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: 157 337 350 patent documents

This week's update (19/07/2024 12:00 CET):

219 431 new documents added

1 247 852 documents amended

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EP 0016234 B1 19830720 - METHOD FOR VISUALLY TESTING THE REPRODUCTION QUALITY OF PRINTED MATTER OBTAINED BY CATHODE RAY TUBE COMPOSITION

Title (en)

METHOD FOR VISUALLY TESTING THE REPRODUCTION QUALITY OF PRINTED MATTER OBTAINED BY CATHODE RAY TUBE COMPOSITION

Publication

EP 0016234 B1 19830720 (DE)

Application

EP 78101472 A 19781129

Priority

EP 78101472 A 19781129

Abstract (en)

[origin: EP0016234A1] 1. Method for visual inspection of the reproduction quality of printed matter produced by means of electron beam photo-composition, characterised in that negative, normal and positive elements are combined into symbols or words within an inspection area, in such manner that an unacceptable processing section is detectable immediately by the observer.

IPC 1-7

G03B 27/72

IPC 8 full level

G03C 5/02 (2006.01)

CPC (source: EP)

G03C 5/02 (2013.01)

Designated contracting state (EPC)

CH DE FR NL SE

DOCDB simple family (publication)

EP 0016234 A1 19801001; EP 0016234 B1 19830720; DE 2862298 D1 19830825

DOCDB simple family (application)

EP 78101472 A 19781129; DE 2862298 T 19781129