Patent · US Expired

Photographic silver halide emulsions

US5821044A · kind A · utility

3Cited by

4References

8Claims

0Family size

Assignee

Agfa-Gevaert NV · BE

Inventors

Peter Bergthaller · Bensberg, DE
Jorg Siegel · Leverkusen, DE
Hans-Ulrich Borst · Elsdorf, DE
Michael Missfeldt · Leichlingen, DE

Key dates

Filing date	Jul 17, 1997
Grant date	Oct 13, 1998
Priority date	—
Expiry date	Jul 17, 2017

Classification

Technology area (CPC G)Physics
CPC primaryG03C2001/094
WIPO fieldOptics
WIPO sectorInstruments

Abstract

A spectrally sensitised photographic silver halide emulsion which is super-sensitised with an aromatic complex having a central transition metal atom which is present in a valence state which is not the highest possible for the metal concerned and which complex contains at least one non-aromatic complex ligand, is distinguished by increased sensitivity.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.