GPI coverage and content

You can use Global Patent Index (GPI) to carry out detailed searches in the EPO's worldwide bibliographic (DOCDB), legal event (INPADOC) and full-text data sets, and download or visualise the search results for statistical analysis.

Current content: 159 823 134 patent documents

This week's update (15/11/2024 12:00 CET):

143 307 new documents added

1 003 170 documents amended

GPI key values

Run regular monitoring (e.g. monthly or quarterly) of technical areas or companies

Use built-in charts to visualise technical trends and patenting activity of companies

Choose the data you want to see and download to focus on what you are interested in

Run data quality assessments to measure the risk of incomplete search results

EP 0126668 B1 19870819 - ROTATING ANODE X-RAY TUBE

Title (en)

ROTATING ANODE X-RAY TUBE

Publication

EP 0126668 B1 19870819 (FR)

Application

EP 84400848 A 19840426

Priority

FR 8307610 A 19830506

Abstract (en)

[origin: US4651336A] In an X-ray tube comprising a rotating anode mounted on magnetic bearings, the flow of anode current within the tube takes place without any contact by means of a stationarily fixed hollow anode in which is placed a cathode coupled rotationally to the rotating anode. The hollow anode is associated with heating means and the cathode is heated by thermal radiation within the hollow anode.

IPC 1-7

H01J 35/10

IPC 8 full level

H01J 35/10 (2006.01)

CPC (source: EP US)

H01J 35/103 (2013.01 - EP US)

Designated contracting state (EPC)

CH DE GB LI NL

DOCDB simple family (publication)

FR 2545649 A1 19841109; FR 2545649 B1 19851213; DE 3465550 D1 19870924; EP 0126668 A1 19841128; EP 0126668 B1 19870819; US 4651336 A 19870317

DOCDB simple family (application)

FR 8307610 A 19830506; DE 3465550 T 19840426; EP 84400848 A 19840426; US 60481584 A 19840427