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: 159 212 084 patent documents

This week's update (18/10/2024 12:00 CET):

125 820 new documents added

1 120 546 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 0104585 B1 19860924 - POT CORE TRANSFORMER

Title (en)

POT CORE TRANSFORMER

Publication

EP 0104585 B1 19860924 (EN)

Application

EP 83109299 A 19830920

Priority

US 42233182 A 19820923

Abstract (en)

[origin: EP0104585A1] One or more fixed inductors may be combined in a single transformer structure by shunting a portion of the primary flux of the transformer by means of a flat member (65) high permeability or by providing an air gap (63) in the path of the primary flux.

IPC 1-7

H01F 17/04; H01F 31/06

IPC 8 full level

H01F 17/04 (2006.01); H01F 38/08 (2006.01)

CPC (source: EP)

H01F 17/043 (2013.01); H01F 38/08 (2013.01)

Designated contracting state (EPC)

DE FR GB IT NL SE

DOCDB simple family (publication)

EP 0104585 A1 19840404; EP 0104585 B1 19860924; DE 3366470 D1 19861030

DOCDB simple family (application)

EP 83109299 A 19830920; DE 3366470 T 19830920