Patent · US Expired

Recording material containing a layer of polymer particles and a superimposed metallic layer

US4954422A · kind A · utility

3Cited by

2References

3Claims

0Family size

Assignee

BASF SE

Inventors

Josef Lamprecht · Ludwigshafen, DE
Gregor Ley · Wattenheim, DE
Arend Werner · Ludwigshafen, DE
Helmut Barzynski · Bad Dürkheim, DE

Key dates

Filing date	Jan 13, 1989
Grant date	Sep 4, 1990
Priority date	—
Expiry date	Jan 13, 2009

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T428/24388
WIPO fieldAudio-visual technology
WIPO sectorElectrical engineering

Abstract

A photosensitive recording material for recording information by means of a local change in the optical properties of a recording layer under the action of light having a high energy density, and a process for its preparation.

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