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:
Dec. 19, 2023
Filed:
Dec. 19, 2018
Shimadzu Corporation, Kyoto, JP;
Masaru Nishiguchi, Kyoto, JP;
SHIMADZU CORPORATION, Kyoto, JP;
Abstract
An ion guide () provided in a first intermediate vacuum chamber includes six rod electrodes (to) and a voltage generation unit. The six rod electrodes (to) are in a hexapole arrangement on the ion incident side, and the two rod electrodes (and) are tilted with respect to the Z-axis in a manner approaching a central axis () as they progress in the ion transport direction, so that the four rod electrodes (, and) are in a quadrupole arrangement. The voltage generation unit applies radio-frequency voltages ±V cos ωt whose phases are inverted to each other between adjacent rod electrodes of the six rod electrodes (to) around the central axis (), applies a DC voltage Uto the four electrodes (, and) by which ions pass through them in an excellent manner, and applies a DC voltage Udifferent from Uto the other two rod electrodes (and).