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:
Aug. 19, 2003
Filed:
Jul. 31, 2000
Applicant:
Inventors:
Patrick D. Perkins, Sunnyvale, CA (US);
Jeffrey T. Kernan, Santa Cruz, CA (US);
Assignee:
Agilent Technologies, Inc., Palo Alto, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G21F 5/02 ; B01D 5/944 ; B05D 5/12 ; C23C 1/600 ; C23C 1/634 ;
U.S. Cl.
CPC ...
G21F 5/02 ; B01D 5/944 ; B05D 5/12 ; C23C 1/600 ; C23C 1/634 ;
Abstract
The present invention relates to a mass spectrometer that includes an ionization source having a chamber for ionizing a fluid sample. The ionization chamber has surfaces to reduce the overall interaction with reactive samples. The inner surface walls of the ionization chamber may be formed from an inorganic conductive nitride or disulfide material or may be applied to a substrate as a coating. The invention also includes a method for reducing the interaction of a reactive analyte with the inner wall of the chamber by application or coating the inner wall of the chamber with an inert conductive material.