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: 157 484 516 patent documents

This week's update (26/07/2024 12:00 CET):

147 225 new documents added

921 612 documents amended

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EP 0012855 B1 19830202 - OVERCOATED PHOTOTHERMOGRAPHIC ELEMENT HAVING A DYE-PRECURSOR RETAINING LAYER

Title (en)

OVERCOATED PHOTOTHERMOGRAPHIC ELEMENT HAVING A DYE-PRECURSOR RETAINING LAYER

Publication

EP 0012855 B1 19830202 (EN)

Application

EP 79104668 A 19791123

Priority

US 97130078 A 19781220

Abstract (en)

[origin: EP0012855A1] An imaging element which relies upon an aromatic dialdehyde to produce a dye provides improved maximum neutral densities when certain polymers are superimposed over the element. Such polymers seal the element to reduce loss of the dialdehyde during development.

IPC 1-7

G03C 1/72; G03C 1/76

IPC 8 full level

G03C 1/73 (2006.01); G03C 1/67 (2006.01); G03C 1/76 (2006.01)

CPC (source: EP)

G03C 1/67 (2013.01); G03C 1/7614 (2013.01)

Citation (examination)

EP 0003263 A1 19790808 - EASTMAN KODAK CO [US]

Designated contracting state (EPC)

BE DE FR GB

DOCDB simple family (publication)

EP 0012855 A1 19800709; EP 0012855 B1 19830202; CA 1144412 A 19830412; DE 2964678 D1 19830310; JP S5588046 A 19800703

DOCDB simple family (application)

EP 79104668 A 19791123; CA 323824 A 19790320; DE 2964678 T 19791123; JP 16496179 A 19791220