Patent · US Expired

Process for the preparation of photographic materials

US4490461A · kind A · utility

17Cited by

5References

14Claims

0Family size

Assignee

Ciba-Geigy · US

Inventors

Terence C. Webb · Witham, GB
Peter A. Lovell · Appleton, GB
Samuel B. Kingston · Stuttgart, DE

Key dates

Filing date	Jul 11, 1983
Grant date	Dec 25, 1984
Priority date	—
Expiry date	Jul 11, 2003

Classification

Technology area (CPC G)Physics
CPC primaryG03C7/3882
WIPO fieldOptics
WIPO sectorInstruments

Abstract

Process for the preparation of a photographic material comprising in at least one layer photographic useful compounds, e.g. color couplers or developers, which are occluded into solid polymer particles of 0.1 to 0.5 .mu.m in size.

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