Patent · US Expired

Class of yellow dyes for use in photographic materials

US5691126A · kind A · utility

0Cited by

6References

5Claims

0Family size

Assignee

Agfa-Gevaert NV · BE

Inventors

Eric Kiekens · Zele, BE
Antonius Van Gils · Meer, BE
Roland Claes · Dendermonde, BE

Key dates

Filing date	Aug 29, 1996
Grant date	Nov 25, 1997
Priority date	—
Expiry date	Aug 29, 2016

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC09B23/0091
WIPO fieldBasic materials chemistry
WIPO sectorChemistry

Abstract

A new class of dyes useful in photographic materials as antihalation dyes, filter dyes or acutance dyes is disclosed. The dyes absorb in the spectral region 450-500 nm and are especially useful in photographic materials designed for recording by means of an Ar ion laser.

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