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. 07, 1993
Filed:
Sep. 23, 1992
Applicant:
Inventors:
Alex Mordehai, Ithaca, NY (US);
John D Henion, Trumansburg, NY (US);
Assignee:
Cornell Research Foundation, Inc., Ithaca, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01J / ; H01J / ;
U.S. Cl.
CPC ...
250289 ; 250292 ; 250291 ; 250290 ;
Abstract
An ion trap mass spectrometer includes an ion trap region separated from an electron multiplier region by a baffle, and separate turbomolecular pumps for pumping each region to a different pressure level. The ion trap region can therefore be pumped to a higher pressure level than ca be used for the electron multiplier region, and the result and increase in pressure of damping gas in the ion trap region increases the sensitivity of the device.