Patent · US Expired

Security with identifying marks printed in the substance of a paper layer

US4504357A · kind A · utility

68Cited by

3References

8Claims

0Family size

Assignee

GAO Gesellschaft für Automation und organisation mbH · DE

Inventors

Hans J. Holbein · Munich, DE
Paul Leiderer · Allensbach, DE
Walter Schneider · Thalwil, CH

Key dates

Filing date	Oct 26, 1983
Grant date	Mar 12, 1985
Priority date	—
Expiry date	Oct 26, 2003

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10S428/916
WIPO fieldOther consumer goods
WIPO sectorOther fields

Abstract

A security with a paper substrate which exhibits identifying marks in the form of color patterns. The color patterns are arranged in the substance of the paper substrate in such a manner that the normal structure of the fibres in the substance of the paper layer is not disturbed by the color patterns. In the manufacture of the security, the color pattern is sprayed on to the not yet completely finished non-woven fibre during the formation of the paper sheet, and is preferably sprayed on to a non-woven fibre which is then united to a second non-woven fibre.

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