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. 15, 1987
Filed:
Oct. 03, 1985
Applicant:
Inventor:
Minoru Uchida, Katsuta, JP;
Assignee:
Hitachi, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01J / ; H01J / ;
U.S. Cl.
CPC ...
250296 ; 250298 ; 250292 ; 2503 / ; 250281 ;
Abstract
When AC voltages in-phase to each other are superposed on the DC voltages applied to a pair of opposing electrodes of a quadrupole lens, the waveform of the intensity of the ion beam is disturbed only if the central orbit of ions is deviated from the center of the quadrupole lens. In view of this, adjustment of the central orbit of ions is facilitated with the help of variations in the waveform of the intensity of the ion beam while superposing the AC voltages in-phase to each other on the DC voltages applied thereto.
Uchida, Minoru. (1987). Mass spectrometer (U.S. Patent No. 4694169). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4694169
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile