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: 156 511 693 patent documents

This week's update (14/06/2024 12:00 CET):

200 241 new documents added

1 026 356 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 0189799 B1 19880817 - PROCESS FOR SEPARATING CESIUM IONS FROM AQUEOUS SOLUTIONS

Title (en)

PROCESS FOR SEPARATING CESIUM IONS FROM AQUEOUS SOLUTIONS

Publication

EP 0189799 B1 19880817 (DE)

Application

EP 86100612 A 19860117

Priority

DE 3502986 A 19850130

Abstract (en)

[origin: US4790960A] A process for the stripping of cesium ions from an aqueous solution in which a precipitation agent is added to the aqueous solution and the resulting precipitate, containing the CS+ ions is stripped from the solution. Sodium or lithium tetraphenylborates, carrying electron-attracting substituents on the phenyl rings are employed as precipitation agent.

IPC 1-7

G21F 9/10

IPC 8 full level

G21F 9/10 (2006.01)

CPC (source: EP US)

G21F 9/10 (2013.01 - EP US)

Designated contracting state (EPC)

DE FR GB IT

DOCDB simple family (publication)

EP 0189799 A1 19860806; EP 0189799 B1 19880817; DE 3502986 A1 19860731; DE 3660570 D1 19880922; US 4790960 A 19881213

DOCDB simple family (application)

EP 86100612 A 19860117; DE 3502986 A 19850130; DE 3660570 T 19860117; US 82432686 A 19860130