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 0306474 B1 19910417 - METHOD OF POST-LIMING SKINS AND SLIT HIDES

Title (en)

METHOD OF POST-LIMING SKINS AND SLIT HIDES

Publication

EP 0306474 B1 19910417 (DE)

Application

EP 88890220 A 19880901

Priority

AT 221287 A 19870902

Abstract (en)

[origin: EP0306474A1] The process described is carried out with an aqueous alkaline liquor containing formanidine sulfinic acid (thiourea dioxide) in combination with calcium hydroxide and/or alkalis and, if necessary, swelling inhibitors.

IPC 1-7

C14C 1/06

IPC 8 full level

C14C 1/06 (2006.01)

CPC (source: EP)

C14C 1/06 (2013.01)

Designated contracting state (EPC)

DE ES FR IT

DOCDB simple family (publication)

EP 0306474 A1 19890308; EP 0306474 B1 19910417; AT 388387 B 19890612; AT A221287 A 19881115; AU 2266188 A 19890331; BR 8807184 A 19891017; DE 3862451 D1 19910523; DK 211089 A 19890501; DK 211089 D0 19890501; ES 2021885 B3 19911116; HU 203907 B 19911028; HU 885369 D0 19900228; HU T51339 A 19900428; WO 8901980 A1 19890309

DOCDB simple family (application)

EP 88890220 A 19880901; AT 221287 A 19870902; AT 8800069 W 19880901; AU 2266188 A 19880901; BR 8807184 A 19880901; DE 3862451 T 19880901; DK 211089 A 19890501; ES 88890220 T 19880901; HU 536988 A 19880901