Patent · US Expired

Light-sensitive material having developers embedded therein

US3951664A · kind A · utility

1Cited by

6References

7Claims

0Family size

Assignee

AGFA-Gervaert AG · DE

Inventors

Anita von Konig · Krefeld, DE
Helmut Kampfer · Idar-Oberstein, DE
Ernst Roos
Kurt Ley

Key dates

Filing date	Jun 24, 1974
Grant date	Apr 20, 1976
Priority date	—
Expiry date	Jun 24, 1994

Classification

Technology area (CPC G)Physics
CPC primaryG03C1/49827
WIPO fieldOptics
WIPO sectorInstruments

Abstract

A photographic material having a light-sensitive silver salt emulsion layer which layer contains a silver salt developer of the chroman series having the formula defined below.

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