Patent · US Expired

Development of photographic silver halide elements

US4013471A · kind A · utility

8Cited by

2References

22Claims

0Family size

Assignee

Agfa-Gevaert NV · BE

Inventors

Robert J. Pollet · Vremde, BE
Camille Angelina Vandeputte · Mortsel, BE
Francis J. Sels · Kontich, BE
Gerard Laurens Vanreusel · Hove, BE
Jozef Frans Willems · Wilrijk, BE
George F. Van Veelen · Mortsel, BE

Key dates

Filing date	Nov 20, 1973
Grant date	Mar 22, 1977
Priority date	—
Expiry date	Nov 20, 1993

Classification

Technology area (CPC G)Physics
CPC primaryG03C1/043
WIPO fieldOptics
WIPO sectorInstruments

Abstract

Polyoxyethylene compounds carrying thioether groups as substituents on the linear chain are described for accelerating or activating development of exposed silver halide elements.

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