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: 155 263 406 patent documents

This week's update (19/04/2024 12:00 CET):

215 613 new documents added

1 342 057 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 0779376 B1 20000126 - Plasma carburizing of metallic workpieces

Title (en)

Plasma carburizing of metallic workpieces

Title (de)

Verfahren zur Plasmaaufkohlung metallischer Werkstücke

Title (fr)

Carburation par plasma de pièces métalliques

Publication

EP 0779376 B1 20000126 (DE)

Application

EP 96118592 A 19961120

Priority

DE 19547131 A 19951216

Abstract (en)

[origin: EP0779376A1] In plasma carburisation of metal work pieces in a furnace containing an atmosphere of carbon carrier under plasma carburisation conditions to produce pure C, a mixture of methane and propane is used as C carrier.

IPC 1-7

C23C 8/38

IPC 8 full level

C23C 8/38 (2006.01)

CPC (source: EP US)

C23C 8/38 (2013.01 - EP US)

Designated contracting state (EPC)

AT CH DE FR GB IT LI

DOCDB simple family (publication)

EP 0779376 A1 19970618; EP 0779376 B1 20000126; EP 0779376 B2 20021218; AT E189271 T1 20000215; DE 19547131 A1 19970619; DE 59604291 D1 20000302; US 5851314 A 19981222

DOCDB simple family (application)

EP 96118592 A 19961120; AT 96118592 T 19961120; DE 19547131 A 19951216; DE 59604291 T 19961120; US 76628296 A 19961213