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. 02, 2000
Filed:
Oct. 31, 1997
Applicant:
Inventor:
Morio Ishihara, Osaka, JP;
Assignee:
Jeol Ltd., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
B01D / ; H01J / ;
U.S. Cl.
CPC ...
250287 ; 250281 ;
Abstract
There is disclosed a mass spectrometer capable of performing a mass analysis by accelerating ions to high energies. This spectrometer has a drift zone consisting of a conductive tube located in the ion path between the ion source and the analyzer. A voltage is applied to the drift zone from a voltage source via a switch such that the voltage applied to the drift zone is switched between a low potential V and an accelerating voltage Va of several kilovolts.