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: 157 117 910 patent documents

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

139 301 new documents added

1 340 825 documents amended

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EP 0756515 A4 19970319 -

Publication

EP 0756515 A4 19970319 (EN)

Application

EP 94916539 A 19940419

Priority

BR 9408572 A 19940419
US 9404257 W 19940419

IPC 1-7

B01F 1/00

IPC 8 full level

B01F 1/00 (2006.01); B02C 19/00 (2006.01); C22B 15/00 (2006.01); C22B 23/00 (2006.01)

Citation (search report)

[AD] US 3911076 A 19751007 - PROBERT THOMAS I, et al
[A] ROKUKAWA NAGANORI: "Extraction of nickel, cobalt and copper from ocean cobalt crust with ammoniacal alkaline solution", METALLURGICAL REVIEW OF MMIJ, vol. 9, no. 1, July 1992 (1992-07-01), TOKYO, JP, pages 64 - 74, XP000613777
See references of WO 9528223A1

Designated contracting state (EPC)

AT BE CH DE DK ES FR GB GR IE IT LI LU MC NL PT SE

DOCDB simple family (publication)

BR 9408572 A 19970826; EP 0756515 A1 19970205; EP 0756515 A4 19970319

DOCDB simple family (application)

BR 9408572 A 19940419; EP 94916539 A 19940419