Patent · US Expired

Reading out information stored in thin polymer layers

US5049462A · kind A · utility

21Cited by

2References

12Claims

0Family size

Assignee

BASF SE

Inventors

Dirk Funhoff · Heidelberg, DE
Harald Fuchs · Eisenberg (Pfalz), DE
Ulrike Licht · Mannheim, DE
Wolfgang Schrepp · Heidelberg, DE
Werner Hickel · Ludwigshafen, DE
Wolfgang Knoll · Mainz, DE
Gerhard Wegner · Mainz, DE
Gisela Duda · Dietzenbach, DE

Key dates

Filing date	Feb 20, 1990
Grant date	Sep 17, 1991
Priority date	—
Expiry date	Feb 20, 2010

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T428/31504
WIPO fieldAudio-visual technology
WIPO sectorElectrical engineering

Abstract

Information stored in a thin polymer layer is read out in a process wherein information introduced into a thin polymer layer on a metallic or semiconductor layer by electromagnetic or particle rays which produce a permanent change in the properties of the polymer layer in the irradiated areas is read out using surface plasmons.

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