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:
Feb. 16, 2010
Filed:
Apr. 23, 2004
Applicants:
Edward James Morton, Guildford, GB;
Russell David Luggar, Dorking, GB;
Paul DE Antonis, Horsham, GB;
Inventors:
Edward James Morton, Guildford, GB;
Russell David Luggar, Dorking, GB;
Paul De Antonis, Horsham, GB;
Assignee:
Rapiscan Systems, Inc., Hawthorne, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01J 35/10 (2006.01);
U.S. Cl.
CPC ...
Abstract
The present invention is directed to an X-ray tube that has an electron source in the form of a cathode and an anode within a housing. The anode is a thin film anode, so that most of the electrons which do not interact with it to produce X-rays pass directly through it. A retardation electrode is located behind the anode and is held at a potential which is negative with respect to the anode and slightly positive with respect to the cathode.