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: 158 539 009 patent documents

This week's update (13/09/2024 12:00 CET):

155 661 new documents added

1 150 346 documents amended

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EP 0067984 B1 19850925 - METHOD OF ETCHING CHROMIUM, AND ETCHANT COMPOSITIONS FOR CARRYING IT OUT

Title (en)

METHOD OF ETCHING CHROMIUM, AND ETCHANT COMPOSITIONS FOR CARRYING IT OUT

Publication

EP 0067984 B1 19850925 (DE)

Application

EP 82104812 A 19820602

Priority

US 27672381 A 19810624

Abstract (en)

[origin: US4370197A] An aqueous acidic composition suitable for etching which contains an acid and a thiourea compound, and use thereof.

IPC 1-7

C23F 1/00; C09K 13/06

IPC 8 full level

C23F 1/26 (2006.01); H05K 3/06 (2006.01)

CPC (source: EP US)

C23F 1/26 (2013.01 - EP US)

Designated contracting state (EPC)

DE FR GB IT

DOCDB simple family (publication)

EP 0067984 A1 19821229; EP 0067984 B1 19850925; CA 1163540 A 19840313; DE 3266507 D1 19851031; JP S583984 A 19830110; JP S6059303 B2 19851224; US 4370197 A 19830125

DOCDB simple family (application)

EP 82104812 A 19820602; CA 399068 A 19820323; DE 3266507 T 19820602; JP 5394282 A 19820402; US 27672381 A 19810624