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:
Jun. 10, 2003
Filed:
Jan. 10, 2002
Applicant:
Inventors:
Mahadeva P. Sinha, Temple City, CA (US);
Mark V. Wadsworth, Sierra Madre, CA (US);
Assignee:
California Institute of Technology, Pasadena, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01J 3/7244 ; H01J 4/930 ;
U.S. Cl.
CPC ...
H01J 3/7244 ; H01J 4/930 ;
Abstract
An electronic ion detection system which may detect low-energy charge particles such as ions from, for example, a mass spectrometer system. The capacitive sensors are located with two plates which are separated by an insulator. The ions which impinge on one of the plates cause charge to be created. That charge may be amplified and then handled by a charge mode amplifier such as a CCD sensor. That CCD sensor may operate using fill and spill operations.