Patent · US Expired

Process for concentrating yellow silver sols

US4429038A · kind A · utility

3Cited by

5References

4Claims

0Family size

Assignee

Agfa-Gevaert NV · BE

Inventors

Franz Moll · Leverkusen, DE
Ingeborg Holl · Leverkusen, DE

Key dates

Filing date	Jul 26, 1982
Grant date	Jan 31, 1984
Priority date	—
Expiry date	Jul 26, 2002

Classification

Technology area (CPC G)Physics
CPC primaryG03C1/8255
WIPO fieldOptics
WIPO sectorInstruments

Abstract

A yellow silver sol containing a binder is concentrated by flocculation in the presence of a calcium-free gelatin, a water-soluble chloride being added to the flocculation and/or after the redispersion.

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