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:
Feb. 22, 2011
Filed:
Dec. 20, 2006
Applicant:
LI Ding, Sale, GB;
Inventor:
Li Ding, Sale, GB;
Assignee:
Shimadzu Research Laboratory (Europe) Limited, Manchester, GB;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
H01J 49/04 (2006.01);
U.S. Cl.
CPC ...
Abstract
A mass spectrometer has a pulsed ion source, a first ion trap () for trapping ions generated by the pulsed ion source and for locating trapped ions for subsequent ejection from the first ion trap. A pulse of cooling gas is introduced into the first ion trap () at a peak pressure suitable for enabling the first ion trap () to trap ions. A turbomolecular pump () reduces the pressure of cooling gas before the trapped ions are ejected from the first ion trap () towards a second ion trap () for analysis. The pulsed ion source has a sample plate () which forms an end wall of the first ion trap ().