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:
Sep. 06, 2022
Filed:
Sep. 06, 2018
Applicant:
Shimadzu Corporation, Kyoto, JP;
Inventor:
Masaru Nishiguchi, Kyoto, JP;
Assignee:
SHIMADZU CORPORATION, Kyoto, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01J 49/42 (2006.01); H01J 49/06 (2006.01);
U.S. Cl.
CPC ...
H01J 49/4215 (2013.01); H01J 49/063 (2013.01);
Abstract
A quadrupole mass spectrometer includes: a quadrupole mass filter including a pre-rod; an ionization chamber; and an ion optical system that guides ions generated in the ionization chamber to the pre-rod of the quadrupole mass filter, wherein: a potential of an exit side electrode of the ion optical system is lower than a potential of the ionization chamber and a potential of the pre-rod of the quadrupole mass filter; and there is no structure that has a higher potential than the exit side electrode and decelerates the ions between the exit side electrode and the pre-rod.