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:
Mar. 10, 1998
Filed:
Jul. 12, 1996
Applicant:
Inventors:
Edward Aisawa, Sunnyvale, CA (US);
James L Bertsch, Palo Alto, CA (US);
J Michael Flanagan, Sunnyvale, CA (US);
Darrell L Gourley, San Francisco, CA (US);
Val C Robinson, Morgan Hill, CA (US);
Joseph Vandenburg, Mountain View, CA (US);
Assignee:
Hewlett-Packard Company, Palo Alto, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01J / ;
U.S. Cl.
CPC ...
250288 ;
Abstract
The invention relates to an ionization chamber. More particularly, the invention relates to a mass spectrometer system having an ionization chamber incorporating a corona needle removable from outside the closed ionization chamber. In preferred embodiments, the corona needle is self-positioning and engages and disengages operational or safety electrical connections.