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. 16, 2023
Filed:
Jun. 03, 2021
Shimadzu Corporation, Kyoto, JP;
Yiming Wang, Shanghai, CN;
Wenjian Sun, Shanghai, CN;
SHIMADZU CORPORATION, Kyoto, JP;
Abstract
A mass spectrometer includes a first vacuum chamber, which is provided with an atmospheric pressure interface communicating with an external atmospheric pressure environment and to a first vacuum pump, the range of working pressure P1 of the first vacuum chamber being P1>30 mbar; a second vacuum chamber, which is connected to the first vacuum chamber by means of a vacuum interface to receive the analyte from the first vacuum chamber and to a second vacuum pump, the range of working pressure P2 of the second vacuum chamber being 0.5 mbar≤P2≤30 mbar; and a third vacuum chamber, which is connected to the second vacuum chamber by means of a vacuum interface to receive the analyte from the second vacuum chamber and to a third vacuum pump, the first vacuum pump or the second vacuum pump being used as a forepump of the third vacuum pump.