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:
Jul. 31, 2012
Filed:
Sep. 17, 2010
Applicants:
Thomas Ferger, Fuerth, DE;
Sven Fritzler, Shanghai, CN;
Dieter Matuszok, Weisendorf, DE;
Inventors:
Assignee:
Siemens Aktiengesellschaft, Munich, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01J 35/06 (2006.01);
U.S. Cl.
CPC ...
Abstract
A cathode has a cathode head in which is arranged at least one emitter that emits electrons upon application of a heating voltage. At least one series resistor is connected in the voltage feed to at least one emitter. The use of such a cathode in an x-ray tube enables x-ray exposures with a high quality.