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. 07, 2002
Filed:
Aug. 08, 2000
Applicant:
Inventor:
Eizo Kawato, Cheadle, GB;
Assignee:
Shimadzu Research Laboratory (Europe) Ltd, Manchester, GB;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01J 4/940 ;
U.S. Cl.
CPC ...
H01J 4/940 ;
Abstract
A time-of-flight mass spectrometer includes a gridless dual-stage ion reflector ( ) having a high-field first stage ( ) and a low-field second stage (19). The ratio of the electric field strength in the low-field second stage (19) to the electric field strength in the high-field first stage ( ) is 0.55, and may be in the range 0.35 to 0.07.