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

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147 225 new documents added

921 612 documents amended

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EP 0073636 B2 19920909 - PHOTOGRAPHIC ELEMENTS CONTAINING BALLASTED COUPLERS

Title (en)

PHOTOGRAPHIC ELEMENTS CONTAINING BALLASTED COUPLERS

Publication

EP 0073636 B2 19920909 (EN)

Application

EP 82304461 A 19820824

Priority

US 29608681 A 19810825

Abstract (en)

[origin: EP0073636A1] A photographic element comprising a support, a photographic silver halide emulsion and a nondiffusible photographic coupler, characterized in that said coupler contains attached to a position other than the coupling position a ballast terminated with a hydroxyphenylsulfonyl group of a hydroxyphenylsulfinyl group.

IPC 1-7

G03C 7/32; G03C 7/34; G03C 7/26; G03C 7/00; C07C 317/22; C07C 315/04

IPC 8 full level

C09B 55/00 (2006.01); G03C 1/06 (2006.01); G03C 7/32 (2006.01)

CPC (source: EP)

G03C 7/3212 (2013.01)

Designated contracting state (EPC)

CH DE FR GB LI

DOCDB simple family (publication)

EP 0073636 A1 19830309; EP 0073636 B1 19870318; EP 0073636 B2 19920909; DE 3275761 D1 19870423; JP H0551889 B2 19930803; JP S5842045 A 19830311

DOCDB simple family (application)

EP 82304461 A 19820824; DE 3275761 T 19820824; JP 14752182 A 19820825