Patent · US Expired

Photographic silver halide emulsion containing gelatine

US4990440A · kind A · utility

0Cited by

5References

4Claims

0Family size

Assignee

Agfa-Gevaert NV · BE

Inventors

Franz Moll · Leverkusen, DE
Bruno Mucke · Bensberg, DE
Walter Patzold · Leverkusen, DE
Klaus Wagner · Bensberg, DE

Key dates

Filing date	Aug 4, 1989
Grant date	Feb 5, 1991
Priority date	—
Expiry date	Aug 4, 2009

Classification

Technology area (CPC G)Physics
CPC primaryG03C2001/0471
WIPO fieldOptics
WIPO sectorInstruments

Abstract

The sensitivity/fog ratio can be improved by using photographic silver halide emulsions containing gelatine which has a cysteine content of less than 10 ppm and a gold number of .gtoreq.23 .mu.mol/g.

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