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: 157 484 516 patent documents

This week's update (26/07/2024 12:00 CET):

147 225 new documents added

921 612 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 0997918 B1 20040714 - Preparation of a magnetic layer

Title (en)

Preparation of a magnetic layer

Title (de)

Herstellung einer Magnetschicht

Title (fr)

Préparation d'une couche magnétique

Publication

EP 0997918 B1 20040714 (EN)

Application

EP 99201371 A 19990429

Priority

EP 99201371 A 19990429
EP 98203868 A 19981026

Abstract (en)

[origin: EP0997918A1] A process is disclosed for the preparation of semi-soft or soft magnetic layers. The process involves chemical reduction in aqueous medium of one or more types of metal ions including nickel ions, washing the resulting dispersion of metal particles, and coating this dispersion onto a support. The resulting magnetic layers can be used in an anti-theft system. <IMAGE>

IPC 1-7

H01F 41/02; H01F 1/00; G08B 13/24

IPC 8 full level

H01F 1/00 (2006.01); H01F 41/16 (2006.01)

CPC (source: EP)

H01F 1/0027 (2013.01); H01F 41/16 (2013.01)

Designated contracting state (EPC)

BE DE FR GB

DOCDB simple family (publication)

EP 0997918 A1 20000503; EP 0997918 B1 20040714

DOCDB simple family (application)

EP 99201371 A 19990429