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. 17, 2002
Filed:
Aug. 18, 1999
Applicant:
Inventor:
Johannes Schwieters, Ganderkesee, DE;
Assignee:
Finnigan MAT GmbH, , DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01J 3/7244 ;
U.S. Cl.
CPC ...
H01J 3/7244 ;
Abstract
A Faraday collector for measuring ion currents in mass spectrometers, having a cup ( ) for capturing the ions, an entrance slit ( ) and a secondary electron diaphragm ( ) is configured in a special way. The cup ( ) consists of two half-shells ( ) of solid graphite and his held in a frame ( ) with insulators ( ).