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: 159 515 718 patent documents

This week's update (01/11/2024 12:00 CET):

154 531 new documents added

1 078 520 documents amended

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EP 0023670 B1 19820602 - PHOTOGRAPHIC EMULSION, PRODUCTION PROCESS AND PHOTOGRAPHIC MATERIALS

Title (en)

PHOTOGRAPHIC EMULSION, PRODUCTION PROCESS AND PHOTOGRAPHIC MATERIALS

Publication

EP 0023670 B1 19820602 (DE)

Application

EP 80104328 A 19800723

Priority

DE 2931690 A 19790804

Abstract (en)

[origin: US4314024A] Photographic silver halide emulsions are stabilized by aminocarboxylic acids.

IPC 1-7

G03C 1/34

IPC 8 full level

G03C 1/34 (2006.01)

CPC (source: EP US)

G03C 1/346 (2013.01 - EP US)

Designated contracting state (EPC)

BE DE FR GB

DOCDB simple family (publication)

EP 0023670 A1 19810211; EP 0023670 B1 19820602; DE 2931690 A1 19810219; DE 3060503 D1 19820722; JP S5629228 A 19810324; US 4314024 A 19820202

DOCDB simple family (application)

EP 80104328 A 19800723; DE 2931690 A 19790804; DE 3060503 T 19800723; JP 10584780 A 19800802; US 17370980 A 19800730