Patent · US Active

Cathode

US8232714B2 · kind B2 · utility

0Cited by

7References

6Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Thomas Ferger · Ergolding, DE
Sven Fritzler · Erlangen, DE
Dieter Matuszok · Weisendorf, DE

Key dates

Filing date	Sep 17, 2010
Grant date	Jul 31, 2012
Priority date	—
Expiry date	Sep 17, 2030

Classification

Technology area (CPC H)Electricity
CPC primaryH05G1/46
WIPO fieldMedical technology
WIPO sectorInstruments

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.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.