2019

Filed:

Feb. 17, 2016
Applicant:

Academia Sinica, Taipei, TW;

Inventors:

Chung-Hsuan Chen, Taipei, TW;

I-Chung Lu, Taichung, TW;

Ming-Lee Chu, Xizhi, TW;

Assignee:

Academia Sinica, Taipei, TW;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01J 49/42 (2006.01); H01J 49/16 (2006.01); H01J 49/02 (2006.01);
U.S. Cl.
CPC ...
H01J 49/429 (2013.01); H01J 49/161 (2013.01); H01J 49/022 (2013.01); H01J 49/164 (2013.01);
Abstract

An ion trap mass spectrometer and methods for obtaining a mass spectrum of ions by scanning an RF frequency applied to the linear ion trap for mass selective ejection of the ions by using two power amplifiers to apply opposite phases of the RF to x and y electrodes.


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