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Current content: 157 117 910 patent documents

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139 301 new documents added

1 340 825 documents amended

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EP 0235619 B1 19890816 - GLOW CATHODE FOR AN X-RAY TUBE

Title (en)

GLOW CATHODE FOR AN X-RAY TUBE

Publication

EP 0235619 B1 19890816 (DE)

Application

EP 87101758 A 19870209

Priority

DE 3605540 A 19860221

Abstract (en)

[origin: EP0235619A1] 1. Glow cathode for an X-ray tube having an electrically heated band emitter provided with at least one slit which consists of refractory material capable of emitting electrons, characterised in that the band emitter (7) is made up of at least two layers (20 to 22).

IPC 1-7

H01J 35/06

IPC 8 full level

H01J 35/06 (2006.01)

CPC (source: EP US)

H01J 35/064 (2019.04 - EP US)

Designated contracting state (EPC)

CH DE FR LI

DOCDB simple family (publication)

EP 0235619 A1 19870909; EP 0235619 B1 19890816; DE 3760462 D1 19890921; JP S62135347 U 19870826

DOCDB simple family (application)

EP 87101758 A 19870209; DE 3760462 T 19870209; JP 2125587 U 19870216