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. 12, 2000
Filed:
Aug. 06, 1998
Applicant:
Inventor:
Morio Ishihara, Osaka, JP;
Assignee:
JEOL Ltd., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
H01J / ;
U.S. Cl.
CPC ...
250287 ; 250282 ;
Abstract
There is disclosed a time-of-flight (TOF) mass spectrometer capable of making a spectral measurement quickly and efficiently and making effective use of ionized samples. The instrument has a pulse-generating portion for producing appropriate pulse sequences. An arithmetic unit Fourier-transforms a resultant spectrum from a detector to find W(.omega.). The arithmetic unit Fourier-transforms a pulse sequence signal from the pulse-generating portion to find H(.omega.). The arithmetic unit calculates Y(.omega.)=W(.omega.)/H(.omega.) and takes the inverse Fourier transform of the calculated Y(.omega.).